소셜 상황 인지를 통한 추천 시스템: MyMovieHistory 사례 연구

이용승,정재은,Lee, Yong-Seung,Jung, Jason J. 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.7

소셜네트워크서비스(SNS)는 사용자들이 자신들의 정보를 가족, 친구, 그리고 소속단체원들과 공유하는 것을 가능케 해 준다. SNS 상의 정보의 양은 기하급수적으로 증가하고 있는 추세다. 특히 페이스북은 연예오락(영화, 음악, TV쇼 등)과 관련된 흥미로운 기능을 채택해 오고 있다. 그러나 페이스북은 사용자들에게 관심 아이템을 추천할 때 필요한 사용자들의 시간, 장소, 소셜 상황 등 상황적 정보는 고려하지 않고 있다. 따라서 이 논문에서 사용자들이 언제, 어디서, 누구와 영화를 보는지 등에 대한 다양한 상황적 정보의 통합에 기반을 둔 영화 추천 접근법을 제안 하고자 한다. 또한 두 명이 함께 영화를 관람하러 갔을 때 동시에 만족할만한 영화 추천 방법을 제안한다. 실험을 위해 사용자들의 영화관람 내용을 기록하고 이에 기반을 두어 적절한 추천 영화를 소개해 줄 수 있는 'MyMovieHistory'라는 페이스북 응용프로그램을 개발하였다. Social networking services (in short, SNS) allow users to share their own data with family, friends, and communities. Since there are many kinds of information that has been uploaded and shared through the SNS, the amount of information on the SNS keeps increasing exponentially. Particularly, Facebook has adopted some interesting features related to entertainment (e.g., movie, music and TV show). However, they do not consider contextual information of users for recommendation (e.g., time, location, and social contexts). Therefore, in this paper, we propose a novel approach for movie recommendation based on the integration of a variety contextual information (i.e., when the users watched the movies, where the users watched the movies, and who watched the movie with them). Thus, we developed a Facebook application (called MyMovieHistory) for recording the movie history of users and recommending relevant movies.

측두하악장애 환자에서 저작 효율 및 구강건강관련 삶의 질 평가

이용승,변영섭,최종훈,안형준,Lee, Yong-Seung,Byun, Young-Sub,Choi, Jong-Hoon,Ahn, Hyung-Joon 대한안면통증구강내과학회 2010 Journal of Oral Medicine and Pain Vol.35 No.2

In this study, the objective masticatory efficiency of two groups of temporomandibular disorder patients, pain and sound groups, was compared with that in a normal group using the MAI (mixing ability Index). The subjective chewing ability was evaluated using questionnaires, such as the Food Intake Ability Index (FIA) and Visual Analogue Scale (VAS). The Oral Health Impact Profile (OHIP)-49K of the patients was also examined to measure the oral health-related quality of life. The results were as follows: 1. The MAI, FIA and VAS in the pain group were significantly lower than in the normal and sound groups. This shows that the chewing efficiency of the pain group was lower than the normal and sound groups (P<0.05). However, there was no significant difference between the sound and normal groups. 2. The OHIP-49K for the oral health-related quality of life showed a significant increase in both the pain and sound groups compared with normal group. This means that the oral health-related quality of life was lower in both the pain and sound groups. 3. There was a correlation between the MAI, FIA and VAS (P<0.01) in all subjects (71 persons). The OHIP-49K was associated with the FIA and VAS. 4. There was a correlation between the FIA and VAS (P<0.05) in the sound group but no correlation in the other groups. 5. There was a correlation between the FIA and VAS in all groups. 6. The VAS was increased significantly in the pain group according to the level of pain reduction after treatment (P<0.05). However, there was no significant increase in the MAI, even though there was an improvement in masticatory efficiency. In addition, there was no difference in the FIA and OHIP-49K according to the level of pain reduction after treatment. In this study, it is believed that pain is a main factor decreasing the masticatory efficiency in patients with temporomandibular disorders. Moreover, TMJ sounds decrease the quality of life but do not decrease the masticatory efficiency. Therefore, it is important to control the pain in order to improve the masticatory efficiency in temporomandibular disorder patients. Moreover, managing both pain and sound can improve the quality of life.

중장기 재생에너지 잉여전력 전망 방법론 개발

이용승(Lee, Yong-Seung),정솔영(Jung, Sol-Young),이재걸(Lee, Jae-Gul),이종민(Lee, Jong-Min) 대한전기학회 2023 전기의 세계 Vol.72 No.8

한국전력공사 전력연구원(이하 전력연구원)에서는 향후 재생에너지의 비중이 증가하고 전력망의 유연성이 부족한 경우 발생할 수 있는 재생에너지 잉여전력의 발생량을 정량적으로 전망할 수 있는 방법론과 분석 모델을 개발하였다. 이 방법론은 시간대 및 계절별 전력수요 및 재생에너지 발전량의 변화를 모두 고려한 잉여전력의 발생량을 분석할 수 있으며 잉여전력의 발생 패턴까지도 분석이 가능한 방법이다. 시간대 및 계절적인 잉여전력 발생 특성은 중장기 최적 Energy Storage Mix(P2X 포함) 구성 연구를 포함하여 재생에너지 잉여전력 활용을 위한 다양한 연구에 의미 있는 정보가 될 수 있다. A new methodology and analysis model have been developed to predict how much surplus renewable energy will occur in what pattern in the future. This methodology can analyze the amount of surplus renewable energy generation considering both daily and seasonal power demand and the amount of renewable energy generation as well as its generation pattern. It was found that 303 TWh of surplus power can be generated in 2050, due to relatively high proportion of solar power generation facilities at 85% in Korea’s carbon-neutral scenario. So, the trend of generation of surplus power varies depending on the change in the amount of solar power generation. From the perspective of planning a renewable energyoriented electrical grid, it is important to ratianally predict the amount of surplus power generated in the mid- to long-term and establish technical alternatives to minimize surplus power. In particular, for mid- to long-term energy storage and power conversion(P2X) technologies that need to consider seasonal characteristics, the results derived from this study are expected to be very important information.

마이크로그리드 통합 운영을 위한 EPMI 시스템 기반의 전력거래

이용승(Yong-Seung Lee),김욱원(Wook-Won Kim),이재영(Jae-Young Lee),이학주(Hak-Ju Lee) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.7

현가계 모델을 고려한 실시간 전차량 동역학 모델링 및 검증

이용승(Yongseung Lee),이창배(Changbae Lee),이재훈(Jaehoon Lee),국형석(Hyung-Seok Kook),허승진(Seung-Jin Hoe) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

특집2 : 결혼이주민들의 생활세계 ; 이주민 정치참여 영향요인에 대한 탐색적 연구: 대구,경북지역 결혼이주여성을 중심으로

이용승 ( Yong Seung Lee ),이용재 ( Yong Jea Lee ) 한국민족연구원 2013 민족연구 Vol.0 No.53

According to the increase of migrants in Korea, the social and political participation of migrants becomes a very important issue. However participation and political representation of migrants in Korea is structurally restricted. This study analyzes the current situation of political participation of marriage migrants in Korea. Data were collected by questionnaire for marriage migrants living in Daegu and Kyeoung-buk province. Income, age, scholarship. efficacy, opinion for participation, and level of language is a key factor of analysis. Political participation is divided into the general participation to political activities and the participation in elections. Independent factors are classified into the socio-economic, psychological, and relational resources. The thesis finds that factors affecting the participation of electorates which previous researches pointed out influence participation of migrants. Opinion for participation, efficacy, level of Korean language skills, participation In migrants communities, acquisition of nationality have positive influence to political participation. Income, social support, scholarship, occupation, etc. have a low or negative relation to political participation. The study reaches to the conclusion suggesting that the support for Korean language education, activation of migrant communities, and easing of acquisition of nationality

결혼이주여성의 문화적응

이용승(Lee Yong Seung),이용재(Lee Young Jea) 대구가톨릭대학교 다문화연구소 2013 다문화와 인간 Vol.1 No.2

The aim of this thes is isanalyzing the encounters of cultures in the context of Korea. The Focus of analysis is comparison of Filipinos and Vietnamese who has marred Koreans. Sequence of the paper as follow: Methodology, Concept and Theory, Descriptive analysis, Cross analysis, and Conclusion. By mean of 510 respondents, while Vietnamese marriage migrants prefer the assimilation strategy, marriage migrants of Philippines prefer segregation strategy which is characterized by high maintenance and low accommodation. However, cross analysis shows a different result. Vietnamesea ppear to be distributed to the upper part, because ‘attitude to the accommodation to the Korean culture’ of them is very high. They have the ambivalent tendencies of ‘assimilation’ and ‘integration.’ Meanwhile, ‘marginalization’ and‘separation’ are very rare. ‘Integration’ strategy which is both high in ‘accommodation to mainstream,’ and ‘maintenance of homeland culture’ is the Filipino’s acculturation strategy. However, ‘marginalization’ and ‘separation’ are higher than Vietnamese marriage migrant women. There are differences in acculturation strategies according to nationality or cultures, though they are all defined by ‘marriage migrants.’ The policy of immigrants in Korea must be adjusted by reflection of this reality. For the purpose of desirable integration, Korea has to consider the desires of immigrants and should seek coexistence of the Korean culture and inherent cultures of immigrants.

특집 : 현대의 민족문제와 다문화주의 ; 호주 : 호주 다문화주의의 역진(逆進)

이용승 ( Yong Seung Lee ) 한국민족연구원 2007 민족연구 Vol.0 No.30

다문화 사회의 문제와 대응논리 한국 다문화주의의 담론지형에 관한 소고

이용승 ( Yong Seung Lee ) 대구가톨릭대학교 인문과학연구소 2011 인문과학연구 Vol.0 No.16

The aim of this thesis is reconsidering Korean multiculturalism. To analyse the discourse of Korean multiculturalism, the paper reviews the related researches and governmental policies. The article classifies the studies of academia in several categories; research on theoretical system of multiculturalism, political principle in multicultural era, justification of multiculturalism, universal principles and multiculturalism. What will follow is reviews on governmental multicultural policies. Law and institution, studies which was ordered by government will be examined in this part. Through this analysis, the paper concludes that Korean multiculturalism is in a state of lack of theoretical, philosophical debate. Furthermore, Korean multiculturalism is more or less far from the aim of multiculturalism. In conclusion, the article recommends some ideas to remedy the problems of Korean multiculturalism.

국제 이주의 동기에 관한 연구

이용승(Lee, Yongseung) 전남대학교 글로벌디아스포라연구소 2014 디아스포라 연구 Vol.8 No.1

이 글은 필리핀 결혼이주여성이 한국으로 이주하는 동기와 배경을 탐색하는 데 목적이 있다. 이를 위해 이주해 왔거나 이주할 예정인 필리핀 여성 9명을, 한국과 필리핀에서 각각 인터뷰하여 그들의 이야기(narratives)를 분석하는 질적 연구를 수행하였다. 인간이 이주하는 이유는 몇 가지 범주로 유형화하기 어려울 정도로 다양하다. 이주를 하는 사람만큼 다양한 이주 동기와 배경이 있을 것이다. 개별 이주민의 이야기에 주목하고 있는 이 논문은 사례 분석을 통해 이주민들이 이주를 선택하는 이유가 상당히 중첩적이라는 사실을 재삼 확인할 수 있었다. 사례들은 가족부양과 취업 기회 확대, 더 나은 삶에 대한 욕망과 만족추구, 사회적 네트워크 등이 이주를 선택하는 데 중층적 동기로 작용하고 있음을 보여준다. 이주 동기에 대한 분석은 다양한 요인들에 대한 총체적 관점을 요구한다. 총체적 관점은 기존의 양적 연구와 함께 질적 연구를 분석 자료로 활용함으로써 도달할 수 있다. 이 연구가 채택하고 있는 질적 연구 방법으로서 전기적 접근은 점차 ‘이주의 시대’에 편입되어 가고 있는 한국의 현실을 총체적으로 조망하는 데 기여할 수 있을 것이다. This article analyses the motives and backgrounds of international migration toward Korea. For this, the paper conducted qualitative study which was constituted nine peoples who are going to come, or came to Korea. The causes of human migration have immense reasons. Through depth-interview, this paper found that the motives of international migration were overlapped each other. The analysis of motives of migration needs the holistic perspective, which can be arrived by mixed approach of quantitative and qualitative. This treatise pays attention to narratives of individual migrants for qualitative study. Biographical approach that this article draw on, will contribute the holistic understanding of Korean reality which gradually enters to ‘the age of migration.’