효율적인 국도 ITS 통신선로 구축방안 연구

전병국,이현욱,남희,이종철,문학룡,류승기 한국ITS학회 2009 한국ITS학회 학술대회 Vol.2009 No.10

탈(脫) 소비에트 과정에서 진행된 러시아 복지정책의 정향성 분석

전병국 한국슬라브․유라시아학회 2019 슬라브학보 Vol.34 No.3

The welfare policy, one of the strongest props for the Soviet socialistic system, was regarded to be inefficient and non-market during the post-Soviet process. The Russian government restructured the welfare policy based on the welfare system, which fit the trend of the time and emphasized this change was unavoidable. If during the post-Soviet process the Russian government had wanted to claim their welfare policy was proper, its welfare policy should have put top priority on social integration rather than economic efficiency. This study starts with this question. For this study, the Russian welfare policy was analyzed using Titmuss’ Social Welfare Model Theory. On the surface, the welfare policy during the post-Soviet process contained a lot of characteristics, which might be considered as an institutional model. However, a close investigation of its execution reveals that the welfare policy was founded on a strong residual model. This finding demonstrates the welfare policy of those days was the model with considerable differences between visible aspects and invisible aspects. The important thing is the visible aspects. The strong residual model-based policy welfare displays that the Russian government’s attitude towards national welfare at that time came from economic efficiency rather than social integration. This seems to be distant from the concept of the conventional welfare policy that is based on a minimum respect for human beings. Currently, the Russian government is aiming to be the global center. In the welfare policy area, the future orientation of the Russian government must be the same as welfare states’. In terms of the welfare policy, welfare states are being oriented towards an institutional model-based achievement model. In addition, assistance should be provided to establish proper relations between the weak and the strong, between the non-mainstream and the mainstream and between the disabled and the non-disabled, perceived by the people. The government’ role is big in this domain as well. 탈 소비에트 과정에서, 소비에트 사회주의 체제의 가장 든든한 버팀목 중 하나였던 복지정책은 비(非)효율적이며, 비(非)시장적이란 평가를 받았다. 러시아정부는 시대에 맞는 복지제도를 기반으로 하는 복지정책의 재구조화를 진행하였고, 이러한 변화는 불가피했음을 역설하였다. 만일 러시아정부가 탈 소비에트 과정에서 올바른 복지정책을 시행했었다고 주장하고 싶다면, 최소한 경제효율성 보다 사회통합이 우선시되는 복지정책이어야 했다. 이 질문에서 본 연구는 출발한다. 연구 진행을 위해서 티트무스의 사회복지모형론을 이용해 러시아 복지정책을 분석 하였다. 탈 소비에트 과정에서 진행된 복지정책은 표면적인 측면에서는 제도모형으로 여겨질 수 있는 여러 특징들을 가지고 있었다. 그러나 실행적 측면을 면밀히 살펴보면 강한 잔여모형을 기반으로 한 복지정책이었음이 들어난다. 이러한 결과는 당시 진행된 복지정책이 보이는 측면과 숨겨진 측면이 상당히 다른 유형의 모델이었음을 알 수 있다. 중요한 것은 숨겨진 측면이다. 강한 잔여모형을 기반으로 했음은 당시 러시아정부의 국민복지에 태도가 사회통합 보다는 경제적 효율성에 기인했음을 들어낸다. 올바른 복지정책의 개념, 인간에 대한 최소한의 존중을 기반으로 한 전통적 복지정책 개념과는 거리가 있어 보인다. 러시아정부는 현재 세계 중심 국가를 목표로 하고 있다. 러시아정부의 향후 목표는 복지정책 영역에서 당연히 복지국가와 동일한 방향이어야 한다. 복지국가들은 복지정책 영역에서 제도모형을 기본으로 한 성취모형으로 넘어가고 있다. 이와 더불어 국민들 사이에 존재하고 있는 약자와 강자, 비주류와 주류, 장애인과 비장애인 간의 올바른 관계성이 설정되고, 확립되도록 도와야 한다. 이 영역에서도 정부의 역할은 크다고 할 수 있겠다.

Synthesis of polyimide and electromagnetic wave shield film manufacture from polyimide which adds the PEDOT

전병국,이준영,한지은,이경섭 한국고분자학회 2007 한국고분자학회 학술대회 연구논문 초록집 Vol.2007 No.10

A study on thermal conductivity and mechanical properties of polymer / graphite composites

전병국,이횡래,하성민,유영재,원종찬,이성구 한국고분자학회 2012 한국고분자학회 학술대회 연구논문 초록집 Vol.2012 No.4

러시아 문화정책을 통해 살펴보는 러시아 정체성 : 러시아연방 영화진흥법 및 러시아 영화의 해를 중심으로

전병국 건국대학교 GLOCAL(글로컬)캠퍼스 스토리앤이미지텔링연구소 2023 스토리&이미지텔링 Vol.26 No.-

본 연구는 탈 소비에트 이후 러시아 정부가 어떠한 문화정책을 시행했으며, 시행한 문화정책의 본질이 무엇이었을까 라는 질문에서 출발했다. 그리고 이러한 질문은 러시아 문화정책을 통해서 러시아 정부가 추구하고 있는 민족정체성의 본질과 민족정책 방향성을 예측해 보고자 하는 데 목적이 있었다. 본 연구에서는 러시아의 문화정책 흐름을 시기별로 분류하고, 러시아연방 『영화진흥법』 및 『러시아 영화의 해』 프로그램을 살펴봄으로써 러시아 문화정책의 법률적 사항과 프로그램의 정책 실행과정을 분석해 보고자 했다. 또한, 국가 러시아가 지닌 문화와 민족정체성에 대한 시야를 확인해 보고, 러시아가 추구하는 문화국가로의 향방(向方)까지도 살펴 보고자 했다 This study started with the question of what kind of cultural policy the Russian government implemented after the post-Soviet era and what was the essence of the cultural policy implemented. And these questions are aimed at grasping the nature of the national identity pursued by the Russian government by examining Russian cultural policy and predicting the direction of the Russian government's national policy in the future. In this study, we tried to identify the legal matters of Russian cultural policy and the policy implementation of the program by classifying and analyzing the flow of Russian cultural policy by period and closely examining the Russian Federal Film Promotion Act and the Russian Film Year program. Furthermore, this study sought to examine the identity and direction of the Russian government's cultural policy in a rapidly changing modern society, confirming the view of the country's cultural and national identity, and even predict the direction of Russia to a cultural state it wants to move forward.

이중편파 레이더의 강우관측 능력 평가

전병국,이충기,김양수 한국방재학회 2012 한국방재학회논문집 Vol.12 No.2

The information of areal rainfall distribution is very important for the flood forecasting, flood management, and dam operation,etc. In analyzing of spatial distribution of rainfall, the rain radar is superior to the point rain gauge network and has been used for flood managements in many countries. In Korea the rain radar is used for rainfall estimation and recently 'Ministry of Land, Transportation and Maritime Affairs' is operating the first dual polarization rain radar at Mt. Bisl, Daegu. In this study the applicable feasibility of dual polarization rain radar to flood forecasting was reviewed through evaluation of rainfall measurement capability,comparing to the conventional single polarization radar, for major heavy rain events occurred within Nakdong river basin in 2011. As a results the mean observational error, comparing to the surface rain gauge as ground truth, by dual polarization radar was decreased about 13% from the one of single polarization radar. From the study the feasibility of radar rainfall to improving flood forecasting accuracy was revealed. 홍수예보, 댐 운영 등 홍수관리를 위해서는 강우의 공간분포 파악이 중요하다. 강우레이더는 점 우량계 관측망보다 강우의 공간적 분포를 파악하는데 효과적이어서 많은 나라에서 홍수관리에 활용중이다. 우리나라도 레이더를 이용하여 강우량을 추정하고있으며, 최근에는 국토해양부에서 우리나라 최초로 대구 비슬산에 이중편파 강우레이더를 설치하여 현재 운영 중에 있다. 본고에서는 2011년 낙동강 유역의 주요 호우를 대상으로 이중편파레이더의 강우관측 능력을 기존의 단일편파 레이더와 비교평가 하고 홍수예보에의 적용성을 검토하였다. 그 결과 지상우량계를 기준으로 이중편파 강우레이더의 관측오차가 기존의 단일편파 보다 약 13%정도 감소되는 것으로 나타나 홍수예보 정확도 제고에 기여할 수 있음을 확인하였다.

사용자 리뷰 마이닝을 결합한 협업 필터링 시스템: 스마트폰 앱 추천에의 응용

전병국,안현철 한국지능정보시스템학회 2015 지능정보연구 Vol.21 No.2

Collaborative filtering(CF) algorithm has been popularly used for recommender systems in both academic and practical applications. A general CF system compares users based on how similar they are, and creates recommendation results with the items favored by other people with similar tastes. Thus, it is very important for CF to measure the similarities between users because the recommendation quality depends on it. In most cases, users' explicit numeric ratings of items(i.e. quantitative information) have only been used to calculate the similarities between users in CF. However, several studies indicated that qualitative information such as user's reviews on the items may contribute to measure these similarities more accurately. Considering that a lot of people are likely to share their honest opinion on the items they purchased recently due to the advent of the Web 2.0, user's reviews can be regarded as the informative source for identifying user's preference with accuracy. Under this background, this study proposes a new hybrid recommender system that combines with users' review mining. Our proposed system is based on conventional memory-based CF, but it is designed to use both user's numeric ratings and his/her text reviews on the items when calculating similarities between users. In specific, our system creates not only user-item rating matrix, but also user-item review term matrix. Then, it calculates rating similarity and review similarity from each matrix, and calculates the final user-to-user similarity based on these two similarities(i.e. rating and review similarities). As the methods for calculating review similarity between users, we proposed two alternatives - one is to use the frequency of the commonly used terms, and the other one is to use the sum of the importance weights of the commonly used terms in users' review. In the case of the importance weights of terms, we proposed the use of average TF-IDF(Term Frequency - Inverse Document Frequency) weights. To validate the applicability of the proposed system, we applied it to the implementation of a recommender system for smartphone applications (hereafter, app). At present, over a million apps are offered in each app stores operated by Google and Apple. Due to this information overload, users have difficulty in selecting proper apps that they really want. Furthermore, app store operators like Google and Apple have cumulated huge amount of users' reviews on apps until now. Thus, we chose smartphone app stores as the application domain of our system. In order to collect the experimental data set, we built and operated a Web-based data collection system for about two weeks. As a result, we could obtain 1,246 valid responses(ratings and reviews) from 78 users. The experimental system was implemented using Microsoft Visual Basic for Applications(VBA) and SAS Text Miner. And, to avoid distortion due to human intervention, we did not adopt any refining works by human during the user's review mining process. To examine the effectiveness of the proposed system, we compared its performance to the performance of conventional CF system. The performances of recommender systems were evaluated by using average MAE(mean absolute error). The experimental results showed that our proposed system(MAE = 0.7867 ~ 0.7881) slightly outperformed a conventional CF system(MAE = 0.7939). Also, they showed that the calculation of review similarity between users based on the TF-IDF weights(MAE = 0.7867) leaded to better recommendation accuracy than the calculation based on the frequency of the commonly used terms in reviews(MAE = 0.7881). The results from paired samples t-test presented that our proposed system with review similarity calculation using the frequency of the commonly used terms outperformed conventional CF system with 10% statistical significance level. Our study sheds a light on the application of users' review information for facilitating electronic commerce by recommen... 협업 필터링은 학계나 산업계에서 우수한 성능으로 인해 많이 사용되는 추천기법이지만, 정량적 정보인 사용자들의 평가점수에만 국한하여 추천결과를 생성하므로 간혹 정확도가 떨어지는 문제가 발생한다. 이에 새로운 정보를 추가로 고려하여, 협업 필터링의 성능을 개선하려는 연구들이 지금까지 다양하게 시도되어 왔다. 본 연구는 최근 Web 2.0 시대의 도래로 인해 사용자들이 구입한 상품에 대한 솔직한 의견을 인터넷 상에 자유롭게 표현한다는 점에 착안하여, 사용자가 직접 작성한 리뷰를 참고하여 협업 필터링의 성능을 개선하는 새로운 추천 알고리즘을 제안하고, 이를 스마트폰 앱 추천 시스템에 적용하였다. 정성 정보인 사용자 리뷰를 정량화하기 위해 본 연구에서는 텍스트 마이닝을 활용하였다. 구체적으로 본 연구의 추천시스템은 사용자간 유사도를 산출할 때, 사용자 리뷰의 유사도를 추가로 반영하여 보다 정밀하게 사용자간 유사도를 산출할 수 있도록 하였다. 이 때, 사용자 리뷰의 유사도를 산출하는 접근법으로 중복 사용된 색인어의 빈도로 산출하는 방안과 TF-IDF(Term Frequency - Inverse Document Frequency) 가중치 합으로 산출하는 2가지 방안을 제시한 뒤 그 성능을 비교해 보았다. 실험결과, 제안 알고리즘을 통한 추천, 즉 사용자 리뷰의 유사도를 추가로 반영하는 알고리즘이 평점만을 고려하는 전통적인 협업 필터링과 비교해 더 우수한 예측정확도를 나타냄을 확인할 수 있었다. 아울러, 중복 사용 단어의 TF-IDF 가중치의 합을 고려했을 때, 단순히 중

이동 에이전트와 SNMP 에이전트와의 대화를 통한 통신망 관리 구현

전병국,Jeon, Byung-Kook 한국과학기술정보연구원 과학기술정보센터 2001 Journal of Information Science Theory and Practice Vol.32 No.1

As todays's networks are typically heterogeneous and very often comprised of multi-platform, multi-vendor network components, mobile agents have been proposed as a solution to the problem of the management of increasingly heterogeneous networks. Mobile agents are no longer statically resident on managed devices for network management: in contrast, they are migratory, replaceable at any time as necessary, and may be equipped with mini expert systems which can diagnose and fix networks' faults on behalf of the manager. Therefore, in this paper, the MIB browsing facilities for network management using the JAMAS and mobile agents are implemented. That is, the network manager accesses the MIB information through mobile agents with which communicate the SNMP agent of each of managed devices. The implementation performance is also evaluated.

Investigation of two-phase natural circulation with the SMART-ITL facility for an integral type reactor

전병국,윤은구,배황,양진화,류성욱,방윤곤,이성재,박현식 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.3

A two-phase natural circulation test using SMART integral test loop (SMARTeITL) was conducted toexplore thermo-hydraulic phenomena of two-phase natural circulation in the SMART reactor. Specifically,the test examined the natural circulation in the primary loop under a stepwise coolant inventoryloss while keeping the core power constant at 5% of the scaled full power. Based on the test results, threeflow regimes were observed: single-phase natural circulation (SPNC), two-phase natural circulation(TPNC), and boilerecondenser natural circulation (BCNC). The flow rate remained steady in the SPNC,slightly increased in the TPNC, and dropped abruptly and maintained in the BCNC. Using a natural circulationflow map, the natural circulation characteristic in the SMARTeITL was compared with those inpressurized water reactor simulators. In the SMARTeITL, a BCNC regime appeared instead of siphoncondensation and reflux condensation regimes because of the use of once-through steam generators. © 2021 Korean Nuclear Society, Published by Elsevier Korea LLC. This is an open access article under th

효율적 지구단위계획 수립을 위한 증강현실 기반 도시계획지원시스템 적용 연구

전병국,김철주,김창석,소진광,Jeon, Byeong-Kuk,Kim, Chul-Joo,Kim, Chang-Seok,So, Jin-Kwang 대한공간정보학회 2012 한국공간정보학회지 Vol.20 No.2

This paper is aimed at offering preliminary data that improve the effectiveness of district unit planning, which has adopted to make comfortable environment of national land, to prevent urban sprawl rural area and to perform systematic maintenance of the existing urban area, by case study analysis about the applied possibility of GIS-based augmented reality. To do this, we developed the augmented reality based urban planning support system and checked the parts that can be applied of augmented reality techniques in the process of district units planning. And we analysed about merits and demerits of augmented reality techniques through comparative analysis, which is about form, arrangement, use, and height of building, building coverage ratio, floor area ratio and landscape planning in the case study area, the Yeosu district(located in Seongnam).