한글 인식을 위한 CNN 기반의 간소화된 GoogLeNet 알고리즘 연구

김연규,차의영,Kim, Yeon-gyu,Cha, Eui-young 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.9

CNN(Convolutional Neural Network)을 사용한 심화 학습이 다양한 분야에서 진행되고 있으며 관련 연구들은 이미지 인식의 많은 분야에서 높은 성능을 보이고 있다. 본 논문에서는 한글 인식을 위해 대규모 한글 데이터베이스를 학습할 수 있는 CNN 구조의 간소화된 GoogLeNet을 사용한다. 본 논문에 사용된 데이터베이스는 대규모 한글 데이터베이스인 PHD08로 총 2,350개의 한글 문자에 대해 각 2,187개의 샘플을 가져 총 5,139,450개의 데이터로 구성되어 있다. 간소화된 GoogLeNet은 학습의 결과로 학습 종료 시점에서 PHD08에 대해 99% 이상의 Top-1 테스트 정확도를 보였으며 실험의 객관성을 높이기 위해 PHD08에 존재하지 않는 한글 폰트로 이루어진 한글 데이터를 제작하여 상용 OCR 프로그램들과 분류 성능을 비교하였다. 상용 OCR 프로그램들은 66.95%에서 83.17%의 분류 성공률을 보인 반면, 제안하는 간소화된 GoogLeNet은 평균 89.14%의 분류 성공률을 보여 상용 OCR 프로그램들보다 높은 분류 성공률을 보였다.

광역권 통근시간 만족도 영향요인 분석에 따른 대중교통 이용 활성화 방안연구

김연규,임한주,윤병조 한국재난정보학회 2023 한국재난정보학회 논문집 Vol.19 No.3

Purpose: The purpose of the Activation of Public Transportation by Analysis of Factors Influencing Satisfaction of Commuting Hours in the Metropolitan Area. Method: This study analyzed the factors affecting wide-area commuting time and satisfaction for office workers who perform wide-area commuting. Result: in the case of commuting satisfaction for wide-area commuting hours by region, commuting time satisfaction was relatively low in the metropolitan area as the average commuting time was high, and commuting time satisfaction was relatively high in the non-metropolitan area as the average commuting time was low. Conclusion: In the future, the government will establish or improve express railways and wide-area buses to reduce wide-area commuting time, and build urban highways to shorten passenger car use time, which will reduce commuting time, but qualitative indicators are more important. In other words, even if commuting time is long, life satisfaction increases, so quality of life is important, and it is necessary to improve commuting time satisfaction rather than simple indicators of commuting time, so both qualitative and quantitative aspects of commuting time need to be improved.

Design of Mobility System for Ground Model of Planetary Exploration Rover

김연규,엄위섭,이주희,심은섭 한국우주과학회 2012 Journal of Astronomy and Space Sciences Vol.29 No.4

In recent years, a number of missions have been planned and conducted worldwide on the planets such as Mars, which involves the unmanned robotic exploration with the use of rover. The rover is an important system for unmanned planetary exploration, performing the locomotion and sample collection and analysis at the exploration target of the planetary surface designated by the operator. This study investigates the development of mobility system for the rover ground model necessary to the planetary surface exploration for the benefit of future planetary exploration mission in Korea. First, the requirements for the rover mobility system are summarized and a new mechanism is proposed for a stable performance on rough terrain which consists of the passive suspension system with 8 wheeled double 4-bar linkage (DFBL), followed by the performance evaluation for the mechanism of the mobility system based on the shape design and simulation. The proposed mobility system DFBL was compared with the Rocker-Bogie suspension system of US space agency National Aeronautics and Space Administration and 8 wheeled mobility system CRAB8 developed in Switzerland, using the simulation to demonstrate the superiority with respect to the stability of locomotion. On the basis of the simulation results, a general system configuration was proposed and designed for the rover manufacture.

Multi-disciplinary and Multi-objective Design Optimization of a Lunar Rover System with Operational Considerations

김연규,안재명 한국항공우주학회 2022 International Journal of Aeronautical and Space Sc Vol.23 No.1

This study proposes a framework for designing/optimizing a Lunar rover for an early-phase mission concept trade-off. The proposed framework (1) develops models for major rover subsystems and lunar environment, (2) generates the rover’s operational schedule using the models, and (3) yields a set of attractive design solutions. The framework adopts a Pareto search algorithm to find the Pareto-optimal solutions for the multi-objective optimization problem considering multiple system-level metrics (i.e., cost, exploration range, scientific value). A case study on the design optimization of a realistic Lunar rover demonstrates the effectiveness of the proposed framework.

SIMMAN 2020

김연규,김동진,윤근항,권창섭 대한조선학회 2023 大韓造船學會誌 Vol.60 No.5

융 · 복합 시대의 리더 감독 유형, 심리적 계약위반과 종업원 저항에 관한 실증적 연구

김연규,소병삼,이선규,강은구,조유진 한국디지털정책학회 2015 디지털융복합연구 Vol.13 No.10

홉킨스의 사제 역할과 동성애적 욕망

김연규 한국현대영미시학회 2014 현대영미시연구 Vol.20 No.2

The purpose of this paper is to analyze the relationship between Hopkins’ priest roles and homosexual desires. Hopkins as a parish priest takes charge of priest’ fundamental duties such as the Communion. His desire for another male body is expressed through the sacrament, which grants him the privilege of a sacred union with another male, as in “The Bugler’s First Communion.” However, his eventual employment as a professor in Ireland takes him away from a setting wherein he can express and realize these desires in a sacred way. Therefore, it becomes impossible for him to couple with another male in an acceptable, divine fashion. Absent from this possibility, he is reduced to erotically watching the bodies of other males, as in “Harry Ploughman,” which makes him feel isolated and causes him to view himself as an “eunuch.” These two poems are the evidence of the sublimation of his homosexual desires into the religion and also of his terrible anguish in Ireland as a result of his alienation from the fundamental duties of the priesthood.

The Emerging US-China-Russia Strategic Triangle in Central Asia: Still Defying Great Power Expectations?

김연규 고려대학교 일민국제관계연구원 2012 국제관계연구 Vol.17 No.1

This paper seeks to make a contribution to the understanding of the nature and direction of the US-China-Russia relationship in Central Asia. There is no clear consensus in the academic literature as to how stable and sustainable it is. We do need more academic work done in this area, including consideration of the implications for Central Asian security and political relations. This paper offers a unique perspective on Chinese foreign policy in Central Asia and its dilemmas in dealing with Russia and America. Although China’s recent economic and military policies have stimulated arguments about a potential clash with the US, this article contends that China’s most lasting and tangible gains have come at Russia’s expense in Central Asia.

The Geopolitics of Caspian Oil: Rivalries of the US, Russia, and Turkey in the South Caucasus

김연규,엄구호 연세대학교 동서문제연구원 2008 Global economic review Vol.37 No.1

This study attempts to discern the overall direction of regional reorganization in Eurasia through looking at regional cooperation and the strategies and roles of powers in the South Caucasus from a sub-regional point of view. This study will attempt to look at sub-regional level cooperation of the countries in the South Caucasus region and the strategies of powers in the region, through the rivalry and difficulties between the United States, Turkey and Russia brought about through their construction of oil pipeline routes in differing directions to transport oil from Azerbaijan and Kazakhstan to the world market, as well as the national strategies of the innerregional countries that are choosing this option. This study attempts to discern the overall direction of regional reorganization in Eurasia through looking at regional cooperation and the strategies and roles of powers in the South Caucasus from a sub-regional point of view. This study will attempt to look at sub-regional level cooperation of the countries in the South Caucasus region and the strategies of powers in the region, through the rivalry and difficulties between the United States, Turkey and Russia brought about through their construction of oil pipeline routes in differing directions to transport oil from Azerbaijan and Kazakhstan to the world market, as well as the national strategies of the innerregional countries that are choosing this option.

흑해 지역주의 시도와 유럽연 합 경제질서로의 편입에 관한 고찰

김연규,강혜련,한구현,장지향,엄구호,성원용,안상욱,오경환,김인 한국 외국어 대학교 EU 연구소 2009 EU연구 Vol.- No.24