차량 결합시 충돌방지기술 적용 Feasibility test에 대한 고찰

이강미(Kang-Mi Lee),최돈범(Don-Bum Choi),허재영(Jae-Young Heo),이재호(Jae-Ho Lee),이강호(Kang-Ho Lee),오세화(Sea-Hwa Oh) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10

선로변경 및 열차조성을 위한 입환 그리고 구원운전시 열차 충추돌 사고가 빈번하게 발생한다. 이와 같은 사고 원인은 무선전호 미청취, 유도신호의 오인으로 인한 열차제어의 실패이다.즉, 수동운전시 결합차량의 기관사는 신호 유도원으로부터 정차된 차량까지의 남은거리 및 연결기 상태를 유도신호(동작, 깃발 등), 무전 등으로 전송 받아 직관적이고, 주관적으로 열차결합을 수행한다. 논문은 기존의 열차 결합시 충추돌 사고의 주원인인 인적오류를 저감하기 위한 센서, 통신기반의 ICT융합 철도안전사고방지 기술의 현차 적용을 위한 보완사항 및 요구사항 도출을 위하여, 신분당선 주식회사 차량을 대상으로 현차시험에 대한 고찰로, 상대거리기반 근접주행기술에 대한 소개, feasibility test에 대한 결과에 대하여 기술한다. Train collision accidents occur frequently when shunting and rescuing. Such incidents cause the failure of train control due to human error of missing guide signals (flag, voice or signal light). Namely, the driver of shunting vehicle drives by the seat of drive’s pants on remaining distance to target vehicle and coupler status from wayside signaling staff. In this paper, we study on the introduction and the result for feasibility test for the collision avoidance system reducing human error using senors, communication tech. in Shinbundang Gwanggyo Depot.

지속적인 절수가 Mongolian gerbil과 Sprague-Dawley Rat의 장기중량 및 혈액 성상에 미치는 영향에 관한 연구

이기훈(Ki-Hoon Lee),김환묵(Hwan-Mook Kim),현병화(Byung-Hwa Hyun),이철호(Chul-Ho Lee),송치원(Chi-Won Song),이경열(Kyoung-Youl Lee),김무강(Moo-Kang Kim),김명철(Myung-Chul Kim),이강이(Kang-lee Lee) 한국실험동물학회 2000 Laboratory Animal Research Vol.16 No.2

중소기업 경쟁력 강화를 위한 기업 간 공유경제 모델 개발

이강배 ( Kang Bae Lee ),최형림 ( Hyung Rim Choi ),홍순구 ( Soon Goo Hong ),조민제 ( Min Je Cho ) (주)엘지씨엔에스(구 LGCNS 엔트루정보기술연구소) 2015 Entrue Journal of Information Technology Vol.14 No.1

무한경쟁과 세계적인 불황으로 현재 많은 기업들이 핵심역량을 강화하는 전략에 집중하고 있다. 최근 중소기업 육성을 위한 돌파구로 공생을 위한 많은 방안들이 제시되어 왔고, 많은 중소기업들이 정부의 지원 아래 협업 및 협력으로 투자비용과 위험은 분산시키고, 자원과 이익을 공유할 수 있는 방안을 모색하고 있다. 최근 등장한 공유경제(Sharing Economy)는 유휴 재화나 서비스를 공유하여 그 효용을 높이고자 하는 경제모델로, 소비지향의 전통적인 산업과는 달리, 세계적인 경기침체로 과소비를 줄이고 환경오염에 대한 대안을 모색하는 분위기에 편승하여 빠르게 확산되고 있다. 하지만 대부분 공유경제는 기업이 개인 소비자에게 서비스를 제공하는 방식 또는 더 나아가 개인 소비자 간의 거래 모델이 주를 이루고 있다. 이에 본 연구에서는 기업 간 공유경제의 개념과 현황을 정리하고 성공요인을 조사하였다. 이를 토대로 기업 간 공유경제 도입효과에 대한 근거와 비용 및 이익 배분 방안을 모색하였다. 또한 기업 간 공유경제 적용 및 확산을 위한 비즈니스 모델과 시스템 모델을 제시하였다. Recently, many companies have been focusing on setting up the strategy to strengthen their core competencies because of limitless competition and economic recession. Many symbiotic solutions have been suggested as a breakthrough to promote small businesses. Moreover many small businesses disperse investment expenses and risks through co-operation and collaboration, and are seeking for solution to share resources and profits. The Sharing Economy which is recently introduced is a economic model to increase the utility of them by sharing unemployed goods or services. This model is being spread out fast, going along with the atmosphere to find alter-natives which can reduce excessive spending and environmental pollution. As a concept of Collaborative Consumption, most transaction patterns of Sharing Economy mainly consist of the way companies provide consumers with services or the trade model between individuals. This paper organizes a theoretical system of business to business Sharing Economy companies for small businesses, and the success factors were derived. As well, it proposes the cost and profit distribution plan for the successful introduction of business to business Sharing Economy. And the business model and system model that can be apply and spread to the sharing economy between enterprises will be proposed.

게인즈의 『죽음 앞의 깨달음』에 나타난 치유하는 연대

이강선 ( Kang Sun Lee ) 한국영미문화학회 2017 영미문화 Vol.17 No.1

Gaines depicts the process of transformation of a black young who accepts his execution with dignity in A Lesson Before Dying. There two personas of the protagonist, Jefferson, appear in this novel. The former seen in the black and white community is the persona of falsehood and submission, and the latter appeared in the black community is the true persona. The former, the pig persona in black-and-white community is created, forced onto them by whites and the human persona in the black community is made by their own standards without being forced. Jefferson has been depersonalized by his pig persona. He implements their false persona by mimicking pigs to confront its reality. And then he retrospects the pleasure of relationship throughout his own life. Grant`s expensive gift, the radio, becomes a trigger to realize the significance of his existence and the social solidarity. Moreover, many black visitors look at him with expectant eyes of fulfilling their historical burden. After all, Jefferson is executed as a human being with dignity, and the transformation of Jefferson from a pig to a human is getting rid of the white values and standing on the black values. In other words, it is the procedure of creating the new myth out of the false myth, from meaningless life to meaningful death.

고려 원종대 대원(對元) 교섭에서의 ‘송(宋)’의 의미

이강한(Lee, Kang-Hahn) 역사문화학회 2014 지방사와 지방문화 Vol.17 No.1

고려가 원측의 추궁을 피하려 일종의 핑계로 남송을 거론하곤 했던 점은 기왕의 연구에서 언급된 바 있다. 본고에서는 원종대 고려정부가 몽골 원조를 상대하는 과정에서 ‘남송’이라는 변수를 어떻게 활용하였는지를 살펴보고자 하였다. 원종은 몽골의 본격적인 압박과 간섭에 직면한 국왕으로서, 원의 여러 압박으로부터 고려를 지켜 내는 것에 주력하였다. 남송이라는 존재를 이용, 이미 존재하지 않았던 ‘고려와 남송간의 제휴’ 가능성을 제기하는 전략을 취한 것도 그 일환이었다고 할 수 있다. 남송선박의 한반도 방문에 대한 쿠빌라이의 추궁, 원종의 답변, 원제국 문인의 문집에 묘사된 원 관료들과 고려인 이장용의 대화 등을 통해 그를 확인할 수 있다. 고려의 국왕과 신료가 복수의 기회를 통해 ‘고려와 남송이 언제든 유대할 수 있다’는 가능성을 몇 년간 몽골조정에 지속적으로 주입시킴으로써, 고려에 대한 몽골의 압박을 새로운 각도에서 헤쳐 나가고자 했음이 흥미롭다. 이러한 모습들에 대한 주목을 통해, 고려-원제국 관계 형성기의 여러 모습들을 재평가해 볼 필요가 있다. King Wonjong of Goryeo inherited from his father Gojong a specific situation in which the Southern Sung was no longer a relevant entity as a potential ally or at least a counterpart to be expected in a diplomatic relationship. Merchants or naval vessels either sporadically visiting or passing by the Korean peninsula were mere objects of concern in the eyes of the Goryeo government, and the Chinese authorities in the harbor regions of the Jiangnan region were not so interested in maintaining exchanges with the Goryeo dynasty. The entire Southern Sung was put under heavy fire in its conflict with the Mongol Yuan empire, and was anything but a probable ally to Goryeo which was fighting with the Mongols itself. Economic trades with Southern Sung only meant more materials (that came from China) to be obfuscated by the Mongols. To Goryeo, Southern Sung was no longer an option to pursue in diplomatic terms. Under such circumstances, Wonjong came to face interference and intervention by the Mongol Yuan government. The highest priority of the Wonjong government became protecting the interests of Goryeo from such interference. There was nothing the leaders of the Goryeo dynasty would not consider in achieving such goal. So, Southern Sung suddenly became a leverage in Goryeo’s strategy dealing with the Mongols. The Mongol Yuan government was in desperate need of Goryeo’s cooperation in launching its campaign in China and Japan. And for that very reason it was also deeply concerned that Goryeo would try to break away from Yuan’s clutches and form a relationship with China, as it had done in the past. Noticing such concern and Yuan’s own busy timetable, Wonjong, while denying any possibility or intention of forming a relationship with the Southern Sung whenever Yuan would accuse it for scheming behind Yuan’s back, seemingly intentionally had one of his closest officials (in this case Yi Jang-yong) leak some official statements that would arouse Yuan’s suspicion, while himself excluding in a report a crucial incident that occurred between Goryeo and Sung that could have easily nullified Yuan’s suspicion of Goryeo. Such orchestrated efforts seem to have been a campaign of ‘disinformation’, designed to keep Yuan on its toes, force the Mongols to back off from making unilateral threats and demands, and most importantly, delay the Japanese campaign for several years.

APQP와 DFSS를 연계한 자동차부품연구개발 단계에서 품질보증에 관한 연구

이강인 ( Kang In Lee ),김재휴 ( Jae Hyu Kim ) 한국품질경영학회 2011 품질경영학회지 Vol.39 No.1

Today, due to the global recession car sales have been decreased rapidly and auto makers are competing continuously to expand their market share. Automakers are struggling in order to secure competitive cost and quality through continuous cost reduction and quality innovation activities to win in the competition. In this situation, auto parts makers are trying to reinforce price competitiveness by reducing COPQ (Cost Of Poor Quality) in the mass production stages by securing the quality of components in advance from the design stage through DFSS (Design For Six Sigma) activities which is 6 sigma approach in the R&D field. However, auto parts makers have been undergone various confusion, feeling difficulties to get interrelationship among various activities. Thus, this study is going to suggest approach method for much more effective R&D activities by securing interrelationship between ISO/TS 16949 system established in the auto parts industry and DFSS activities.

Use of Recycled PET Particles as a Component of Growing Media

Kang Mo Lee(이강모),Su Min Park(박수민),Byoung Ryong Jeong(정병룡) 한국원예학회 2007 한국원예학회 학술발표요지 Vol.2007 No.6

풍화도 변화에 따른 화강풍화토의 파쇄특성

이강일(Kang-Il Lee),윤영구(Young-Goo Yoon),이재욱(Jae-Wook Lee) 한국지반신소재학회 2013 한국지반신소재학회 논문집 Vol.12 No.1

본 연구는 포천에서 채취된 화강풍화토를 불산용액을 이용하여 인공적으로 풍화를 진행시켜서 풍화도 변화에 따른 화강풍화토의 입자파쇄 특성을 연구하였다. 이를 위해 조성광물 분석을 통한 풍화지수 결정 후, 입도분석, 표준다짐시험 및 변수위투수시험을 실시하였다. 본 연구결과는 풍화가 진행되면서 전체입경분포에서 입자파쇄가 진행되었으며, 입경 D₁₀과 D₅₀에 대한 비표면적을 비교한 결과 입경 D₅₀ 이하의 작은 입경분포에서 입자파쇄가 활발하게 진행된 것으로 나타났다. 또한 다짐에 의한 입자파쇄 결과는 최적함수비 부근에서 입자파쇄가 최대치를 보였고 풍화가 진행됨에 따라서 비표면적 증분비가 감소하는 것으로 보아 풍화지수가 높을수록 입자파쇄에 둔감한 것으로 나타났다. In this study, the characteristics of particle crash of decomposed granite soil sampled at Pocheon area were presented. The degree of weathering was artificially achieved by means of hydrofluoric acid. Weathering index was firstly determined by the analysis of mineral composition. Then, particle distribution, permeability tests were conducted. The results showed that weathering effects on particle crash over entire particle sizes. Comparative analysis on specific surface between D₁₀ and D₅₀ indicated that the smaller the particle size, the more the particle crash. In addition, the most particle crashing due to compaction appeared around the optimum moisture content. The incremental ratio of specific surface appeared to decrease as weathering proceeds, which means that the higher the weathering index the less the particle crash.

Soybean Whey에 培養한 Candida guilliermondii의 菌體組成

이강자(Kang Ja Lee) 한국식품영양과학회 1982 한국식품영양과학회지 Vol.11 No.1

豆腐 製造時 放流되는 soybean whey에 4%의 廢糖密 및 0.5% ammonium acetate 를 添加하여 Candida guilliermondii(KFCC 35120)를 培養하여 liter 當 8.1g의 乾燥菌體를 얻었으며 菌體 分析 結果는 다음과 같다.<br/> 1. 乾燥菌體는 灰水化物 39.3%, 蛋白質 40.5%, 脂質 3.9%, 核酸 9%, 灰分 6%를 含有하였다.<br/> 2. Amino acid 組成은 lysine 含量이 約 10%이었고 glutamic acid가 18%로서 가장 높은 含量을 나타내었다.<br/> 3. 脂肪含量은 C. guilliermondii가 對照의 S. cerevisiae 보다 1.7~2.5倍 높은 含量을 나타내었으며 兩菌株가 모두 whey 單獨으로 培養한 菌體가 廢糖蜜을 添加한 것 보다 約 2倍의 높은 含量을 나타내었다.<br/> 菌體의 脂肪酸 組成은 oleic acid가 48%로서 가장 높은 含量을 나타내었고, linoleic acid와 linolenic acid 含量이 各各 17% 및 4%로서 S. cerevisiae에 比하여 各各 9倍와 24倍에 達한 反面에 palmitic acid 含量은 約 5.5%로서 S. cerevisiae에 比하여 낮았다. A strain of yeast (Candida guilliermondii KFCC 35120) was cultivated by using the soybean whey with supplement of blackstrap molasses (4%) and ammonium acetate (0.5%). By the cultivation continued for 48 hours, 8.1g of dry cell was produced.<br/> The cell was consisted of carbohydrate 39.3%, protein 40.5%, lipid 3.9%, nucleic acid 9% and ashes 6%. The protein was analyzed to contain 18% of glutamic acid and 10% of lysine. Other amino acids showed a content near that of FAO reference protein except Methionine.<br/> Total lipid content was varied by nutritional condition especially by the kind of carbon source, however it showed a content 1.7 to 2.5 times higher than that of Saccaromyccs cerevisiae.<br/> The lipid contain 48% of oleic acid, 17% linoleic acid and 4% linolenic acid. The content of linoleic and lonolenic acid was higher than that of S.cerevisiae by 9 and 24 times, respectively.

틸팅열차 차상신호장치 교정유지보수 평가에 관한 연구

이강미(Lee Kang-Mi),신덕호(Shin Ducko),백종현(Baek Jong-Hyen),이재호(Lee Jae-Ho) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

Maintenance is classified preventive maintenance before performing equipment failure and corrective maintenance after performing equipment failure. In preventive maintenance, we may analyze the failure data to end from beginning of equipment and allocate maintenance method and calculate maintenance cycle quantitatively by the failure data analysis. So, it has a merit to reduce system maintenance cost and to operate effectively but, it require high cost in system introducing and continuous operation to end of system. In corrective maintenance, we may calculate MTTR(mean time to repair) quantitatively based on function failure time. it can be based on establishing maintenance system for operation efficiency. In this paper, we may reflect the MTTR for the onboard equipped in Tilting train to establish maintenance system for Tilting train operation efficiency.