자동차산업의 품목코드 표준화에 대한연구

강민식,임익성,Kang, Min-Sik,Im, Ik-Sung 한국디지털정책학회 2010 디지털융복합연구 Vol.8 No.4

Auto-industry is very difficult to standardize item code generation rule, because it has more than 20,000 parts in this industry. As finished good companies have already used the ERP system such as SAP, they have a good Master Data Management(MDM) system. However, since many supplier companies have poor MDM system, they have a lot of barriers on system implementation like ERP, MES. PDM systems. This study surveys various benchmarking sites and investigates the standardization of item code of the auto-parts manufacturing companies. Finally, this study proposes the implementation guide (IMG) of auto-industry MDM standardization.

900 MHz대 RFID 휴대 리더용 원편파 안테나 소형화

강민식,최익권,Kang, Min-Sik,Choi, Ik-Guen 한국전자파학회 2008 한국전자파학회논문지 Vol.19 No.4

본 논문에서는 UHF 대역 RFID 휴대 리더용 안테나로 원편파를 갖는 마이크로스트립 패치 안테나의 소형화를 제시한다. 제안된 안테나는 패치에 4개의 I 슬롯을 가지고 있으며, I 슬롯이 없는 같은 구조의 패치 안테나와 비교하여 안테나 크기가 감소하였다. 두께가 6.4 mm인 FR4 기판으로 제작된 안테나는 크기가 $76{\times}76\;mm$로 소형이면서, 반사 손실 -10 dB 대역폭은 $938{\sim}975\;MHz$, 대역폭 내 이득은 $-0.88{\sim}-2\;dBi$, 그리고 축비는 $3.27{\sim}13.21\;dB$를 가진다. This paper presents the miniaturization of circularly polarized microstrip patch antenna for UHF-band RFID portable reader. The proposed antenna has a group of four I-slots on a conventional corner-truncated square microstrip patch and it is shown that the antenna size is reduced compared to the antenna without I-slots. A 76 mm by 76 mm small antenna with four I-slots is fabricated with 6.4 mm thick FR4 substrate and its 10 dB return loss bandwidth, the gain and the axial ratio are measured to be $938{\sim}975\;MHz$, $-0.88{\sim}-2\;dBi$, and $3.27{\sim}13.21\;dB$ within the 10 dB return loss bandwidth, respectively.

조선 말기 회인현의 신분·직역과 남정책

강민식(Kang, Min-sik) 忠北大學校 中原文化硏究所 2012 중원문화연구 Vol.18·19 No.-

Chungcheongdo Heoinhyun remained as Gunhyun until 1914 and now it belongs to two myuns of Boeungun. Through Namjungchaek which was written in 1876, the structure of myun-rhee in hyun, social status, occupational function of those days can be acknowledged. Namjungchaek is compiled with the information of six myuns and rhee, tong, ho which belongs to each myun. First of all, each myun`s rhee was constantly expanded course by course. The boundary of Eupnaemyun and Dongmyun were more expanded to the east; Seomyun and Nammyun were each extended to the west and the south; Kangeoimyun and the northem part of Peebanryung, which belonged to the remained Hoeinhyun, usually maintained their situations. The expansion of rhee was resulted from the increase of pyunho and hogu. In late Chosun dynasty, the number of ho increased 660 percent more than the early Chosun period; hogu increased 450 percent than then; both of them continuously increased until the latter period of Chosun dynasty. In contrast, the number of rhee and tong per myun were similar to only smaller myun. I analyzed constitution of each social status in Hoeinmyun by 1) dividing the population into Yangban, Jungin, Yangin, Chunmin and then 2) researched the proportion of those status per myun, the states of status, and occupational functions. Contrast to the conventional understanding that Yangbanho were over 70 percent after mid-19th century, the proportion of it in Hoeinmyun were only 56.3 percent. It can be understood that the dissolution of social status in this place occurred much later than other region, which is caused by the residing clans` fundamental domination of the region, whom grasped the local consensus. Through this analysis, I discovered that the foundation of the local government office and the local educational institute, Hyanggyo, caused the predominance of Junginho in Eupnaemyun and Dongmyun. Also it is clear that both the proportion of Yuhakho and their influence were increased in the local borders. The residing kin like Younghae Parks in Nulgokrhee, Namwon Yangs in Gumgokrhee and Hangjungrhee, and Munwha Ryus in Gochochoenrhee predominantly constituted collective and systematic residence in those areas.

CLSVOF-IB 방법을 이용한 자유 표면에서의 연성체 운동 수치해석

강민식(Min Sik Kang),박성군(Sung Goon Park) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

DID(Digital Information Display)를 통한 효과적인 광고 제공시스템에 관한 연구

강민식(Min-Sik Kang) 한국디지털콘텐츠학회 2013 한국디지털콘텐츠학회논문지 Vol.14 No.1

The advertisement using DID(Digital Information Display) has been a huge increase in many public spaces. Many company has been advertise their products through DID in recent. In this paper, we suggest more effective advertisement system on DID for advertisers. This system can provide a floating population, operation information and other useful informations for advertisement . The advertisers can choose and buy the advertisement that they want.

연성체를 이용한 열전달 향상 시스템 수치해석

강민식(Min Sik Kang),박성군(Sung Goon Park) 대한기계학회 2021 大韓機械學會論文集B Vol.45 No.3

열전달은 다양한 산업에서 시스템 설계 시 반드시 고려해야만 하는 중요한 분야이며, 많은 연구자들이 열전달을 향상시키기 위해 다양한 형태의 와류 생성기를 도입하였다. 강체 와류 생성기의 경우 높은 압력 강하로 인해 에너지 손실이 크게 발생하여 최근에는 연성의 성질을 갖는 와류 생성기를 이용하여 열전달 향상을 도모하는 연구들이 활발히 진행되고 있다. 본 연구에서는 채널 중심축에 대해 비대칭적으로 기울어진 연성 와류 생성기를 이용한 열전달 향상 시스템을 수치적으로 분석하였으며, 유체-연성체-열 상호작용을 고려하기 위해 가상경계기법을 사용하였다. 와류 생성기의 굽힘 계수가 일정할 때, 기울어짐 각도가 증가할수록 와류 생성기의 펄럭임 현상이 크게 나타났으며, 펄럭임 운동에 의해 와류 구조가 생성되어 열전달이 증가되었다. 기울어짐 각도가 1/4 π 및 3/4 π일 때, 열전달 값은 각각 2%, 116%증가함을 확인하였다. Heat transfer is an important aspect to consider when designing systems in various industries, and many researchers have introduced vortex generators to improve the heat transfer. In the case of a rigid vortex generator, energy loss is generated owing to a high pressure drop. In recent years, numerous studies have been conducted to improve heat transfer using a flexible vortex generator. In this study, an asymmetric inclined flexible flag was adopted as the vortex generator and an immersed boundary method was used to consider the fluid-flexible body interaction. When the bending rigidity of the flexible vortex generator was constant, the fluttering motion of the vortex generator increased as the inclination angle increased, and vortex structures were produced by the fluttering motion, thereby increasing the heat transfer. When the inclination angles were 45° and 135°, the heat transfer was observed to be increased by 2% and 116%, respectively.

신라 서원경의 위치와 범위

강민식(Kang, Min-sik) 충북대학교 중원문화연구소 2017 중원문화연구 Vol.25 No.-

First, how to understand the background of the Silla installation Seowon-sogyeong(西原小京) investigate whether advance to Cheongju. 494 years Silla army, but failed to advance in Cheongju, Chungju could take 550 years and accounted for Geumhyeon-seong(金峴城) and Dosal-seong(道薩城). Silla 685 years has installed Sogyeong(小京) in Cheongju. Sokeong was installed for various reasons. Seowonsogyeong was installed to control the old Baekje area. It was also a strategic point for traffic heading north. And it is related to the Baekje revival of military activities. After 685 years of Silla is installed in Cheongju, each had accumulated in the fortress and fields. The war situation was not completely finished yet. Therefore, Seowonsogyeong center can be divided as was the large size of the acidic and flats. The group was taken from the building pieces and letters that are found in the plains with considerable acidity is a clue to understanding the structure of the profession blind. Outside was a small acidic acid defensive Seowonsogyeong. Finally, a small installation of Seoul was a transitional aspect. 757 years after the actual installation 9 Ju(州) had no real role.

900 ㎒대 RFID 휴대 리더용 원편파 안테나 소형화

강민식(Min-Sik Kang),최익권(Ik-Guen Choi) 한국전자파학회 2008 한국전자파학회논문지 Vol.19 No.4

본 논문에서는 UHF 대역 RFID 휴대 리더용 안테나로 원편파를 갖는 마이크로스트립 패치 안테나의 소형화를 제시한다. 제안된 안테나는 패치에 4개의 I 슬롯을 가지고 있으며, I 슬롯이 없는 같은 구조의 패치 안테나와 비교하여 안테나 크기가 감소하였다. 두께가 6.4 ㎜인 FR4 기판으로 제작된 안테나는 크기가 76×76 ㎜로 소형이면서, 반사 손실 -10 ㏈ 대역폭은 938~975 ㎒, 대역폭 내 이득은 -0.88~-2 ㏈i, 그리고 축비는 3.27~13.21 ㏈를 가진다. This paper presents the miniaturization of circularly polarized microstrip patch antenna for UHF-band RFID portable reader. The proposed antenna has a group of four I-slots on a conventional corner-truncated square microstrip patch and it is shown that the antenna size is reduced compared to the antenna without I-slots. A 76 mm by 76 ㎜ small antenna with four I-slots is fabricated with 6.4 ㎜ thick FR4 substrate and its 10 ㏈ return loss bandwidth, the gain and the axial ratio are measured to be 938~975 ㎒, -0.88~-2 ㏈i, and 3.27~13.21 ㏈ within the 10 ㏈ return loss bandwidth, respectively.

5세기 후반 錦江 유역을 둘러싼 三國의 동향

姜珉植(Kang Min-Sik) 한국고대사탐구학회 2010 한국고대사탐구 Vol.6 No.-

百濟와 高句麗의 충돌이 계속되던 5세기 후반 新羅는 錦江 상류 지역에 三年 山城과 一牟城을 쌓았다. 그것은 백제가 고구려의 침입을 계속 받으면서 방어에 한계를 보이기 시작하자 고구려군의 西進을 방어하고 신라와의 군사협력을 담당하고 있었던 재지세력의 요구가 관철된 것으로 보인다. 금강 중ㆍ상류 지역 세력은 5세기 초부터 한강 유역을 통해 서진해 오던 고구려군을 방어하던 집단으로 475년을 전후한 시기에 중앙 정계에 등장하여 熊津都邑期 초기 주요한 세력으로 성장하고 있었다. 특히 신라와의 군사적 협력이 가능할 수 있었던 배경에는 親新羅的 재지세력으로 ?氏 세력과 沙氏 세력이 주목된다. 이들이 중앙 정계에 두각을 나타냄으로써 향후 東城王代의 대외정책을 결정짓는 주요한 변수가 될 수 있었다. 그리고 충주 지역을 거점으로 하여 동쪽에서 백제를 압박하던 고구려군은 481년 신라를 직접 공격한 후 484년 웅진을 직접 압박하였다. 484년 백제와 신라는 고구려의 공격을 母山成에서 양국의 군사협력으로 일단 저지할 수 있었으나 고구려군의 일부는 청원 지역까지 진출하여 웅진을 압박하기에 이르렀다. 그러나 494년 ?水之原 전투를 통해 고구려군은 백제와 신라 연합군에 의해 완전히 패퇴하였다. 한강 이남의 경기 남부 지역에 자리한 고구려계 고분은 5세기 후반, 494년 살수지원 전투로 완전히 패퇴하기까지 군사활동의 결과로 볼 수 있다. Silla built SamNyunSanSung(三年山城 : three year mountain fortress) and IlmoSung(一牟城 : one cow fortress) in the upstream area of Keum River(錦江) while Baekje and Goguryeo were continuously having conflicts in the late 5th century. That seemed as a request for alliance in defense against Goguryeo from Baekje when Baekje ran into their limitation against Goguryeo’s frequent invasions. The regional power around the midstream and upstream area of Keum River was the group defending against the Goguryeo army slowly moving forward through Han River and was advancing as the primary power of Woongjin(熊津) Capital of central political arena around 475 A.C. Specially, Sa family(沙氏) of Chungjoo Shinbongdonggobungoon erecting group and Baek family(?氏) were thought to be responsible for possible cooperation of Silla. Due to the strong involvement of the two groups in the central political arena, they played a major roll in the future policy Dongsung Kingdom toward other countries. The Goguryeo army based on Choongjoo putting a great amount of pressure toward Baekje directly invaded Silla in 481 A.C and then directly started putting pressure on Woongjin. During the battle of Mosan Fortress in 484 A.C, the Goguryeo army was stopped by the alliance force of Baekje and Silla, but some of Goguryeo army reached Chungwon area putting pressure on Woongjin. However, the army of Gogureyeo was completely defeated by the alliance force of Baekje and Silla in the battle of Salsoojeewon in 494 A.C. The ancient burial site in Goguryeo style located in southern Kyunggi area of south of Han River can be explained by the activities of the Goguryeo army in the late 5th century. Specially, it can be determined as the activities until their complete defeat in the battle of Salsoojeewon in 494 A.C.

자동변속기 알루미늄 제품 마모 현상 분석

강민식(Min Sik, Kang),김진우(Jin Woo, Kim) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11