MLDAM : 공간 객체의 효율적 위상 표현을 위한 다단계 데이타 추상화 모델

김종훈 인하대학교 1998 국내박사

대형 디젤 배기가스에서 NO2에 의한 디젤 매연 여과 필터의 재생 특성에 관한 연구

김종훈 전북대학교 대학원 2009 국내석사

The air pollution due to the rapid industrial development has occurred and has critical influence on environment and society, so people particularly more interested in the air pollution caused by the vehicles such as car and truck. Especially in the case of diesel engine vehicles, they have so many advantages of high power and low fuel consumption in comparison with gasoline fueled vehicles. Although diesel engines have advantages of high power and low fuel consumption in comparison with gasoline engines, several problems with exhaust gas emitted by diesel engine must be solved. The major concern is a reduction of the particulate matter (PM) which affects the organic health of people and environmental impact. To reduce emission of diesel soot, diesel particulate filter (DPF) has become widely known as an indispensable after-treatment component of the purification of the particulate matter in the diesel exhaust gas and has been extensively studied by many researchers. The most important issue in the development of DPF is the regeneration of the particulate matter trapped in the filter. Because of the fuel penalty resulting from the increased backpressure of the loaded DPF, it is necessary that the filter be regenerated, either periodically or continuously, during regular engine operation. There exist so various methods for regeneration of the diesel soot captured by the filter. Of these, the NO₂ regeneration which can oxidize the diesel soot at even lower temperature than that of thermal regeneration using O₂ is proposed and widely used to continuously regenerate the diesel soot. However, due to the regeneration of the trapped diesel PM which is associated with a lot of variables, there is a limit with experimental research. Consequently, the mathematical model which is the possibility to assist an experiment feels a necessity and has become extensively adopted to describe the experiments. In this study, the purpose of this paper is to understand the tendency of regeneration characteristics according to changes of exhaust gas temperature and O₂ concentration and then finally numerical simulation to predict the NO₂ concentration required for continuous regeneration of the particulate matter deposited in the DPF is performed by using the 1D simulation code. After conducting the validation of the present study comparing the present result with the previously published data, various numerical experiments are conducted including the proper NO₂ concentration according to the various soot mass flow rate, and then a correlation between the particulate matter flow rate and NO₂ concentration for continuous NO₂ regeneration is suggested.

타이어 産業의 技能 習熟度에 관한 硏究

김종훈 한남대학교 1997 국내석사

M-WiMAX 시스템에서 다중 접속 간섭에 강건한 레인징 성능 향상 기법

김종훈 인하대학교 정보통신대학원 2010 국내석사

3세대 이동통신 시스템의 개발 이후, 고속 이동 환경에서도 고속의 멀티미디어 서비스가 가능한 광대역 무선 접속 시스템에 대한 연구가 증가하고 있다. 3.5세대 및 4세대 광대역무선 접속 방식으로 Orthogonal Frequency Division Multiple Access (OFDMA) 방식이 여러 표준안에서 주목 받고 있다. OFDMA 방식은 여러 사용자들에게 각기 다른 직교성을 가진 부반송파들을 할당하여 동시에 정보를 전송하는 무선 접속 방식이기에 단일 반송파 무선 접속 방식에 비해 협대역 간섭에 강인하며 사용자간의 효율적인 자원할당이 가능하다는 장점을 가지고 있다[1]. 하지만, 상향링크에서는 여러 사용자들이 전송하는 각각의 신호가 서로 다른 지연시간으로 인해 한 OFDMA 심볼 내에 선형적인 위상 성분이 발생하고, 이 위상 성분들이 합성되어 다중 접속 간섭 (Multiple Access Interference : MAI) 으로 기지국에서의 레인징 코드 검출 및 지연시간 추정 성능을 열화 시키는 원인이 된다. 따라서, 본 논문에서는 각 사용자에 의해 발생되는 MAI 를 최소화하고, 레인징 코드 검출 및 지연시간 추정 성능을 향상시키기 위해 기존의 방법에 직렬 간섭 제거 (Successive Interference Cancellation : SIC) 를 적용한 레인징 기법을 제안한다. 모의 실험을 통해 기존의 방법보다 향상된 성능을 보였으며, 3GPP LTE 의 랜덤 액세스와의 비교를 통해 M-WiMAX 의 레인징 성능 한계를 확인하였다.

커뮤니케이션 능력이 페이스북의 중독적 사용에 미치는 영향 : 우울감과 사회불안의 매개효과를 중심으로

김종훈 연세대학교 커뮤니케이션대학원 2017 국내석사

본 연구는 일상생활에 부정적인 영향을 미칠 수 있는 중독적 페이스북 사용의 원인이 커뮤니케이션 능력에 따른 심리사회적 문제와 관련이 있을 것이라는 문제의식에서 출발하였다. 이에 중독적 페이스북 사용에 영향을 줄 수 있는 심리사회적 문제로 우울감과 사회불안을 선정하였다. 구체적으로 본 연구는 커뮤니케이션 능력과 중독적 페이스북 사용간의 관계에서 우울감과 사회불안의 매개효과를 구조방정식모형 분석을 통해 규명하고자 하였다. 온라인 설문을 통해 데이터를 수집하였고, 페이스북 사용기간이 6개월 이상인 사용자와 주 1회 이상 페이스북을 사용하는 20대 성인 남녀 317명을 대상으로 설문조사를 실시하였다. 구조방정식모형 분석 결과, 연구모형 내에서 커뮤니케이션 능력은 중독적 페이스북 사용에 직접적인 영향을 미치지 않았으나, 우울감과 사회불안을 거쳐 간접적으로 영향을 미치는 것으로 나타났다. 즉, 커뮤니케이션 능력이 낮은 사람들은 우울감과 사회불안이 높고, 우울감과 사회불안이 높은 사람들은 중독적 페이스북 사용이 많은 것으로 나타났다. 본 연구는 이러한 분석 결과를 바탕으로 중독적 페이스북 사용에 영향을 미치는 심리사회적 문제의 중요성을 재확인 하였으며, 선행변수로 커뮤니케이션 능력의 역할을 검증했다는 점에서 연구의 함의를 갖는다. This study was motivated by the recognition that the cause of addictive use of Facebook is related to the psychosocial problems of communication competence. Depression and social anxiety that may provoke the addictive use of Facebook were selected as psychosocial problems. In this study, the structural equation modeling analysis was adopted to analyze the mediating effect of depression and social anxiety on the relationship between communication competence and addictive use of Facebook. The data presented in this research were collected through online questionnaires, and the questionnaires were conducted on 317 men and women in their twenties who have used Facebook more than once a week, for more than six months. The result concluded that addictive Facebook use was not directly influenced by the individuals’ communication competence, however, indirectly influenced by depression and social anxiety. In other words, people with low communication skills showed high levels of depression and social anxiety, and people with high levels of depression and social anxiety were more likely to use Facebook addictively. Based on the results, this study reaffirmed the importance of the psychosocial problems that provoke the addictive use of Facebook and verifies the role of communication competence as a leading variable.

기니픽의 회장평활근에서 NANC 신경전달물질의 작용기전

김종훈 연세대학교 1998 국내박사

職業軍人 職務 滿足度 檢査道具 製作 硏究 : 陸軍 中堅 將校用

김종훈 崇實大學校 産業大學院 1996 국내석사

황룡사지 출토 일휘문 막새기와 연구

김종훈 경주대학교 일반대학원 2010 국내석사

A Study on Hwangyong temple Ilhwi-moon(日暉文) roof-end tiles of koryo dynasty Kim, Jong Hoon Department of resources studies The Graduate School Gyeongju University (Supervised by Professor Yim, Yong Ae) (Abstract) In this research, I look out on Ilhwi-moon roof-end tiles from Hwangyong temple Site that stands for roof-end tiles of the Koryo dynasty. First, I study on the origin and the term of Ilhwi-moon (日暉文) roof-end tiles) And I could study on the origin of Ilhwi-moon (日暉文) roof-end tiles by researching a lot of materials from ancient China to Korea. As a result, it seems to be derived from roof-end tile with lotus design and hemisphere in the centre rather than have relation to roof tile with monster-mask design(鬼面瓦). Second, researchers use a variety of terms of roof-end tiles. But in this study, I use the term lhwi-moon roof-end tiles . I divided the term of each part into centre part(中央剖), attachment part(附屬剖), circumference part(周緣剖). and I tried to make more detailed, systematic terms than existing terms by subdividing it. Third, I confirmed that lhwi-moon roof-end tiles look widely distributed over the country from the early 12 century. Also, I confirmed these tiles come in many different types in spite of simple design. On the basis of a recent excavation, I found very similar types to lhwi-moon roof-end tiles were used in adjacent areas that are Koyro palace site, Bong - up temple site in Ahn-Sung, and Hyeum-won site in Pa-Ju. Also, I found very similar design to Ilhwi-moon roof-end tiles in distant areas that are Koryo palace site, Hyeum-won site in Pa-Ju, and Hwangyong temple Site. About the present condition of Koryo dynasty in Kyong -Ju lhwi-moon roof-end tiles, lhwi-moon roof-end tiles were excavated at more than 10 places in Kyoung-ju. Because of this, I conclude that temples from Koryo Dynasty period in Kyong-ju last for some time and lhwi-moon roof-end tiles were produced and used. Four, I did type classification, design changes, chronical attemptation of Ilhwi-moon roof-end tiles which is excavated in Hwangyong temple, one of the biggest temples in Kyong -Ju area. at first, we can know that Koryo dynasty Hwangyong temple has been repaired and preserved by effort as a significant temple in Kyong-Ju through a bunch of excavated articles. It is hard to know the exact chronicle of Hwangyong temple Site Ilhwi-moon roof-end tiles because most roof-end tiles are discovered in wastes field or a disturbance layer. And excavation report is insufficient in analysing patterns of Ilhwi-moon roof-end tiles. So I attempted type classification, design changes and recording chronologically on Ilhwi-moon roof-end tiles written in excavation report. As a preparatory stage of this research I established type classification standards on Hwangyong temple site Ilhwi-moon roof-end tiles. At first, I set up type classification in two aspects, 1. size -big, small- 2. a shape of a cross section at centre part - no-story type, story type, and hemisphere type. And I did type classification of circomference part on the basis of existence of circle line and shape - a face type and line type - of roof-end tile projection. So in case of convex Ilhwi-moon roof-end tiles I divided 5 types of convex large Ilhwi-moon roof-end tiles and 3 types of small convex Ilhwi-moon roof-end tiles. And I divided with 4 types of large concave Ilhwi-moon roof-end tiles and 3 types of small concave Ilhwi-moon roof-end tiles in concave Ilhwi-moon roof-end tiles. On the basis of type classification above-mentioned, I searched design changes of Ilhwi-moon roof-end tiles from Hwangryong temple site. First of all, in case of large convex lhwi-moon roof-end tiles, center part is story type and has circle line in circumference part(周緣剖) and I guess that convex roof-end tile whose projection is a face type is the most early style. And as time goes by, Only convex Ilhwi-moon remains without circle line, there is no circumference part circle line and I consider roof-end tile projection turns into a face type. Next, in case of large concave Ilhwi-moon roof-end tiles, I consider the style that center part is no-story type or story type and there is circle line in circumference part is the preceding style. and in case of concave roof-end tiles , I consider center part is story type and there is no circle line. The way I arrange a change tendency of Ilhwi-moon roof-end tiles is as follows. In case of Ilhwi-moon roof-end tiles, at first, there is circle line in center part and circumference part(周緣剖), but circle line is reduced or lost so I conclude roof-end tile face tend to be more simplified. Like this tendency of simplified shape of Ilhwi-moon roof-end tiles is caused by improvement of making skill. but the main reason is weakening of symbolic character in Ilhwi-moon roof-end tiles, such as lotus or sun. At last, tiles which are very similar to roof-end tiles excavated in Hwang ryong temple are discovered in Koyro palace and Hyeum-won, pa ju. Especially there ramains a record of repairing in hwangyong temple in 1105 and Hyeum-won, Pa Ju in 1120. Ilhwi-moon roof-end tiles ecavated in two temples are very similar so it is belong to that era. With this reason, I judged that Ilwhi-moon roof-end tiles are used at Hwangyong temple in early 12C for the first time. This kind of works such as type classification, design changes and recording chronologically has lots of limitation of too much generalization and shortage of materials. But I really hope that I can help you understand Koryo dynasty Hwangyong temple and Ilhwi-moon roof-end tiles.

실시간 소셜 네트워킹 처리를 위한 NoSQL과 NewSQL 성능 분석에 관한 연구

김종훈 단국대학교 정보·지식재산대학원 2016 국내석사

수년 전 시작된 모바일 기술의 발달로 소셜 네트워크 서비스가 활성화됨에 따라 실시간 대용량 데이터가 대폭 증가하는 계기가 되었다. 이러한 데이터를 처리하기 위해 새로운 형태의 저장기술인 NoSQL이 등장하였으나, 높은 수준의 데이터 정합성을 필요로 하는 분야에서는 적용할 수 없는 것이 문제로 대두되었다. 이러한 상황 속에서 RDBMS의 장점(트랜잭션 정합성 준수, SQL 지원)과 NoSQL의 장점(확장성, 분산처리)에 In-Memory 기반의 실시간 처리 능력이 더해진 새로운 저장기술인 NewSQL이 등장하였다. 이에 본 논문에서는 소셜 네트워크 데이터의 효과적인 실시간 처리와 분석의 용이성을 향상하기 위해 실시간 대용량 처리 아키텍처의 Back End 영역에 NewSQL을 적용하는 방안을 제시한다. 이러한 제시 안을 통해 도출된 성능 분석 지표를 기반으로 실시간 소셜 네트워크 데이터에 대한 NewSQL의 성능을 비교 분석한다. 최종적으로 소셜 네트워킹 데이터에 대한 서로 다른 데이터 저장기술인PostgreSQL(RDBMS), MongoDB(NoSQL), VoltDB(NewSQL)에 대한 응답속도와 한계점 성능을 분석하는데 목표가 있다. 분석 결과를 통해 실시간 대용량 처리 아키텍처 구성 시 데이터 저장기술 간에 상호보완적 설계가 요구되고, 데이터 저장기술에도 폴리글랏 개념이 필요한 것을 확인하였다. The development of mobile technology that has begun years ago had been the basis of the sharp increase of real-time mass data usage, with the activated network service. A new type of storage technology, namely, NoSQL, was introduced to deal with the increased data, but issues arose that it could not be applied in the areas where a high level of data consistency is required. Under such circumstances, the NewSQL was introduced, where it posed the advantages of both the RDBMS (compliance of transaction consistency and SQL support) and the NoSQL (expandability and distributed processing), in addition to the real-time processing capabilities of the In-Memory-based system. Thus, in this study, we suggest a method of applying the NewSQL in the Back End area to facilitate the efficiency of real-time processing and analysis of the social network data. Also, we conducted the comparative analysis of the real-time social network data, based on the performance analysis measures derived from the proposed idea. Finally, this study also aimed to analyze the response speed and the maximum performance of the PostgreSQL(RDBMS), MongoDB(NoSQL), and VoltDB(NewSQL), which are the three different data storage technologies of saving the social networking data. The analysis results suggest that complementary architecture is necessary when organizing the real-time mass data processing architecture, and the concept of polyglot is required regarding the data storage technology.

Isolation and Characterization of Marine Halophilic Oceanobacillus spp. from Kimchi

김종훈 국민대학교 일반대학원 2019 국내석사

김치는 우리나라의 전통 발효식품으로, 소금에 절인 배추나 무 따위를 고춧가루, 양파, 마늘, 젓갈 등 다양한 재료를 이용한 양념으로 버무려 만들어진다. 각종 야채와 젓갈을 비롯한 양념에서 유래하는 다양한 발효 미생물들은 김치의 맛 과 풍미를 결정한다. 이러한 김치의 재료는 개인의 기호와 지역적인 특성에 따라 매우 다양한 특징을 보이는데, 특히 우리가 선택한 석박지는 소금에 절인 무와 갈치젓, 전어젓, 황석어젓, 멸치젓의 4종 해산물을 혼합 젓갈을 주재료로 사용한 젓갈김치이다. 젓갈은 침채류, 장류와 더불어 한국의 3대 발효식품 중 하나로, 해산물을 발효시켰기 때문에 다양한 해양 호염성 균주의 보고라 할 수 있다. 기존의 연구에서는 김치의 유산균에 초점을 맞춘 것이 많았지만 우리는 젓갈에서 유래한 바실러스균, 특히 강력한 호염성 바실러스 균주를 주목하였다. 본 연구에서는 10% NaCl을 함유한 TSA배지에서 생장한 colony를 분리하였으며, 16S rRNA 염기서열 분석을 통하여 분리된 균주를 유전학적으로 동정한 결과 Oceanobacillus iheyensis KMU78 로 명명하였다. Oceanobacillus 속 균주는 최초 심해 퇴적물에서 발견된 것으로 알려져 있으나, 최근 일부 발효식품에서도 분리가 되고 있다. 우리는 해당 균주의 내염성 실험에서 0.5 ~ 20%의 NaCl 농도범위에서 성장을 확인하였고, 7%에서 최적의 성장을 보였다. Type strain과의 내염성 비교에서는 0.5-1%의 낮은 NaCl농도에서 O. iheyensis KMU78균주만 자라지 않는 것을 확인하였다. O. iheyensis KMU78 균주는 새로운 전형적인 호염균이며, O. iheyensisT는 내염균이었다. 두 균주 모두 동일한 species로 확인되었지만, 이와 같은 상충된 결과는 두 균주가 완전히 다르며, 구분해야 할 필요성을 보여준다. Kimchi is a Korean traditional fermented food made by pickling salted cabbage or radish in a sauce of red pepper powder, salted seafood (Jeotgal), green onion, garlic, and other ingredients. Various fermented microorganisms derived from various vegetables, Jeotgal and seasonings determine the taste and flavor of kimchi. The ingredients of Kimchi exhibit a wide variety of characteristics depending on the personal taste and local characteristics. Especially, Radish Kimchi(Seokbakji) is a Jeotgal kimchi which mainly uses salted radish and fermented seafood. Jeotgal is one of the three major fermented foods in Korea, along with the fermented pickling vegetable and the paste. It is one of the major sources of microorganisms in kimchi. In this study, a moderate halophile strain was isolated from radish kimchi containing a large amount of jeotgal. A colony that grown on TSA medium containing 10% NaCl were isolated. The isolated strain was genetically identified by 16S rRNA sequencing and named Oceanobacillus iheyensis KMU78. This strain does not grow differently from the O. iheyensisT when the NaCl concentration is low. The O. iheyensis KMU78 strain is a new typical halophilic bacterium, while O. iheyensisT is a halotolerant bacterium. Although both strains were identified with the same species, these conflicting results show that they are completely different.