LTE 시스템에서 초기 셀 탐색을 위한 부분 상관값 기반 PSS 검출 방식에 관한 고찰

주정석(Jung Suk Joo) 대한전자공학회 2014 전자공학회논문지 Vol.51 No.9

LTE 시스템의 하향링크 동기 신호는 PSS (primary synchronization signal)과 SSS (secondary synchronization signal)로 나눠져 있으며, 미리 정해져 있는 3 개의 신호 중 하나가 전송되는 PSS 신호를 먼저 찾은 다음 SSS 신호를 검출하게 된다. 본 논문에서는 부분 상관값 계산 구간의 길이가 다른 검출기들을 동시에 사용하는 PSS 검출 방식을 제안한다. 우선 구간별부분 상관값을 다시 활용함으로써 여러 개의 검출기를 동시에 사용함에 따른 계산량의 증가를 최소화한다. 또한, 동시에 사용된 검출기들의 결과 값 중에서 가장 믿을 만한 하나의 값을 선택하기 위하여 임시 주파수 오차 값(tentative frequency offset)을 이용한 동기식 최종 추정치 선택 방법을 제안한다. 컴퓨터 모의실험을 통하여, 제안된 방식이 넓은 주파수 오차 범위에서 안정적인 PSS 검출 성능을 보임을 검증하고자 한다. The synchronization signal in Long Term Evolution (LTE) systems contains the primary synchronization signal (PSS) and the secondary synchronization signal (SSS), and the overall synchronization performance is dominated by PSS detection. In this paper, we propose a PSS detection scheme employing three partial correlation based PSS detectors with different partial correlation lengths, in which calculated partial correlation values are reused in order to reduce computational complexity. A coherent selection scheme using tentative frequency offsets is also proposed to select one reliable result from outputs of partial correlation based PSS detectors. It is shown through computer simulation that the proposed scheme can have a robust detection performance in wide range of frequency offsets.

공랭식 응축기 관내 응축수 동결 방지에 관한 연구

주정아(Jeong-A Joo),황인환(In-Hwan Hwang),조영일(Young-Il Cho),이동환(Dong-Hwan Lee) 대한기계학회 2012 大韓機械學會論文集B Vol.36 No.8

공랭식 응축기는 대기중의 공기를 이용해 스팀을 응축수로 전환시키는 발전용 냉각설비이다. 추운 겨울철, 공랭식 응축기는 열교환부 관내의 응축수가 동결되어 튜브 자체가 터지는 심각한 동파 문제를 수반한다. 이는 기존 공랭식 응축기 시스템이 가지는 튜브 출구의 구조적 문제로 인한 응축되지 않은 스팀 및 비응축성 기체의 역류가 주요 원인이 된다. 따라서 본 연구에서는 유사 모의 공랭식 응축기시스템을 설계 및 제작하여 기존의 공랭식 응축기 시스템이 가지고 있는 문제점을 구현하고, 이를 해결하기 위한 설계가 가능함을 실험적으로 증명하였다. 기존 공랭식 응축기 시스템의 작동 원리와 유사한 조건에서 실시한 실험에서 역류에 의한 튜브 동결을 관찰할 수 있었다. 반면 신개념 공랭식 응축기 시스템을 적용한 실험에서는 역류 및 동결 발생없이 열교환이 잘 이루어짐을 확인할 수 있었다. An air-cooled condenser is a device that is used for converting steam into condensate by using ambient air. The air-cooled condenser is prone to suffer from a serious explosion when the condensate inside the tubes of a heat exchanger is frozen; in particular, tubes can break during winter. This is primarily due to the structural problem of the tube outlet of an existing conventional air-cooled condenser system, which causes the backflow of residual steam and noncondensable gases. To solve the backflow problem in such condensers, such a system was simulated and a new system was designed and evaluated in this study. The experimental results using the simulated condenser showed the occurrence of freezing because of the backflow inside the tube. On the other hand, no backflow and freezing occurred in the advanced new condenser, and efficient heat exchange occurred.

성견에 있어서의 정중구개봉합선의 급속확장에 의한 상악골 주위 봉합의 조직학적 변화에 관한 연구

周貞信(Jung-Sin Joo),劉永奎(Young-Kyu Ryu) 대한치과교정학회 1981 대한치과교정학회지 Vol.11 No.2

This study was undertaken to observe the histologic changes of surrounding maxillary sutures to the widening of midpalatal suture, using two adult dogs, weighing about 10 kg, for experimental, and one for control group. After widening of the midpalatal suture with expansion screw for ten days was performed, and followed by sacrifice of experimental animals. Tissues were excised from 5 surrounding maxillary suture portions such as, internasal, interfrontal, midsagittal, zygomatrco-temporal, and midpalatal sutures. After that, the specimens were fixed and d calcified in 10% formalin sol. and 5% nitric acid. Embedding in paraffin end, serial sections at a thickness of 5 micron was done, After Hema toxylin Eosin staining and light microscopic examination, Following results were obtained 1. in midpalatal suture area, which showed most prominent histologic change, High degree of fibronlastic and osteoblastic proliferation lining the bony trabeculae with osteoid tissue projection into the fibrous connective tissue were observed. 2. In interfrontal suture area, moderate degree of fibroblastic and osteoblastic proliferation was observed. 3. In internasal suture area, active osteoblastic and osteoclastic proliferation lining the bony trabeculae was observed, and separation of fibrous connective tissue was also observed. 4. In midsagittal and zygomatico-temporal suture areas, no histologic changes can be observed.

동아시아의 미래

주정화(Jeong Hwa Joo) 동북아시아문화학회 2015 동북아시아문화학회 국제학술대회 발표자료집 Vol.2015 No.11

This year is the 70th anniversary of the Korean independence and also 70 years from the year when the Korean Peninsular divided into two nations, which makes even more meaning to predict the future of East Asia based on the scenario of the unified Korean Peninsular. The U.S., China, Japan and Russia have completed their power shift by 2012. In ROK, the president Park Geun-Hye, the first woman president of Korea, won the presidency on December 19, 2011. In DPRK, Kim Jong-Un became the supreme leader after the former leader, his father’s death, and on April 13, 2012, Kim Jong-Un established Kim Il Sung-Kim Jong Ilism and declared DPRK being one of Nuclear Club. In U.S., Obama"s administration is working on holding China in check and the “Pivot to Asia” policy to put TPP(Trans-Pacific Partnership) under his leadership. China, with Xi Jinping as its new leader, is opening the era of “China Dream” and “The Way to Powerful Culture. Japan calls for "Strong Japan" to regain its status as the number-two economy in the world as it had been for 42 years in the past. Meanwhile Japan became "a nation that can wage war with U.S. on its side" and continues conservative movements. Russia wants to politically integrate with Ukraine and develop the Far East Asia to make up for damages it suffers from excessive export of natural gas, political corruption and decreasing population. In the year 2040, it is estimated that China, India and Japan compose 83% of Asia"s GDP and 35% of the world"s GDP, and China becomes the number one economic power in the world. China and the United States as G2 will lead the biggest consuming market and infrastructure investment market that the world"s ever had. The future for Asia is “One Asia.” Therefore, “One Korea” where the north and the south becomes a unified nation must come true.

기병 돌격 전술의 쇠퇴와 기병 개혁의 실패

주정율(Joo Jung-Youl) 한국서양사연구회 2014 서양사연구 Vol.0 No.51

중금속 내성이 있는 Desulfovibrio desulfuricans를 이용한 해양 환경에서의 Cu(II), Zn(II) 제거

주정옥(Jeong ock Joo),김인화(In Hwa Kim),오병근(Byung-Keun Oh) 한국생물공학회 2014 KSBB Journal Vol.29 No.3

Microorganisms play a significant role in bioremediation of heavy metal contaminated seawater. In this study, we reported an effective removal of Cu and Zn in marine envionment by using Desulfovibrio desulfuricans (D. desulfuricans) which belong to sulfate reducing bacteria. D. desulfuricans showed stable growth characteristics in high salt concentration and had resistance to heavy metals. Cu and Zn was removed not only by physical adsorption on the surface of bacteria but also by precipitation reaction of microbial metabolism by D. desulfuricans in seawater. In case of different heavy metal concentration, Cu was effectively removed 85% at 25 ppm and 60% at 50 ppm and Zn was effectively removed 54% at 50 ppm and 46% at 200 ppm, respectively.

어머니의 양육신념과 태도가 유아의 다중지능발달에 미치는 영향

주정호(Joo Jung ho) 한국복지실천학회 2015 한국복지실천학회지 Vol.6 No.2

본 연구는 유아기 자녀를 둔 어머니의 자녀양육에 대한 인지적 특성인 신념에 대한 전반적인 경향을 조사하고, 양육에 대하여 보편적으로 나타나는 태도와의 관계는 어떠한지, 이들 변인들이 유아의 다중지능발달에 어떻게 영향을 미치는지를 실증적으로 규명하는데 그 목적을 두고 있다. 본 연구의 목적을 달성하기 위하여 서울시에 거주하고 있는 유아와 어머니 400명을 대상으로 설문지 방식에 의하여 양육신념, 양육태도, 다중지능발달에 대한 내용을 조사하였다. 분석기법으로 빈도분석, 독립표본 t-test, 일원변량분석, 신뢰도분석, 상관관계분석, 다중회귀분석을 이용하여 인구통계학적 특성에 따른 양육신념, 양육태도, 다중지능의 차이를 살펴보았고, 양육신념과 양육태도, 다중지능발달과의 관계 및 양육신념과 양육태도가 다중지능에 미치는 영향에 대해 살펴보았다. 본 연구에서 나타난 주요 결과로는 인구통계학적 특성에 따른 양육신념, 양육태도, 다중지능의 차이가 유의하게 나타났으며, 양육신념과 양육태도의 하위영역에 따라 부분적으로 다중지능발달에 영향을 미치는 것을 나타났다. 또한 양육신념에서 성숙주의 신념을 강조할수록 애정적 태도와 자율적 태도를 보이는 성향이 두드러진 반면 환경주의 신념을 강조할수록 거부적 태도와 통제적 태도를 보이는 성향이 두드러지는 것을 알 수 있었다. 이와 같은 결과를 통해서 양육신념과 태도에 따라 유아의 다중지능발달에 다양하게 영향을 미친다는 것을 실증적으로 파악할 수 있었다. 이에 유아의 능력과 소질을 개발할 수 있는 영역별 다중지능발달을 위한 심도 있는 후속연구와, 올바른 부모의 양육신념과 태도를 위한 다양한 교육모형과 프로그램개발이 더욱 더 필요하다. (Professor, Dept. of social welfare, Konkuk Continuing Education Center) The study investigated overall tendency of maternal parental beliefs of mother's with young children to find the relations between child rearing attitude and to reveal how those variables effect on preschoolers' multiple intelligence development. For the study, 400 preschoolers and mothers living in Seoul city were surveyed on maternal parental beliefs, child rearing attitude and multiple intelligence development. Percentage, average, deviation were used to figure out overall difference on variables and demographic factors of interviewers. Frequency method, independent sample ttest, one-way ANOVA, corelation analysis, multiple regression analysis were used as for analysis methods. As the result of this study, conclusions were as follows. The difference among maternal parental beliefs, child rearing attitude and multiple intelligence according to demographic factors showed meaningful difference. As for those results of the study, a mother of preschoolers, the more maternal parental attitude of environmentalism she has, the preschooler's overall multiple intelligence should be developed. Considered by surrounding environment or learning, in other words, experience and training can lead the level of development. The result means a mother's active role for child's development takes a positive influence on multiple intelligence development. In addition, a mother's maternal parental beliefs has meaningful relevance to multiple intelligence development. Therefore, follow up studies on areal multiple intelligence should be conducted to develop preschooler's ability and talent. Also, various educational models and programs for raising upright parental beliefs and attitude should be needed.

朝鮮通信使를 통해서 본 韓日關係未來像

朱正和(Joo, Jeong Hwa),朱恩惠(Joo, Eun Hye) 동북아시아문화학회 2015 동북아시아문화학회 국제학술대회 발표자료집 Vol.2015 No.8

The history of Joseon Tongsinsia that lasted over 200 years from 1607 to 1811 was a distinguishing monument of friendly Korea(Joseon)-Japan relationship. The delegation of Joseon Tongsinga departed from Hanyang, Joseon’s capital; on their way had they passed Yangjae, Pangyo, Yongin, Juksan, Chungju, Mungyeong, Yecheon, Euiseong, Yeongchueon, Gyeongju, Ulsan, Dongnae, Busan, and the delegation arrived at Japan on the route passing Iki, Ainoshima, Jishima, Shimonoseki and Setonaigai. The delegation continued to Nagashima, Kamasoseki, Kamagiri, Hibi, Ushimado, and finally stopped at Osaka where they stayed at the temple, Nishihonganji. After spending a night, six Joseon ships and a few security troops remained at Osaka, and the delegation left for Kyoto. Japan Daimyos offered a ship for the delegation to go to Yodoura, and they walked to Kyoto from there. This was the route that Joseon Tongsinga delegation used during the early period of Joseon; Later, Edo was included in the route except the year 1617. When the delegation traveled to Kyoto, it was when Shogun, a powerful military leader, ruled Kyoto. There is an old saying that we must study the past if we would define the future and the present. The present is a result of what happened in the past, and the past is the foundation of what the present is made of. On this aspect, we can say that history is a way of putting effort to understand what we are now, and it is also a great process of life of human beings from the past to the present. It is impossible to predict the future of the relationship between Korea and Japan without looking at the current political issues between the two. Therefore this research will also include the political, economic, cultural perspectives.

청소년 문화, 부적응, 자살에 대한 기독교 교육적 대안

주정관(Joo Chung Gwan) 개혁신학회 2014 개혁논총 Vol.31 No.-

"청년이 무엇으로 그의 행실을 깨끗하게 하리이까 주의 말씀만 지킬 따름이니이다."64 위의 말씀은 청년(청소년)을 위한 성경에서의 대표적인 구절임에도 불구하고 사실 성경에는 청소년에 관한 말씀들이 그리 많은 편은 아니다. 그러나 성경 전체에서 흐르는 청소년에 대한 관심과 사랑을 우리가 주목하고 그 의미를 깊이 묵상해야 할 줄로 안다. 본 연구의 동기는 여기에서 시작이 되어 진다. 오늘의 청소년들, 특별히 교회 소속의 기독교 청소년을 위한 연구는 그들의 문화를 이해하고 그들이 왜 교회나 혹은 학교에 적응하지 못하고 방황하고 있는지 그리고 왜 극단적인 길을 선택하는지 부모나 교사인 우리"어른"들은 책임의식을 가지고 고민하고 이와 같은 문제 해결을 위한 방안을 제시해야 한다. 기독 청소년은 인본주의적이고 세속적인 문화가 아닌 기독교 세계관에 기초한 기독교 문화의 영향을 받아야 하며, 교회에 대한 부적응 청소년들이 '교회적응'을 위한 내적인 요인, 즉'하나님의 부르심에 대한 응답''오직 믿음''말씀 중심의 삶'등의 삶을 살게 하는 것이며 이를 구체화 하는 교회 공동체 교육의 중요성을 강조해야한다. 청소년 부적응으로 나타나는 극단적인 선택인 자살의 요인들은 사회적 요인, 가정 환경적 요인, 개인 성격적 요인, 및 정신건강요인 혹은 생물학적 요인, 유전적 요인, 정신적 장애 요인, 개인적 요인, 가정적 요인, 사회ㆍ환경적 요인 등이 있으며, 자살방지를 위한 예방 교육으로서의 동기부여 등이 필요하다. "How can a young man keep his way pure? By living according to your word." Even though this is a typical passage of the Bible for young people (youth), the Bible does not say much specifically about youth. However, we need to pay attention to God's concern and love for youth through out the Bible. The motivation for this research comes from God's concern and love for youth. Research for today's youth, particularly for Christian youth is needed to show us the key characteristics of a constantly evolving youth culture and the specific reasons why they are wandering off course and choosing extreme behaviors instead of being adapted well to churches and or schools. Parents and teachers, so-called adults, need to look for a solution for these problems with more concerted awareness of our responsibility for our youth. Christian youths need to be influenced by Christian culture based on a Christian world-view instead of a secular humanistic world-view. Maladjusted young people need to be empowered to live by a deep inner motivation that comes from genuine faith outlined by three important directives, 'the response for God's calling,' 'the faith of God,' 'the Word-centered life,' that results in real integration to church. The importance of the education of the whole church community also needs to be emphasized in this process. Factors that need to be considered in suicide from adolescent maladjustment are social factors, factor of the atmosphere of home, personal factors, mental problem, biological factors, genetic factors, mental disability factors, personality, and so on as the development of motivation from prevention education is necessary for suicide prevention.

Per-Survivor Processing MLSE와 Tentative Decision MLSE를 결합한 새로운 적응 MLSE 수신기

주정석(Jung Suk Joo),이용훈(Yong Hoon Lee) 한국통신학회 1999 한국통신학회 학술대회 및 강연회 Vol.1999 No.4