RFID를 이용한 개선된 실내 위치 추적

주원이(Won-lee Joo),김효선(Hyo-Sun Kim),정영아(Yeong-Ah Jung),홍연찬(Yeon-Chan Hong) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.1

RFID는 무선 주파수를 이용하여 사물 또는 사람에 부착된 태그의 정보를 읽어내는 기술이다. 비접촉 방식으로 위치를 추적하는 RFID 시스템에서 태그를 이용하여 위치를 추적할 때 실제의 위치와 측정된 위치 간의 오차가 발생한다. 본 논문에서는 RFID 기술을 통한 사물 또는 사람의 위치를 파악하는 방법에 있어 3가지 방법을 제안한다. RFID기반의 위치 인식시스템을 구성하고 태그(tag)들을 정사각형 형태로 배치한다. 리더(reader)를 보유한 물체의 실제위치와 실험을 통해 예상되는 물체의 위치를 비교하여 오차를 확인한다. 기존 논문에서는 리더에 읽힌 모든 tag들의 무게중심 값을 구하여 리더의 대략적인 위치를 구하였다면 본 논문에서는 중점과 방사원의 형태를 이용하여 예상위치를 구하는 3가지 방법을 추가적으로 제시하는데 첫 번째는 중간 값을 사용한 방법, 두번째는 방사 형태를 사용한 방법, 세 번째는 원과 중간 값을 절충한 방법을 사용하였다. 데이터를 통해 본 논문에서 제안된 4가지 방법 중 어떤 방법이 거리의 오차가 적어 실제 위치를 추적하는 데에 효율적인지 확인하고자 한다. 그 결과 방사형태, 중앙 값, 그리고 방사형태와 중앙 값 두 가지를 모두 이용한 방법 중 중앙 값 만을 이용한 계산 방법이 가장 적은 오차가 발생하였다. RFID is a technology that uses radio frequency to read information in tags attached to objects or people. Because it reads the information without contact when tracking the location using tags in a RFID system, there can be errors between the actual position and measured position. In this paper, three methods (the method of radiation pattern, the method of the median value, and the method using both the radiation pattern and median value) are proposed to identify the location of objects or people using the RFID technique. The location identification system based on RFID was constructed and tags were arranged in a square pattern. The real location and experimentally predicted location of an object containing a reader were compared to confirm the error. Instead of the existing papers that obtained the approximately location of a reader by calculating the center of gravity of all tags read by that reader, in this study, the predicted location was obtained by the median value and the radiation pattern. This study validated which method was the most efficient among the three methods proposed in this paper through the data of the read tags. As a result, the method of the median value had the smallest error among those assessed.

Genotype of the Aldehyde Dehydrogenase 2 ( ALDH2 ) Gene in Korean : the G → A Transition in the Exon 12

주원아,김민영,이은예,박경숙 ( Won A Joo,Min Young Kim,Eun Yee Lee,Kyung Sook Park ) 한국유전학회 1995 Genes & Genomics Vol.17 No.2

Human aldehyde dehydrogenase (ALDH, E.C. 1. 2. 1. 3.) which oxidizes acetaldehyde to acteic acid during alcoholic metabolism, contains two major isozymes, the cytosolic ALDH1 and the mitochondrial ALDH2. The genotype of ALDH2 genes was typed in 311 normal Korean. For ALDH2 gene typing, genomic DNA was extracted from leukocyte and Exon 12 of ALDH2 gene was amplified by polymerase chain reaction. Amplified gene was hybridized with allele-specific oligonucleotide probe on nylon membrane and detected using colorimetric detection method. The frequencies of ALDH2 genotypes ALDH2*1|ALDH2*1, ALDH2*1|ALDH2*2 and ALDH2*2|ALDH2*2 were 60.8%, 34.1% and 5.1%, respectively. The estimated allele frequencies for ALDH2*1 and ALDH2*2 were 0.78 and 0.22, respectively. The allele frequencies of ALDH2 vary in different ethnic groups. The allele frequency of ALDH2*2 increased in Mongoloid; Korean was 0.22, Chinese was 0.24, and Japanese was 0.35, while the genotype of ALDH2*2|ALDH2*2 has not been observed yet in European populations.

Validation of Cell Bank through Proteomics Approach in Recombinant Escherichia coli Human Growth Hormone

Sung-Koo Lee(이성구),Won-A Joo(주원아),Chan-Wha Kim(김찬화) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.4

측두골에 발생한 미분화 육종

정영훈(Young Hoon Jung),김정민(Jeong-Min Kim),김래형(Rae-Hyung Kim),주원일(Won-Il Joo),장기홍(Ki-Hong Chang) 대한두개저학회 2015 대한두개저학회지 Vol.10 No.2

Malignant tumors of the temporal bone are very rare, and poorly differentiated sarcoma of temporal bone having not been reported yet. We report the case of a 69-year-old man with poorly differentiated sarcoma of the temporal bone whose symptoms were progressive hearing loss and otorrhea. The tumor was removed using craniotomy and subtotal petrosectomy by neurosurgeon and otologic surgeon consecutively. Diagnosis was established from histologic examination of surgical specimens. During follow-up, however, the tumor was recurred at left petrous apex region 2 years after operation. The patient was treated with radiation therapy with Cyberknife. No recurrence was observed on follow-up MRI imaging until three and half year after radiation therapy. The treatment options of this lesion are discussed with review of literature.

PSS/E 기반 전력계통 안정성 평가 자동화 프로그램 개발

주원(Won Joo),이창근(Chang-Gun Lee),주준영(Joon-Young Joo) 대한전기학회 2017 대한전기학회 학술대회 논문집 Vol.2017 No.11

계통운영 효율성 향상을 위한 풍력발전단지 주변압기 탭 정정에 관한 연구

주원(Won Joo),이창근(Chang-Gun Lee),주준영(Joon-Young Joo) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.4

원예특작분야 품종육성 연구개발의 비용편익 및 파급효과 분석

주원 ( Won Ju ),박정관 ( Jeong Gwan Park ),이주량 ( Joo Ryang Lee ) 한국생산성학회 2013 生産性論集 Vol.27 No.3

horticulture, breeding R&D, cost-benefit and spillover

R&D와 규모의 영세성이 산업별 총요소생산성에 미치는 영향

김정환,이동기,이부형,주원,Kim, Jung-Hwan,Lee, Dong-Ki,Lee, Bu-Hyung,Joo, Won 한국벤처창업학회 2007 벤처창업연구 Vol.2 No.4

There were many comprehensive analyses conducted within the existing research activities wherein factors affecting technology progress including investment in R&D vis-${\Box}$-vis their influences act as the determinants of TFP. Note, however, that there were few comprehensive analysis in the industrial research performed regarding the impact of the economy of scale as it affects TFP; most of these research studies dealt with the analysis of the non -parametric Malmquist productivity index or used the stochastic frontier production function models. No comprehensive analysis on the impacts of individual independent variables affecting TFP was performed. Therefore, this study obtained the TFP increase rate of each industry by analyzing the factors of the existing growth accounting equation and comprehensively analyzed the TFP determinants by constructing a comprehensive analysis model considering the investment in R&D and economy of scale (smallness by industry) as the influencers of TFP by industry. First, for the TFP increase rate of the 15 industries as a whole, the annual average increase rate for 1993${\sim}$ 1997 was approximately 3.8% only; during 1999${\sim}$ 2000 following the foreign exchange crisis, however, the annual increase rate rose to approximately 7.8%. By industry, the annual average increase rate of TFP between 1993 and 2000 stood at 11.6%, the highest in the electrical and electronic equipment manufacturing business and IT manufacturing sector. In contrast, a -0.4% increase rate was recorded in the furniture and other product manufacturing sectors. In the case of the service industry, the TFP increase rate was 7.3% in the transportation, warehousing, and communication sectors. This is much higher than the 2.9% posted in the electricity, water, and gas sectors and -3.7% recorded in the wholesale, food, and hotel businesses. The results of the comprehensive analysis conducted on the determinants of TFP showed that the correlations between R&D and TFP in general were positive (+) correlations whose significance has yet to be validated; in the model where the self-employed and unpaid family workers were used as proxy variables indicating the smallness of industry out of the total number of workers, however, significant negative (-) correlations were noted. On the other hand, the estimation factors of variables surrogating the smallness of scale in each industry showed that a consistently high "smallness of scale" in an industry means a decrease in the increase rate of TFP in the same industry.

겨울철대비 전력수요 감소에 따른 경인지역 고장파급방지장치 운영 개선에 대한 연구

주준영(Joon-Young Joo),김상민(Sang-min Kim),주원(Won Joo) 대한전기학회 2014 대한전기학회 학술대회 논문집 Vol.2014 No.7

교역을 통한 국가 간 부가가치 유출입

신관호 ( Kwanho Shin ),주원 ( Won Joo ) 한국국제경제학회 2016 국제경제연구 Vol.22 No.3

아시아 국가들 사이에서는 최근 글로벌 가치사슬의 확장으로 인해 수직적 분업이 강화되고 있으며 이를 통해 한 나라에서의 생산은 무역상대국의 부가가치 생산에도 큰 영향을 주고 있다. 본 연구는 1990~2005년의 기간에 대하여 5년 단위로 발표하는 아시아국제산업연관표를 이용하여 교역으로 인해 부가가치가 어떻게 이동하는지 확인하였다. 즉 자국 제품에 대한 전 세계수요 한 단위가 증가할 때, 이를 자국 내에서 창출된 부가가치 부분을 의미하는 부가가치 유발계수와 수입국으로 유출되는 부가가치의 크기를 나타내는 수입유발계수로 분해하여 중간재수입을 통해 유출되는 부가가치의 비중이 어떤 경제적 요인에 의해 결정되는지 분석하였다. 그 결과 교역상대국으로 유출되는 부가가치 비중을 나타내는 수입유발계수의 크기는 부가가치 유출국가의 1인당 실질GDP와 정(+)의 관계에 있지만 1인당 실질GDP가 약 $14,000을 넘어서면 부(-)의 관계로 변한다. 또한 유출되는 국가의 경제성장률(1인당 실질GDP 증가율)도 교역 상대국에 대한 수입유발계수에 정(+)의 영향을 미치는 것으로 분석되었다. 다음으로 부가가치 유출국가의 총중간재수입에서 부가가치 유입국가로부터 수입되는 중간재가 차지하는 비중도 수입유발계수에 영향을 미치는 것으로 나타났다. 마지막으로 부가가치 유출국가의 교육업 및 연구업이 경제 전체에서 차지하는 비중이 높을수록 그리고 부가가치 유입국가의 그 비중이 낮을수록 교역상대국에 대한 수입유발계수 값은 작아진다는 결과를 얻었다. 이는 양자 간 교역에서 인적자본 수준과 기술경쟁력 격차라는 무형의 요인이 부가가치의 유출에 영향을 미칠 수 있다는 점을 시사해 준다. This paper investigates cross-border movements of value added in East Asia, where production relationship has become more important due to vertical specialization, using Asian International Input-Output Table during 1990~2005. The main result is that the value added inducement coefficients move to trade partners is positive relationship with real GDP per capita of outward flow country, however the sign of coefficients becomes negative when real GDP per capita passes over a certain threshold. And the real GDP growth per capita of outward flow country is positive relationship with the movements of value added inducement coefficients between two countries. Moreover the share of intermediate goods imports from value added inward flow country in total intermediate goods imports of value added outward flow country has significant effects on the movements of value added inducement coefficients. Lastly, the share of education·research sector value added in total value added of outward flow country is higher and that of inward flow country is lower, the value added inducement coefficients is significantly smaller. That implies that the movements of value added can be affected by a level of human capital and a gap of technology competitiveness between two cross-border traded countries.