Treatment of Radioactive Liquid Waste by the Forced-AirCirculation System

Tae-κuk Kim,IL Sik Kang,Jong-Sik Shon,Young-Gerl Ryu,Won-Hyuk Jang,Sang-Min Bae,Young-Yong Ji,Dae-Seok Hong,Kyung-Kil Kwak 한국방사성폐기물학회 2011 한국방사성폐기물학회 학술논문요약집 Vol.9 No.2

동북아 피더네트워크의 Win-win전략에 관한 연구

장우준(Woo-jun jang),전찬용(Chan-Yong jeon),김태원(Tae-Won Kim),곽규석(Kyu-Seok Kwak),남기찬(Ki-Chan Nam) 한국항해항만학회 2006 한국항해항만학회 학술대회논문집 Vol.3 No.1

최근 중국은 양산항을 개장하여 선사 유치를 위한 다양한 혜택을 제공하고, 일본은 "수퍼중추항만 육성계획“을 세워 항만의 효율성을 바탕으로 비용을 낮추려는 노력을 하고 있다. 또한 선박의 대형화에 의한 중심항만(Hub Port) 위주의 기항과 북중국의 대량 물량 발생지역에 대한 직기항 경향으로 동북아 항만간의 경쟁이 더욱더 치열해 지고 있으며 동북아 역내 피더네트워크 강화의 필요성이 제기되고 있다. 따라서, 본 연구에서는 유럽 피더네트워크 전략 사례를 바탕으로 동북아 피더시장 현황을 파악하고 동북아 피더네트워크 구조를 분석함으로써 동북아 역내 항만 및 선사간의 과당경쟁을 지양하고 서로 Win-Win할 수 있는 터미널의 전략적 활용, 선사간 제휴 확대, 항만간 협력 강화를 위한 구체적인 전략을 제시하였다. Recently, China opened Yangshan port and provides a variety of benefits for shipping companies. Japan plans to reduce logistics costs and improve efficiency through the established "super major ports" project. According to the "hub and spokes" system, the number of direct calls toward North-Chinese ports are increasing. This changing environment has negative effects on the amount of transshipment cargos in Korean ports. In order to make a hub port of a domestic port, it is necessary to develop northeast Asian feeder networks. Therefore, this paper analyzes the structure of northeast Asian feeder networks through the case study of European feeder networks strategy. Finally, we suggests the plans to reinforce feeder networks, which are strategic terminal operation, strategic alliances between shipping companies and port co-operation, for win-win strategy in the competitive northeast Asian market.

MLAT 지상 위치정확도 시험에 대한 성능 분석

구본수,장재원,김우리얼,김태식,Koo, Bon-soo,Jang, Jae-won,Kim, Woo-riul,Kim, Tae-sik 한국항행학회 2017 韓國航行學會論文誌 Vol.21 No.4

GPS 안전성에 대한 문제가 제기 되면서 ADS-B 대안 기술로 다변측정감시(MLAT; multilatration)시스템이 각광 받고 있다. MLAT는 항공기에 탑재된 트랜스폰더에서 송출되는 Mode A,C,S는 물론 1090ES(ADS-B) 신호를 지상의 여러 개의 수신기로 수신하여 항공기를 탐지하고 위치를 계산하며, GPS를 이용하는 ADS-B 수준의 위치 정밀도를 갖고 있으면서도 ADS-B와 달리 독립적으로 표적 위치를 계산 할 수 있다. 전 세계적인 환경변화에 따라 우리나라에서도 공항지역 이동차량 및 항공기 감시용으로 지역다변측정(LAM; local area multilateration)감시 시스템 개발 하고 있다. LAM시스템에 대한 지상 필드 시험을 태안 비행장에서 진행하고 있다. 본 논문에서는 태안 비행장에서 필드 시험 중인 MLAT의 위치 정확도를 확인하기 위하여, 지상에서 고정된 타겟과 움직이는 타겟에 대하여 MLAT 트렌스폰더와 RTK Rover를 설치하여 MLAT의 위치 정보와 RTK의 위치정보를 확인하여, RTK에서 보정된 위치 정보와 MLAT에서 계산되어진 위치정보를 비교하여 성능을 분석 하였다. As a GPS stability problem arises, MLAT system is spotlighted as an alternative technology of ADS-B. MLAT system has a high position accuracy as much as ADS-B. Also, MLAT receives the mode A,C,S, and 1090ES(ADS-B) signals from the mounted aircraft transponder. MLAT receives signals from several receiver units and calculates aircraft positions. MLAT has ADS-B level positioning accurarcy using GPS and can calculate the position information with objects independently. According to global environment changes, Local area multiltilateration(LAM) surveillance system is under development for moving vehicles and aircraft detection in airport. These are still under testing in Tae-an Airfield. In the paper, we analyzed the performance by comparing the calculated position data from MLAT to RTK. In order to confirm the position accuracy of MLAT and the deviation of position data between fixed target and moving target on the ground during the field test in Tae-an Airfield.

Sex Identification of Jackass Penguins(Spheniscus demersus) using the CHD Gene

Tae-Sue Kim,Mi Jang,Hyun-Sung Kang,Chul-Won Song,Kang-Seok Seo 경상대학교 농업생명과학연구원 2014 농업생명과학연구 Vol.48 No.6

In many avian species, it is difficult to distinguish the sexes based on their external features. Sex determination is an important area of study in developmental and evolutionary biology, as well as in ecology. In penguins, physical sexual characteristics between males and females are hard to differentiate particularly the Jackass penguins (Spheniscus demersus) which show little sexual dimorphism. Although it is always thought that males are usually larger than females, sexing by direct observation may be difficult especially in young birds. In this research, we evaluated a sex determination technique in Jackass Penguins using genomic deoxyribonucleic acid (DNA) amplification using primers. Genomic DNA was extracted from feathers of Jackass penguins, Chickens (Gallus gallus domesticus) and Ducks (Anas Platyrhynchos var. domestica) using E prep (Viagenkorea.CO, Korea) reagent. A primer set is designed for sex determination. The primers amplifythe homologous region of the CHD-W gene (chromo-helicase-DNA-binding gene) unique to females, and the CHD-Z gene, occurring in both sexes and characterized by two bands in females and only one band in males. The results showed that analyses of the polymerase chain reaction products in Jackass penguins using 2550F-2718R and P2/P8 primer sets showed one band in both males and females. Moreover, 2550F-2718R primer set identified the sex of chickens but not in ducks while primer P2/P8 showed only one band in both chickens and ducks. The 1272L-1237H primer showed one band in male and two bands in female in all species tested. It was confirmed that the use of 1272L-1237H primer concur in identifying the sex of the following species: Jackass penguins, ducks and chickens.

Identification of polymorphisms in the Caspase-3 gene and their association with lung cancer risk

Jang, Jin Sung,Kim, Kyung Mee,Choi, Jin Eun,Cha, Sung Ick,Kim, Chang Ho,Lee, Won Kee,Kam, Sin,Jung, Tae Hoon,Park, Jae Yong Wiley Subscription Services, Inc., A Wiley Company 2008 Molecular carcinogenesis Vol.47 No.5

<P>Caspase-3 (CASP-3) is a primary effector CASP that executes programmed cell death, and it plays an important role in the development and progression of cancer. Polymorphisms in the CASP-3 gene may influence CASP-3 production and/or activity, thereby modulating the susceptibility to lung cancer. To test this hypothesis, we first screened for polymorphisms in the CASP-3 gene by direct sequencing of genomic DNA samples from 27 healthy Koreans, and then evaluated their associations with lung cancer in a case–control study that consisted of 582 lung cancer patients and 582 healthy controls. Individuals with at least one variant allele of the −928A > G, 77G > A, and 17532A > C polymorphisms were at a significantly decreased risk for lung cancer in comparison to the carriers with each homozygous wild-type allele [adjusted odds ratio (OR) = 0.79, 95% confidence interval (CI) = 0.62–1.00, P = 0.05; adjusted OR = 0.78, 95% CI = 0.61–0.99, P = 0.04; and adjusted OR = 0.74, 95% CI = 0.58–0.95, P = 0.02, respectively]. Consistent with the results of genotyping analysis, the GAGC haplotype carrying the variant allele at all of the −928A > G, 77G > A, and 17532A > C loci was associated with a significantly decreased risk of lung cancer compared to the AGGA haplotype carrying no variant alleles at the three loci (adjusted OR = 0.66, 95% CI = 0.51–0.86, P = 0.002 and Bonferroni corrected P = 0.008). These results suggest that the CASP-3 polymorphisms and their haplotypes contribute to the genetic susceptibility to lung cancer. © 2007 Wiley-Liss, Inc.</P>

Ideal nose shapes in Koreans: achievable aesthetics

Tae-Hoon Lee,Jae Won Jang,Soon Joon Kim,Sang-Hyok Suk,Jung Gwon Nam 대한미용의학회 2023 대한미용의학회지 Vol.7 No.2

Background: Effective preoperative planning, which is essential to rhinoplasty success, requires a deep understanding of nasal aesthetics and open communication between surgeons and patients. Ideal values are often identified by subjective surveys and questionnaires and may differ from patient-surgeon discussions. Objective: This study employed three-dimensional computer-simulated images to investigate the real-world ideal aesthetic values of the nose compared with established ideals. Methods: Image data collected from January 2020 to October 2023 included 199 computer-simulated rhinoplasty patients with an average age of 32.3 years (114 male, 85 female). Results: Simulated nasofrontal angles averaged 145.75 degrees for male and 148.80 degrees for female, whereas nasolabial angles averaged 101.53 degrees for male and 102.92 degrees for female. Nasofacial angles averaged 29.56 degrees for male and 29.78 degrees for female, while nasomental angles averaged 131.66 degrees for male and 132.22 degrees for female. Simulated nasal lengths averaged 4.58 cm for male and 4.01 cm for female, while nasal heights averaged 2.61 cm for male and 2.27 cm for female. The mean tip projection ratio was 0.57 for both male and female. Conclusion: The ideal nasofrontal angle for Koreans was greater than previously thought and potentially influenced by a preference for a natural-looking nose profile and less pronounced glabella. The nasolabial angle and tip projection ratio exhibited the most and least variation, respectively. Notable sex-based differences in nasofrontal angle, nasal length, and nasal height were observed, whereas other measurements remained consistent. The nasolabial angle disparities between male and female were smaller than the widely accepted 5-degree difference, indicating a higher degree of sex similarity in nasal aesthetic preferences among Koreans.

The Mortality According to Hepatic Venous Pressure Gradient in Korean Patients with Portal Hypertension

Tae Yeob Kim,Ki Tae Suk,Jae Young Jang,Moon Young Kim,Soung Won Jeong,Eui Ju Park,Dong Joon Kim,Joo Hyun Sohn,Soon Koo Baik,Woo Kyoung Jeong,EunHee Choi 한국간담췌외과학회 2014 한국간담췌외과학회 학술대회지 Vol.2014 No.4

Differential effects of completed and incomplete pregnancies on the risk of Alzheimer disease

Jang, Hyesue,Bae, Jong Bin,Dardiotis, Efthimios,Scarmeas, Nikolaos,Sachdev, Perminder S.,Lipnicki, Darren M.,Han, Ji Won,Kim, Tae Hui,Kwak, Kyung Phil,Kim, Bong Jo,Kim, Shin Gyeom,Kim, Jeong Lan,Moon, Ovid Technologies (Wolters Kluwer) - American Acad 2018 Neurology Vol.91 No.7

<B>Objective</B><P>To investigate the effects of completed pregnancy with childbirth and incomplete pregnancy without childbirth on the late-life cognition and the risk of Alzheimer disease (AD) in women.</P><B>Methods</B><P>Using the pooled data of 3,549 women provided by 2 population-based cohort studies, we conducted logistic regression analyses to examine retrospectively the associations of completed and incomplete pregnancy with the risks of mild cognitive impairment and AD. For women without dementia, we also conducted analyses of covariance to examine the associations of completed and incomplete pregnancy with Mini-Mental State Examination (MMSE) score.</P><B>Results</B><P>Grand multiparous women who experienced ≥5 completed pregnancies showed an ≈1.7-fold higher risk of AD than those who experienced 1 to 4 completed pregnancies (odds ratio [OR] 1.68, 95% confidence interval [CI] 1.04-2.72), while those who had incomplete pregnancies showed half the level of AD risk compared with those who never experienced an incomplete pregnancy (OR 0.43, 95% CI 0.24-0.76 for 1 incomplete pregnancy; OR 0.56, 95% CI 0.34-0.92 for ≥2 incomplete pregnancies). In women without dementia, the grand multiparous had worse MMSE scores than those with 1 to 4 completed pregnancies (<I>p</I> @@<@@ 0.001), while those who experienced ≥1 incomplete pregnancies had better MMSE scores than those who never experienced an incomplete pregnancy (<I>p</I> = 0.008).</P><B>Conclusions</B><P>Grand multiparity was associated with high risk of AD, while incomplete pregnancy was associated with low risk of AD in late life.</P>

Intelligent Color Control for Display Panel

Jang Gun Jo(조장군),Jong Won Kim(김종원),Jae Yong Seo(서재용),Hyun Chan Cho(조현찬),Tae Hoon Cho(조태훈) 한국지능시스템학회 2006 한국지능시스템학회 학술발표 논문집 Vol.16 No.1

Human's sight holds the most extents among other senses. It will become more beneficial in person's emotion or body, if we form much better environment to human in connection with visual information as importance of visual information. Human is using a lot of display units on modem society. Basic colors that compose these are Red, Green and Blue. Using these three colors, we can change color sense of monitor or brightness degree. Suitable color degree by individual's environment can reduce person's stress or give comfortable feeling. So Factors by human's emotion and environment are standardized using fuzzy and the method that is to apply the result of Intelligent Color Control(ICC) on display is proposed.

Physico-Chemical Characteristics of Inland Aquaculture Waste Water

Tae Won Jang,Yun Beom Kim,Moon Soo Heo 한국생물공학회 2007 한국생물공학회 학술대회 Vol.2007 No.4