산악지형에서의 UHF대역 전파손실예측을 위한 LEE모델 적용방안 연구

이창원,전용찬,신임섭,김진국,Lee, Changwon,Jeon, Yongchan,Shin, Imseob,Kim, Jin-Goog 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.2

In this paper, we have compared some radio propagation models in order to verify the performance of W.C.Y LEE propagation model in mountain area. The four propagation models, which are Okumura-Hata, ITU-R P.525, Egli and W.C.Y. LEE, are analyzed by comparing the differences between measured values and propagation loss estimation values. And a correction method for W.C.Y LEE model is suggested to improve the performance of W.C.Y. LEE model with measured data in mountain area. Simulation results show that the estimation error using W.C.Y LEE model is the lowest among four propagation models. Also, the results show that the corrected W.C.Y LEE model with suggested method improves the performance of propagation loss estimation.

韓國産 자작나무科의 系統分類學的 硏究(序論)

李相泰,蘇雄永,田寬培,李愚喆 全北大學校 生物學硏究所 1981 生物學硏究年報 Vol.2 No.-

The present paper is an introduction to the whole project of "The systematic studies on Korean Betulaceae". Three studies under the project were performed this year and presented in this report : a review of taxonomic literatures and the construction of distribution maps by Woo-Tchul Lee, pollen morphology by Sang-Tae Lee and Moo-Yeol Kim, and wood anatomy by Woong-Young Soh and Kwan-Bae Jeon.

철갑소이탄에 의한 전투시스템 내 적재포탄의 순간화재에 관한 전산해석

이승철(Lee, Seung-Cheol),전우철(Jeon, U-Cheol),이해평(Lee, Hae-Pyeong),이헌주(Lee, Heon-Ju) 한국화재소방학회 2013 한국화재소방학회 학술대회 논문집 Vol.2013 No.추계

본 연구에서는 철갑소이탄이 장갑을 관통한 후 전투시스템 내의 적재포탄(고폭탄 또는 추진제)에 피탄되었을 때 순간화재 발생확률에 대해 전산해석을 수행하였다. 장갑은 RHA 재질로 설정하였고, 장갑 두께를 5~30 mm까지 5 mm씩 증가시키며 전산해석을 실시하였다. 고폭탄은 COMPB, TNT, PBX가 사용되었으며 추진제는 ANB가 사용되었다. 본 해석은 Autodyn 프로그램을 사용하였으며, 순간화재 발생 여부를 해석하기 위해 Lee-Tarver ignition and growth model을 사용하였다. 해석 결과, 철갑소이탄이 고폭탄 TNT와 PBX에 피탄되었을 때, 순간화재 발생확률이 모두 100%를 나타내었으며, 고폭탄 COMPB의 경우, 0.8~0.08%로 나타났다. 추진제 ANB의 순간화재 발생확률은 3.8~3.6%로 나타났다.

운동에너지 탄에 따른 전투시스템 내의 순간화재발생에 대한 해석적 연구

이승철(Lee Seung-Chul),전우철(Jeon Woo-Chul),이해평(Lee Hae-Pyeong),이헌주(Lee Heon-Joo),이창현(Lee Chang-Hyun) 제어로봇시스템학회 2012 제어로봇시스템학회 합동학술대회 논문집 Vol.2012 No.7

본 연구는 외부 위협탄에 의한 전투시스템의 취약성을 분석하기 위한 선행연구로써, 운동에너지 탄의 종류에 따른 가상의 전투차량 내부에 적재포탄에서 순간화재발생 여부에 대한 전산해석을 수행하였다. 본 해석은 Autodyn 프로그램을 사용하였으며 순간화재발생을 판단하기 위해 Lee-Tarver ignition and growth model을 이용하였다. 본 계산에서 운동에너지 탄은 type A와 type B 두 가지로 설정하였고, 고폭탄은 COMPB, TNT 및 PBX9404를 설정하였다. 전산해석 결과, 고폭탄의 재질이 TNT와 PBX9404가 COMPB 재질보다 순간화재발생 확률이 상당히 높음을 알 수 있고 type B의 운동에너지 탄이 type A 보다 순간화재발생 확률이 다소 높음을 알 수 있었다.

자연산 점몰개, Squalidus multimaculatus Hosoya et Jeon의 새인두흡충, Clinostomum complanatum (Rudolphi, 1814) 감염

박명애 ( Myoung Ae Park ),서정수 ( Jung Soo Seo ),정승희 ( Sung Hee Jung ),최희정 ( Hee Jung Choi ),전은지 ( Eun Ji Jeon ),지보영 ( Bo Young Jee ),이완옥 ( Wan-ok Lee ),우승호 ( Sung Ho Woo ),이은혜 ( Eun Hye Lee ) 한국어병학회 2011 한국어병학회지 Vol.24 No.2

경상북도 영덕군의 하천에 서식하는 점몰개 spotted barbel gudgeon (Squalidus multimaculatus Hosoya et Jeon)의 근육에서 새인두흡충 Clinostomum complanatum (Rudolphi, 1814)의 피낭유충이 발견되었다. 감염된 점몰개는 "yellow grub"인 기생충의 피낭유충으로 인해 표면이 울퉁불퉁하게 보였으며, 수면위에 힘없이 유영하였고 일부 폐사한 개체도 발견되었다. 분리된 탈낭유충의 형태는 혓바닥 모양이었으며, 크기는 2.85~5.89 mm×0.8~1.99 mm였다. 어체당 1~98 개의 피낭유충을 분리하였으며 평균 감염수는 25개로 나타났다. 특히, 성어크기인 평균 7 cm 정도의 점몰개는 100% 감염되어 있었다. 본 연구는 한국의 자연수계에 서식하는 어류에서 C. complanatum 의해 질병이 발생하고 폐사가 일어난 첫 보고이다. The metacercariae of Clinostomum complanatum (Rudolphi, 1814) were isolated in the whole body muscle of wild freshwater fish, spotted barbel gudgeon (Squalidus multimaculatus Hosoya et Jeon) from the local river in Yeongdeok, Gyeongsangbuk-do, Korea. The infected fish with bumpy body surface by "yellow grub" showed erratic swimming behavior and some fish were died. The isolated excysted metacercariae were tongue shaped and 2.85~5.89 mm × 0.8~1.99 mm in size. 1~98 metacercariae were isolated in individual fish and mean infection intensity was 25. All examined adult spotted barbel gudgeon sizing 7 cm in body length were infected. This is the first report of disease outbreak and mortality caused by C. complanatum infection in wild freshwater fish in Korea.

Occurrence of Off-type Plants in japonica/indica Hybrid Rice Cultivars

Lee,Jeom-Ho,Jeon,Yong-Hee,Hwang,Hung-Goo 한국자원식물학회 2004 Plant Resources Vol.7 No.2

Frequent occurrence of off-type plants in a given cultivar has been a serious problem in both breeder s and farmer s fields. An experiment was designed to examine the differences in rate of occurrence of off-type plants among Tongil-type cultivars (high yielding cultivars derived from indica/japonica hybridization) from which the possible cause of higher occurrence of off-type plant in a specific cultivar was deduced. Among five Tongil-type cultivars examined for morphological variant in the field, only one cultivar, Dasanbyeo, had off-type plants. When analyzed with SSR markers, off-type plants showed different band patterns from original cultivar, having several extra bands in addition to cultivar-specific band, suggesting that off-type plants were originated from Dasanbyeo, rather than originated from mixing or mishandling of seed materials with other cultivars. The possible cause of off-type occurrence seems to be natural pollination with other cuItivars adjacent to the original cultivar during seed multiplication. This was supported from the observation that self-crossed progeny of the off type plants showed a wide range of variation of agronomic traits which could not be observed when there was a smaller introduction of genes to the fixed germplasm as happened in the case of cultivar mutation. Another evidence supported this idea that Dasanbyeo showed much of difference in floral organ and behavior to other cultivar to be subjected to higher out-crossing than other cultivars examined.

A Study on Export Promotion Strategy of K-Beauty Korean Wave Products: Focused on Cosmetic

Jeon,Dong-Han,Lee,Pyoung-Soo,Seo,Yong-Won 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

This study aims to inquire into strategies for promoting export by investigating the real Korean Wave products of K-Beauty through approaching closer to the formation process of Korean Wave and Korean Wave products. In the first place, this study chose classification method of Korean Wave products from K-Beauty products by examining and reviewing general situations and various factors of Korean Wave. After this process, this study inquired into the strategies for promoting export of K-Beauty products. In the last place, the implications of the study were clarified. The items which benefited most from Korean Wave by the recent Korean Wave fever correspond to cosmetics, accessories, women s wear, cellular phones, confectionery, beverages and cigarettes. In addition to K-Beauty, it will be required to expand the area in a more diversified way toward K-Food, K-Health and K-Town, aiming at sustainable development of Korean Wave.

種間交雜에 依한 芍藥 新品種 育成에 關한 硏究

李萬相,李重浩,全炳機 圓光大學校 1981 論文集 Vol.15 No.1

Present study was carried out to investigate the morphological characteristics and geographical distribution of cultivated or wild Paeonia albiflora, wild P. japonica and wild P. obovata. Also, this study was to investigate the crossing affinity, shape of plant, shape or color of flower, flowering time and maturing time, armratio, the numbers and kinds of trabant chromosome, and the karyotype of chromosomes of F₁ plants which were crossed among three cultivated or wild species and they were compared with those of their parents. The results obtained were as follows: 1. In the shape of flower, root, and plant, cultivated P. albiflora had a large differences among individuals. The flowering time of that was before or after May 20 and their maturing time of seed was about August 22, and then the color of flowers was various as white, scaret, red, pink etc. The flower was simple or doulble. They had two to six follicles and the color of seeds was darkbrown, straight and long roots were fat and spread toward all direction. 2. There was some morphological difference among individuals of P. albifora which was distributed in north of Jeon Buk district. The color of their leaves was light green and their flower was simple and white. They had two to four follicles. Their seeds were dark black brown and more or less smaller than the cultivated one. Roots were resemble to cultivated P. albiflora. 3. The shapes of leaf, flower and root of P. japonica which was distributed at high mountains had some differences among individuls. Their flowers were white and flowering time was before or after April 20. Maturing time was August 9. Curved follicle ranged from two to three and some blackseed sit in indigo-violet flesh of fruit. 4. The external forms of P. obovata which was mainly distributed at hight mountain in north of Gyeonggi Do was similar to P. japonica. But their plant height was larger by far and flowering time was before or after May 25. Their maturing time was about August 22 and the flowers was red or pink. Among three putative parents their flower was smallest of all and the period of flowering was shortest and curved long follicle on the one stalk was two to three. Also, In their indigo-violet flesh of fruit, there was a few black seeds. 5. Seed-bearing percents which was crossed between P. albiflora and P. japonica were a few, but those which was crossed between cultivated P. albiflora and wild one were high. 6. The plant height of F₁ which was crossed P. albiflora with P. japonica was larger than that of their parent. The flowers of F₁ were more beautiful and their flowering time was earlier one month than that of cultivated Paeonia. Their F₁ plants did not bear fruit dued to abnormal meiois but the quantity of their roots was much than that of their parent. 7. The plant height of F₁ which was crossed between cultivated P. albiflora and wild one was mostly larger than that of their parents. The color of their flower was mostly pink. Their fruit bearing was better and the quantity of their root was abundant than that of their parents. 8. The flowers of F₁ plants which were improved by the line crossing among cultivated Paeonia were beautiful and the period of flowering was very long. 9. In mostly, the proteins, ashes, Fe, Cu, Ca, and total nitrogen in wild Paeonia roots were abundant than those of cultivated one. 10. The yield of F₁ plant roots which were crossed between cultivated P. albiflora and wild one were similar to cultivated Paeonia and the compounds in their roots were similar to wild Paeonia. 11. The wild Paeonia or cultivated one and F₁ plants among them had different chromosome number, arm ratio, trabant. and karyotype formulae, respectively. 韓國에 自生 또는 栽培되고 있는 Paeonia albiflora(栽培, 野生種), P. japonica(野生種), P. obovata(野生種)의 形態, 分布와 3推定原種인 野生芍藥과 栽培芍藥의 種間交雜, 系統(品種)間 交雜에서의 交雜親和力, 種間 또는 系統間雜種인 F₁芍藥들의 草型, 花型, 花色, 開花期, 成熟期, 뿌리의 收量, 藥成分, Arm ratio, 附隨染色體數와 種類, 核型式 等을 兩親과 같이 比較調査하였던 바 그 結果는 다음과 같다. (1) 栽培芍藥 P. albiflora는 草型, 花型, 根莖 等에 있어서 個體別로 큰 差가 있고, 開花期는 5月 20日 前後이며, 成熟期는 8月 22日 前後이고, 花色은 白色, 赤紅色, 紅色, pink色 等 여러 가지이다. 꽃은 홑 또는 겹이고, 골돌은 半直立으로 2~6個이며, 種子는 暗褐色이다. 直長肥厚한 뿌리는 四方으로 뻗어 있다. (2) 全北 以北地方에만 分布되어 있는 P. albiflora의 個體別 形態는 若干 差가 있는데. 葉은 淡綠色이고, 白色花로 홑 꽃이다. 골돌은 半直立으로 2~4個이고, 種子는 暗黑褐色으로 栽培種보다 多少 작다. 뿌리는 直長肥厚하여 여러 곳으로 뻗어 있다. (3) 深山에 分布되어 있는 P. japonica의 葉型, 色型, 根型에 若干 差가 있고, 開花期는 4月 20日 前後, 成熟期는 8月 9日이며, 白色花로서 彎曲된 골돌은 2~3個인데 남자색의 果肉內에 黑色의 種子가 몇 個씩 있다. (4) 京畿道 以北地方의 深山에 主로 少數 分布되어 있는 P. obovata의 外部形態는 P. japonica와 類似하나 草長이 훨씬 크고 開花期는 5月 25日 前後, 成熟期는 8月 22日 前後이며, 紅色花 또는 pink色花로서 3推定原種中 꽃이 第1 작고, 開花期間이 짧으며 彎曲된 긴 골돌은 2~3個인데, 남자色 果肉內에 黑色의 種子가 몇 個씩 들어 있다. (5) P. albiflora에다 P. japonica를 種間交雜한 F₁의 結實率은 極히 少數이고, 敎培種 P. albiflora에 野生種 P. albiflora 또는 系統交雜한 F₁의 結實은 잘 되었다. (6) P. albiflora에다 P. japonica를 種間交雜한 F₁雜種의 草長은 兩親보다 크고, 꽃이 아름답고, 各種 花色의 花期가 栽培芍藥보다 1個月間 빨라지고, 開花期間이 걸어진 個體도 있다. F₁들은 減數分裂異常으로 結果, 結實은 되지 않으나 뿌리의 收量은 兩親보다 훨씬 많았다. (7) 栽培種 P. albiflora에다 野生種 P. albiflora를 交雜한 F₁芍藥의 草長은 兩親보다 大部分 크고, 花色은 中間인 pink色이 大部分이고 赤紅色이나 白色은 極少數로 結實은 잘 되며, 뿌리의 收量은 兩親보다 훨씬 많은 個體가 많았다. (8) 栽培芍藥의 系統間交雜에서 育成된 F₁은 꽃이 아름답고 開花期間이 極히 걸어지고, 花瓣에 葉綠素가 섞여있는 個體도 있으며, 뿌리의 收量이 兩親보다 많은 個體들이 育成되었다. (9) 有機物中 蛋白質, 灰分, 糖分, 纖維素와 無機物中 K, Ca, Mg, Na, Fe, Mn, Cu, Zn, P₂O_(5), T-N 等의 成分을 分析하였는데, 糖分을 除外하고는 大部分이 栽培芍藥보다 野生種 芍藥에 많이 含有되어 있다. 蛋白質, 灰分, Fe, Cu, Ca, T-N 成分은 野生芍藥에 特히 많이 含有되어 있다. (10) 栽培種 P. albiflora에다 野生種 P. japonica를 交雜한 F₁이나, 栽培種 P. albiflora에 野生種 P. albiflora를 交雜한 F₁뿌리의 收量은 栽培種과 같이 많고 藥成分률은 野生種에 가까운 含量이 들어 있다. (11) 野生種 P. japonica, P. albiflora, P. obovata 그리고 栽培種 P. albiflora와 種間雜種, 系統間雜種들의 染色體數, Arm ratio, 附隨染色體數와 種類, 核型式을 比較調査하였던 바 種間 또는 系統間 F₁들에서 差가 있었다.

성별, 연령 및 생리주기에 따른 대장 통과시간의 변이

이상전,이두한,송영진,최재운,장이찬 대한대장항문학회 1995 Annals of Coloproctolgy Vol.11 No.1

The Violation of Children's Rights Committed by Child Pornography on the Internet

Lee, Jaeyeon,Jeon, Sohee Research Institute of Asian Women Sookmyung Women' 2005 Asian Women Vol.20 No.-

The healthy environment in which children are raised is severely threatened in a society of rapid technological growth. Moreover, with the birthrates decreasing, child protection in most countries has been emerging as one of the keenest issues from the newly started millennium. The Internet holds vast quantities of helpful information and also the Web holds great potential for further growth. However, as with any tool, it is also accompanied by negative effects. Especially, the internationalization and development of mobile technologies and Internet made it easy to spread child pornography between international borders or locales. Thus, the protection of children should be implemented not only on offline premises but also online. This thesis discusses problems pertaining to the regulation of child pornography as well as ways to change the present trend in order to protect children from child pornography prevalent in the cyber space which threatens the development of children.