• Title/Summary/Keyword: 한국 제4기학회

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Discussions on the Distribution and Genesis of Mountain Ranges in the Korean Peninsular (I) : The Identification Mountain Ranges using a DEM and Reconsideration of Current Issues on Mountain Range Maps (한국 산맥론(I) : DEM을 이용한 산맥의 확인과 현행 산맥도의 문제점 및 대안의 모색)

  • Park Soo Jin;SON ILL
    • Journal of the Korean Geographical Society
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    • v.40 no.1 s.106
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    • pp.126-152
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    • 2005
  • In recent years, there are some confusions related to the definition and existence of mountain ranges, which have been described in current geography text books. We contend that these confusions came from the lack of understanding on the geomorphological processes that form the mountain system in Korea. This research attempts to clarify the definition of mountain ranges and offer geological and geomorphological explanations about the formation of them. Based on the analyses of the social and cultural causes underlying the recent debates on the existence of mountain ranges, we tried to identify the relationships among the definition of mountain ranges, geological structure of Korea, and the forming processes of mountain ranges. The current and past mountain range maps were compared with geological structures, geological maps, surface curvature, and hill shade maps. The latter two maps were derived from a Digital Elevation Model of the Korean Peninsular. The results show that we are able to prove the existence of most mountain ranges, which provides a useful framework to understand the geological evolution of Korean peninsular and formation of mountainous landscape of Korea. In terms of their morphological continuity and genesis, however, we identified five different categories of mountain ranges: 1) Uplift mountain ranges(Hamkyeong Sanmaek, Nangrim Sanmaek, Taebaek Sanmaek), which were formed by the uplift processes of the Korean Peninsular during the Tertiary; 2) Falut mountain ranges(Macheonryeong Sanmaek, Sobaek Sanmaek, Buksubaek Sanmaek), whirh were directly related to the uplift processes of the Korean Peninsular during the Tertiary; 3) Trust mountain ranges(Jekyouryeong Sanmaek, Kwangju Sanmaek, Charyeong Sanmaek, Noryeong Sanmaek), which were formed by the intrusion of granite and consequent orogenic processes during the Mesozoic era; 4) Drainage divide type mountain ranges, which were formed by the erosion processes after the uplift of Korean Peninsular; 5) Cross-drainage basin type mountain ranges (Kangnam Sanmaek, Eunjin Sanmaek, Myelak sanmaek), which were also formed by the erosion processes, but the mountain ranges cross several drainage basins as connecting mountains laterally We believe that the current social confusions related to the existence of mountain ranges has partly been caused by the vague definition of mountain ranges and the diversity of the forming processes. In order to overcome theses confusions, it is necessary to characterize the types of them according the genesis, the purpose of usages and also the scale of maps which will explains the mountain systems. It is also necessary to provide appropriate educational materials to increase the general public's awareness and understanding of geomorphological processes.

Present status ad future problems of Oceanography in the Korean Waters (한국 연안 해양학의 현황과 과제)

  • LEESUKWOO
    • 한국해양학회지
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    • v.27 no.4
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    • pp.342-349
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    • 1992
  • 삼면이 바다로 둘러 싸인 우리 나라에서 해양 개발 이용에 관심은 1960년대에 싹 트기 시작하여 기존 해양 조사 연구기관인 수산진흥원 및 수로곡이 주축이 되어, 한국 해양 과학 위원회 의 창립 쿠로시오 국제 공동 조사의 (1965∼1969)의 참가 그리고 서 울대학교 해양 학과의 탄생 등 대전환 기를 맞아 급속도로 발전 하였다. 1970년대에 해양 연구소가 발족되고 지금은 해양 전공학과가 십여개 과로 늘어나 해양 전문 고급 인력의 양성도 비약적으로 증가하였다. 한편 정부는 1989년에 해양 개발 기본 법을 제정하는 등 해양 개발에 박차를 가하는 등 큰 관심을 쏟고 있다. 그러나 해양 조사 연구에 대한 국가적인 투자 확대에서 불구하고 해양개발 이용을 위한 해양학 써비스 업무는 별로 향상되지 못하고 있으며, 국내 각 기관간의 상호 협력도 제대로 이루저지 지 못하고 있으며, 또 해양전문인력의 양성의 의의조차 정립하지 못하고 있는 것이 현 실이다. 이러한 시점에서 보다 효과적인 해양학 써비스 체제를 확립하기 위해 해양조 사연구의 현황을 분석하고 앞으로의 과제를 제시하는 것이 매우 큰 의의를 갖는다고 사료하는 바이다.

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A Study on New Courses Offered in Korean Library and Information Science (한국 문헌정보학 교과과정의 신규교과목 개설추이 분석 연구)

  • Noh, Young-Hee;Ahn, In-Ja;Choi, Sang-Ki
    • Journal of the Korean Society for Library and Information Science
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    • v.46 no.1
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    • pp.29-53
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    • 2012
  • This study analyzed the changes in Library and Information Science (LIS) courses by investigating the LIS curriculum of Korea in the past 20 years (1991-2011). Results showed that the total number of courses increased as a whole. As the Korean educational system moved forward to the faculty system (Hakbuje), the number of basic courses increased while the number of core courses decreased. But the opposite phenomenon appeared as universities returned to the department system (Hakgwaje). Also, we investigated the domain-specific distribution of each department by separating the courses of 34 Korean LIS Departments into these seven domains: General Library and Information Science; Information Organization; Library and Information Center Management; Information Services; Information Science; Bibliography; and Archival Science. The results showed that the number of courses reduced in most domains over the past 20 years, except for the Library Service and Information Science areas. This study also explored the following phenomena: disappeared courses, changed course's names, courses that integrated into a single course, courses that separated into various other courses, and newly emerging courses with the developing age.

Effects of Apigenin, an Antioxidant, on the Bioavailability and Pharmacokinetics of Etoposide (항산화제인 아피제닌이 에토포시드의 생체이용률 및 약동학에 미치는 영향)

  • Lim, Tea-Hwan;Park, Sun-Hee;Choi, Jun-Shik
    • Korean Journal of Clinical Pharmacy
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    • v.21 no.2
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    • pp.115-121
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    • 2011
  • 에토포시드와 아피제닌의 약동학적 상호작용 연구를 위하여 아피제닌 (0.4, 2.0 또는 8 mg/kg)과 에토포시드의 경구(6 mg/kg) 및 정맥 (2 mg/kg) 투여 하여 본 연구를 실시하였다. 아피제닌이 cytochrome P450 (CYP) 3A4 활성과 P-glycoprotein (P-gp)의 활성에 미치는 영향도 평가하였다. 아피제닌의 CYP3A4의 50% 효소활성억제는 $1.8{\mu}M$ 이었다. 아피제닌은 MCF-7/ADR 세포의 로다마인-123 세포 축적을 증가 시키므로 P-gp를 억제시켰다. 아피제닌은 에토포시드의 혈장곡선하면적과 최고혈장농도 (AUC and $C_{max}$)를 유의성 있게 증가시켰으나, 에토포시드의 최고혈장농도 도달시간 ($T_{max}$)과 생물학적 반감기 ($t_{1/2}$)에는 영향을 미치지 않았다. 따라서, 아피제닌 존재하에 에토포시드의 절대적생체이용률 (AB)은 대조군과 비교하여 유의성있게 증가되었다. 경구투여시와는 대조적으로, 아피제닌은 정맥 내로 투여된 에토포시드에서는 약동학적 파라미터에 어떤 영향도 미치지 않았다. 따라서 아피제닌이 에토포시드의 생체이용률을 증가시킨 것은 아피제닌이 소장과 간장에서 CYP3A4을 억제 및 소장에서 P-gp를 억제 시켰기 때문으로 사료된다.

Studies on Selection of Less Toxic Insecticides for the Aerial Control of Pine Needle Gall Midge (Thecodiplosis) japonensis Uchida et Inouye) (솔잎혹파리 항공방제용 저독성 농약선발연구)

  • 이형래;변병호
    • Korean journal of applied entomology
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    • v.33 no.3
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    • pp.201-206
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    • 1994
  • Trunk implantation method of phosphamidon 50% Lq.is commonly applied to control the pine needle gall midge (Thecodiplosis laponensts Uchida et Inouye) Since trunk implantaion is normally practiced during the late Spring, it is often difficult to accommodate necessay labor in mral area. As an alternative, aerial spraylng of less toxic ~nsecticide was designed. Usage of less toxic insecticide in the aenal control of pine needle gall midge can reduce the damage to forest ecosystem. The buproferin, one of the insect growth regulator, was selected at d~fferent rate of dilutions and the treatments effects ruere evaluated at different date and time When 50 t~mes diluted solution of buprofezin 40% SC was treated on different period, there was no significant difference in dficacies. the control efficacies of buproferin 40% SC was measured by occurrences (%) of gall formation of the pine needle gall midge using a ultra low volume (ULV) sprayer and the dilutions of 10X 30X and 50X of buprofez~n 40% SC gave efficacies. 72.4. 57.6 and 8.4, respectively.

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Comparison between Training and Participating Achievements of Delegetes of Korean Students I - Theoretical Part - (국제생물올림피아드 한국 대표 학생들의 훈련 성적과 국제생물올림피아드에서의 성적 비교 분석 I -이론 분야-)

  • Shim, Kew-Cheol;Lee, Hyun-Uk;So, Keum-Hyun;Chang, Nam-Kee
    • Journal of The Korean Association For Science Education
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    • v.18 no.4
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    • pp.627-633
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    • 1998
  • Achievements of Korean delegate students who attend on the 9th International Biology Olympiad(IBO) were compared with those of IBO participants for the 4th, 5th and 7th theoretical tests. It was predicted that four Korean delegates won medals in the 9th IBO on the basis of the average percentages of correct answer and the shifting patterns of achievement. And achievemens of four delegates during delegates training period were compared with that in the 9th IBO. Mean perecntages of theoretical part of them were 78.15%, 77.16%, 80.97% and 76.99% respectively, and total mean percentage was 78.32%. Their achievement was level for silver medalist. It was 86.56% on the average that they had achieved in the 9th IBO. This result was more than achievement in delegates training. Their percentages of achievement order were 90.84%, 97.71%, 82.44% and 70.99% respectively. One of them won gold medal and the others won silver medals. It was needed to develop effective teaching program for biology gifted-students and training preparing for IBO.

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Effects of Soil Environmental Conditions on the Decomposition Rate of Insecticide Fenitrothion in Flooded Soils (담수토양중(湛水土壤中)에 있어서 살충제(殺蟲劑) fenitrothion의 분해속도(分解速度)에 미치는 각종(各種) 토양환경조건(土壤環境條件)의 영향)

  • Moon, Young-Hee
    • Korean Journal of Environmental Agriculture
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    • v.9 no.1
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    • pp.1-8
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    • 1990
  • The effects of soil environmental conditions on the degradation rates of fenitrothion(O-O-dimethyl O-4-nitro-m-tolyl phosphorothioate) in soils under flooded conditions were examined in the laboratory. Fenitrothion was degraded rapidly and the half life period was within 4 days. Furthermore the degradation was mere rapid under flooded conditions than under upland conditions. The decomposition rate was varied with soils and soil temperatures. Fenitrothion degraded more slowly at 30ppm than at l0ppm. Repeated applications of fenitrothion in soils accelerated the degradation rates. The degradation remarkably increased with amendment of rice straw. However, degradation rates ,were virtually unaffected by the addition of the mixed-fertilizer, the fungicide IBP and the herbicide butachlor. The population of fenitrothion-degrading microbes, which were counted by MPN method, always corresponded with the degradation rates in the soils.

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Effects of Antibrowning Agents on the Quality and Browning of Dried Onions (갈변억제제가 건조양파의 갈변과 품질에 미치는 영향)

  • Kee, Hae-Jin;Park, Yang-Kyun
    • Korean Journal of Food Science and Technology
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    • v.32 no.5
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    • pp.979-984
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    • 2000
  • To improve the quality of dehydrated onion, antibrowning agents were screened. Effects of antibrowning agents on the degree of browning and the quality characteristics in dried onions were investigated. Sliced onions were dehydrated in an air drier at $70^{\circ}C$ within 3 percent moisture. Among various antibrowning agents, cyclodextrin and corn starch treatments were selected. Dipping in 4%(w/v) corn starch suspension proved more effective in preventing browning than other treatments. The change of color and the degree of browning showed a correlation. Dried onions treated with antibrowning agents prevented browning at around $24{\sim}32%$ compared to control. The contents of reducing sugar and vitamin C in treated onions had minimally changes.

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Five Views on RAMYEON -Focusing on the Analysis of Newspaper Articles from 1963 to 2012- (라면을 보는 5가지 시각 -기사분석을 중심으로-)

  • An, HyoJin;Oh, Se-Young
    • The Journal of the Korea Contents Association
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    • v.18 no.9
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    • pp.633-647
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    • 2018
  • Ramyeon is a wheat-food that has been mixed a dietary culture of China, Japan, American and Korea. Simultaneously it was the first convenience food that made of flour in Korea, which had been relatively few recipes until the early 1960's. To examine the changes of Ramyeon which has been consumed in large quantities since the late 1960s, this paper classified 1963~2012 into 6 periods. From political, economic, social, cultural and international perspectives we considered the changes of Ramyeon through the articles analysis of mass media(DongaIlbo, The KyunghyangShinmun, MBC news). The total number of articles was 3,823 with an average of 76.46/y. Each field was summarized as following sub-topics; In political(Election, North Korea), in economic(Price, Economy), in social(Promotion campaign for eating of flour, Incidents, Donation), in cultural(Consumption, Extreme situations, Nutrition) and in international field(Exporting). Each period was named according to the feature; Early stage, Expansion stage, Domestic growth stage, Overseas stage, Advanced stage, Transition stage. Ramyeon has changed in a closely relation with society for past 50 years.

Studies on the Assumption of the Locations and Formational Characteristics in Yigye-gugok, Mt. Bukhansan (북한산 이계구곡(耳溪九曲)의 위치비정과 집경(集景) 특성)

  • Jung, Woo-Jin;Rho, Jae-Hyun;Lee, Hee-Young
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.35 no.3
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    • pp.41-66
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    • 2017
  • The purpose of this research is to empirically trace the junctures of Yigye-gugok managed by Gwan-am Hong Gyeong-mo, a grandson of Yigye Hong Yang-ho who originally designed Yigye-gugok, while reviewing the features of the forms and patterns of gugok. The results of the research are as follows. 1. Ui-dong was part of the domain of the capital during the Chosun dynasty, which also is located in the city of Seoul as a matter of administrative zone. Likewisely, Yigye-gugok is taken as a special meaning for it was one and only gugok. Starting with Mangyeong Waterfall as the $1^{st}$ gok, Yigye follows through the $2^{nd}$ gok of Jeokchwibyeong Rock, the $3^{rd}$ gok of Chanunbong Peak, the $4^{th}$ gok of Jinuigang Rock, the $5^{th}$ gok of Okkyeongdae Rock, the $6^{th}$ gok of Wolyeongdam Pond, the $7^{th}$ gok of Tagyeongam Rock, the $8^{th}$ gok of Myeongoktan Stream, and the $9^{th}$ gok of Jaeganjeong Pavilion. Of these, Mangyeong Waterfall, Chanunbong Peak, and Okkyeongdae Rock are distinct for their locations in as much as their features, while estimated locations for Jinuigang Rock, Wolyeongdam Pond, Myeongoktan Stream, and Jaeganjeong Pavilion were discovered. However, Jeokchwibyeong Rock and Tagyeongam Rock demonstrated multiple locations in close resemblance to documentary literatures within secretive proximity, whereas geography, scenery, and sighted objects were considered to evaluate the 1st estimated location. Through these endeavored, it was possible to identify the shipping routes and structures for the total distance of 2.1km running from the $1^{st}$ gok to the $9^{th}$ gok, which nears Gwanam's description of 5ri(里), or approximately 1.96km for gugok. 2. Set towards the end of the $18^{th}$ century, Yigye-gugok originated from a series of work shaping the space of Hong Yang-ho's tomb into a space for the family. Comparing Yigye-gugok to other gugoks, numerous differences are apparent from beyond the rather more general format such as adjoining the $8^{th}$ gok while paving through the lower directions from the upper directions of the water. This gives rises to the interpretation such that Yigye-gugok was positioned to separate the doman of the family from those of the other families in power, thereby taking over Ui-dong. Yet, the aspect of the possession of the space lends itself to the determination that the location positioned at the $8^{th}$ gok above Mangyeongpok Waterfall representing Wooyi-dong was a consequence of the centrifugal space creation efforts. 3. While writings and poetic works were manufactured in such large quantities in Yigye-gugok whose products of setters and managers seemed intended towards gugok-do and letters carved on the rocks among others, there is yet a tremendous lack of visual media in the same respect. 'Yigye-gugok Daejacheop' Specimens of Handwriting offers the traces of Gwanam's attempts to engrave gakja at the food of Yigye-gugok. This research was able to ascertain that 'Yigye-gugok Daejacheop' Specimens of Handwriting was a product of Hong Yang-ho's collections maintained under the auspices of the National Central Museum, which are renowned for Song Shi-yeol's penmanship.