우루과이 라운드(UR) 協定 시장개방조치의 國民經濟 및 農業部門 效果

金忠實,李相昊 한국국제경제학회 2003 국제경제연구 Vol.9 No.1

본 논문에서는 다국간 일반균형 모형을 이용하여 우루과이 라운드 협정이 국민경제 및 농업부문에 미친 영향을 분석하였다. 분석결과 UR 이행에 따른 후생효과는 경제규모가 큰 선진국이 크게 증가하는 것으로 분석되었다. 우리나라는 UR 이행에 따른 영향으로 농업부문의 산출이 감소하였고, 이로 인해 농업부문 GDP도 감소하는 것으로 나타났다. 또한, 수입농산물과 국산농산물의 대체성이 커질수록 농업부문 GDP 감소폭은 더욱 커지는 것으로 분석되었다. This paper focuses on the impact of the Uruguay Round (UR) implementation on Korean economy and agriculture using a multi-regional general equilibrium model. The main results of this study as follows. The impact of the UR on welfare increases in developed countries more than developing countries. The results of this study show that the Uruguay Round has had a negative impact on agricultural production in Korea. As expected from a high value of substitutability among agricultural sectors, there are considerably more losses to the agricultural GDP in Korea.

도서영역에서의 동화책에 기초한 통합적 수·과학활동의 제공이 유아의 상호작용에 미치는 효과

심성경,김영실,이선경 圓光大學校 1995 論文集 Vol.30 No.1

This study is to look into the effect of literature-based activities on children's peer interaction around literature. For the study, experiments were conducted over the period of nine weeks, with one class each from two kindergartens in Seoul as subjects. The experimental group was induced to literature-related activities based on the children's book, and their base-line response was video-taped twice and treatment three times out of seven. The control group was presented with only books, and their base-line response was video-taped twice and treatment once. These taped materials have been analyzed in accordance with an observation system specifically designed for this study. The analysis was made in terms of the number of children who interacted. The analysis has found that literature-based activities increase children's peer interaction around literature. It has also found that the interaction is chiefly peer collaboration, mostly between two children.

제주도 감귤원 토양에서 GUS, RF, AF 지수를 이용한 농약의 용탈잠재성 평가

오상실,현해남,문두길,정종배 한국환경농학회 2002 한국환경농학회지 Vol.21 No.1

유기물함량이 다른 감귤원 토양을 대상으로 CUS, RF 및 AF값을 비교하여 감귤원에서 많이 사용되고 있는 농약 종류별 지하수 오염 잠재성을 평가하였다. GUS에 의하면 metribuzin과 metolacholr는 조사된 모든 토양등에서 용탈 가능성이 큰 것으로 평가되었으며, alachlor와 lin-uron도 대부분 토양에서 용탈가능성이 높은 것으로 평가되었으며 linuron의 경우에는 특히 비화산회토양에서 용탈의 가능성이 매우 높은 것으로 나타났다. Diuron과 diniconazole은 대부분 토양에서 용탈 가능성이 없는 것으로 평가되었고, chlorothalonil과chlorpyrifos는 유기물 함량에 관계없이 용탈 가능성이 없는 것으로 평가되었다. RF에 의한 평가에서는 diniconazole, chlorothalonil, chlorpy-rifos는 모든 토양에서, linuron과 diuron은 일부 비화산회토를 제외한 모든 토양에서 이동성이 매우 낮은 것으로 분류되었으며,metolachlor와 alachlor는 대부분의 토양에서 이동성이 보통인 것으로, metribuzin은 유기탄소함량이 낮은 토양에서 오염 잠재성이 있는 것으로 평가되었다. AF에 의하면 diniconazole, chlorothalonil, chlorpyrifos는 화산회토, 비화산회토에 관계없이 지하수 오염 잠재성이 없는 것으로 평가되었으며, 반면 metribuzin은 화산회토, 비화산회토에 관계없이 오염 잠재성이 있는 것으로 평가되었다. Metolachlor는 비화산회토에서 지하수 오염 잠재성이 있는 것으로 평가되었고, al-achlor, linuron 및 diuron은 유기물 함량이 낮은 일부 비화산회토에서만 지하수 오염 잠재성이 우려되는 것으로 나타났다. 농약의 용탈잠재성은 용해도, 흡착성, 잔류성 등의 약제 자체의 특성과 함께 유기물 함량, 투수성 등 토양의 물리화학적 특성에 따라서 결정된다. 본 연구의 결과를 보면 이러한 일반적인 원칙이 각 농약의 용탈잠재성 지수에 그대로 반영되었는데, 용해도가 높고, 흡착성이 약하며 잔류성이 긴 약제일수록 대부분의 토양에서 용탈잠재성이 큰 것으로 나타났다. 토양의 특성 중에서는 특히 농약의 흡착에 직접 영향을 미치는 유기물 함량이 용탈잠재성 지수를 결정하는 중요한 요인으로 볼 수 있는데, 본 연구의 결과에서도 일반적으로 유기물 함량이 높은 화산회 토양에서는 농약의 용탈잠재성이 비화산회토양에 비교하여 낮은 것으로 나타났으며, 용해도가 높고 흡착성이 매우 낮은 약제인 metribuzin의 경우에도 투수성이 상대적으로 높은 화산회 토양에서보다 투수성이 낮은 비화산회토양에서 용탈 가능성이 높게 평가된 것으로 보아 대부분 농약의 용탈잠재성을 결정하는데 있어 토양의 투수성보다도 유기물 함량이 더욱 중요하게 영향을 미치는 것으로 판단할 수 있다. 따라서 비화산회토를 위주로 한 유기물 함량이 낮은 토양이 분포된 지역의 지하수가 농약의 오염에 취약할 것으로 판단할 수 있으며, 이들 지역에서는 용탈잠재성이 높은 것으로 평가된 약제들의 사용을 최대한 제한함으로써 제주도 지하수의 농약 오염을 방지할 수 있을 것이다. 물론 제주도 감글원에서는 토양의 유기물 함량과 약제의 흡착성을 우선적으로 고려하여 사용할 농약을 선택해야 할 것으로 보이나, 그 외 약제의 잔류성, 사용량, 사용시기와 함께 기후조건, 토양의 투수성, 토충의 깊이, 지하수 깊이 등의 지역적인 특성들이 농약의 용탈잠재성에 미치는 영향도 더욱 구체적으로 파악되어야 할 것이며 농약의 선택 과정에서도 이러한 특성들이 앞으로 고려되어야 할 것이다. Contamination of groundwater by agrochemicals used in the regional-scale is now a major environmental problem, and this is especially true for Cheju island where virtually all potable water is from groundwater. The objective of this study was to assess leaching potential of eight pesticides in soils of citrus orchards using groundwater ubiquity score (GUS), retardation factor (RF) and attenuation factor (AF). Considering GUS estimated in 30 citrus orchard soils, metribuzin and metolachlor were classified as leacher, alachlor in volcanic ash soils and linuron in non-volcanic soils were classified as leacher, but chlorothalonil and chlorpyrifos were classified as non-leacher. For RF values, metribuzin was classified to be mobile in soils of low organic carbon, metolachlor and alachlor were classified to be moderately immobile in most soils, but linuron, diuron, diniconazole, chlorothalonil and chlorpyrifos were all classified to be very immobile. For AF values, diniconazole, chlorothalonil, and chlorpyrifos were classified to be very unlikely leachable in all of the soils, metribuzin was classified to be likely leachable, and metolahclor, alachlor, linuron and diuron were classified to be leachable only in non-volcanic soils. Although there were some variations in the relative potential of leachability of pesticides estimated with the three different indices, the ranking was essentially determined on the base of the intrinsic properties of the chemicals and environmental properties. Among the eight pesticides, metribuzin, metolachlor, and alachlor, which have high water solubility and low K_(oc) values, have a significant leaching potential especially in non-volcanic ash soils of low organic carbon. But diniconazole, chlorothalonil, and chlorpyrifos, which have low water solubility and high K_(oc) values, were classified to be very immobile in all of the soils. Therefore, to lower the possibility of pesticide contamination of the groundwater in Cheju island, those pesticides which have high water solubility and low K_(oc) values should be used with care in soils of low organic carbon including non-volcanic ash soils.

재가노인의 일상생활동작수행의 의존성과 생활만족에 관한 연구

홍춘실,김현리,이상화 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1

This study was conducted to analyse the correlation between the ADL dependency and life satisfaction. Data were collected from the 102 home resident eldery who have no dementia by cognition test. The age distribution f subjects were 65 years and over The data were collected from January 16th to February 15th, 1997. The instruments used for this study were a survey of general characteristics(10 items), physical function(15 items), life satisfaction(20 items). The data were analysed by using an SPSS program and included percentage, t-test, ANOVA & Pearson correlation coefficient. The result of the study are summarized as follows: 1. The mean of ADL dependency score was 5..912 in a possible range of 15 to 60 when 15 indicates high dependency and 60 incicates low dependency. 2. The mean of life satisfaction score was 20.363 in a possible range of 0 to 40 when 0 indicates low life satisfaction and 50 indicates high life satisfaction. 3. The relationship between ADL dependency and life satisfaction for old people in home proved to be of statistically highly negative correlation(r=-.2553 P=.01). 5. General characteristics related to life satisfaction was educational status, household status, economic status, personality, perception of health(P<0.05). In conclusion, it was identified that ADL dependency is the important variable influencing the life satisfaction of the elderly. Therefore, more efforts are needed to decreased the ADL dependency of the elderly to enhance life satisfaction of the elderly.

IP 주소 프로토콜 충돌검출시스템 설계 및 구현

유상민,전호실,박기홍 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

In this thesis, a method of solving the IP(Internet Protocol) address collision problem on the Web browser in the TCP/IP based on LAN(Local Area Network). These days a number of computers are increasing in geometrical progression, but general users who are not experts are lack of the knowledge about TCP/IP address, by they may use not only their own but also other users' TCP/IP addresses by mistake or intentionally. For the more they may use IP address which is the same as network equipments and then the situation will cause the whole network to be disturbed. As the result it may be happened that not only the original users' network but also the whole users' one do not operate properly in the LAN. In this thesis, the system proposed in this thesis collect address informations of personal computers which are objects of management in local area network and network systems (sever, workstation) and find whether the address informations which are used at that time are the same with the exact which are stored, and then compares with IP address information in the RARP packet on the WEB Browsers. And therefore want to protect the disturbances of network system caused by address change which are occurred by design or by mistakes. It is demonstrated that it can be protected by using the suggested method.

치간 삭제 후 불소 및 수산화인회석 도포 시 법랑질 표면의 함량 및 결정구조 변화에 관한 연구

김상철,홍현실,황영철 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.6

본 연구의 목적은 치간삭제 후 불소 및 수산화인회석 페이스트의 치면 도포에 대한 법랑질 표면의 결정구조 및 재광화를 평가하고자 하였다. 치간삭제 후 1.23% 인산화 불소 및 10% 수산화인회석 페이스트를 치면에 도포한 후 법랑질 표면의 결정구조 변화를 주사전자현미경으로 관찰하고, 법랑질 표면의 칼슘, 인, 불소 함량 등의 변화를 energy dispersive X-ray spectroscopy (ESD)로 분석하였다. 실험결과 10% 수산화인회석 페이스트 도포한 군에서 칼슘 함량이 증가하였고 (p < 0.01), 치간 삭제 후 거칠었던 법랑질 표면이 매끄럽고 부드러워졌으며 법랑질 결정구조가 작고 치밀해짐을 관찰할 수 있었다. 이상의 결과는 치간삭제 후 불소 및 수산화인회석 도포가 치면 결정구조 및 재광화에 유리하다는 것을 의미한다. The aim of this study was to evaluate the remineralization of interdentally stripped teeth after fluoride gel or hydroxyapatite paste application. Methods: After interdental stripping, 1.23% fluoride gel or 10% hydroxyapatite paste was applied three times a day, with a duration of four minutes, for a week. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to compare the change of surface contents and crystal structures before and after the application of fluoride gel or hydroxyapatite paste. Results: EDS analysis indicated that calcium contents were increased after 10% HAp paste application on stripped enamel (p < 0.01). SEM view showed that enamel surfaces in groups of 1.23% APF gel or 10% HAp paste application were smoother than those of control group, which was regarded as filling of the pore structure. And pores between crystal structures in groups treated with 1.23% APF gel or 10% HAp paste were smaller than those of control group. Conclusions: Application of APF or HAp on stripped enamel could positively influence on the surface contents or crystal structure.

서울·경기 일부지역 대학생의 Take-out Food 이용실태

유성은,한영실,주나미 한국조리과학회 2003 한국식품조리과학회지 Vol.19 No.5

This study was designed to identify the teke-out food usage of university students in Seoul and Gyeonggi-do. Questionnaires were used to analyze these habits among 500 respondents. 1. The Frequency of Take-Out Food use: the greatest proportion of students useds take-out foods once or twice a week (33.8%). 2. The reasons for Take-Out Food use: fastness was the major reason (47.8%). 3. The day of the week for Take-Out Food use: the majority of the students used Take-Out foods regardless of the day (54.4%). 4. The time of day for Take-Out Food use: 6~8 p.m. for 31.6%. 5. The cost spent in each meal: 51.6% spent 3,000 to under 5,000 won. 6. The menus of Take-Out Food used: coffee was the most popular of all the take-out foods (43.6%). 7. Points considered when buying Take-Out Food: the majority of the college students thought tastes and quality of the foods were the most important considerations (51.0%). 8. The source of information about Take-Out Food: 43.4% of the students obtained information from their friends.

연삭의 채터 발생과 연삭 숫돌 수명의 연관성에 대한 실험적 고찰

이상태,이재환,정윤교,김재실 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.5

The chatter to raise grinding operating is reduce the precision and the quality. In this study, In reply to AE signal and the normal force generated in the grinding operating were measured (1) the amplitude in the mathematical model of the normal force is the form as to transform an exponential (2) the chatter growth is minus point of an exponent. (3) From the observed wheel aspect after the chatter growth, it was to investigated the concern of the chatter growth and the wheel life.

NH₃가스 미량첨가 분위기에서의 CO-H₂혼합가스에 의한 과탄화철의 합성

정성실,정우창,강흥원,박응열,정원섭,박익민 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.11

The synthesis process of iron carbide was proceeded in two stages of reduction of hematite fines by H₂ gas, and carburization of the reduced metal by CO-H₂ gas mixture at 600℃. The surface of reduced iron was pre-treated with an addition of 0.05 vol% NH₃-Ar before carburization. The synthesized iron carbides were comprehensively explored by C/S analyzer (Low C/S determinator), Mossbauer spectroscopy, X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy at various reaction times of 5, 10, 15, 20, 25, 30, and 35 min. By addition of a small amount of NH3 gas, the super iron carbides contained 10 wt% carbon were made, and such addition stabilized iron carbides. It was found that addition of NH3 gas played a major role in the formation of iron carbide without decomposition (Fe₃C→ 3Fe+C) of iron carbides and precipitation of free carbon. From these results, we succeed in synthesis of super iron carbide, Fe_(5)C₂, with a stable single phase without Fe and Fe₃C phases. (Received August 2, 2004)

염증성 근섬유모세포종의 증례보고

은상아,박혁,차인호,김현실,정호걸,김기덕,박창서 대한구강악안면방사선학회 2006 Imaging Science in Dentistry Vol.36 No.3

The inflammatory myofibroblastic tumor (inflammatory pseudotumor) is a rarely occurring soft tissue lesion of unknown etiology. It can be of any location, but commonly it is found in lungs. It has been considered as a nonneoplastic reactive inflammatory lesion, but nowadays, confusion and dispute about its character is increasing due to its high recurrence rate and metastasis. We present a patient who had been diagnosed with an inflammatory pseudotumor in the right maxilla area, 1 year before visiting our hospital. After that, her pain and swelling did not resolved and she visit our hospital. On radiographic examination, aggressively infiltrative growth of the lesion with destruction of adjacent bony structure was noted. We found unusual aggressiveness of the inflammatory myofibroblastic tumor of the head and neck region. Because the typical behavior of the inflammatory myofibroblastic tumor is not defined yet, we recommend the surgical excision of the lesion and close follow-up.