• Korean Journal of Agricultural Science
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• v.24 no.1
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• pp.16-20
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• 1997

Acrolepiopsis sapporensis Matsumura was reared on welsh onions in the laboratory in Taejon for observation on its bionomics; the adults were provided with 10% sugar solution. At controlled temperatures the stone leek minor female adult laid averages of about 103 at $15^{\circ}C$, 113 at $20^{\circ}C$ and 134 at $25^{\circ}C$. Adult lived for averages of about 10 days at $15^{\circ}C$, 8~9 days at $20^{\circ}C$ and $25^{\circ}C$ and 5 days at $30^{\circ}C$. The egg hatched in about 10~11 days at $15^{\circ}C$, 5~6 days at $20^{\circ}C$ and 5 days at $25^{\circ}C$. The larval stage lasted 25~26 days at $15^{\circ}C$, 11 days at $20^{\circ}C$ and 7~8 days at $25^{\circ}C$. The pupal stage lasted 13 days at $15^{\circ}C$, 9 days at $20^{\circ}C$ and 7~8 days at $25^{\circ}C$.

• Proceedings of the Korean Quaternary Association Conference
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• 2004.06a
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• pp.49-50
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• 2004

푸른 진주라 불리는 훕스굴호는 러시아 국경에 인접한 몽고 북부의 청정호수로 해발 약 1,645m 지점에 위치한다. 훕스굴호의 길이는 약 136km이고, 폭은 20-40km이며, 최대수심은 약 262m 이다. 이 호수의 물은 세계에서 가장 깨끗한 담수 중 하나로 몽고 지표수원의 약 70%를 공급하고 있다. 훕스굴호는 바이칼 열곡대내에 형성된 일종의 구조호로 약 240만년 내지 400만년전에 형성된 것으로 추정되고 있다. 훕스굴호는 자연공원으로 지정되어 보호되고 있으며, 따라서 호수의 유역은 다행스럽게도 인간활동에 오염되거나 교란되지 않아 다양하고 흥미로운 육상/수성 생물상을 보유하고 있으며, 퇴적물 기록 역시 후기 신생대 동안의 중앙아시아의 지구환경 및 기후변화 연구에 매우 적합하다. 바이칼 시추사업 (Baikal Drilling Project)은 신생대 후기 동안의 중앙아시아의 지구조진화 및 전지구적 기후변화를 규명하기 위해 미국, 러시아, 일본, 독일 등이 참여한 다국가 공동사업이다. 바이칼 시추사업 연구팀은 지난 15년간 많은 노력과 예산을 투자하여 바이칼 호로부터 총 1,600m에 이르는 방대한 양의 퇴적물 코아를 성공적으로 회수하였고, 이 시료를 이용하여 후기 신생대 동안의 중부 유라시아 대륙의 고기후/고환경 진화과정을 성공적으로 규명하였다. 바이칼 시추사업이 성공적으로 진행됨에 따라, 이 사업에 참여했던 러시아와 일본의 과학자들은 바이칼호의 서쪽에 위치한 몽고 북부의 훕스굴에도 많은 관심을 가지게 되었으며, 동시에 바이칼 시추사업의 후속사업으로 훕스굴 시추사업을 새롭게 추진하게 되었다. 한편, 대륙내부에서의 제4기 지구환경 및 기후 변화 과정에 많은 관심을 가지고 연구해 오던 한국지질자원연구원도 2003년에 정식 회원으로 훕스굴 시추사업에 합류하였다. 훕스굴 시추사업 연구팀은 몽고의 지질광물자원연구소 (대표연구기관), 러시아의 지구화학연구소, 일본의 나고야대학교 그리고 한국의 지질자원연구원 등 4개국의 연구기관으로 구성되어 있다. 이들 4개 연구기관은 시추획득 및 기초연구 수행에 필요한 연구비를 현금 혹은 현물 (장비 포함)의 형태로 공동부담하고 있으며, 따라서 획득한 시추코아에 대해서도 각 연구기관이 전 구간에 대해 동일하게 25%의 소유권을 가지고 있다. 훕스굴 시추사업은 2008년까지 수행될 계획이며, 시추작업은 2005년까지 완료될 계획이다. 연구 진행과 관련하여, 공동연구의 명분을 높이고 분석의 효율성을 높이기 위해서 시료채취 및 기초자료 획득은 4개국의 연구원이 모여 공동으로 수행한 후의 결과물을 서로 공유하고, 자세한 전문분야 연구는 각 국의 대표기관이 독립적으로 수행하는 방식을 택하였다. 훕스굴에 대한 제1차 시추작업은 2004년 3월 말에 실시하였다. 시추작업 결과, 약 80m의 시추 코아가 성공적으로 회수되어 현재 러시아 이르쿠츠크 지구화학연구소에 보관중이다. 이 시추코아는 2004년 8월 중순경에 4개국 연구팀원들에 의해 공동으로 기재된 후에 분할될 계획이다. 분할된 시료는 국내로 운반되어 다양한 전문분야별 연구에 이용될 것이다. 한편, 제2차 시추작업은 2004년 12월에서 2005년 2월 사이에 실시될 계획이다. 수백만년에 이르는 장기간에 걸쳐 지구환경변화 기록이 보존되어 있는 훕스굴호에 대한 시추사업은 후기 신생대 동안 유라시아 대륙 중부에서 일어난 지구환경 및 기후변화를 이해함과 동시에 이러한 변화가 육상생태계 및 지표지질환경에 미친 영향을 이해하는데 크게 기여할 것이다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.3
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• pp.167-172
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• 2007

Manure recycle is an emerging issue in agriculture in Korea these days. Farmers are keeping eye on legume mixture with grasses for nitrogen fixation and transfer to companion crops by legumes. We had a trial to investigate the effect of different legume mixtures on nitrogen fixation and transfer in spring soil. The treatment was arranged in a randomized complete block design with three replications. Three different mixtures were used(rye+hairy vetch, Italian ryegrass+crimson clover, oat+pea) and sowed in pots with paddy soil from western part of Korea(Seo Chon County). Pots with rye+vetch were transplanted from field of RDA(rural development administration) in Suwon on 2 February 2007 and other mixture treatments were sowed on early March with different sowing rate(7:3=Italian:crimson, 6:4=oat:pea). $(^{15}NH_4)_2SO_4$ solution at. $99.8\;atom%^{15}N$ was applied to the each pot at the rate of $2kg\;N\;ha^{-1}$. Application was done on 6 April at rye+vetch pots and remainder were applied on April 16. Forage were harvested from each pot at ground level in heading stage and separated into legume and grass. Total N content and $^{15}N$ value were determined using a continuous flow stable isotope ratio mass spectrometry. DM yield of rye+vetch, Italian+crimson and oat+pea were 6,607, 3,213 and 4,312 kg/ha, respectively. Proportion of N from fixation was 0.73(rye+vetch), 0.42(Italian+crimson) and 0.93(oat+pea). The percentages of N transfer from legume to grass were from 61% to 24% in different method by treatment and -35% to 21% in isotope dilution method.

• Korean Journal of Cognitive Science
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• v.26 no.1
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• pp.53-67
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• 2015

Metacognitive monitoring refers to high dimensional cognitive activities. Understanding one's own cognitive processes accurately can make effective controls for their performance. Brain area related with metacognition is PFC which is completed the order of late and it can be inferred that monitoring abilities is developing during late adolescent. In this study, we explored the developmental difference in monitoring accuracy between high school students and college students using by measuring JOL(Judgment of Learning). Participants was asked that they study Spanish-Korean word pairs and judge their future performance of memory. In the result, people in both groups thought that they could remember word pairs better than their actual performance. Absolute bias scores which mean the degree to predict their performance apart from true scores showed the interaction between subject groups and task difficulty. Specifically, people judged their learning state quite accurately in easy task condition. However, in difficult task condition, both groups showed inaccuracy for predicting their learning and the magnitude of the degree was bigger in the group of high school students.

• Korean Journal of Soil Science and Fertilizer
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• v.27 no.4
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• pp.284-289
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• 1994

A nutrient solution culture experiment was conducted in the greenhouse of Suwon Campus, Kyung-Hee University from May 23 to July 11, 1994, to determine the effects of phosphorus application on seedling growth of Kwanganok and Hwengsungok cultivars of corn. Plants were harvested at weekly interval for seven weeks, at which time plant height, leaf area and dry matter yield of corn seedling were measured. The major results obtained are as follows. In without phosphorus pot, seedlings of Kwanganok and Hwengsungok cultivars have hardly been growing from planting to harvesting time. Plant height, leaf area and dry matter yield of both cultivars were increased more in the seedlings grown under complete treatment compared with the other phosphorus treatments. The total plant height, leaf area and dry matter yield during the whole period of Kwanganok and Hwengsungok cultivars were decreased in order of C>2P>3P>-P application pot. The crop growth rates of seedlings of both cultivars with in all treatments were slow until the 4th week after planting. Kwanganok with 2P and 3P treatment pot and C pot of Hwengsungok reached the maximum CGR at the 5th to 6th week after planting and showed declined CGR's thereafter, but Kwanganok C and Hwengsungok 2P treatment pots maintained a steady increase in CGR's until the end of the experiment period.

• Korean Journal of Agricultural Science
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• v.9 no.2
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• pp.556-561
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• 1982

These studies were carried out to investigate the freshness and bacterial counts of ultrahigh- temperature sterilized market milk which were treated and distributed in three districts; Cheonan, Pyungtak and Suwon in Korea, and to elucidate theirs keeping qualities when stored in refregerator and at room temperature. And the results were obtained were as follows; 1. The acidities in milk from three plants after stored at $5^{\circ}C$ were retained 0.16% up to 6 weeks and 0.18% up to 10 weeks. And negative reactions were appeared for alcohol and boiling tests also up to 10 weeks. 2. After milk were stored at $25^{\circ}C$, the acidities were 0.18% up to 9 weeks and also negative reaction were appeared for both alcohol and boiling tests up to 9 weeks. 3. When milk were stored at $5^{\circ}C$, no thermoduric and coliform bacteria were detected from all samples. And the total viable number of organisms and the number of psychrophilic bacteria were $<10/m{\ell}$ for 5, 6, 7 and 10 weeks respectively. 4. Also thermoduric and coliform bacteria were not detected after milk were stored at $25^{\circ}C$ for 10 weeks. And the total viable number of organisms and the number of psychrophilic bacteria were $<10/m{\ell}$ after from 2 weeks to 10 weeks.

• Journal of Korean Society of Forest Science
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• v.83 no.3
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• pp.391-399
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• 1994

This study was carried out to investigate the water storage charateristics of surface soil by different forest floor conditions and to measure water storage capacity of forest Land at the Yeungnam University forest in Yongjang-ri, Nenam-myoen, Kyongju-gun, Kyongsangbuk-do. The study was conducted for 4 months, from June to September, 1993. The results were summarized as follows ; 1. Infiltration capacity of surface soil for each. forest floor condition was in the order : Oak forest>Oak forest removed $A_o$ layer>Pine forest removed $A_o$ layer>Pine forest>Bare land>Grasses. 2. The absolute values of infiltration capacity were increased as the rain intensity increased, while the order of infiltration capacity for each floor condition was not changed. 3. Infiltration capacity was highly correlated with surface soil hardness and todal pores. 4. Infiltration formula based on the Horton's could be estimated at each forest floor condition. 5. The model for water storage capacity of forest land expressed by infiltration capacity was estimated using total pores and soil hardness. This study indicates water storage capacity of different forest floor conditions depends on infiltration capacity. Using these formula, it was possible to calculate and estimate water storage capacity of forest land. Therefore, the result of this study will be helpful to increase water storage capacity of forest land and to manage water resources effectively.

• Korean Journal of Agricultural Science
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• v.37 no.2
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• pp.285-293
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• 2010

To secure instream flow at the Yudeung urban stream reach of Daejeon city in South Korea, Yudeung upstream diversion was designed with total water storage of $59{\times}10^4m^3$, and the upstream Seongol reservoir was planned to raise the bank with various sizes. Downstream streamflows were simulated by considering outflows from upstream diversion and reservoir, and after then flow durations were analyzed and compared with flows of no reservoir condition. In case of no diversion or reservoir upstream, flow durations were $1^{st}$ flow of $84.72m^3/s$, $95^{th}$ flow of $2.10m^3/s$, $185^{th}$ flow of $0.92m^3/s$, $275^{th}$ flow of $0.42m^3/s$, and $355^{th}$ flow of $0.31m^3/s$. In case of upstream diversion, flow durations were $1^{st}$ flow of $94.38m^3/s$, $95^{th}$ flow of $2.96m^3/s$, $185^{th}$ flow of $1.22m^3/s$, $275^{th}$ flow of $0.50m^3/s$, and $355^{th}$ flow of $0.35m^3/s$. The increase flow rates were $0.04m^3/s$ in $355^{th}$ flow, $0.08m^3/s$ in $275^{th}$, and $0.30m^3/s$ in 185th. In case of Seongol reservoir with effective storage capacities of $365{\times}10^4m^3$, $544{\times}10^4m^3$, $750{\times}10^4m^3$, and $992{\times}10^4m^3$, flow durations were $85.5{\sim}83.9m^3/s$ on $1^{st}$ flow, $2.85{\sim}2.57m^3/s$ on $95^{th}$ flow, $1.16{\sim}1.27m^3/s$ on $185^{th}$ flow, $0.64{\sim}0.99m^3/s$ on $275^{th}$ flow, and $0.56{\sim}0.94m^3/s$ on $355^{th}$ flow. The increase flow rates were $0.25{\sim}0.63m^3/s$ in $355^{th}$ flow, $0.22{\sim}0.57m^3/s$ in $275^{th}$, and $0.24{\sim}0.35m^3/s$ in $185^{th}$. The more the sizes of upstream reservoirs increased, the $1^{st}$ and $95^{th}$ flows decreased in which coefficients of determination were 0.92, 0.99, respectively and the $185^{th}$, $275^{th}$, and $355^{th}$ flows increased in which coefficients of determination were 0.93 to 0.99.

• Journal of the Korean Society of Child Welfare
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• no.56
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• pp.69-99
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• 2016

Taking the perspective of children's welfare, this study aimed at critically analyzing the system of notification disposition which institutionalized children have experienced. Notification disposition is a juvenile justice process that, when a child (10 th 18 years old ) has been delinquent or is at risk for delinquency, is initiated without investigation or prosecution procedures by direct notification to a judge from the caregivers, school principals, chief probation officers, or directors of child care institutions. The data used in the analysis included case records of probation offices, and court sentencing documents of juvenile protective dispositions. Results showed that notification cases were initiated by directors of child shelters/care institutions. The most common reasons of notification were theft, runaway, physical violence, drinking, and smoking. Furthermore, there were more controversial reasons, such as "bad influence on another institutionalized children", "showing no remorse", "no sense of guilt"and "challenge of rearing in institutions" Based on the results, we discussed three problematic aspects of the direct notification system by directors of childcare institutions : (1) too much reliance on the judicature judgment of juvenile court; (2) less stability of the judicial status of notified children, and (3) inadequacies of the notifying eligibility for directors of child care institutions.

• Korean Journal of Soil Science and Fertilizer
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• v.28 no.2
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• pp.145-153
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• 1995

Effects of lime application levels(0, 10, 50, 100, and 300kg/10a) on three alfalfa cultivars(Dekalb brand 120, Pike, Pioneer brand 5929) were analyaed with respect to the growth, dry matter yield, and inorganic composition of the plants at three cutting periods. Major chemical properties of the soils were also analyzed. Response of the plant height to the lime application level was variable among the cultivars, showing the order of 50>100>300>10>0kg/10a in Dekalb brand 120, 50>100>10>300>0kg/10a in Pike, and 10>50>300>0>100kg/10a in Pioneer brand 5929. The order of dry matter yield response to the lime application level was 50>300>100>10>0kg/10a in Dekalb brand 120, 50>10>300>100>0kg/10a in Pike, and 50>100>10>0>300kg/10a in Pioneer brand 5929. Total dry matter yields at 50kg/10a lime application level were higher than those at any other levels in all the cultivars. Neither a specific pattern nor a significant change in inorganic composition of the plant was found for the lime application levels and cutting times, Soil chemical properties and composition remained with little change after the experiment except the soil pH, which was increased with the lime application level.