• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2007.10a
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• pp.177-183
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• 2007

최근 증가하고 있는 자연재해 중 지진의 피해는 전체의 재해에서 차지하는 비중은 상대적으로 적지만, 빈도와 강도가 증가하고 있으며, 대응하기 위한 예측 체계가 거의 없다는 것이 어려운 점이다. 일본의 후쿠오카 지진 이후 내진설계 기준이 강화되고 있으나 실제지진발생시 최대가속도의 크기와 전파속도에 대한 이론적인 연구는 있었지만 국가적 차원의 자료 구축은 거의 없었다. 2005년 이후 소방방재청에서 지진대책사업단이 구성된 이후, 각 기관에 산재된 GIS 자료를 수집하여, 지진반응에 맞는 자료로 가공하고 프로그램으로 구현하게 되었다. anyguide 라는 지리정보도시 시스템과 Java 어플리케이션으로 구성된 프로그램을 통하여 과거의 지진자료와 측정지점에 대한 정보를 구축하였으며, 실제 지진발생 시에 지자체에서 대응할 수 있는 경보시스템을 동시에 구축하였다. 2007년 2월에 발생한 평창 주변의 지진발생시 시스템이 작동하여 3초내에 실제 shake map과 20초 이내에 hazard map이 작성되었으며, 실제 인명과 가옥 파괴 비율을 검증할 수 있었다. 2007년 말부터 2차 피해예측 추이 부분이 추가되어 보다 종합적인 대응시스템이 될 것으로 예상된다.

• Environmental and Resource Economics Review
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• v.18 no.3
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• pp.393-430
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• 2009

This study uses a computable partial-equilibrium model of the U.S. energy industry to evaluate sulfur dioxide concentrations under two environmental policies. The policies, generator-level emission caps and tradable allowances, are selected to yield identical aggregate emissions. Regional concentrations are found to vary across the two policies significantly. These variations translate into different losses for individual states, and, nationwide, to differences of hundreds of millions of dollars in aggregate health damages. Emission caps outperform allowances by $452 million. Caps favor the southwestern, south-central and southeastern states, where they deliver $840 million lower damages than the other policies, while they deliver $390 million higher damages In northern and northeastern states.

• Journal of Convergence for Information Technology
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• v.11 no.1
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• pp.199-207
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• 2021

This study was attempted to understand the effect of the violence victim experience of Korean adolescents on smoking using the data of the 15th (2019) online youth health behavior survey. The subjects of this study were 57,303 people, and the data were analyzed using the SPSS / Win 26.0 program for frequency analysis of complex samples, cross sample analysis (Rao-Scott ��2 test), and logistic regression analysis of complex samples. The main result was 12.7% of the smoking subjects. Those who smoked were significantly more 9.6% and 22.0%, respectively, compared to those who had no more than 1 or 2 times of violence. Smoking of Korean adolescents adjusted for gender, grade, academic record, economic status, drinking, family living, and usual stress increased the odds ratio for smoking by 1.66 times when the degree of violence damage experience increased by 1 unit. As a result of the above, as the degree of violence victimization of adolescents increases, the likelihood of smoking increases. Therefore, it is necessary to multidisciplinary convergence effort to the prevention and management of violence of adolescents, and to reduce the smoking of adolescents.

• Korean journal of applied entomology
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• v.45 no.3 s.144
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• pp.317-325
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• 2006

According to the preceding survey on insect pests of the green perilla, Perilla frutescens var. japonica HARA, The major pests were Aphis egomae Shinji, Pyrausta panopealis (Walker), Tetranychus urticae Koch, Polyphagotarsonemus lotus Banks, Tetranychus kanzawai Kishida at Guemsan, Chungnam, 2004. Aphis egomae causes nearly 100% injury of the green perilla in uncontrolled green houses. A field study was conducted to estimate economic injury levels (EILs) and control thresholds (CTs) for A. egomae injuring green perilla in green houses. Different densities of A. egomae ranged from 1 to 80 aphids per 100 plants in early inoculation. The mean injurying rate of plant was 2.4% to 40.5% at the end of June at differently inoculated levels. The economic loss time calculated by the ratio of cost managing aphid to market price (C/V) (C: cost managing aphid, V: Market price) in early season (from May to 13. June) was 5.8% and in peak season (from 13. June to 30. June) was 9.3%. Economic injury level in early and peak season was 5.3 aphids per plant and economic injury levels in peak season were 0.6 aphids per plant and 7.6% injured rate of plant. The control thresholds calculated by 80% level of economic injury level in peak season were 0.5aphids per plant and 6.1% injury rate of plant, respectively.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.1
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• pp.94-99
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• 1983

This experiment was conducted to study a cause of lodging on culm internode. The rice varieties were undergone on injuries by typo on 'Agnes' on Jeonbug Provincial in 1981 year. Long-culmed varieties had extreme lodging injury but short-culmed varieties were not serious. The lodging had weaken tolerance when culm internode was long, weight of internode per unit length was light, and culm diameter and culm wall were thin. The breaking weight of internode was light in lodging rice field. The internode length and the weight of internode per unit length between the breaking weight of internode had significant correlation. Lodging had high tolerance when the total nitrogen was low, phosphate, silica, cellulose and starch contents were high in internode. The difference of culm length and the weight of internode per unit length was high relationship with lodging.h lodging.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.22-22
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• 2019

최근 전 세계적으로 급증하는 기후변화의 영향으로 인해 강우량 증가에 따른 이상홍수 발생 및 댐 여유고 부족 등 다양한 위험인자가 노출되고 있다. 이러한 예상치 못한 이상홍수는 실제 거주하고 있는 사람들을 위협할 수 있으며, 하천 범람으로 인해 2차 3차 피해가 일어날 가능성이 존재하고 있다. 이에 다양한 자연재해로부터 인명 및 재산 피해를 방지 및 저감하기 위한 목적으로 다양한 수공구조물이 존재하며, 수자원 관리계획 수립의 목적에 따라 다양한 강수량이 활용되고 있다. 특히, 지구온난화에 따른 기후변화 영향을 고려한 연최대 강수량 및 확률강수량 산정이 필요한 시점이며, 온도변화에 따른 증기압 계산식인 Clausius-Clapeyron 관계에 따르면 대기 온도가 $1^{\circ}C$ 상승할 때 대기수분량이 6~7% 증가하여 평균 온도상승에 따라 극치강수량 발생 잠재력이 향상 될 것으로 전망되고 있다. 본 연구에서는 온도상승에 따른 극치강수량의 변화를 베이지안 다중분위회귀분석모형을 통해 산정하여 CORDEX 온도자료 기반의 미래 극치강수량을 전망하였다. 본 연구결과 100년 이상 빈도의 강수량은 온도상승에 따라 급격히 증가하는 추세를 확인하였으며, 2100년까지 온도상승을 고려한 최대 극치강수량은 1500mm를 넘을 가능성을 확인하였다.

• Journal of KSNVE
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• v.2 no.2
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• pp.92-95
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• 1992

자동차에 사용되는 경음기는 자동차들 사이뿐만 아니라 특히 보행자에게 경적음을 발생하여 사고를 사전에 방지하기 위하여 사용되는 자동차의 필수 부품 이다. 일반적으로 경음기는 2가지 특성에 의해 특정지워 질 수 있는데 이는 음압과 주파수(음색) 특성이다. 이들 모두는 규격에 의하여 제한되는 요소들로서, 전자의 경우 너무 소리가 적게되면 경음기로서의 기능을 상실하게 되며 지나치게 크게 되면 상대방 및 주위에 지나치게 크게 피해를 주게 되는 요소이다. 후자의 경우 동일한 크기의 음압이라도 그것을 구성하는 특성에 따라 인간에게 주어지는 소음에 의한 심리적 영향이 달라지게 되므로 불쾌음의 발생을 지양해야 한다. 이 글에서는 같은 음의 세기라도 상대적으로 부드러운 음색을 갖는 셸(shell)형 경음기의 특성 및 개발 결과에 대하여 언급하고자 한다.

• Survey Research
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• v.18 no.2
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• pp.67-98
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• 2017

The purposes of this study are to identify the latent classes of school violence depending on bullying and victimized experience by type and the influences of individual-level and school-level variables on determining these latent profiles. For these research goals, the present study utilized data from the Seoul Education Longitudinal Study(SELS) 5th wave, containing data from 2,195 middle school students who experienced school violences more than once. Multilevel latent profile models were applied to examine school violence among students. Our results indicated that there were four latent classes; high-level bullying and victimized group (1.7%), mainly bullying group(2.1%), mainly victimized group(3.7%), verbal bullying and victimized group(92.5%). Gender, resilience, self-control, peer relationship, parental relationship were significant determinants of the latent profiles at student level. Teacher-student relationships, school violence prevention, gender ratio of school were significant determinants of the latent profiles at school level. The present study contributed to extending theoretical discussions by classifying students into groups based on frequency and different forms of bullying and victimization. Moreover, this study examined determinants of student and school level simultaneously by dealing with multilevel data.

• Journal of Korean Society of Forest Science
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• v.81 no.1
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• pp.30-39
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• 1992

Artificial acid rain(pH2.0, 3.0, 4.0 and 5.0) was treated on the seeded pots of 4 species to examine its effects on germination, leaf injury and seedling growth. Aluminum ammonium sulfate solution (0.5, 1.0 and 2.5mM) and artificial acid rain (pH3.0, 4.0 and 5.0) were treated on the seeded germinators of 3 species to examine its effects on germination and radicle growth. Artificial acid rain was prepared by diluting sulfuric acid with ground water and ground water(pH6.5) was used as control. Artificial acid rain was sprayed to seeded pots three times per week. About 5mm of artificial acid rain was treated each time from early April to early October, 1991. Germination, seedling establishment, radicle growth, leaf injury and seedling growth were measured and compared among the treatments. The results were summarized as follows 1. Germination, seedling establishment rate of Pinus densiflora were highest on the pH5.0 pot whereas those of Ailanthus altissima was highest on the control pot, and those of Magnolia sieboldii showed the highest value on the pH3.0 pot. 2. The differences in seedling height of Pinus densiflora and Pinus rigida were significant among the treatment levels of acid rain, whereas those of Magnolia sieboldii and Ailanthus altissima were not significant. Seedling heights of Pinus densiflora and Pinus rigida were highest on the pH3.0 pot, and that of Magnolia sieboldii was highest on the pH4.0 pot, and that of Ailanthus altissima was highest on the control pot. 3. Seedling dry weights of Pinus densiflora. Pinus rigida, and Ailanthus altissima differed significantly among the treatments, but that of Magnolia sieboldii did not differ. Highest seedling dry weights of Magnolia sieboldii and Ailanthus altissima were observed on the pH4.0 pot, and that of Pinus densiflora was observed on the pH3.0 pot, and that of Pinus rigida was observed on the pH5.0 pot. 4. With decrease of pH value of artificial acid rain, the number of injured needle and injured individual tended to be increased. 5. The differences in effects of soil acidity were highly significant among the treatments for all species. 6. Radicle growth of Pinus densiflora differed significantly among pH levels and aluminum concentrations.

• Korean Journal of Social Welfare Studies
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• v.42 no.4
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• pp.217-238
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• 2011

This study aims to investigate the effects of active coping of spouses on recidivism of domestic violence. In order to obtain better study results, 21-month follow up interview was conducted for spouses of batterers who completed domestic violence batterer intervention program. Spouses were interviewed for three times; 9-month, 15-month, and 21-month after program completion. Finally, data till 15-month follow-up was used to manage sample size problem. As a results, a total number of 76 spouses were included for final analysis. Data was collected from 2008 to 2009. Based on sample size and study objects, PLS(Partial Least Square) analysis was used. the prevalence rates of emotional abuse was 77.6% at the first interview but 41.3% at the second interview. For physical violence each rate were 43.1% and 18.4%. For emotional violence, problem-solving strategy among active coping shows significant moderating effects on reducing emotional violence(p<.001) while help-seeking among active coping has significant effects on decrease physical violence(p<.01).