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이춘수,정용기 한국무역보험학회 2023 무역금융보험연구 Vol.24 No.6
본 연구의 목적은 대표적인 비시장 변수인 외교정책의 유사성 효과를 포함한 추가적인 변수와데이터의 확장을 통하여 기존 수행된 연구와의 차별화를 시도하였다. 즉, 교역 대상국과의 외교정책의 유사성이 양 국간 전략물자의 교역규모에 미치는 효과를 검증하였다. 본 연구의 연구 방법은 과거 20년간 전략물자의 교역데이터를 기반으로, 경제적인 변수인GDP, 거리변수, 비시장 변수인 군사 동맹, 외교정책의 유사성 여부가 양 국간 교역규모에 미치는 효과를 중력이론을 활용하여 실증분석 하였다. 본 연구의 결과는 교역 대상국의 경제 규모는 우리와의 전략물자 무역에 긍정적인 영향을 주는 반면 지리적 거리는 수입에 부정적인 영향을 주는 것으로 나타났다. 본 연구의 결론은 본 연구 결과를 실무적 관점에서 전략물자관리원과 연계하여, 기업과 정책이 유기적으로 연계되도록 활용할 수 있는 성과확산에 기여할 것이다. dditional variables and data, including the similarity effect of foreign policy, a representative non-market variable. In other words, the effect of similar foreign policies with trading partners on the trade volume of strategic materials between the two countries was verified. Research design, data, methodology : Based on the trade data of strategic materials over the past 20 years, this study's research method used gravity theory to empirically analyze the effects of economic variables such as GDP and distance, also non-market variables such like military alliances and foreign policies on the trade volume between the two countries. Results : The results of this study show that the economic size of trading partners has a positive (+) effect on trade in strategic materials with us, while geographic distance has a negative impact on imports. Conclusions : The conclusion of this study will contribute to the spread of performance that can be used to organically link companies and policies by linking the results of this study with the KOSTI (Korean Security Agency of Trade and Industry) from a practical point of view.
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주요기상인자(主要氣象因子)가 벼의 질소시비량(窒素施肥量)에 미치는 영향(影響)
이춘수,곽한강,황기성,박준규,Lee, Choon-Soo,Kwak, Han-Kang,Hwang, Ki-Sung,Park, Jun-Kyu 한국토양비료학회 1987 한국토양비료학회지 Vol.20 No.1
An analysis was made on optimal N fertilizer for high yielding and ordinary rice varieties and their dependence upon the climatic conditions during growth stage in 1971-1979. The results obtained were summarized as follows; 1. The coefficient of variation for optimum N rates were 19.1% for high yielding varieties and 21.9% for ordinary varieties. And the those of yields at optimum N levels were 7.0% for high yielding varieties and 9.9% for ordinary varieties. 2. Optimum N fertilizer rates for high yielding varieties were 22.4kg/10a in favorable climatic years and 16.1kg/10a in unfavorable climatic years. As for ordinary varieties, optimum N levels were 19.2kg/10a in favorable climatic years and 13.0kg/10a in unfavorable climatic years. Accordingly, more N should be applied in favorable climatic years regardless of varieties. 3. This difference was derived from sunshine hours, rainfall, and relative humidity. Optimum N rates were correlated positively with sunshine hours, and negatively with rainfall and relative humidity. 1971~'79년(年) 사이 7개년간(個年間) 다수계(多收系)와 일반계(一般系) 벼품종(品種)을 공시(供試)하여 실시(實施)한 질소(窒素) 시비량성적(施肥量成績)과 벼생육기간(生育期間)의 주요기상요인(主要氣象要因)인 일조시간(日照時間), 강수량(降水量), 평균기온(平均氣溫) 및 상대(相對) 습도(濕度)와의 관계(關係)를 검토(檢討)한 결과(結果), 이를 요약(要約) 하면 다음과 같다. 1. 년차간(年次間) 질소시비량(窒素施肥量)의 변이계수(變異係數)는 다수계(多收系) 품종(品種) 19.1%, 일반계품종(一般系品種) 21.9% 이었으며 질소적량구(窒素適量區) 수량(收量)의 변이계수(變異係數)는 다수계품종(多收系品種) 7.0%, 일반계품종(一般系品種) 9.9% 이었다. 2. 질소(窒素)는 기상호적년도(氣象好適年度)의 경우 평균시비량(平均施肥量)(다수계품종(多收系品種)) 18.8kg/10a, 일반계품종(一般系品種) 15.6kg/10a)에 비(比)하여 17~23% 증비(增肥)하고, 기상불량(氣象不良)인 년도(年度)는 14~17% 감량시용(減量施用)이 합리적(合理的) 이었다. 3. 질소시비량(窒素施肥量)과 주요기상요인(主要氣象要因)과의 관계(關係)에서 일조시간(日照時間)(7~9월(月))과는 유의(有意)한 정상관(正相關), 강수량(降水量)(7~9(月)) 및 상대습도(相對濕度)(8~9월(月))와는 유의(有意)한 부(負)의 상관(相關)을 보였으나 평균온도(平均溫度)와는 뚜렷한 관계(關係)가 없었다.
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이춘수,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-
This study was performed for water quality management of Yonggi Lake Park in Changwon City. The results are as follows; The water quality of the lake was deteriorated during summer season because of algal blooming. It was estimated that existing treatment capacity of the lake water was not sufficient to meet the target lake water quality. And so the lake water circulation period, 40 days should be shorten to below 30 days by increasing the treatment capacity. Fountain and air supply facilities for 02 supply and mixing caused rather resuspension of solid settled at the bottom of the lake. It was also evident that the extended detention of water in the lake resulted in water quality deterioration. Consequently it is important to supply high quality water from other sources. Especially lower temperature water had better effect on improvement of the water quality.
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이춘수,Yeo Sam Yoon,Jae Kwang Shim,임현경 대한마취통증의학회 2013 Korean Journal of Anesthesiology Vol.65 No.6
Although compressed gas (CO2) blowers have been used safely to aid accurate grafting during off-pump coronary bypass surgery, hemodynamic collapse due to gas embolism into the right coronary artery may occur. Supportive measures to facilitate gas clearance by increasing the coronary perfusion pressure have been reported to be successful in restoring hemodynamic stability. However, right ventricular dysfunction and atrioventricular nodal ischemia may hinder effective systemic delivery of the vasoactive medications, even when performing resuscitative measures such as direct cardiac massage. We herein report a case of cardiac arrest that was caused by a right coronary gas embolism and that could not be restored by cardiac resuscitation. When supportive measures fail, direct aortic injection of epinephrine to increase the coronary perfusion pressure can be attempted before initiating cardiopulmonary bypass, and this approach may be life-saving in situations that limit systemic drug delivery from the venous side despite the performance of direct cardiac massage.
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