제 10 회 한문교육과 학술답사보고서

이종식 근역한문학회 1984 漢文學論集 Vol.2 No.-

Establishment of GHGs Emission Reduction Evaluation Methodology on Land Use Change of Paddy Field from Rice to Upland Crop Cultivation

이종식,김건엽,최은정,이선일,김아란,정동균,박현규,이길재 한국토양비료학회 2019 한국토양비료학회지 Vol.52 No.4

This study was conducted to evaluate the effect of GHGs emission reduction with land use change of paddy field. For this we developed the evaluation methodology to calculate the GHGs emission reduction from land. At first, procedure of ETS (emission trading system) methodology on land use change of paddy field was developed. Second, system boundary for each land use was defined. Finally, evaluation methodology on GHGs emission reduction was established. The amounts of GHGs emission reduction on land use change of paddy field was evaluated as difference between baseline emission (BE) and project emission (PE). The system boundary of BE were ① CH4 emission from anaerobic decomposition of organic material in rice field (BECH4), ② N2O emission from N fertilizer application (BEN2O), and ③ CO2 emission from farming machine use (BECO2). Those of PE were ① N2O emission from N fertilizer application (PEN2O) and ② CO2 emission from farming machine use (PECO2). At the evaluation on PE, methan emission was excluded, which was generated usually at anaerobic condition of paddy. Emission amounts of each gas was converted as carbon dioxide with multiplying global warming potential (GWP).

A Case Study to Estimate the Greenhouse-Gas Mitigation Potential on Rice Production System in Farming without Agricultural Chemicals

이종식,유종희,정현철,최은정,김건엽 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.5

To estimate greenhouse gas (GHG) emission, the inventory of rice cultivation at the farming withoutagricultural chemicals was established from farmers in Gunsan, Jeonbuk province in 2011∼2012. Theobjectives of this study were to calculate carbon footprint and analyse the major factor of GHGs. To do this, wecarried out a sensitivity analysis using the analyzed main factors of GHGs and estimated the mitigationpotential of GHGs. Also we suggested agricultural methods to reduce GHGs that can be appled by farmers atthis region. At the farming system without agricultural chemicals, carbon footprint of rice production unit of1 kg was 2.15 kg CO2.-eq. kg-1. Although the amount of carbon dioxide (CO2) emission was the largest amongGHGs, methane (CH4) emission had the highest contribution to carbon footprint on rice production systemwhen it was converted to carbon dioxide equivalent (CO2-eq.) multiplied by the global warming potential(GWP). Main source of CO2 emission in the rice farming system without agricultural chemicals wascombustion of fossil fuels used by agricultural machinery. Most of the CH4 was emitted during rice cultivationpractice and its major emission factor was flooded paddy field in anaerobic condition. Also, most of the N2Owas emitted from rice cultivation process. Major sources of the N2O emission was application of fertilizer suchas compound fertilizer. As a result of sensitivity analysis in energy consumption, diesel had the highestsensitivity among the energy inputs. With the reduction of diesel consumption by 10%, it was estimated thatCO2 potential reduction was about 2.0%. With reducing application rate of compound fertilizer by 10%, thepotential reduction was calculated that CO2 and N2O could be reduced by 0.5% and 0.9%, respectively. At thecondition of 10% reduction of silicate and compost, CO2 and CH4 could be reduced by 1.5% and 1.6%,respectively. With 8 days more drainage than the ordinary practice, CH4 emission could be reduced by about4.5%. Drainage and diesel consumption were the main sources having the largest effect on the GHG reductionat the farming system without agricultural chemicals. Based on the above results, we suggest that no-tillageand midsummer drainage could be a method to decrease GHG emissions from rice production system.

Assessment of NH₄⁺ and Ca²⁺ on Acidity Neutralization of Rainwater in Ansung Area

이종식,주민,박백균,Lee, Jong Sik,Min, Zhu,Park, Baeg-Gyoon 한국토양비료학회 2000 한국토양비료학회지 Vol.33 No.5

우리나라 강우의 pH 분포와 산성도 중화에 미치는 $NH_4{^+}$ 및 $Ca^{2+}$ 영향을 평가하기 위하여 1993, 1994, 1995, 1997 및 1998년 각각 5월부터 10월까지 6개월 동안 안성지역에 내린 강우의 주요 이온들의 함량을 조사한 결과, 강우의 산성도 분포는 pH 5.0~5.6의 범위가 가장 많았으며 pH 5.6 이상의 강우는 연차적으로 점차 감소하는 경향이었다. 빗물중 $SO_4{^2-}$와 $NO_3{^-}$의 당량비는 1994년 이후 점차 증가하여 빗물중에 함유된 음이온중 $SO_4{^2-}$가 차지하는 비중이 점차 높아졌다. $[H^+]+[NH_4{^+}]+[Ca^{2+}]$의 역대수 값으로 계산되는 이론적 산성도는 측정된 pH값에 비해 5.0~12.6배 높았고 대기중에 존재하는 알카리 물질들에 의한 빗물의 월별 중화력은 강우량이 많은 7월과 8월에 가장 적었다. 또한 빗물의 산성도 중화에는 $NH_4{^+}$가 $Ca^{2+}$ 보다 기여도가 컸으며, 두 이온에 의한 빗물의 중화는 점차 감소하는 경향을 나타냈다. This study was carried out to assess the neutralization ability of $NH_4{^+}$ and $Ca^{2+}$ on the acidity of rainwater in Korea. The rainwater was collected in Ansung area for six months from May to October in 1993, 1994, 1995, 1997, and 1998, respectively. Rainwater were analyzed for chemical composition and their theoretical pH values were calculated. As for the results, the distribution rates of rain at the pH 5.0~5.6 range were high. The equivalent ratio of $SO_4{^2-}/NO_3{^-}$ was decreased since 1994. Theoretical acidity which was calculated by-$log([H^+]+[NH_4{^+}]+[Ca^{2+}])$ was 5.0~12.6 times higher than measured acidity in Ansung area each monitoring year. The monthly difference between measured pH and theoretical pH was lower in July and August than any other month. $NH_4{^+}$ contributed more to the neutralization of rainwater acidity than $Ca^{2+}$. And the neutralization ratio of rainwater acidity by these two ions decreased during the years from 91.8% in 1993 to 88.7% in 1998.

보행자 전용 휴대전화 시티폰(CT-2) 서비스 기술동향

이종식 한국정보통신기술협회 1995 TTA저널 Vol.41 No.-

농업부문 기후변화 대응을 위한 주요 국제기구 동향

이종식,최은정 한국농촌경제연구원 2017 세계농업 Vol.199 No.-

WiBro 펨토셀 기술

이종식,이성춘,이상홍 한국컴퓨터통신연구회 2009 OSIA Standards & Technology Review Vol.34 No.1

NGO와 인적교류의 세계화에 관한 연구

이종식 한국비영리학회 2003 한국비영리학회 학술대회 Vol.- No.-

한국의 전통적 거버넌스의 시원적 모델: 虎溪 李乙奎의 革新政治의 假說과 實踐 모델

이종식 한국NGO학회 2006 NGO연구 Vol.4 No.2

한국정치사상에서 지배자와 피지배자 사이에서 공통으로 문제를 해결해 보고자 시도한 자생적 공치와 협치의 정치형태인 거버넌스 유형을 찾고자 한다. 이러한 목적에서 한국 정치의 전통적 거버넌스의 자생적 요소로서 그리고 또한 민주주의적 시원으로서 이조 초기의 군신공치제도에서의 양자 간의 거버넌스를 살펴 보았다. 그 결과 전통적 평화 사상은 홍익인간의 이념을 실천하는 한국의 전통적 민간신앙 속에 뿌리 내리고 있는 분별의 정치 와 가림의 정치 속에서 치자와 피치자 사이의 공치를 찾을 수 있었다. 이러한 한 거버넌스의 실천적 모델로서 혁신정치 가설을 세우고 이를 정치현장에 적용한 한 젊은 학자 호계 이을규에게서 그 같은 시원적 모델을 발견하게 되었다. 호계의 정치개혁의 가설은 賢良政治를 목표로 하여 賢君政治와 賢臣政 治를 정치개혁의 메카니즘으로 하고 있다. 그의 현량정치의 구체적 실현방 법으로 현명한 군주와 현명한 신하가 공동으로 합작해서 민의를 만들어 내는 정치이다. 그러한 그가 현실정치에 작동시키고 있는 실천 방법론은 廉公 勤敏의 정신이다.

자가치아이식술의 장기적인 임상적 평가

이종식,박진우,서조영,이재목,Lee, Jong-Sik,Park, Jin-Woo,Suh, Jo-Young,Lee, Jae-Mok 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.2

Purpose: Many clinical studies have reported that higher success rates are achieved with teeth that have immature roots than other autotransplanted teeth that have more immature root. However, based on date published recently, the success rate of autotransplantation of teeth with complete root formation was higher. The purpose of this study was to examine the long term(2 to 6 years follow-up) success rate of autotransplantation of third molar with complete root formation and to discuss some conditions and prerequisites for success. Materials and Methods: 26 sites of 24 patients aged 26 to 55 (mean age 40.8) were autotransplanted with third molars with complete root formation. These cases were followed for 2 to 6 years after surgery. The success criteria included (1) no discomfort during functioning (2) absence of progressive root resorption and alveolar bone resorption. Result: Of 26 teeth 5 teeth were failed, therefore success rate is 81%(21/26 teeth). The results suggested that higher success rate is acquired from (1) extraction socket due to dental caries (2) mandibular recipient site (3) patient younger than 40 years old. Autotransplantation of third molar to replace molars with advanced periodontal disease also showed considerably high success rate(84%). Conclusion: With appropriate case selection, autotransplantation of third molar with complete root formation remains a viable alternative for replacing a missing molar tooth.