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이철환,김장환,Lee, Cheolhwan,Kim, Janghwan 한국기록학회 2023 기록학연구 Vol.- No.77
In the Republic of Korea, which has adopted a strong president-centered system as a political system, comprehensive personnel verification of work ability, reputation, and misconduct for positions where the president has personnel rights is not only fundamental to the administration of the country, but is also very important for maintaining the democratic system. As the records containing the personnel verification process produced during this process also has a wide range of data on important people in the country, they themselves are very important national-level information, and there is a great possibility that they will be used as useful materials for studying current national management in future generations. Therefore, it is assumed that after the enactment of the "Act on the Management of Presidential Records" in 2007, Senior Secretary for Civil Affairs of the Office of the President, which were responsible for the personnel verification, designated a wide range of personnel verification records as presidential designated records and transferred them to the Presidential Archives. However, with the launch of the 20th government, the agency responsible for personnel verification changed from Senior Secretary for Civil Affairs of the Office of the President to the "Personnel Information Management Team" of the Ministry of Justice from June 2022, a major change occurred in the personnel verification process that had been maintained and the preservation of related records. This paper examined what personnel verification records are and how they have been preserved and managed, and proposed what issues have arisen at the record management level due to this change in the agency in charge of personnel verification, and how those issues should be resolved on a practical and institutional level.
압축착화 엔진에서 JP-8의 연소 및 배기 특성에 관한 연구
이정연(Jungyeon Lee),이정우(Jeongwoo Lee),이승현(Seunghyun Lee),김동수(Dongsu Kim),이승하(Seungha Lee),이철환(Cheolhwan Lee),민경덕(Kyoungdoug Min),최회명(Hoimyung Choi) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
In 1998, Single Fuel Concept was adopted by NATO nations for the purpose of using one fuel for the land based military aircrafts, vehicles and equipment. The reason behind such a decision was not because of management and logistic benefits. This decision was also for smooth engine operation in the battlefield. JP-8 which is kerosene type turbine fuel and containing several additives for the military purpose was selected as the single fuel. JP-8 is originally used in the combat aircrafts, but it can also be used in CI engines, as its basic characteristics are similar to that of a diesel fuel. Although there have been a lot of experiments and studies on the use of JP-8 on CI engines, more research on the JP-8 combustion on CI engine is required for a better understanding about of the combustion process and preventing air pollution. Thus, this present study attempts to find out the optimal operation conditions that have a similar or better engine performance and lower exhaust emissions compared to the conditions of diesel fuel combustion. This study evaluates the effects injection timing, injection pressure, boost pressure, EGR rates, and engine load on a four-cylinder CI engine containing JP-8 with displacement volume of 2.2L