방향족 탄화수소, 케톤 및 에스테르류 화합물의 물질농도와 희석배수의 상관관계 연구

한진석,한진석,공부주,김선태 한국도시환경학회 2018 한국도시환경학회지 Vol.18 No.3

This study was aimed to evaluate the relationship between the concentration and dilution factor (ratio) using the Air Dilution Olfactory Method, which is suggested in the Standard Method of Odor Compounds, by measuring dilution factor for m-xylene, toluene, methyl ethyl ketone, methyl isobutyl ketone, and butyl acetate. For the measurement, 18 panelists were selected by several criteria through panel test. Panelists chosen for their closely similar sensitivities provide more reproducible values. The estimation showed that the correlation of the concentration with dilution factor for the 5 compounds including the m-xylene, toluene, methyl ethyl ketone, methyl isobutyl ketone, and butyl acetate can be reasonably expressed by the equation log C = AflogD + F (Af : material costant, F : constant). The result of this study is suggested to be used as a base data for research on measures to improve the regulation standards for complex odor concentration on site boundary in operation, as well as a correlation between the concentration and dilution factor for the designated foul odor substances, and their characteristics. 본 연구에서는 현재 악취공정시험방법에서 제시하고 있는 공기희석관능법에 의한 희석배수와 지정악취물질중 m-자일렌과 톨루엔, 2종의 케톤류, 뷰틸아세테이트, 총 5종의 각 개별적 물질농도와의 관계를 살펴보고자 개별적 물질농도에 대한 희석배수를 측정하였고 물질농도와 희석배수간의 상관관계 특성 및 관계식을 산출하여 제시하였다. 지정악취물질농도와 희석배수의 상관관계는 log C = AflogD + F (Af : 물질별상수, F : 상수)에 의해 적합하게 표현되었으며, 각 물질의물질별 상수값을 제시하였다. 또한 총 12개의 지정악취물질농도와 희석배수의 상관관계식을 이용하여 부지경계선에서배출허용기준으로 규정하는 희석배수 기타지역 15, 공업지역 20 에 해당하는 개별물질별 물질농도를 산정하여 제시하였다. 희석배수를 기반으로 계산한 농도와 현행물질별 기준농도를 비교한 결과, 12가지 물질중 암모니아의 농도 기준치는낮게 설정되어 있으며, 황화수소와 뷰틸알데하이드, 트리메틸아민의 경우는 기준치가 약간 높게 설정된 것으로 추정된다.본 연구결과는 현재 적용되고 있는 부지경계선에서의 복합악취 농도 규제기준에 대한 개선방안 및 지정악취물질들의 물질농도, 희석배수간의 관계 및 특성연구 등의 기초 자료로 사용될 수 있을 것으로 판단된다.

한국의 10개 지정악취물질 배출허용농도기준 개선안에 관한 연구 - 방향족 탄화수소, 에스테르, 지방산 화합물, 케톤류 및 아이소뷰틸 알코올을 중심으로-

한진석,한진석,한상우,이춘상,김경찬,김영진 한국도시환경학회 2019 한국도시환경학회지 Vol.19 No.4

This study examines the adequacy of odor intensity, dilution factor for complex odors, linkage of substance concentrations of designated odor substances, and adequacy of emission limits for aromatic hydrocarbons and esters compounds, ketone, 4 fatty acids and isobutyl alcohol. In addition, this study proposed a proposal to improve the standard value of individual material standard. The correlation and adequacy of mutual reference values were examined using the correlation between odor intensity, material standard, dilution factor. 15 and 20 of dilution factor are enhanced levels compared to 2.5 and 3.0, which are the odor intensity standards. Butyl acetate is a weakened standard, with a large change in substance level and stronger than dilution factor. Propionic acid and Butyric acid were found to be the most potent concentration levels. From the correlation equation, the substance concentration corresponding to the basic standard of odor intensity was calculated, and it was partially different from the current substance concentration standard. In order to examine the adequacy of the proposed standards, the odor intensity was calculated for the semi-industrial and industrial areas using the relationship between the material standard and the dilution factor, and almost all substances had odor intensity of 2.5 and 3.0. 본 연구에서는 지정악취물질중 방향족 탄화수소, 케톤류 및 에스테르, 4개의 지방산과 아이소부틸알콜, 총 10 종에 대하여 악취관리 수단으로 사용하는 악취강도, 복합악취에 대한 희석배수, 지정악취물질의 물질농도 기준간의 연계성 및 배출허용기준의 적정성을 검토하고, 개별 물질농도의 기준치 개선(안)을 제안하고 자 하였다. 악취강도와 물질농도, 희석배수, 그리고 물질농도와 희석배수간의 상관관계식을 이용하여 상호 기준치의 연계성과 적정성을 검토하였다. 일반적인 악취강도의 규제 기준치인 2.5와 3.0에 비해 희석배수 15와 20은 강화된 수준이며, 물질 기준인 경우는 변화폭이 크고 희석배수보다 더욱 강화된 수준으로 뷰틸아세테이트는 약화 기준치이며, 프로피온산과 뷰틸릭산은 가장 강화된 물질 농도수준인 것으로 나타났다. 상관관계식으로부터 악취강도의 기본 기준치에 해당하는 물질농도를 산출하였으며, 현 악취방지법에 기준 되어진 물질농도와는 일부 다르게 나타났다. 제안되어진 기준들의 적정성 검토를 위하여 희석배수와 물질농도의 관계식을 이용한 검토와 결과 값을 통해 준공업지역과 공업지역에 대해 악취강도를 산출한 결과 거의 모든 물질이2.5와 3.0의 악취강도를 갖는 것으로 나타났다.

Empirical Evaluation on the Efficiency of the Trucking Industry in Korea

한진석,성홍모,박민철,고승영,김동규 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.4

It is a matter of common knowledge that the trucking industry has an important role in strengthening national competitiveness. Recently, in most countries, the trucking industry has faced the task of enhancing its efficiency. To achieve this, a detailed and objective assessment method for the efficiency of current trucking companies is required. This study suggests a network Data Envelopment Analysis (DEA) model for evaluating the efficiency of the trucking industry in Korea. The model was formulated by combining a network DEA model with a modified version of the Banker, Charnes, and Cooper (BCC) model. The proposed model can evaluate the management efficiency of the trucking industry by considering operation and profitability efficiencies sequentially. The model also considers both desirable and undesirable outputs, so it provides more information that can be used to evaluate the efficiency of the trucking industry than dose the traditional DEA model. The Korean trucking industry’s efficiency was analyzed using the model developed in this study. The results show that the large truck companies that use trucks of maximum loading capacities that exceed five tons have the highest efficiency and that the factors that have significant influence on efficiency are service performance, the number of transaction steps, and daily labor hours. The proposed model can contribute to the efficiency evaluation of the trucking industry and help the trucking companies direct their efforts more effectively.

The End of Something 의 해석

한진석 한국현대언어학회 1989 언어연구 Vol.6 No.1

Size Distribution Characteristics of Particulate Massand Ion Components at Gosan, Korea from 2002 to 2003

한진석,이석조,김정은,김영준,문광주 한국대기환경학회 2005 한국대기환경학회지 Vol.21 No.E1

Size distribution of particulate water-soluble ion components was measured at Gosan, Korea using amicro-orice uniform deposit impactor(MOUDI). Sulfate, ammonium, and nitrate showed peaks in threep1.8m).One peak was observed in the condensation mode(0.218~ 0.532m), and the other peak was obtained inthe droplet mode(0.532~ 1.8m). Considering the fact that the equivalent ratios of ammonium to sulfateranged from 0.5 to 1.0 in these size ranges, it is inferred that they formed sufficiently neutralizedcompounds such as (NH4)2SO4 and (NH4)3H(SO4)2 during the long-range transport of anthropogenicpollutants. On the other hand, nitrate was distributed mainly in the coarse mode (3.1~ 6.2m) combinedwith soil and sea salt.centrations of criteria air pollutants were relatively high, but the other represented relatively clean airquality. The concentrations of sulfate and ammonium particles in droplet mode were the highest in winterand the lowest in summer. When the air quality was bad, the increase of nitrate was observed in thecondensation mode (0.218~ 0.282m). It thus suggests that the nitrate particles were produced throughthe high temperature and relative humidity.

함축(Implicature)에 대하여

韓鎭錫 大田大學校 1982 論文集 Vol.1 No.1

I have analised the literary sense and indirect force of utterance according to Gricean Maxims and Searle's Indirect Speech Act. Grice explained the relationship between what is said and what is implicated in terms of cooperative principles. Implicature can be derived from the utterance with the help of reasonable cooperative maxims and background knowledge in the contexts. Searle's indrirect illocutionary act makes much progress in explaining the human communication principles. In Searle's theory, the role of politeness is acknowledged, but he hasn't systematised it. Searle's indirect speech act seems to maintain Gricean cooperative principles, but it isn't cooperative in the maxim of quality and maxim of manner. When the maxim of politeness is to be added, it will be cooperative. The explanation of implicature about the literary sense and speech act effect can be made in terms of speech act, cooperative principles, background knowledge of context, inference and politeness.

대형 승합차 유해대기오염물질 배출특성 연구

한진석,전준민,황성철,전문수,차준표,한상우,이춘상,서석준,김선문 한국대기환경학회 2020 한국대기환경학회 학술대회논문집 Vol.2020 No.10

충전인프라 입지 선정을 위한 화물자동차 통행발생모형 추정 연구

한진석 한국산학기술학회 2024 한국산학기술학회논문지 Vol.25 No.2

The need to distribute zero-emission vehicles is increasing worldwide to reduce greenhouse gas and fine dust emissions. This study seeks to make data for selecting a location for charging infrastructure for commercial trucks by analyzing the traffic characteristics of commercial trucks that emit many pollutants. For this purpose, this study modeled the characteristics of how truck traffic is generated based on the ordered logit model. The model estimation results showed that logistics center B has the most significant impact in terms of origin and destination type, followed by sales facilities, residential facilities, others, and logistics center C. In addition, the type of origination and destination had a greater impact than the characteristics of the initial origination point, with the level of impact varying depending on the business type of trucking and the ton ratings of commercial trucks, resulting in differences in the traffic volume of trucks depending on the origin and destination and the characteristics of the initial origin point. The places with high traffic volumes of trucks examined in this study should also be considered when selecting the optimal locations of zero-emission truck charging infrastructure. Nevertheless, more studies will be needed to understand the various factors that affect how truck traffic is generated beyond the variables examined in this study.

이산선택모형을 이용한 최적경로 탐색 알고리즘

한진석,전경수 한국ITS학회 2004 한국ITS학회 학술대회 Vol.2004 No.1

문학담화의 해석 : The Killers 를 중심으로

한진석 한국현대영어영문학회 1988 현대영어영문학 Vol.30 No.1