미국 희곡 속에 나타난 자살의 문제 - 아서 밀러의 극을 중심으로

이상혁 한국중앙영어영문학회 2015 영어영문학연구 Vol.57 No.3

The purpose of this paper is to interpret the essence of suicide, which is the unknown for we cannot experience it, through the various aspects of suicide depicted in literature, such as in Miller’s plays. Although suicide has been considered a subject of fear and taboo throughout most of history, literature, which is often referred to as a mirror of human history, has seriously dealt with suicide as a form of death, the eternal enigma of human existence, even during the periods when suicide was not permitted. As a result, suicide currently has become one of the most prominent interests in literature. Though suicide in literature is fictional, it embraces various mechanisms of actual suicide and symbolically represents existential problems originating from the agony of the period, irregularities and corruption in our society, and frustration and despair due to damage to an individual’s value and dignity. Therefore, we can indirectly understand the cause, process, and effect of suicide in the real world. Many cases of suicide are introduced particularly in Miller’s plays. Through such cases, he charges the individual, the people around him, and the society with responsibility for one’s ruin caused by the alienation, one of the social ills in a modern materialistic civil society.

머신러닝을 이용한 초미세먼지와 질소산화물 농도 특성분석 연구

이상혁,이종원,김문경,박기수,박희문 한국도로학회 2020 한국도로학회논문집 Vol.22 No.4

PURPOSES : This study analyzes the characteristics of generated fine particulate matter (PM2.5) and nitrogen oxide (NOX) at roadsides using a statistical method, namely, a generalized linear model (GLM). The study also investigates the applicability and capability of a machine learning methods such as a generalized regression neural network (GRNN) for predicting PM2.5 and NOX generations. METHODS : To analyze the characteristics of PM2.5 and NOX generations at roadsides, data acquisition was conducted in a specific segment of roads, and PM2.5 and NOX prediction models were estimated using GLM. In addition, to investigate the applicability and capability of a machine learning methods, PM2.5 and NOX prediction models were estimated using a GRNN and were compared with models employing previously estimated GLMs using r-square, mean absolute deviation (MAD), mean absolute percentage error (MAPE), and root mean square error (RMSE) as parameters. RESULTS : Results revealed that relative humidity, wind speed, and traffic volume were significant for both PM2.5 and NOX prediction models based on estimated models from a GLM. In addition, to compare the applicability and capability of the GLM and GRNN models (i.e., PM2.5 and NOX prediction models), the GRNN model of PM2.5 and NOX prediction was found to yield better statistical significance for r-square, MAD, MAPE, and RMSE as compared with the same parameters used in the GLM. CONCLUSIONS : Analytical results indicated that a higher relative humidity and traffic volume could lead to higher PM2.5 and NOX concentrations. By contrast, lower wind speed could affect higher PM2.5 and NOX concentrations at roadsides. In addition, based on a comparison of two statistical methods (i.e., GLM and GRNN models used to estimate PM2.5 and NOX), GRNN model yielded better statistical significance as compared with GLM.

『正音發達史』(1946)에 제시된 『訓民正音』<해례>(1446)의 번역과 분석에 대하여 :<해례>의 주해와 평해를 중심으로

이상혁 고려대학교 한국언어문화학술확산연구소 2019 Journal of Korean Culture Vol.46 No.-

In Korean language studies, the value of Hong Gimun's work has never been fully appreciate. It was partly because he chose North Korea in 1948 and, for another reason, he was rarely considered a Korean language researcher. However, he was the person who first tried translating Hunminjeongeum (『訓民正音』) in Korean language. And, he was a Korean researcher who wrote a renowned book called 『正音發達史』. This paper aims at providing new perspectives for the revised evaluation and empirical analysis of his text. In this paper, the historical context of Hong Gimun's translation of Hyerye (解例) in Hunminjeongeum is discussed in three aspects. First, this paper will present, explaining the translation structure of Hyerye (解例), through 『正音發達史』, which is evaluated as his excellent work in this article. Second, more focus is put on Hyerye (解例) including six parts, so called Jejahae(制字解), Choseonghae(初聲解), Jungseonghae(中聲解), Jongseonghae(終聲解), Haojahae(合字解), Yongjarye(用字例) described in 『正音發達史』. It is successfully found that Hong Gimun was without doubt original with his incisive analysis and interpretation. Therefore, it is no exaggeration to say that Hong Gimun showed enough linguistic significance of the terminology that he used in his text. After all, this paper is a micro review of the research of Hon Gimun until 1948 that has seldom dealt with in Korean linguistics fields. Thus, this paper is to re-evaluate the linguistic issues focusing on Hyerye (解例) in Hunminjeongeum, discussing his works from the perspectives of Korean linguistics history. 이 논문에서는 홍기문의 저서 『正音發達史』(1946) 상권에 전재된 『訓民正音』<解例>의 번역, 주해, 평해의 주요한 내용을 살펴보고, 홍기문의 훈민정음 번역과 그 연구의 특징을 탐색하였다. 전체 <해례> 내용을 모두 살펴보는 것은 방대한 작업이기 때문에 이 논문에서는 첫째로 『正音發達史』를 통해 그 텍스트에 드러난 <해례>의 번역 구조를 살펴보고, 둘째로 『正音發達史』 상권에 전재된 <해례>의 제자해, 초성해, 중성해, 종성해, 합자해, 용자례에서 주목할 만한 번역과 그에 대한 홍기문의 주해와 평해에 대한 분석과 비평의 국어학적 의미를 살펴보았다. 『正音發達史』(1946)에 전재된 『訓民正音』 번역, 주해, 평해는 『訓民正音』에 대한 최초의 해설서로서 역사적으로 평가받아야 한다. 제자해, 초성해, 중성해, 종성해, 합자해의 주해 및 평해를 통해서 홍기문식 훈민정음 학술용어들을 다수 확인하였으며, 특히 주해에서 중국 사료 문헌의 전거(典據) 제시는 주목할 만하다. 그와 아울러 평해를 통해서 홍기문은 『訓民正音』<解例>를 이해하는 그의 독특한 관점을 제시하였다. 이러한 홍기문만의 용어의 설정은 『訓民正音』 원본이 발견된 이후에 처음으로 이루어진 소중한 성과였다. 또한 국어사 연구에서 각 시대별 어휘 대응을 통해 어휘 변천의 흐름을 조망한《용자례》의 주해와 평해는 국어사에서 의미 있는 초창기 연구 성과로 판단된다.

통계적 방법을 이용한 복층 저소음포장의 소음저감효과 분석

이상혁,한대석,유인균,이수형 한국도로학회 2017 한국도로학회논문집 Vol.19 No.6

PURPOSES : The purpose of this study is to compare noise reduction quantities between before/after two-layer low noise pavement implementation using equivalent noise level analysis and to analyze the noise reduction effects of the two layer low noise pavement with a statistical method such as the Anderson-Darling Test.METHODS: In order to compare and to analyze noise reduction effects between before/after two-layer low noise pavement implementation, data acquisition as noise levels on a roadside and an apartment rooftop was conducted in the study area. The equivalent noise level was estimated in order to compare noise reduction quantities and the Anderson-Darling Test was carried out for estimating noise reduction effects of the two-layer low noise pavement.RESULTS: The equivalent noise levels of before/after two-layer low noise pavement implementation for the roadside during the daytime are 65.355 dB and 63.520 dB and during the nighttime are 62.463 dB and 59.088 dB. The equivalent noise levels for the apartment rooftop during daytime are 57.301 dB and 59.088 dB and during the nighttime are 54.616 dB and 52.464 dB. Also two-layer low noise pavement decreased the noise reduction effects estimated with the statistical method as the Anderson-Darling test for the roadside during the daytime by around 66.68% and decreased noise reduction effects on the roadside during the nighttime by 0.70%. Moreover it reduced noise reduction effects in the apartment rooftop during the daytime and nighttime by 0% and 96.32%, respectively.CONCLUSIONS : Based on the result of this study, two-layer low noise pavement can positively affect noise reduction during both the daytime and nighttime according to the results of estimating the equivalent noise levels and the Anderson-Darling test.

Short-term maintenance on a high-sucrose diet alleviates aging-induced sleep fragmentation in drosophila

이상혁,김은영 한국통합생물학회 2021 Animal cells and systems Vol.25 No.6

Sleep is a fundamental behavior in an animal’s life influenced by many internal and external factors, such as aging and diet. Critically, poor sleep quality places people at risk of serious medical conditions. Because aging impairs quality of sleep, measures to improve sleep quality for elderly people are needed. Given that diet can influence many aspects of sleep, we investigated whether a high-sucrose diet (HSD) affected aging-induced sleep fragmentation using the fruit fly, Drosophila melanogaster. Drosophila is a valuable model for studying sleep due to its genetic tractability and many similarities with mammalian sleep. Total sleep duration, sleep bout numbers (SBN), and average sleep bout length (ABL) were compared between young and old flies on a normal sucrose diet (NSD) or HSD. On the NSD, old flies slept slightly more and showed increased SBN and reduced ABL, indicating increased sleep fragmentation. Short-term maintenance of flies in HSD (up to 8 days), but not long-term maintenance (up to 35 days), suppressed aging-induced sleep fragmentation. Our study provides meaningful strategies for preventing the deterioration of sleep quality in the elderly.

우수한 전기화학적 성능을 갖는 팬던트 단위체 유무에 따른 폴리(아릴렌 이써)기반 음이온 교환막의 연구

이상혁,박민우,유동진 한국에너지학회 2021 한국에너지공학회 학술발표회 Vol.2021 No.11

윌리엄즈 극에 나타난 욕망의 파괴성

이상혁 한국중앙영어영문학회 2009 영어영문학연구 Vol.51 No.3

Tennessee Williams was a short story writer until he became interested in writing plays at the age of twenty-four. When he seriously began to write plays, he reused plots, characters, and ideas that he had already dealt with in short story form. In fact, almost all of his major plays grew more and less directly out of his short stories. “Desire and the Black Masseur” is an appropriate story to explore his plays because it conveys very graphically and grotesquely the basic attitude, that sexual desire is a terribly destructive force, which is at the root of most of Williams’ works. In Summer and Smoke, the fires of desire inside her destroy Alma mentally and physically. Her descent into promiscuity at the end of the play shows how real this destruction has been. In A Streetcar Named Desire, desire as her husband’s homosexuality was responsible for Blanche losing Allan, which loss drove her into the behavior that finally destroyed her. For Blanche, desire in the form of promiscuity has brought about the loss of her teaching position, her respectability, her self-respect, her ideals, and desire in the form of Stanley has caused her to lose Stella, Mitch and finally even her sanity. The destruction that desire brought to Alma and Blanche warns us that there is in store for them the terrible suffering which finally makes their lives intolerable.

국도포장 자산관리를 위한 의사결정시스템 개발

이상혁,도명식,권수안,김용주 한국도로학회 2013 한국도로학회 학술대회 발표논문 초록집 Vol.2013 No.09

현재, 국도 포장관리시스템(PMS; Pavement Management System)에서 HDM(Highway Development and Management)-4를 이용하여 예산 분석 및 보수우선순위 검토, 경제성 분석을 시행하고 있다. 하지만 분석에 필요한 입력 자료가 우리나라 현실에 맞지 않고, 공용성 모형의 보정이 어려우며 또한 분석결과의 신뢰성 등에 의문이 제기되면서 국내현실에 적합한 의사결정시스템의 개발이 필요하게 되었다. 본 연구에서 개발된 국도 포장관리시스템(PMS)의 의사결정지원시스템의 구성요소 크게 1)도로포장상태의 공용성 모형, 2) 도로포장상태에 따른 차량속도변화 추이모형, 3)경제성 평가시스템으로 구성되어져 있다. 먼저, 공용성 모형이란 포장의 파손과정에 대한 해석을 다루는 내용으로 유지보수가 요구되기까지의 기대수명과 그 기대수명 내에서의 파손특성의 변화과정을 표현하는 것으로 정의할 수 있으며, 본 연구에 서 공용성 모형은 균열, 소성변형, 종단평탄성에 대한 년간의 파손량을 함수로 모형화하였다. 또한, 도로포장상태에 따른 차량속도변화 추이모형은 국도의 유지보수 전·후 “포장상태-차량속도”자료 를 모형화하였다. 마지막으로 경제성 평가 시스템은 관리자 및 이용자 비용의 산정과 우선순위 선정기법으로 구성되었는데, 본 시스템에서의 관리자 비용은 유지보수 비용으로 한정하여 산정하였다. 이용자비용은 국토교통부의 ‘교통시설 투자 평가지침’을 기준으로 도로편익비용 항목 중 1)통행시간비용, 2)차량운행비용, 3) 대기오염 비용, 4)온실가스비용, 5)소음비용을 기준으로 산정하였다. 우선순위선정법으로는 연등가법(EUAC; Equivalent Uniform Annual Cost), NPV(Net Present Value)법과 비용효율성법(Cost-effectiveness Method)을 활용하여 우선순위를 산정하였다. 본 연구에서 개발한 의사결정시스템은 마이크로 소프트 엑셀(Microsoft Excel)의 VBA(Visual Basic Application)를 기반으로 이용자의 보다 쉬운 이해와 활용, 확인 및 보정/수정이 가능하도록 설계되었다. 분석시스템은 활용목적에 따라 “프로젝트 레벨”과 “네트워크 레벨”로 구성(그림 1. 참조)하였으며, 주요 기능으로는 1) 유지관리비 산정 및 예측, 2) 유지보수 대상구간의 우선순위 결정, 3) 유지보수시기(지연) 에 따른 도로관리자 및 이용자비용의 변화추세 예측, 4) 경제성지표 도출 등이 있다.

이석주교수정년기념특집 : 국어학 ; 국어학사를 다시 생각함 - 정의, 방법, 범위의 문제를 중심으로 -

이상혁 한성대학교 한성어문학회 2007 漢城語文學 Vol.26 No.-

유동성위험 주석의 정보유용성

이상혁,유용근 한국회계학회 2023 회계학연구 Vol.48 No.1

This paper examines whether the liquidity risk disclosure in accordance with K-IFRS 1107 provides useful information to investors. Specifically, this paper examines the relationship between the amount of liquidity risk, measured as the difference in contractual cash flows and carrying amounts of financial liabilities in the maturity analysis disclosed in the liquidity risk disclosure, and the cost of capital which is a measure of the firm’s risk. Using samples listed on the KOSPI market from 2011 to 2018, the results show a significant positive relationship between the amount of liquidity risk and the cost of capital. This results indicate that liquidity risk disclosure provides useful information to investor. On the other hand, this positive relationship appears when the level of information asymmetry is high, indicating that the information content depends on the firm’s financial reporting environment. Further analyses show that a significant positive relationship between the amount of liquidity risk and the cost of capital for firms with a small amount of information provided in the capital market or with high cost of debt. The contributions of this paper are as follows: First, to our knowledge, this is the first empirical study to examine the information content of quantitative information about liquidity risk disclosure. Second, through the results that liquidity risk disclosure provides useful information to investors, this paper provides the policy implication for the regulators that more accurate liquidity risk information should be provided to investors through best practices. 본 논문은 한국채택국제회계기준 제1107호에 따라 공시되는 항목 중 유동성위험 주석이 투자자들에게 유용한 추가 정보를 제공하는지 분석한다. 구체적으로, 유동성위험 주석 중 만기분석에 포함된 계약상 현금흐름과 장부금액의 차이를 유동성위험 금액으로 정의하고, 기업의 위험 측정치인 자기자본비용과의 관계를 분석하여 정보유용성을 검증한다. 한국채택국제회계기준이 도입된 2011년부터2018년까지 한국거래소 유가증권시장에 상장된 표본을 이용하여 분석한 결과, 유동성위험 금액과 자기자본비용 간 유의한 양(+)의관계를 보임으로써 유동성위험 주석이 투자자들에게 유용한 추가 정보를 제공하는 것으로 나타난다. 한편, 이러한 양(+)의 관계는정보비대칭 정도가 높은 경우에 나타나고 있어, 기업의 재무보고 환경에 따라 정보유용성이 달라지는 것을 보여준다. 추가분석에서는정보의 양적 측면과 기업의 부채조달비용 측면에서 정보유용성에 차이가 나는지 분석하였으며, 분석결과, 자본시장에 제공된 정보의양이 적거나 부채조달비용이 높은 기업에서 유동성위험 금액과 자기자본비용 간 양(+)의 관계를 제시한다. 본 논문의 공헌점은 다음과같다. 첫째, 선행연구에서 다루지 않았던 유동성위험 주석의 양적 정보에 대한 정보유용성을 검증하였다. 둘째, 유동성위험 주석이투자자들에게 유용한 추가 정보를 제공한다는 결과를 통해, 주석공시 모범사례 등을 통해 유동성위험에 대한 정확한 정보를 투자자들에게 제공할 수 있도록 해야 한다는 정책적 시사점을 제시하였다.