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정승우,김영주,김재훈,황상일,Jeong, Seung-Woo,Kim, Young-Ju,Kim, Jae-Hoon,Hwang, Sang-Il 한국지하수토양환경학회 2011 지하수토양환경 Vol.16 No.6
This study developed preliminary assessment methodology for priority listing of soil and groundwater contamination sources, considering source characteristics, local environments and risk receptors. Source characteristics were evaluated by scoring relative risk of contamination sources. Local environments were evaluated by scoring annual rainfall, hydraulic conductivity of aquifer, and annual groundwater use. Risk receptors were evaluated by scoring local population, direct distance to surface water, direct distance to drinking-water wells. Scores of each parameter were allocated by analysing distribution of parameter values obtained from government databases. Distributed scores of source characteristics local environments: risk receptors were 12 : 12 : 12. The preliminary assessment scored 0 to 36 for each soil and groundwater sources. Inventory of soil and groundwater sources consisted of 7 categories. This study applied the preliminary assessment methodology to Manan-Gu, Anyang City, Korea. The number of car repair and washing facility was the largest in the contamination source inventory. Petroleum storage facilities showed the highest assessment score. The preliminary assessment methodology also indicated that Anyang-Dong was the priority section among Anyang-Dong, Suksu-Dong, Bakdal-Dong. This study is the first trial for relative ranking soil and groundwater contamination sources by considering source and local characteristics. Therefore, further researches and revision of the preliminary assessment methodology need to be pursued for various applications.
정승우,안윤주,Jeong, Seung-Woo,An, Youn-Joo 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.1
토양위해성평가를 위한 토양조사방법의 목적은 오염정도와 범위를 파악하여 부지의 대표적인 토양노출농도를 결정해야 하는 것은 물론이고 부지의 물리화학적 특성을 조사하여 노출평가시 사용될 수 있는 주요 정보를 제공하는데 있다. 앞으로 우리나라도 토양위해성평가를 위한 토양조사시 두 가지 점을 고려해야 할 것으로 나타났다. 첫째, 현재 우리나라의 토양조사는 오염정도와 범위 확인을 위한 조사에 국한하고 있으므로 차후 위해성평가를 위해서는 부지의 물리화학적 특성파악을 위한 조사가 추가되어야 한다. 둘째, 국내와 외국의 토양조사방법에 있어 가장 큰 차이는 외국의 현장조사계획에서는 모든 데이터에 대해 통계학적 개념을 반영하여 시료채취 개수 결정 및 오염여부 판단에 신뢰성을 확보하고 있다는 점으로 우리도 이에 대한 보완이 필요할 것으로 판단된다. 본 연구에서는 토양위해성평가를 위한 토양조사방법을 별도로 마련하는 것보다 기존 토양정밀조사지침과 연계하여 토양위해성평가의 목적을 이룰 수 있는 토양조사방안을 제안하였다. The objectives of soil investigation in risk assessment of contaminated sites are to characterize the level and area of contamination, and provide the important physical and chemical properties of contaminated sites for later exposure assessment. This study suggests two soil investigation strategies to be considered in the soil risk assessment in Korea. First, soil investigation for characterizing soil properties is additionally required to the current investigation method that has focused on chemical analysis. Second, application of statistical concepts to soil investigation plan and soil data analysis are required for confidential decison-making on contamination and determining the exposure soil concentration. This study provides a practical soil investigation strategy to involve the current Korean soil analysis guidance with the minimum sample number required for satisfying statistical limits.
선형마이크로폰 어레이를 이용한 저격수 거리추정 개선방법과 실험 분석
정승우,Jung, Seungwoo 한국군사과학기술학회 2018 한국군사과학기술학회지 Vol.21 No.4
If a hidden enemy is shooting, there is a threat against soldiers in recent conflicts. This paper aims to improve the localization of a muzzle using microphone array. Gunshot noise can provide information about the location of muzzle with two signals, the muzzle blast from the gun barrel and the projectile sound from the bullet. Two signals arrive to the microphone array with different arrival time and angle. If the arrival angles of the two signals are estimated, distance between sniper location and the microphone array can be calculated by using geometric principles. This method was established in 2003 by Pare. But this method has a limitation that it cannot calculate the distance when the arrival angles of the two signals are same. Also it has an error when the angle difference of arrival is small. In order to overcome this limitation, a new method is proposed that uses the change of characteristic of the projectile sound with respect to vertical distance from the trajectory. The proposed method estimates the distance correctly when the arrival angle of two signals are same, and when the angle difference between two signals is increased, the estimation error increases with respect to the angle. Therefore these two methods can be selected according to the angle difference between two signals to estimate the distance of the muzzle. Below the threshold of the angle difference, the proposed method can be used to estimate distance with smaller error than the existing method. This was demonstrated by shooting tests using actual sniper rifles.
바울의 신학언어에 나타난 1세기 그레코-로만 사회의 다문화 정황
정승우 국제언어인문학회 2010 인문언어 Vol.12 No.2
The Multicultural Situation of the Greco-Roman World Reflected on Paul's Theological Languages Sung-Woo Chung (Yonsei University) The purpose of this paper is to explore the multicultural characteristics of the Greco-Roman world reflected on Paul's theological language in his authentic letters, especially Romans and 1 Corinthians. According to accounts of Acts, he was not only a Diaspora Jew but also a Roman citizen. He grew up in Tarsus, a Greek-Hellenistic city in the eastern part of Asia Minor. He wrote his letters in koine Greek. It means that Paul was deeply influenced by the Greco-Roman multculturalism. In this regards, it is not strange that he often used the Greco-Roman rhetorical technique to stress his theological argument for his gentile audiences. In the letter to the Romans, Paul employs Diatribe which is a dialogical form of teaching by means of question and answer with students. In Romans 2:1-5, Paul dialogues with an imaginary interlocutor by using diatribal format. Like cynic philosopher, Paul carries on a dialogue with himself, posing rhetorical questions that he then answers in order to get at the issue of God's judgment. Meanwhile, Paul's use of the athlete imagery in his letters echoes the themes and values of his contemporary culture. He employs the language and symbolism of the Panhellenic games, especially Isthmian games which were held near Corinth every two years in honor of Poseidon, god of the sea. In 1 Cor 9:24-27 Paul clearly uses foot-race-in-a-stadium metaphor to describe faithful life as a contest. He says that every athlete must exercise self control in all respects. He also employs boxing metaphor to encourage his audiences. For Paul, the purpose of the metaphor in the multicultural context of the Greco-Roman world is to call the Pauline Christians to exercise of faith in self-control(ἐγκράτεια), an athletic self-denial(αὐτάρχεια) of privilege and rights. During his time, Paul tried to adapt the Greco-Roman culture in order to communicate his theological argument within the Pauline Christians who has a different cultural background. He also makes an effort to break the social barrier between the Jewish and Gentile Christians of Pauline community. Paul emotionally describes this effort as followers: “I have made myself a slave to all, so that I might win more of them. To the Jews I became as a Jew, in order to win Jews...To those outside the law I became as one outside law so that I might win those outside the law...I do it all for the sake of the gospel, so that I may share in its blessings.”(1 Cor. 9:19-23)
정승우,허이레,김태훈,주선미,유정완,이승준,조유지,박성언,전경녀,김호철 고신대학교(의대) 고신대학교 의과대학 학술지 2021 고신대학교 의과대학 학술지 Vol.36 No.2
Objectives: Rasmussen’s aneurysm may cause life-threatening hemoptysis. We investigated the clinical characteristics and outcomes of patients with hemoptysis and Rasmussen’s aneurysm. Methods: We retrospectively investigated patients who clinically presented with hemoptysis and were diagnosed with a Rasmussen’s aneurysm on spiral chest computed tomography (CT). Results: Our study included 16 patients (men:women, 12:4; mean age, 65.25 ± 13.0 years). Massive hemoptysis was observed in nine patients (56%) and blood-tinged sputum in four patients (25%). Ten patients (62.5%) had a history of pulmonary tuberculosis, and three patients (18.7%) had underlying lung cancer. Chest CT revealed coexisting fungal balls in seven patients (43.7%). Bronchial artery embolization (BAE) was performed in 12 patients (75%). One patient died of uncontrolled massive hemoptysis. Conclusions: Patients with Rasmussen’s aneurysm showed hemoptysis during the course of the disease; however, bleeding can be controlled with conservative therapy and radiological interventions, such as BAE.