• The Journal of Korean Medical History
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• v.12 no.2
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• pp.147-167
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• 1999

1. 연구 목적 한국의학사(韓國醫學史)의 한 분야인 식품사(食品史) 및 약물사(藥物史)는 미개척분야라 해도 과언은 아닐 정도로 연구 업적이 부족하다. 특히 식물명칭에 대한 정리는 기초학문이지만 방치되어진 것도 부인할 수 없다. 따라서 본고는 식품문화사(食品文化史)를 정리하는 과정중의 일환으로 고추의 어원(語源)을 중심으로 살펴보고자 한다. 이는 식품사(食品史) 연구에 도움이 되는 동시에 체질식이요법을 강조하는 사상의학(四象醫學)의 식품 분류에 대한 학술적 근거를 제시하는 계기로 삼고자 한다. 1493년 콜럼버스에 의해 알려진 고추는 우리 나라에 들어와 천초(川椒)대신 사용됨으로서 현재 중요한 양념이 되었다. 이에 고추의 도입과정과 호칭변화를 살펴봄으로서 현재 사전류에서 잘못 서술되고 있는 것을 시정하고, 고추가 도입된 이래 우리가 어떻게 이해하고 응용하였는 지에 대하여 문헌고찰을 통하여 의학사적(醫學史的) 입장으로 정리하는 것이 본 연구의 목적이다. 2. 연구 방법 "산림경제(山林經濟)"(1715), "임원경제지(林園經濟志)"(1827)같은 농서(農書), "물명고(物名考)"(1830), "오주연문장전산고(五洲衍文長箋散稿)"(1850) 같은 유서(類書), "훈몽자회(訓蒙字會)"(1527), "신증유합(新增類合)"(1574)같은 사전류, "지봉유설(芝峰類說)"(1614), "성호사설(星湖僿說)"(1763)같은 문집류, "흠정수시통고(欽定授時通考)"(1737), "본초강목습유(本草綱目拾遺)"(1765)같은 중국본초서(中國本草書) 등과 국내의서 등 을 통하여 고추에 대한 문헌정리를 시도하였다. 3. 연구 결과 고추가 도입된 이래 남만초(南蠻椒), 남초(南椒), 번초(番椒), 왜초(倭椒), 왜고초(倭苦椒), 왜개자(倭芥子), 고초(苦椒), 랄가(辣茄), 고쵸, 등으로 표기되어 왔다. 하지만 고추가 도입되기 전에 출간된 "구급간이방(救急簡易方)"(1489)에 '초(椒) 고쵸, 죠피'라는 기록이 나온다. 이는 천초(川椒)(초피나무)를 의미하는 '고쵸'로 보아야 한다. 후에 고추가 도입됨에 따라 의미가 변하여 고추를 의미하게 되는데 이를 정리하면 다음과 같다. 첫째, 현존하는 문헌 중 고추에 대한 최고기록인 "지봉유설(芝峰類說)"(1614)에 근거하여 고추(남만초(南蠻椒))는 임진왜란때 일본에서 도입되었다는 것이 정설이었다. 하지만 임진왜란 이전에 일본을 통하여 고추가 도입되었고 이의 개량종을 오히려 임진왜란때 일본으로 전해주었을 가능성이 높다. 둘째, 현재 대부분의 사전류에서 "훈몽자회(訓蒙字會)"(1527)의 '고쵸 쵸(초(椒))'를 고추에 대한 최초의 어원으로 보고 있으나 이는 잘못된 것이다. "훈몽자회(訓蒙字會)"의 '고쵸(초(椒))'는 고추가 아닌 매운 열매의 총칭으로 호초(胡椒), 천초(川椒), 진초(秦椒)를 의미한다. 이는 "구급간이방(救急簡易方)"(1489)의 천초(川椒)를 의미하는 '초(椒) 고쵸'에서도 확인할 수 있다. 셋째, 현재 대부분의 사전류에서 고추의 한문표기가 고초(苦草)로 되어 있으나 고초(苦椒)로 정정되어져야 한다. 초(草)(상성(上聲))와 초(椒)(평성(平聲))는 발음은 같지만 성조(聲調)가 다르며, 또한 "본사(本史)"(1787)에 고초(苦椒)와 고초(苦草)는 서로 다른 식물로 기록되어 있다. 넷째, 고초(苦椒)는 '고쵸'라는 우리말에 맞추어 만든 국자(國字)로 고추가 천초(川椒)와 비슷하지만 맵고 쓰다라는 뜻으로 사용된 것이다. 다섯째, 맵고 뜨거운 성질이 있는 고추는 냉증(冷症)을 유발시킬 수 있는 냉성(冷性)야채를 중화(中和)시키는 작용을 한다. 여섯째, 고추는 소음인 식품의 경향성을 띈 훈채류에 속한다.

• Journal of Korean Society of Environmental Engineers
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• v.28 no.11
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• pp.1198-1206
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• 2006

We have carried out highway traffic noise prediction and measurement for 10 sites with representative road shapes and structures. A road traffic noise prediction model(NIER('99)) has been developed for environmental impact assessment in Korea. With the fitted regression analysis, the distribution ratio($R^2$) and Pearson correction coefficient(r) was 92.4% and 0.96 in $1^{st}$ floor, 38.7% and 0.66 in $3^{rd}$ floor, 42% and 0.65 in $5^{th}$ floor, 7.5% and 0.27 in $7^{th}$ floor, 28.4% and 0.53 in 10th floor, 35.6% and 0.60 in $13^{th}$ floor, 52.7% and 0.73 in $15^{th}$ floor, respectively. The measured values of the noise level except the 1st floor did not show a good agreement with the predicted noise level in the NIER('99) formula. Also, the NIER('99) formula demonstrated that the measured values weren't reasonably close to the predicted values, indicating the validity and adequacy of the predicted models with the fitted vs residual analysis in the 95% of confidence interval and 95% of predict interval. Using the equal variation on the basis of the residual vs fitted value, there was the significant difference for variation between $3^{rd}$ floor and $15^{th}$ floor except $1^{st}$ floor. The results suggested that the NIER('99) model obtained by the results according to the apartment floor must be improved and developed on the road traffic noise.

• Journal of the Korean Applied Science and Technology
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• v.38 no.5
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• pp.1241-1248
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• 2021

In order to figure out various environmental problems, various governments and companies are investigating more environmentally policies and technologies. In other words, activated carbon is widely used for the adsorption of different harmful gases and waste liquid treatment. However since the required surface properties are different in various industry, depending on the adsorption properties, the development of activated carbon demand in different ways. In this work, we have investigated and developed the activated carbon surface to improve the hydrophilic properties by nitric acid treatment through reforming of activated carbon.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.1
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• pp.75-84
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• 2021

The authors had presented two previous papers[1,2] on Helicopter/Rotorcraft develoment in Europe and US. Meanwhile, the next generation rotorcrafts, currently under development in US and Europe, have new configurations (tilt-rotor, coaxial, compound) of rotor-type vertical takeoff/landing rotorcrafts to overcome the disadvantages of traditional helicopters. For developing these new types of rotorcrafts, the upgraded conceptual design/comprehensive programs are required. In US and Europe, they are already developing new program tools with their technologies and database obtained during more than last half centuries. For us, many academia, research institutes and industrial engineers have experienced and developed core technologies on rotorcrafts (aerodynamics, structural analysis, flight dynamics, and noise analysis etc.) comparable to US and Europe during last couple of decades of developing helicopters and various configurations of rotorcrafts. In this paper, the pros and cons of conceptual design/comprehensive tools currently used in US and Europe have been summarized. Furthermore, the possibilities and problems to develope our own design and analysis tools have been studied.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.227-233
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• 2020

The demand for porous asphalt mixtures is increasing because it has a range of functions, such as reducing traffic accidents and traffic noise. On the other hand, its application is delayed due to concerns about durability. This study examined the effects of the maximum aggregate size, temperature, and porosity of an asphalt mixture on the durability. To this end, the durability measure was set to the Cantabro loss rate. Mixtures having the same porosity of 20% and the maximum aggregate diameters of 13 mm, 10 mm, and 8 mm were tested at 20℃ and -20℃. Mixtures containing 20% and 22% voids with the same material having the same diameter were tested. With 20% porosity, there was no significant difference in durability when there was a change in the maximum aggregate size. There was a significant difference between 20℃ and -20℃, but no significant difference in durability when there was a 2% difference between 20% and 22%. The significance of this study is that the durability was presented quantitatively by tests and statistical analysis. This research will help improve the durability of porous asphalt mixtures by evaluating the factors affecting the durability quantitatively.

• Journal of Korean Tunnelling and Underground Space Association
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• v.24 no.1
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• pp.79-94
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• 2022

The demand for tunnel construction is increasing as part of underground space development due to urban saturation. The shield TBM method minimizes vibration and noise and minimizes ground deformation that occurs simultaneously with excavation, and shield TBM is generally applied to tunnel construction in urban areas. The importance of urban ground settlement prediction is increasing day by day, and in the case of shield TBM construction, ground deformation is minimized, but ground settlement due to tunnel excavation inevitably occurs. Therefore, in this study, the correlation between shield TBM, which is highly applicable to urban areas, and ground settlement is analyzed to suggest the shield TBM construction factors that have a major effect on ground settlement. Correlation analysis was performed between the shield TBM construction data and ground settlement measurement data collected at the actual site, and the degree of correlation was expressed as a correlation coefficient "r". As a result, the main construction factors of shield TBM affecting ground settlement were thrust force, torque, chamber pressure, backfill pressure and muck discharge. Based on the results of this study, it is expected to contribute to the presentation of judgment criteria for major construction data so that the ground settlement can be predicted and controlled in advance when operating the shield TBM in the future.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.42 no.6
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• pp.751-762
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• 2022

Welded head studs are mainly used as shear connectors to bond steel girders and concrete slabs in steel-concrete composite bridges. For welded shear connectors, environmental problems include noise and scattering dust which are generated during the removal of damaged or aged slabs. Therefore, it is necessary to develop demountable shear connectors that can easily replace aged concrete slabs for efficient maintenance and thus for better management of environmental problems and life cycle costs. The buried nut method is commonly studied in relation to bolted shear connectors, but this method is not used in civil structures such as bridges due to low rigidity, low shear resistance, and increased initial slip. In this study, in order to mitigate these problems, a demountable bolted shear connector is proposed in which the buried nut is integrated into the stud column and has a tapered shape at the bottom of an enlarged column shank. To verify the performance of the proposed demountable stud bolts in terms of static shear strength and slip displacement, a horizontal shear test was conducted, with the performance outcomes compared to those of conventional welded studs. It was confirmed that the proposed demountable bolted shear connector is capable of excellent shear performance and that it satisfies the slip displacement and ductility design criteria, meaning that it is feasible as a replacement for existing welding studs.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.463-476
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• 2022

After industrialization in the past, the automobile industry has continued to grow centered on internal combustion engines, but is facing a major change with the recent 4th industrial revolution. Most companies are preparing for the transition to electric vehicles and autonomous driving. Therefore, in this study, topic modeling was performed based on LDA algorithm by collecting 4,002 domestic papers and 68,372 overseas papers that contain keywords related to CASE (Connectivity, Autonomous, Sharing, Electrification), which represent future automobile trends. As a result of the analysis, it was found that domestic research mainly focuses on macroscopic aspects such as traffic infrastructure, urban traffic efficiency, and traffic policy. Through this, the government's technical support for MaaS (Mobility-as-a-Service) is required in the domestic shared car sector, and the need for data opening by means of transportation was presented. It is judged that these analysis results can be used as basic data for the future automobile industry.

• The Journal of the Acoustical Society of Korea
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• v.43 no.3
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• pp.351-360
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• 2024

With the increasing use of drone technology, the Unmanned Aerial Vehicle (UAV) is now being utilized in various fields. However, this increased use of drones has resulted in various issues. Due to its small size, the drone is difficult to detect with radar or optical equipment, so acoustical tracking methods have been recently applied. In this paper, a method of localization of multiple drones using the acoustic characteristics of the quadcopter drone is suggested. Because the acoustic characteristics induced by each rotor are differentiated depending on the type of drone and its movement state, the sound source of the drone can be reconstructed by spatially clustering the results of the estimated positions of the blade passing frequency and its harmonic sound source. The reconstructed sound sources are utilized to finally determine the location of multiple-drone sound sources by applying the source localization algorithm. An experiment is conducted to analyze the acoustic characteristics of the test quadcopter drones, and the simulations for three different types of drones are conducted to localize the multiple drones based on the measured acoustic signals. The test result shows that the location of multiple drones can be estimated by utilizing the acoustic characteristics of the drone. Also, one can see that the clarity of the separated drone sound source and the source localization algorithm affect the accuracy of the localization for multiple-drone sound sources.

• Journal of the Korean Society of School Health
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• v.7 no.1
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• pp.45-55
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• 1994

The purpose of this study is to contribute to improvement of educational environment by analysing all problems related to environment around the school. To accomplish this purpose, this study was carried out by examining the problems in controlling the areas required for cleanup with 220 teachers in charging the cleanup duties of the primary and secondary schools in Taegu between June 1 and July 15, 1993 and by actually surveying the prejudical business stores around 72 primary schools between August 10 and September 20, 1993. Although most teachers answered to the questionnaires that it is necessary to cleanup the bad environment around the school, the duties of its cleanup tend not to be considered as an important matter. The teachers considered that the most prejudical business store around the school is totally the game room, and in such order as comic books' store, liquor selling shop and causing noise and pollution. 57.3% of total respondents answered that the present cleanup movements have resulted in failure mostly because of both supervising authorities' careless promotion and store owners' excessive commercial transactions. The result of actual survey in environmental and sanitary cleanup area around 72 primary schools showed that the greatest number of 1,258 prejudical stores was the video tapes shop, and then in such order as lodgings, and game rooms, while the number of prejudical store by the schools was 17.5 stores per school on the average which showed a various distribution from zero to 77 places. In general, these prejudical stores were mainly located around the schools in Jung-gu and Seo-gu areas. In addition, it was shown that the more the number of students, the more the number of the prejudical stores. In order to improve the environment around the school, it is necessary to strictly carry out the zoning system relating to the usage of land, to strongly restrict the stores without permit and abnormal stores and to establish the basis asking the city development authorities to go through the environmental evaluation. Moreover, it is absolutely required to make efforts to establish the national right sense of education, and to closely cooperate with the related authorities.