• Korean Journal of Clinical Laboratory Science
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• v.55 no.1
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• pp.52-64
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• 2023

This study aimed to examine the types and characteristics of otorhinolaryngology examinations performed by clinical laboratory technologists and to investigate the working environment and scope of work of otorhinolaryngology laboratory personnel using online questionnaires. Based on the research results, constructive policy measures for the University-Association-Society were also presented. Most of the survey respondents were in their 40s (34.1%). Females accounted for 80.2% of respondents and 30.8% of them had a career spanning 15 years or more. We found that laboratory personnel had a wide scope of work, high work stress and frequently suffered occupational diseases. We observed that, to reduce stress and increase satisfaction, an expansion of the workforce was necessary. Compared to other occupations, 72% of clinical laboratory technologists occupied more senior positions, occupational distribution depended on senior positions (P<0.001). Clinical laboratory technologists performed about 26 types of otorhinolaryngology examinations. The most frequent test performed daily was pure tone audiometry, and polysomnography took the longest test time, with an average of 8 hours. In conclusion, clinical laboratory technologists were in charge of various specialized otorhinolaryngology examinations. Considering the importance of clinical laboratory technologists in otorhinolaryngology, the University-Association-Society should put in additional effort into nurturing otorhinolaryngology examination experts.

• Korean Journal of Social Welfare Studies
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• v.44 no.2
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• pp.437-463
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• 2013

As polarization and class reproduction between generations are considered to be serious problems in Korean society, increasing number of assortative mating, which means marrying between homogeneous family background, income class, and educational background, is on the spotlight socially. Some worry that the increase of assortative mating can reinforce closure of social mobility so it deepens inequality and limits class mobility between generations. This research analyzes the effects of accomplishment characteristics of husbands and wives and ascriptive characteristics of parents which consist the concept of assortative mating, on income, consumption, and assets those represent economic status of a family. The purpose of this research is to suggest empirical understanding on the role of assortative mating that affect on inequality within generations and income mobility between generations in Korean society. In the result of multiple regression analysis on the effect of assortative mating on income, consumption, and assets, high educational background was the factor that increase income and consumption level as accomplishment characteristics of assortative mating. As ascriptive characteristics of assortative mating, educational homogeneous of fathers was the factor that increased asset level. While accomplishment characteristics affect income and consumption, ascriptive characteristics of homogeneous had significant effect on assets. Thus, it was found that transfer between generations had effects around asset rather than income. In particular, ascriptive characteristics in young husbands and wives aged 20s or 30s had significant effect only on the assets.

• (The) Research of the performance art and culture
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• no.22
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• pp.327-370
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• 2011

Shakespeare's text "Hamlet" was first introduced in Korea in the first part of 1920s by Hyeon Cheol via 『Gaebyeok』. Its performance of whole acts was realized in Kinema Theater in Daegu by the direction of Lee Hae-Rang (translated by Han Lo-Dan) in September, 1951, during the Korean War. Since then, a variety of performances were carried out by numberless performing artists and performing groups in the 1960s, 1970s, 1980s and 1990s. The purpose of this study was, among numberless performing artists and performances appeared in the history of performance of "Hamlet", to examine Lee Hae-rang's direction standpoint of "Hamlet", which has been one of the mainstays since the 1950s. For this, among many performances directed by Lee Hae-rang, the investigator referred to the performing scripts and performance criticisms for the opening performance of Drama Center in 1962 and the performances in HOAM Art Hall in 1985 and 1989, focusing on the text "Hamlet" performance in 1951. In the second chapter, the concept, standpoint and background of realism, the base of his theatrical activities in his lifetime, were examined. In the third chapter, before analyzing his direction standpoint for text "Hamlet", the traditional and modern concept of text was summarized and a variety of standpoints and viewpoints for the text were analyzed. And based on the above summary and analysis, his direction standpoint was analyzed and examined, thus presenting a clue for the discussion on the position of Shakespeare's text "Hamlet" directed by Lee Hae-rang in the Korean history of performance and its performance aesthetics.

• Conservation Science in Museum
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• v.29
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• pp.33-46
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• 2023

Modern and contemporary cultural assets are defined as a collective term for tangible historical and cultural assets produced in the modern and contemporary period (around the opening of Joseon to the present) in Korea. Among them, rickshaws have been used as a major means of transportation for about 40 years since the opening of the ports in Joseon. The repair process for rickshaws divides the rickshaw into three parts, namely the body, the cover, and the wheels, applying a plaster treatment process by referring to the outcomes of the condition assessment and material analysis for the metal, wood, fiber, and paint used. Overall, the repair process is carried out through dry/wet cleaning, joining, stabilization, reinforcement of damaged parts, and other restoration treatments, which reveal metal decorations and patterns on the scaffolding (flowers, arabesque patterns, etc.) that were previously not observable with the naked eye, while also adding to the stability of the artifact. In addition, props were produced to ensure the artifact's safe exhibition.

• Korea Trade Review
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• v.43 no.4
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• pp.155-175
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• 2018

This study estimates the technical efficiency and total factor productivity(TFP) of and analyzes the relationship between TFP and exports for Korean manufacturing companies from 2000 to 2016. Specially, TFP is decomposed into Technical Change(TC), Technical Efficiency Change (TEC), and Sale Effect(SE), and compared between large and small enterprises. First, in the case of technical efficiency, the Korean economy has been very vulnerable to external shocks, such as the sharp decline following the 2008 financial crisis. The efficiency of the electronics, automobile, and machinery sectors is low and needs to be improved. In addition, the technological efficiency of large enterprises is higher than that of SMEs in most manufacturing sub-sectors except for non-ferrous metals. In the case of TFP, most changes are due to TC, and the effective combination of labor, capital and the effect of scale have little effect, suggesting that improvement of internal structure is urgent. In addition, volatility due to the impact of the financial crisis in 2008 was much larger in SMEs than in large companies, so external economic impacts are more greater for SMEs than large enterprises. The relationship between TFP decomposition factors and exports shows that TC has a positive effect only on exports of SMEs. Therefore, in order to increase exports, in the case of SMEs, R&D support to promote technological development is needed. In the case of large companies, it is necessary to establish differentiated strategies for each export market, competitor company, and item to link efficiency and scale effect of exports.

• The Journal of Korean Institute of Next Generation Computing
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• v.13 no.6
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• pp.7-20
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• 2017

The advancement of cloud and big data and the considerable growth of traffic have increased the complexity and problems in the management inefficiency of existing networks. The software-defined networking (SDN) environment has been developed to solve this problem. SDN enables us to control network equipment through programming by separating the transmission and control functions of the equipment. Accordingly, several studies have been conducted to improve the performance of SDN controllers, such as the method of connecting existing legacy equipment with SDN, the packet management method for efficient data communication, and the method of distributing controller load in a centralized architecture. However, there is insufficient research on the control of SDN in terms of the quality of network-using applications. To support the establishment and change of the routing paths that meet the required network service quality, we require a mechanism to identify network requirements based on a contract for application network service quality and to collect information about the current network status and identify the violations of network service quality. This study proposes a method of identifying the quality violations of network paths through ontology to ensure the network service quality of applications and provide efficient services in an SDN environment.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.303-303
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• 2021

소양호 유역의 만대가아자운지구는 2015년 비점오염원 관리지역으로 재지정 되면서 흙탕물 저감을 위해 중앙정부 차원에서 발생원 관리대책, 유출경로 관리정책 및 양한 비점오염 저감시설 등의 노력을 기울이고 있다. 하지만 상류 유역에서는 지속적으로 흙탕물이 발생되고 있으며, 뚜렷한 비점오염 저감효과가 나타나지 않고 있다. 본 연구에서는 정밀조사를 통해 흙탕물 발생 우심 소유역을 분석하고자 하였다. 정밀조사를 위해 관리지역별 하천 및 구거를 분석하였으며, 이를 통해 만대·가아·자운지구별 각 57지점, 31지점, 72지점에서 강우시 수질 모니터링을 수행하였다. 만대지구의 탁도는 167 NTU~7,970 NTU, SS농도는 164.3 mg/L~5,718.0 mg/L 로 관리지역 중 탁도 및 SS 농도가 높았으며, 시행계획상 구분된 소유역별 평균 탁도와 평균 SS농도는 만대천 상류구간이 가장 낮고, 상명천 소유역과 청룡안골, 방추골천, 방추골일천이 흐르는 소유역에서 높게 나타났다. 가아지구의 탁도는 17 NTU~962 NTU, SS농도는 17.8 mg/L~1,020.0 mg/L 로 조사되었으며, 평균 탁도와 평균 SS농도는 가아지구 말단 소유역에서 가장 낮고, 상류 소유역에서 높게 나타났다. 가아천 상류는 탁도 410 NTU와 SS농도 575.0 mg/L, 하류는 탁도 167 NTU, SS농도 197.3 mg/L로 나타나 상류에서 하류로 갈수록 탁도와 SS농도가 낮아졌으며, 상류 유역은 비점저감시설이 밀집해 있음에도 불구하고 다량의 흙탕물이 발생하는 것으로 나타났다. 그러나, 자운지구는 비점오염저감시설이 집중적으로 설치된 상류 유역에 비해 하류 소유역에서 탁도와 SS농도가 높은 것으로 조사되었다. 자운지구의 탁도는 7 NTU~761 NTU, SS농도는 10.8 mg/L~1,199.0 mg/L로 조사되었으며, 평균 탁도와 평균 SS농도는 자운지구의 하류 소한천 소유역이 가장 낮고, 조항천 말단 소유역에서 높게 나타났다. 정밀조사 결과 탁도 및 SS농도가 높게 나타나는 소유역은 공통적으로 고랭지밭의 비율이 높게 나타났기 때문에 고랭지밭에서 발생되는 흙탕물을 효과적으로 관리하기 위해서는 최근 환경부에서 시범 추진하고 있는 농경지 완화조성, 토지 매수사업, 식생완충대 조성 등의 발생원 관리대책 확대 추진이 필요할 것으로 판단된다. 또한 소양호 유역의 비점오염원관리지역은 2020년 비점오염원 관리대책 시행계획이 수립되어 향후 2026년 비점오염 저감 대책이 추진됨에 따라 지속적이고 정밀한 모니터링이 필요할 것으로 판단된다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2023.04a
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• pp.27-27
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• 2023

최근 기후위기 등으로 인해 생물다양성 감소 우려가 높아지고 있으며, 식물유전자원 보존의 강화를 위해 수많은 국제협약이 체결되고 있다. 자국의 생물다양성을 보호하고, 전 세계의 기후위기 취약식물의 보존을 위해 대한민국 산림청은 세계 최초로 지하터널형 야생식물종자 영구저장시설인 '시드볼트(Seed Vault)'를 경상북도 봉화에 설립하였다. 시드볼트는 안전한 종자의 저장을 위해 온도 -20℃, 습도 RH 40% 이하를 유지하며, 환경 변화를 최소화하기 위해 매일 시설 점검을 진행하고 있다. 시드볼트의 미션은 '기후위기 대응 생물다양성 확보'이며, 전 세계 종자저장의 선도기관으로 2022년 12월 기준으로 5,424종 192,625점을 확보하였으며, 2030년까지 1만 종 30만 점을 목표로 하고 있다. 전 세계 식물 종의 보호를 위해 국제기구와 협력하고 있으나, 해외 종자의 저장이 더욱 강화되어야 하며, 향후 시드볼트 종자저장 네트워크 구축에 참고하기 위한 해외 사례를 조사하였다. 아시아에서는 중국이 다량의 식물종을 수집하고 있으나, 해당 자료에 대한 공개는 이루어지지 않고 있으며, 일본은 농업식량 식물자원 중심으로 종자를 보존하고 있으며, 태국, 대만, 싱가포르 및 몽골 및 중앙아시아 국가의 종자수집과 보존은 근래 확대되는 추세이다. FAO의 Plant Genetic Resources for Food And Agriculture 관련 수집 자료에 따르면, 아시아지역 25개 국가에서 984,019점의 식물유전자원을 보고하였다. 본 연구를 바탕으로 아시아지역의 종자보존 네트워크를 구축하여 해외 종자의 안전한 저장을 통해 아시아 야생식물자원 다양성 보전 가치를 통합하는 시설로 성장하고자 한다.

• Journal of Advanced Navigation Technology
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• v.26 no.6
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• pp.496-503
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• 2022

In the reality that the fishing population is decreasing and the single-man fishing vessels is increasing, mandatory equipment for navigation and radio equipments for the safety of fishing boats has continued to be added. Therefore, many equipment such as navigation, communication and fishing are installed in the narrow steering room, so it is very confusing and a number of monitors are placed in the front, which is a factor that degrades the function of maritime observation. To solve this problem, we studied an interface that integrates and operates to major radio facilities such as very high frequency-digital selective calling equipment (VHF-DSC), automatic identification system (AIS) and fishing boat location transmission device (V-pass) into one multi function display (MFD) based on LAN. In addition, IEC61162-450 UDP packets and IEC61162 sentence were applied to exchange data through link between MFD and radio equipments, and additional messages needed for each equipment and function were defined. The integrated MFD monitor is easily operated by the menu method, and the performance of the interface was evaluated by checking the distress and emergency communication functions related to maritime safety and the message transmission status by equipment.

• Tunnel and Underground Space
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• v.33 no.6
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• pp.445-471
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• 2023

Long-term safety over millennia is the top priority consideration in the construction of disposal sites. However, ensuring the mechanical stability of deep geological repositories for spent fuel, a.k.a. radwaste, disposal during construction and operation is also crucial for safe operation of the repository. Imposing restrictions or limitations on tunnel support and lining materials such as shotcrete, concrete, grouting, which might compromise the sealing performance of backfill and buffer materials which are essential elements for the long-term safety of disposal sites, presents a highly challenging task for rock engineers and tunnelling experts. In this study, as part of an extensive exploration to aid in the proper selection of disposal sites, the anticipation of constructing a deep geological repository at a depth of 500 meters in an unknown state has been carried out. Through a review of 2D and 3D numerical analyses, the study aimed to explore the range of properties that ensure stability. Preliminary findings identified the potential range of rock properties that secure the stability of central and disposal tunnels, while the stability of the vertical tunnel network was confirmed through 3D analysis, outlining fundamental rock conditions necessary for the construction of disposal sites.