• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.298-298
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• 2022

최근 우리나라는 과거에 비해 기후변화 등의 사유로 가뭄과 홍수가 증가하는 추세에 있으며, '90년대에 들어서는 대규모의 홍수와 극심한 가뭄이 거의 매년 되풀이 되고 있어 지역간 물수급·공급의 불균형이 심각하여 국민이 활용가능한 수자원확보량과 공급가능량이 많은 차이를 보이고 있다. 기후패턴 변화 및 지속적인 용수수요 증가로 인해 가뭄 발생 위험이 커지고 있으나, 신규 수자원개발은 지역갈등 유발 등 사회적 여건에 따라 불가하므로, 기존댐을 평가하고 효율적으로 활용한다는 것은 기존 수자원을 최대한 활용하여 그 가치를 재조명하고 감춰져 있는 수자원을 다시 찾아내어 활용한다는 점에서 큰 의미가 있다. 허나, 댐 용수공급 안정성을 재평가하기 위한 그간 수많은 노력이 이루어지고 있으나, 용수공급 안정성(이수안전도) 기준은 댐 건설 당시 시대적 여건 등에 따라 다르게 적용되어 표준화된 기준이 전무한 실정이다. 이에 따라 국민의 물이용 보장 등 수요자 입장을 고려한 댐별 표준화된 이수안전도 기준 마련이 시급하다고 판단되며, 본 과업을 통해 댐마다 달리 적용된 이수 안전도를 개선하여 형평성을 고려한 국민 물이용 보장 등을 구현할 수 있는 댐 이수안전도 표준화 및 개선방안을 도출하고자 한다. 표준화된 기준을 통하여 신규댐 설계, 기존댐 평가, 갈수 대책용량 결정 등과 관련하여 용수공급 능력 평가 시 혼란을 사전에 예방하고, 본 연구에서는 수자원 시스템의 용수공급 안정성(이수안전도)을 평가하고 표준화 방안을 마련하기 위한 정량적이고 객관적인 지표를 개발하였고 이를 댐설계 기준 등 국가계획에 반영하여 지침 화할 수 있는 방안을 연구하였다.

• Journal of the Korean Society of International Agriculture
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• v.23 no.5
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• pp.485-490
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• 2011

In Southeast Asia, Myanmar is the largest country of the continent with land area 676,577 km² that is three times higher than Korea. Nonetheless, a lot of diversity in agricultural enterprises is available in Myanmar as different climatic zones are available due to its unique location from north to south and east to west. Agriculture is considered the most important industry in Myanmar that largely relies on rice production. During 2009-10, rice and black gram are also among the major export items of Myanmar. Wheat, maize and sorghum are among the other major crops of the country and cultivation area of wheat and corn has been steadily increasing. Sesame is an important oilseed crop of Myanmar that is cultivated on the largest area. Presently, Myanmar has trade relations with Thailand, India and China.

• The Journal of Korean Medical History
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• v.36 no.2
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• pp.13-25
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• 2023

Due to Japanese imperialism's invasion of Korea and the policy of exterminating national culture, many independence activists from Korean medicine participated in the Manchurian Independence Army activities and the fight for freedom. Kang Woo-kyu, who threw a bomb at the governor-General of Korea on September 2, 1919, can be cited as a leader who learned East Asian medicine. Kim Kwanje, who organized a secret organization by opening an East Asian medicine clinic in Gimhae, Gyeongsangnam-do, was involved in the struggle of the medical corps while working as a medical student. He is accused of providing a shelter by treating members of the Uiryeoldan. In 1919, the Manchurian Independence Army unit, which launched the March 1st Movement armed struggle, was established, and those who served as military doctors in various organizations can be found. Park Se-jung, who participated as an independent soldier at the age of 47, treated wounded soldiers and patients as a military doctor. A branch office was also created by raising military funds and participating in the Provisional Government of the Republic of Korea. Jang Hyong was able to raise independent military funds, campaign for the provisional government's independence petition, and lecture across the country mostly disguised as an East Asian medicine doctor, which led to several imprisonments for "fraud charges under the guise of similar medical practices".

• Ecology and Resilient Infrastructure
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• v.2 no.1
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• pp.80-92
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• 2015

Some of alien plants, which were introduced from foreign countries, have caused problems in Korea. Invasion of these alien plants in the ecosystem threatens the habitat of endemic species, reducing biodiversity, and causing a disturbance in the ecological system. In urbanized areas of campus universities, a diverse range of organisms were found and a comparison between the sites, near roads or housing sites were made because the campuses provided a large biotope. Although the campus had been exposed to interferences like gardening, it was also a place for most organisms to live in an active floating population due to free access. This research investigated the flora of alien plants that appeared in Beakseok University, Sangmyung University, Hoseo University and Dankook University, and relationship between the distribution of alien plants and the campus and green areas and distance from the highway. The total number of plant species and naturalized species found in the four universities was 189 and 43 species. Those of Dankook University were 136 and 35 species, Hoseo 108 and 25 species, Sangmyung 103 and 31 species, and Baekseok 97 and 26 species, respectively. The abundance of natural plants for each respective university tended to be higher as it became closer to the highway. Also, the closer the walking distance to the university, the greater the tendency for the degree of similarity to be higher. As a result, we may conclude that the distribution of alien plants and anthropogenic activities may be closely related.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.10 no.3
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• pp.1-13
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• 2015

Strong ties such as family members, relatives and close friends have been widely acknowledged as a vital factor when a potential entrepreneur attempts to initiate entrepreneurial activity. Recent theoretical arguments focus that family social capital, a form of social capital, that is embedded in family relationships can contribute to venture creation as well as to the development of competitive advantage for established firms. Meantime, there have been arguments that the most dominant single entrepreneurial ethnic group in the world is the Chinese people, while the People's Republic of China is widely recognized as fast growing economic power that is driven by entrepreneurial ventures in a large scale. This study tests the effect of perceived relational supports typically being provided by family members, close relatives and friends on forming self-efficacy and entrepreneurial motivation of university students by using samples collected from 4 Korean Universities(Wonkwang, Baekseok, Soongsil and Dankook university) and Guangzhou University in China. The mediating of self-efficacy was also tested to gain better understanding of the role of the variable. The results of the study suggest that 1) both self-efficacy and entrepreneurial motivation are influenced positively by the perceived relational supports, 2) self-efficacy of university students affects their entrepreneurial motivation positively, 3) self-efficacy is appeared to be mediated partially for China in between perceived relational supports and entrepreneurial motivation, but the same variable is exhibited a full mediation in the same path of the research model for Korea, which was a distinction between the students of two countries in this study. Discussion and practical implication on the results are provided.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.40-46
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• 2019

The purpose of this study is to investigate the effect of positive psychological capital on re-employment attitudes of youth in their 20s dealing with an unemployment rate of more than 10%. The effect of positive psychological capital on attitudes for re-employment was analyzed by domain, and is based on variables of positive psychological capital composed of self-efficacy, hope, resilience, and optimism. As a result, hope (3.64) was the highest on the scale; however, resilience (at 3.37) was the lowest. In the analysis of positive psychological capital, the university graduate group (3.89) was the highest. But, the high school graduate group (3.25) was the lowest. In the results for re-employment attitude based on education level, the university graduate group (4.93) was the highest, but the high school graduate group (3.80) was lowest. The main variables influencing re-employment attitude were (in order): hope, optimism, self-efficacy, and resilience. These factors have an explanatory power for the four variables of around 25%. Overall, young adults (in their 20s) have higher levels of positive psychological capital because they have a higher education level. Also, higher educated re-employed applicants have higher positive psychological capital and attitudes for re-employment, compared to the other groups.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.35 no.10
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• pp.171-180
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• 2019

In Korea, the seismic design of non-structural elements was interested by Earthquake of the 2016 Gyeong-ju and 2017 Po-hang. Among the non-structural elements, the ceiling system with steel panel used in Po-hang station showed failure examples of non-seismic design ceiling. In this study, the seismic performance of suspended ceiling with steel-panel, such as those used in Po-hang Station, was evaluated by shaking table tests. The shaking table tests were performed in accordance with the ICC-ES AC156 standard with floor acceleration being applied horizontally in one direction using a $3.3{\times}3.3m^2$ frame. The ceiling system consists of steel-panels, carrying channels, main and cross T-bars, and anti-falling clips. The anti-falling clip prevents the steel panel falling completely. The shaking table test confirmed that the damage at the previous stage had a direct impact on the damage state at the next stage. Through the shaking table test, the damage state of the T-bar type steel-panel suspended ceiling system was defined.

• Food Engineering Progress
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• v.13 no.4
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• pp.360-364
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• 2009

The onion extractions of MIX treatment (5% $\beta$ cyclodextrin+1% calcium chloride+1% soluble starch mixture solution) using hot water (100${^{\circ}C}$ and 80${^{\circ}C}$) and ultrasonic treatment (25${^{\circ}C}$) incresed L values and decreased a and b values apart from the extraction methods. Extent of the browning reaction as caused by the MIX treatment (0.093) following 100${^{\circ}C}$ water extraction resulted in as low as 31% O.D. level, as compared to the control(0.296). Analysis of the pyruvic acid showed that the control had higher content of pyruric acid than MIX-treated samples. The MIX treatment had lower intensities and higher preferences of browning color and pungency taste compared to the control. The total and coliform microbial counts increased continuously during storage period, while the MIX treatment reduced the number of viable cells. Finally, it was concluded that the MIX treatment was highly effective in suppressing the undesirable browning color and pungent taste after processing, and the microbes increment during storage.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.36 no.5
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• pp.33-40
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• 2020

The purpose of this research is to provide the basic information for the development of dental healthcare system's expertise and spatial composition in diverse dental spaces in Korea according to dental specialist system enforcement. Literature review of dental expertise especially dental specialist system and investigation on current status of spatial composition of dental spaces have been conducted. After the review, the spatial composition with field survey and architectural drawings of selected dental spaces have been analyzed. The result of this study is arranged with three points. First of all, the main clinical dental spaces are the dental school's dental hospital, dental department in medical center/hospital and private dental clinic in Korea. The second one is that dental school's dental hospital had differentiated to 10-11 departments in 1970-1980's and dental department in medical center/hospital has been changing to dental hospital with 5-7 departments in 2010's, and dental clinic is changing to specific dental clinic according to dental specialist system in 2018. The third one is that spatial composition is related with dental expertise at diverse levels. Spatial composition in dental school's dental hospital had been highly differentiated with dental expertise, dental department in medical center/hospital is partially subdivided with dental specialist system, but that of dental clinic is not changed according to dental specialist system. In addition to current spatial composition according to dental expertise, it is necessary to analyze the change of spatial composition with diachronic methods to develop the dental healthcare system.

• The Journal of the Acoustical Society of Korea
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• v.42 no.5
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• pp.422-428
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• 2023

Ultrafast ultrasound imaging has been applied to various imaging approaches, including shear wave elastography, ultrafast Doppler, and super-resolution imaging. However, these methods are still challenging in real-time implementation for three Dimension (3D) or portable applications because of their massive data rate required. In this paper, we proposed an adaptive quantization method that effectively reduces the data rate of large Radio Frequency (RF) data. In soft tissue, ultrasound backscatter signals require a high dynamic range, and thus typical quantization used in the current systems uses the quantization level of 10 bits to 14 bits. To alleviate the quantization level to expand the application of ultrafast ultrasound imaging, this study proposed a depth-sectional quantization approach that reduces the quantization errors. For quantitative evaluation, Field II simulations, phantom experiments, and in vivo imaging were conducted and CNR, spatial resolution, and SSIM values were compared with the proposed method and fixed quantization method. We demonstrated that our proposed method is capable of effectively reducing the quantization level down to 3-bit while minimizing the image quality degradation.