• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.395-395
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• 2022

본 연구는 머신러닝 기반의 상수도 모니터링 시스템의 예측 모델을 개발하고, 예측 모델의 적용이 가능성을 검토하였다. 상수도모니터링 시스템은 상수관망에 설치된 센서에서 수집된 자료를 모니터링 할 수 있어 운영자의 상수도 시설물의 관리 편의성을 높일 수 있다. 특히 수리학적 모델을 적용하여 계산된 값과 측정된 값을 비교해 이상치가 발생하면 운영자에게 이를 알려주므로 시스템내의 문제점을 빠르게 확인할 수 있다. 그러나 수리학적 모델은 입력자료가 증가됨에 따라 계산시간이 많이 소요되는 문제가 있고, 계산된 값의 정확도가 낮아지므로. 이러한 문제를 보완하기 위해 머신러닝 기반의 예측 모델을 개발하여 이를 해결하고자 하였다. 예측 모델은 GS 이니마 브라질(GS Inima Brazil)에서 운영중인 아라사투바(Aracatuba) 지역 주사라(Jussara) DMA(District Metered Area)의 2018년 1월에서 7월까지의 운영자료를 이용하였으며, 상수도 모니터링 시스템에서 상수관로 수압에 영향을 미치는 영향 인자들을 분석하고, 하이퍼파라미터 최적화를 통한 수압 예측 모델을 개선하였다. 금회 연구는 머신러닝 기반의 모델을 통하여 상수관망의 시간변화에 따른 장래 예측 수압을 검토할 수 있었다는데 큰 의의가 있다.

• Korea Trade Review
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• v.47 no.4
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• pp.53-68
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• 2022

It has great significance to estimate CIF-FOB margins of international trade. It certainly helps develop statistics on transport costs of international trade and provides basic data for econometric analysis of transport costs. It also contributes much to our standing the correlation between the margins and trade partners' geographical distance as well as one between the margins and trading products. However, the quality issue of international trade statistics renders it very difficult to derive trustworthy CIF-FOB margin estimates. Utilizing various analytical approaches, this study intended to acquire credible estimates of CIF-FOB margins for Korea's total imports and for country/product specific imports data. Major findings are as follows. First, the average of CIF-FOB margins of Korea's total imports is 7.3% and is generally declining. Second, country level analysis provides credible estimates for CIF-FOB margins of Korea's imports from four partners (Japan, the US, Australia, and Brazil). The differences in margins among these four countries are caused by geographical distance and characteristics of traded products. Third, product level analysis reveals that the margins of gold and passenger vehicles are fairly low while those of primary products tend to be high.

• Asian Journal of Business Environment
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• v.13 no.4
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• pp.19-28
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• 2023

Purpose: Emerging markets under industrialization have become increasingly influential over the global natural-resource transactions. However, their average deal completion rates have been relatively low. The international business (IB) literature regards the low rate as evidence of 'double hurdle', the extra disadvantages in doing overseas business for firms from developing countries. Because legitimacy building mitigates liability of foreignness, we argue that an acquirer's environmental responsibility effectively builds legitimacy. Research design, data and methodology: Stakeholders in the host country spread the acquirer's environmental responsibility so that, by raising legitimacy, they may strengthen the link between environmental responsibility and deal completion. Our dataset consists of the 608 cross-border acquisition deals announced by the 196 firms in Brazil, Russia, India, and China over 2008-2019 period. Results: A logit regression result confirms that environmental responsibility increases the likelihood of acquisition deal completion. Also, host-market stakeholders positively moderate the relationship between environmental responsibility and the likelihood of deal completion. Conclusions: Overall, this study contributes to the IB literature by identifying environmental responsibility as a key approach to lowering the double hurdle in internationalization of firms in emerging markets. Any emerging multinationals interested in the foreign, brownfield entries to the natural-resource industries must enhance the environmental responsibility, which turns out extremely important.

• The Journal of Industrial Distribution & Business
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• v.15 no.1
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• pp.1-8
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• 2024

Purpose: The purpose is to investigate the types of communication between aviation industry workers and passengers according to environmental changes following the COVID-19 pandemic. This study analyzes the impact of verbal and non-verbal communication styles of airport staff, especially those working at airline check-in counters, on passenger satisfaction. Research Design: The research design focuses on the impact of verbal communication styles and non-verbal communication factors of airline check-in counter staff, who represent the initial point of contact with passengers among airport staff, on passenger satisfaction. The survey period for sample collection was from July 1 to July 30, 2023, and the study was conducted targeting passengers boarding aircraft through Incheon Airport and Gimpo Airport. Result: First, it is important for airport staff to recognize all passengers, especially corporate customers, as corporate customers rather than simply as individuals boarding an airplane. Second, as the importance of non-verbal expressions increases due to the impact of COVID-19, physical and verbal responses are necessary. Third, it is important to check which language the passenger understands. Conclusions: Since communication through nonverbal expressions has become more important since COVID-19, airport employees need to recognize the importance of nonverbal communication. This awareness can serve as a foundation for building trust between airport staff and passengers.

• Journal of Korean Medicine Rehabilitation
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• v.34 no.1
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• pp.49-64
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• 2024

Objectives By bibliographically analyzing acupuncture treatment studies for temporomandibular disorders over the past 20 years, we found an overview of global trends and a new perspective on future research directions. Methods We searched on the Web of Science webpage through the formula (TS=[temporomandibular] OR TS=[craniomandibular] OR TS=[jaw]) AND (TS=[^*acupuncture] OR TS=[dry needl^*] OR TS=[warm needl^*] OR TS=[thread embed^*]) AND (PY=[2003-2022]). And it was analyzed by year, research field, academic journal, country, research institute, author, and keyword. Results 194 papers were searched, and 92 papers were finally selected. The number of papers published over the past 20 years has been on the rise. Research has been the most active in the field of Dentistry Oral Surgery Medicine. Brazil published the most papers. And by institution, Universidade de Sao Paulo published the most papers. Among the authors, Fernández-de-las-Peñas has published the most papers. In the analysis by keyword, the top five keywords were temporomandibular joint disorder, acupuncture, myofascial pain, pain and management. Conclusions This study will provide useful guidelines for setting the direction of research by referring to the research status and keyword analysis when conducting research on the acupuncture on temporomandibular disorder in the future.

• Asian-Australasian Journal of Animal Sciences
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• v.7 no.1
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• pp.63-68
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• 1994

432 samples of raw goat milk were analyzed for sodium, calcium, potassium, chloride, and ashes content. The samples came from 16 pure breed goats, 2 to 4 years of age kept in semi-feedlots. They were basically fed soy bran, cotton bran, triturated Guandu hay and disintegrated corn with its straw and corncob (according to requirements for due preservation and production). The mean values found were: sodium, $45{\pm}10.2mg%$ (24.5-65.6 mg%); potassium, $206{\pm}44.7mg%$ (116.6-295 mg%); calcium, $111{\pm}22mg%$ (66.5-155.4 mg %); ashes, $0.82{\pm}0.06mg%$ (0.68-0.95%); chloride, $235{\pm}39mg%$ (157-313 mg%). Results were related to: a) breed, the Brown and the Saanen revealed superior values for calcium and ashes, b) climate, which in the rain season led to higher contents of sodium, potassium, and calcium when compared to the local dry season, c) time of lactation which increasingly affected the contents of calcium, sodium and ashes, and d) the time between milking, when higher concentration of chloride and ashes were mostly concentrated in the evening and calcium in the morning. These results have important implications in the handling and management of the goat herd.

• Fashion & Textile Research Journal
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• v.14 no.5
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• pp.749-757
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• 2012

The purpose of this study is to consider the characteristics of Latin American style expressed in modern fashion. Latin American fashion has been overlooked the influences, scope and diversity of dress within this world culture region. So, this study aim to unravel the history and significance of Latin American fashion. As for the research methodology, to classify types of the Latin American fashion style theoretical study and content analysis for Vogue magazine has been undertaken. In this study, the term of Latin American fashion style refers to the dress of common characteristics involving Latin American culture. To inquire into the characteristics of the types, various cases has been searched through books, internet, and designer's collections. The results of this study can be summarized as followings. The major types of Latin American fashion style are Indio-ethnic style, tropical-exotic style, and latin-romantic style. First, Indio-ethnic style has been involving traditional costumes and patterns which are originated in ancient Mexico and Peru. Second, tropical-exotic style has been involving bright color, tropical fruit and African flower pattern, various textures, and relaxed silhouette which are inspired by free and easy culture in Brazil and the Caribbean. Third, latin-romantic style has been involving the mix of Latin American tradition and romantic detail such as see-through material, lace, ruffle, spanish flower motif. In conclusion, Latin American style on contemporary fashion is based on interest to cannibalize folk theme, technique, icons and exotic others.

• Journal of Digital Contents Society
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• v.18 no.6
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• pp.1109-1118
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• 2017

With mobile payment always at the center of the fintech craze all over the world, many countries led by China, India, England and Brazil are dedicated to activating and supplying online and offline mobile payment services, securing competitive advantage in the global mobile payment market. However, Korea that had proudly considered itself as an IT power was crowded out of the top 10 ranking, falling behind even Australia, Mexico and Germany. Therefore, this study conducted an empirical research to measure the word-of-mouth intention of general consumers using offline mobile payment service in Korea. Furthermore, it comparatively analyzed the world's most powerful country, China, in mobile payment services, and analyzed the difference in consumer perception between Korea and China.

• Journal of Acupuncture Research
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• v.34 no.3
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• pp.13-21
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• 2017

Objectives : The purpose of this study was to investigate the effect of acupuncture treatment (AT) in the tendency of increase of the need for AT for the treatment of Parkinson's disease (PD) worldwide and to investigate the advancements in AT research in Korea and the future directions of research on this topic. Methods : Until May 2017, the PubMed, Scopus, Medline, and four Korean databases were searched. The searched keywords were "Parkinson's disease", "Acupuncture", and "Intervention study". The intervention groups from all screened original studies were analyzed and the methods used to determine the effect of AT on PD were examined. Results : A total of 17 studies were grouped by country on the basis of the first author's position, of which 10 studies were conducted in China, four in the United States, two in Korea, and one in Brazil. The most common type of intervention was electroacupuncture (nine studies), followed by AT (six studies), and a combination of AT and bee venom AT (two studies). The most frequently used acupoints in AT were Baihui (GV20), Taichong (LR3), Zusanli (ST36), Sanyinjiao (SP6), and Yanglingquan (GB34). The most commonly used tool for evaluation of PD was the Unified Parkinson's Disease Rating Scale III, which assesses motor functions. Conclusion : The screened studies reported that there were no adverse effects of AT on drug therapy, and AT reduced the dose of drugs used in PD treatment. Future studies on PD treatment with AT should use the acupoints GV20, LR3, ST36, SP6, and GB34, and the meridians Gallbladder meridian and Governor Vessel. Clinical studies on PD should use CONSORT or STRICTA to ensure the quality of national studies and allow the development of new tools for the assessment of the effect of AT on PD using the above criteria.

• International Commerce and Information Review
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• v.17 no.3
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• pp.115-130
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• 2015

This paper investigates how ODA FDI Trade affect economic growth in 4 South America countries over the last 50 years and ODA, FDI, Trade have a impact on the 4 South America countries economic growth using the Vector Error Correction Model. The results of empirical analysis based on data from 1960 to 2014 confirmed that FDI and trade than ODA has had a significant impact on Brazil and FDI, Trade had affected on Argentina economic growth. On the other hand, ODA had a more major impact on Venezuela, Peru economic growth than FDI and trade. Based on the results of these empirical analysis, when it comes to support for economic growth of underdeveloping countries, developed countries have to supply enough ODA for least developing countries to start economic growth, in case of economic take off stage, they should consider FDI, and international trade volume increase.