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대두, 밀 가공제품의 소매 유통채널별 가격전이에 관한 연구
김수현 ( Kim¸ Su-hyeon ),백승우 ( Back¸ Seoung-woo ) 한국식품유통학회 2021 한국식품유통학회 학술대회 Vol.- No.하계
The purpose of this study is to practically analyze the asymmetric price transmission between grain import prices and processed grain product prices by distribution channels, and which kinds of asymmetric price transmission exist if there is an asymmetric price transmission. This study examines unit root by augmented dickey-fuller (ADF), cointegration test by Johansen method to test stability of linear combination. In addition, this study examines granger causality, and testing asymmetric price transmission by using autoregressive distributed lag model (ARDL). Analytical results of Wheat flour indicate price transmission between import and retail prices appears to be asymmetric. Results of soybean indicate price transmission between import and retail prices of grocery store appears to be contemporaneous impact (COIA) and cumulated impact (CULA) asymmetric, but it is not a meaningful result because the ratio of grocery store is low in whole distribution channels. Analytical results of wheat flour indicate price transmission between import and retail prices of wholesale mart appears to have positive distributed lag effect (DLEA) and cumulated impact (CULA) asymmetric, and retail prices of super supermarket appears to be positive distributed lag effect (DLEA). Grain processed product market is a monopoly market, which the top two or three companies have the largest market share and power. This market dominance could be a major cause of asymmetric price transfer. This implies that grain products market is not operated efficiently. In summary, government policies are required to make grain products market more competitive and mitigate the monopoly structure. Also, it is suggested that government need to regulate price-fixing of grain products companies, and enforce indirect policies for efficient market and improve consumer benefits.
정수현 ( Jeong¸ Su-hyeon ) 국제어문학회(구 국제어문학연구회) 2020 국제어문 Vol.0 No.87
이 연구는 15세기부터 18세기까지의 ‘-도다’, ‘-로다’ 구문을 살펴보면서, 종결 어미 ‘-도다’, ‘-로다’가 결합 양상에서 어떤 차이를 보이는지, 그 사실을 기술 하는 것을 목적으로 삼는다. 현대 국어에서 ‘-도다’와 ‘-로다’의 문법적 제약 환경이 다르다. 그러나 15세기에는 ‘-도다’, ‘-로다’가 지금과 같은 분포를 보이지 않는다. ‘-로다’의 경우 현대국어에서는 ‘용언의 어간’ 뒤에 쓰이는 일이 없으나 중세, 근대 국어에서는 ‘동사, 형용사’ 어간 뒤에 붙어 쓰이기도 한다. 본 연구는 이렇게 현대 국어에서의 형태는 같지만 분포의 차이가 있었고 이에 분화가 일어나는 과정에 대해 접근해 보았다. ‘-로다’와 ‘-도다’가 의미상 비슷하나, ‘-로다’는 ‘이다’, ‘아니다’와 어울려 쓰이는 것으로, ‘-도다’는 용언 어간에 붙어 쓰이는 것으로 분화가 된 듯하다. 15ㆍ16세기 문헌에서 이미 ‘-리로다’의 형태로 나타나던 ‘-로다’는 ‘-리-’와 결합하나, 한편 ‘-도다’는 ‘-었-’과 결합하는 것으로 나타난다. 이 둘은 서로 분포를 달리하면서 ‘-로다’는 용언의 어간에 어울려 쓰이지 못하고, ‘-도다’는 ‘-었-’과 어울려 쓰이고, ‘-로다’는 ‘-었-’과는 쓰이지 못하는 것으로 판단해 볼 수 있겠다. This study covered “-doda and “-roda” from the fifteenth century to the eighteenth century. The goal was to describe the difference between the ending mother “-doda” and “-roda” in the combination. The fifteenth century’s emphasis follows a later period, but what remains in the modern language is “-doda, -roda,” which differs in the distribution of the two in the modern Korean language. In the sixteenth century and in the fifteenth century, “-roda” had already shown a pattern of combining with “-ri-,” but “-doda” was not used to match the tense expression. “-doda” all appeared behind verbs and adjectives until the eighteenth century. There is little difference between “-roda” and “-doda.” Then, the distributions of “ida” and “anida” and “-doda” and “-roda” became different. In fifteenth-sixteenth century literature, “-roda,” which had already appeared in the form of “-roda” combines with “-roda” but “-doda” with “-eoss-.” In this study, we found that restrictions may vary within the upper-level distribution. If we could have dealt with post-eighteenth century literature in more numbers, we could have looked at the phenomenon of the current use of “-doda” in the Korean language.
임수현 ( Im¸ Su-hyeon ),김윤형 ( Kim¸ Yoon-hyung ),김성우 ( Kim¸ Seong-woo ) 한국유기농업학회 2021 韓國有機農業學會誌 Vol.29 No.4
Since ancient times, ginseng has been cultivated in Korea, and related cultures are also rich. However, the domestic ginseng industry is currently facing many crises. As a source of ginseng, Korea needs to come up with a strategy to cope with the crisis of the ginseng industry and implement it efficiently and effectively using limited resources. This study used the Analytic Hierarchy Process (AHP) to analyze the priority of policies so that ginseng policies can be effectively implemented. The survey was conducted by dividing into two groups of experts, ‘policy managers’ and ‘field experts’. As a result of the study, policy managers seem to believe that the consumption of ginseng is important for the development of the ginseng industry. On the other hand, the field expert group believes that the government should take the initiative to increase the supply capacity of the ginseng industry. Through this study, it will be possible to help in determining the importance of policy, recognizing that the viewpoints of policy can be different for the ginseng industry to develop.
Suhyeon Kim,Si-Yeon Lee,Seoyoon Bae,Jin-Kwan Lee,Kyungrim Hwang,고현정,이창우 생화학분자생물학회 2020 Experimental and molecular medicine Vol.52 No.-
Psoriasis is one of the most common immune-mediated chronic inflammatory skin diseases. However, little is known about the molecular mechanism underlying the immunological circuits that maintain innate and adaptive immune responses in established psoriasis. In this study, we found that the Pellino1 (Peli1) ubiquitin E3 ligase is activated by innate pattern-recognition receptors (PRRs), such as Toll-like receptors (TLRs), and is highly upregulated in human psoriatic skin lesions and murine psoriasis-like models. Increased Peli1 expression is strongly correlated with the immunopathogenesis of psoriasis by activating hyperproliferation of keratinocytes in the S and G2/M phases of the cell cycle and promoting chronic skin inflammation. Furthermore, Peli1-induced psoriasis-like lesions showed significant changes in the expression levels of several T helper 17 (Th17)-related cytokines, such as IL-17a, IL-21, IL-22, IL-23, and IL-24, indicating that overexpression of Peli1 resulted in the sequential engagement of the Th17 cell response. However, the overexpression of Peli1 in T cells was insufficient to trigger psoriasis, while T cells were indispensable for disease manifestation. In summary, our findings demonstrate that Peli1 is a critical cell cycle activator of innate immunity, which subsequently links Th17 cell immune responses to the psoriatic microenvironment.
Variation of Liftoff height with diluents in Laminar Nonpremixed Lifted Flame
Suhyeon Oh(오수현),Kyu Ho Van(반규호),Chun Sang Yoo(유춘상),Oh boong Kwon(권오붕),Suk Ho Chung(정석호),Jeong Park(박정) 한국연소학회 2019 KOSCOSYMPOSIUM논문집 Vol.2019 No.11
With diluents (CO₂, N₂, and He) added to fuel or oxidizer stream, stationary lifted flame in non-premixed laminar coflow-jet has been studied. For CO₂ and N₂ diluted in oxidizer stream, liftoff height significantly increased with diluent mole fraction, while in He-diluted case liftoff height slightly increased. In fuel-diluted stream, liftoff height as adding He and N₂ slightly increased, but CO₂-diluted flame oscillated. To investigate change of liftoff height with diluent mole fraction, laminar burning velocity, effects of diluents, and buoyancy were considered.
Development of A Novel Framework for Liquid Bulk Cargo Volume Analysis
Suhyeon Kim,Wonho Sohn,Dongcheol Lim,Junghye Lee 대한산업공학회 2019 대한산업공학회 추계학술대회논문집 Vol.2019 No.11
Port cargo volume analysis is a challenging task for researchers because of non-stationary and highly volatile data affected by external factors. Nevertheless, it is important to establish an analysis system for the port cargo volume as the analysis of the port cargo volume can provide information on the establishment of strategies for port planning and management. In this paper, we propose a new framework to analyze port cargo volume, which consists of three parts: item segmentation, exploratory data analysis, and time series forecasting specifically for liquid bulk cargo volume. We firstly create an item dictionary containing main keywords to characterize each item and then categorize items based on the dictionary. Next, we perform an exploratory data analysis to understand the volume characteristics of each subcategorized item. Lastly, we use representation learning- and deep learning-based time series techniques to forecast their port volume and compare the results with existing statistical models. Experimental results for the three steps show the usefulness of our novel framework in several aspects including forecasting accuracy. It is believed that our proposed method will be a helpful system for stakeholders in port logistics to have insights and to make better decisions.
( Suhyeon Lee ),( Yeonsil Yu ),( Jinyoung An ),( Jeongmin Lee ),( Jin Sung Son ),( Young Kyung Lee ),( Sook Hee Song ),( Hyeok Kim ),( Suhyun Kim ) 대한결핵 및 호흡기학회 2014 Tuberculosis and Respiratory Diseases Vol.77 No.4
Here, we report a case of pulmonary paragonimiasis that was improved with initial anti-tuberculosis (TB) therapy but confused with reactivated pulmonary TB. A 53-year-old Chinese female presented with a persistent productive cough with foul smelling phlegm and blood streaked sputum. Radiologic findings showed subpleural cavitary consolidation in the right upper lobe (RUL). Bronchoscopic and cytological examination showed no remarkable medical feature. She was diagnosed with smear-negative TB, and her radiologic findings improved after receiving a 6-month anti-TB therapy. The chest CT scans, however, obtained at 4 months after completion of anti-TB therapy showed a newly developed subpleural consolidation in the RUL. She refused pathologic confirmation and was re-treated with anti-TB medication. Nevertheless, her chest CT scans revealed newly developed cavitary nodules at 5 months after re-treatment. She underwent thoracoscopic wedge resection; the pathological examination reported that granuloma caused by Paragonimus westermani. Paragonimiasis should also be considered in patients assessed with smear-negative pulmonary TB.