• 농업과학연구
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• 제50권3호
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• pp.539-549
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• 2023

Domestic processed food exports might increase due to the free trade agreement (FTA) and spread of the Korean Wave, Hallyu. However, the share of the domestic raw materials in the domestic processed food industry is very low at 31.4%, which limits the spillover effect on domestic agriculture. Therefore, we selected frozen dumplings as a representative processed food whose exports are growing rapidly and conducted a multiple regression analysis to examine the effects of Hallyu and FTA variables on the frozen dumpling exports. We tried to link them to an increase in agricultural income through the expansion of demand for the domestic raw materials. This study analyzed tariff indicator as the FTA variable, cosmetics export value indicator as the Hallyu Wave variable, and other variables expected to change the trade environment such as gross domestic product (GDP) and the relative exchange rate by country as the key explanatory variables that affect changes in the trade environment. The analysis showed that the core hypothesis, the Hallyu variable and the FTA variable, have a positive impact on frozen dumpling exports. Frozen dumpling exports are expected to increase as the FTAs and the spread of Hallyu are expected to continue for the foreseeable future. Therefore, we should seek ways to increase the proportion of domestically produced ingredients in the frozen dumplings to spread the economic impact to domestic agriculture. We reviewed previous studies and determined, the price-related factors play a major role in the use of imported ingredients, and that price stability and competitiveness are essential to increase the share of the domestically produced ingredients. Based on these conclusions, we reviewed the current status of food industry-related policies and determined measures needed to expand the use of domestically produced ingredients.

• 한국도서관정보학회지
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• 제38권2호
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• pp.13-30
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• 2007

본 연구의 목적은 한 조직 성원으로서 도서관 사서가 지향하는 역할의 의식을 규명하는데 있다. 다시 말하면 본 연구는 도서관 사서의 역할지향에 관한 태도 신념 등 주관적 구조의 유형이 어떠한지를 밝히는데 초점을 두고 있다. Q 표본은 도서관 사서의 역할지향의 태도 신념 등 가치체계로 구성된 36개의 진술문으로 구성되었으며, P 표본은 23명의 도서관 사서로 이루어졌다. 본 연구의 조사는 2005년 4월 15일부터 22일까지 8일간 이루어졌다. 본 연구의 결과는 다음과 같다. (1) 이용자지향형: 이들은 주로 이용자와의 관계에 관심을 둔 집단으로 도서관 이용자에게 좋은 서비스를 능동적으로 제공해주는 것에 초점을 두었다. (2) 조직지향형: 이들은 주로 도서관의 사회적 기능과 조직성원으로서의 사서의 역할을 강조하였다. 이들은 조직의 평가를 매우 중시하며 안정된 조직문화를 기대하였다. 이들 성향은 기혼자들에서 두드러진다. (3) 전문가지향형: 이들은 사서로서의 역할수행과 그것의 만족감에 초점을 둔 입장이다. 이들은 사서로서의 직업에 대하여 높은 자긍심을 가지고 있으며 전문인으로서의 역할수행에 최선을 다하는 형으로 주로 여성사서에서 두드러진다. 둘째, 제1유형은 이용자지향적인 측면(예, 이용자와 대화, 욕구충족, 자긍심 등)의 관심을 두고 있다. 제2형은 조직지향적인 측면(예, 조직의 경제적 안정 및 성장, 조직의 규범을 준수하고 조직성원들의 평가 등)에 관심을 두었다. 제 3형은 전문가지향적인 측면(창의력, 전문적 능력을 배양한 재투자 및 재교육의 중요성, 전문가로서의 만족된 역할수행과 자긍심 보유 등)에 초점을 두었다.

• 한국문헌정보학회지
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• 제56권1호
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• pp.5-25
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• 2022

대다수 공공도서관은 지역주민을 지식정보센터, 복합문화공간, 평생학습시설, 제3의 장소다. 이러한 정체성과 역할에 충실할 때 회자되는 사회적 오마주가 지식정보 아고라, 문화기반시설, 도시의 거실, 민중의 대학이다. 그런데 국가나 지역을 불문하고 공공도서관 상호간에 상당한 격차가 존재하면 지역별 주민의 접근·이용의 불평등을 초래하고, 정보격차 및 지역격차의 동인으로 작용하며, 사회격차 및 문화복지 격차로 귀결될 수밖에 없다. 이에 본 연구는 공공도서관을 지역문화시설의 요체로 간주하고 지역 간의 상대적 격차가 문화격차를 유발한다는 전제 하에 시도별 및 경북지역의 시군별 입지계수, 투입지표(서비스 대상인구, 연면적, 직원수와 사서수, 운영예산과 자료구입비, 도서수), 산출지표(자료실 이용자수, 대출책수, 강좌 참가수)를 이용하여 상대적 격차를 분석하였다. 그 결과를 바탕으로 투입·산출지표의 상관 및 회귀분석을 통해 도출된 핵심요소를 중심으로 경북지역 시군별 공공도서관의 지표별 관리모형 및 격차해소 방안을 제시하였다.

• 한국해양공학회지
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• 제37권2호
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• pp.58-67
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• 2023

While extensive research is being conducted to reduce greenhouse gases in industrial fields, the International Maritime Organization (IMO) has implemented regulations to actively reduce CO₂ emissions from ships, such as energy efficiency design index (EEDI), energy efficiency existing ship index (EEXI), energy efficiency operational indicator (EEOI), and carbon intensity indicator (CII). These regulations play an important role for the design and operation of ships. However, the calculation of the index and indicator might be complex depending on the types and size of the ship. Here, to calculate the EEDI of two target vessels, first, the ships were set as Deadweight (DWT) 50K container and 300K very large crude-oil carrier (VLCC) considering the type and size of those ships along with the engine types and power. Equations and parameters from the marine pollution treaty (MARPOL) Annex VI, IMO marine environment protection committee (MEPC) resolution were used to estimate the EEDI and their changes. Technical measures were subsequently applied to satisfy the IMO regulations, such as reducing speed, energy saving devices (ESD), and onboard CO₂ capture system. Process simulation model using Aspen Plus v10 was developed for the onboard CO₂ capture system. The obtained results suggested that the fuel change from Marine diesel oil (MDO) to liquefied natural gas (LNG) was the most effective way to reduce EEDI, considering the limited supply of the alternative clean fuels. Decreasing ship speed was the next effective option to meet the regulation until Phase 4. In case of container, the attained EEDI while converting fuel from Diesel oil (DO) to LNG was reduced by 27.35%. With speed reduction, the EEDI was improved by 21.76% of the EEDI based on DO. Pertaining to VLCC, 27.31% and 22.10% improvements were observed, which were comparable to those for the container. However, for both vessels, additional measure is required to meet Phase 5, demanding the reduction of 70%. Therefore, onboard CO₂ capture system was designed for both KCS (Korea Research Institute of Ships & Ocean Engineering (KRISO) container ship) and KVLCC2 (KRISO VLCC) to meet the Phase 5 standard in the process simulation. The absorber column was designed with a diameter of 1.2-3.5 m and height of 11.3 m. The stripper column was 0.6-1.5 m in diameter and 8.8-9.6 m in height. The obtained results suggested that a combination of ESD, speed reduction, and fuel change was effective for reducing the EEDI; and onboard CO₂ capture system may be required for Phase 5.

• 한국콘텐츠학회논문지
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• 제20권11호
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• pp.534-545
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• 2020

초고령화 사회에서 증가한 독거노인의 인구는 많은 문제들을 야기하고 있다. 홀로 살아가고 있는 노인들은 상실감과 자살 생각이 높아질 수 있음에 따라 본 연구는 주거형태와 스마트폰이 이들의 상실감과 자살 생각에 미치는 영향을 분석하였다. 본 연구에서 2G폰을 사용하는 노인들은 스마트폰을 사용하는 이들보다 낮은 사회적 역할과 관계를 느끼는 것으로 나타났다. 또한, 가족 구성원 또는 배우자와 함께 살고 있는 노인들은 독거노인들보다 낮은 자살 생각을 하는 것으로 밝혀졌다. 그렇지만 사회적 역할과 관계의 상실감은 거주 형태보다 스마트폰의 사용 실태 여부에 더 유의한 영향을 받는 것으로 나타났다. 게다가, 스마트폰을 사용하는 노인들은 사회적 역할과 관계에 대해 낮은 수준의 상실감을 보여주고 있는 것으로 나타났다. 노인들 사이에서 신체적 건강, 사회적 역할, 관계의 상실감은 자살 생각을 높이는 주요한 요인으로 밝혀졌다는 점에서 놀랍게도 경제적 능력만이 자살 생각의 지표가 아니었음을 확인하였다.

• 대한의생명과학회지
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• 제23권4호
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• pp.310-320
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• 2017

Ginseng has been widely used for traditional medicine in eastern Asia and is known to have inhibitory effects on cardiovascular disease (CVD) such as thrombosis, atherosclerosis, and myocardial infarction. Because, platelet is a crucial mediator of CVD, many studies are focusing on inhibitory mechanism of platelet functions. Among platelet activating molecules, thromboxane $A_2$ ($TXA_2$) and P-selectin play a central role in CVD. $TXA_2$ leads to intracellular signaling cascades and P-selectin plays an important role in platelet-neutrophil and platelet-monocyte interactions leading to the inflammatory response. In this study, we investigated the inhibitory mechanisms of total saponin fraction from Korean red ginseng (KRG-TS) on $TXA_2$ production and P-selectin expression. Thrombin-elevated $TXA_2$ production and arachidonic acid release were decreased by KRG-TS dose (25 to $150{\mu}g/mL$)-dependently via down regulation of microsomal cyclooxygenase-1 (COX-1), $TXA_2$ synthase (TXAS) activity and dephosphorylation of cytosolic phospholipase $A_2$ ($cPLA_2$). In addition, KRG-TS suppressed thrombin-activated P-selectin expression, an indicator of granule release via dephosphorylation of mitogen-activated protein kinases (MAPK). Taken together, we revealed that KRG-TS is a beneficial novel compound inhibiting $TXA_2$ production and P-selectin expression, which may prevent platelet aggregation-mediated thrombotic disease.

• Asian Pacific Journal of Cancer Prevention
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• 제15권1호
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• pp.245-252
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• 2014

Human METCAM/MUC18, a cell adhesion molecule (CAM) in the immunoglobulin-like gene super family, plays a dual role in the progression of several epithelium cancers; however, its role in the nasopharyngeal carcinoma (NPC) remains unclear. To initiate the study we determined human METCAM/MUC18 expression in tissue samples of normal nasopharynx (NP), NPCs, and metastatic lesions, and in two established NPC cell lines. Immunoblotting analysis was used for the determination in lysates of frozen tissues, and immunohistochemistry (IHC) for expression in formalin-fixed, paraffin-embedded tissue sections of 7 normal nasopharynx specimens, 94 NPC tissue specimens, and 3 metastatic lesions. Human METCAM/MUC18 was expressed in 100% of the normal NP, not expressed in 73% of NPC specimens (or expressed at very low levels in only about 27% of NPC specimens), and expressed again in all of the metastatic lesions. The level of human METCAM/MUC18 expression in NPC tissues was about one fifth of that in the normal NP and metastatic lesions. The low level of human METCAM/MUC18 expression in NPC specimens was confirmed by a weak signal of RT-PCR amplification of the mRNA. Low expression levels of human METCAM/MUC18 in NPC tissues were also reflected in the seven established NPC cell lines. These findings provided the first evidence that diminished expression of human METCAM/MUC18 is an indicator for the emergence of NPC, but increased expression then occurs with metastatic progression, suggesting that huMETCAM/MUC18, perhaps similar to TGF-${\beta}$, may be a tumor suppressor, but a metastasis promoter for NPC.

• Journal of Astronomy and Space Sciences
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• 제29권3호
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• pp.259-267
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• 2012

Polar cap potential has long been considered as an indicator for the amount of energy flowing in the magnetosphere-ionosphere system. Thus, the estimation of polar cap potential is important to understand the physical process of the magnetosphere. To estimate the polar cap potential in the Northern Hemisphere, merging electric field by Kan & Lee (1979) is adopted. Relationships between the PC index and calculated merging electric field ($E^*$) are examined during full-time and storm-time periods separately. For this purpose Dst, AL, and PC indices and solar wind data are utilized during the period from 1996-2003. From this linear relationship, polar cap potential (${\Phi}^*$) is estimated using the formula by Doyle & Burke (1983). The values are represented as $58.1{\pm}26.9$ kV for the full-time period and $123.7{\pm}84.1$ kV for a storm-time period separately. Considering that the average value of polar cap potential of Doyle & Burke (1983) is about 47 kV during moderately quiet intervals with the S3-2 measurements, these results are similar to such. The monthly averaged variation of Dst, AL, and PC indices are then compared. The Dst and AL indices show distinct characteristics with peaks during equinoctial season whereas the average PC index according to the month shows higher values in autumn than in spring. The monthly variations of the linear correlation coefficients between solar wind parameters and geomagnetic indices are also examined. The PC-AL linear correlation coefficient is highest, being 0.82 with peaks during the equinoctial season. As with the AL index, the PC index may also prove useful for predicting the intensity of an auroral substorm. Generally, the linear correlation coefficients are shown low in summer due to conductance differences and other factors. To assess the role of the PC index during the recovery phase of a storm, the relation between the cumulative PC index and the duration is examined. Although the correlation coefficient lowers with the storm size, it is clear that the average correlation coefficient is high. There is a tendency that duration of the recovery phase is longer as the PC index increases.

• 한국환경보건학회지
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• 제34권2호
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• pp.117-123
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• 2008

Allergic diseases have been dramarically increased over recent years, especially in industrialized countries. Oxidative stress has been believed to playa significant role in the occurrence of the allergic inflammatory responses. Although previous studies concerning oxidative stress and systemic inflammation have been reported, few data is available, and other allergic diseases, except for asthma, are hardly studied about the association with oxidative stress. This study evaluated the relationship between allergic disease and Malondialdehyde (MDA) as an indicator of oxidative stress. The study population was 197 male adults living in an industrial area. The ISAAC questionnaire was used to confirm wheezing and rhinitis, and atopy was evaluated by skin prick test. MDA was analyzed by spectrophotometer. To examine bronchial hyperresponsiveness (BHR), methacholine test was performed, and the index of bronchial responsiveness (BR index) was calculated. We used multivariate logistic regression model and general linear model with SAS program. We found significant associations of MDA with brindex (p=0.023), rhinitis (p=0.016), atopy (p=0.03), adjusted by age, smoking, and body mass index (BMI). On the contrary, there was no significant difference of MDA with the status of asthma. Our result suggests that oxidative stress may playa major role in the occurrence of allergic response in male adults.

• Asian Pacific Journal of Cancer Prevention
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• 제14권10호
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• pp.5883-5890
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• 2013

Previously, we demonstrated overexpression of semaphorin4D (SEMA4D, CD100) to be closely related to tumor angiogenesis in epithelial ovarian cancers (EOCs). However, the function and expression of SEMA4D in the EOC microenvironment has yet to be clarified in detail. In this study, we confirmed that overexpression of SEMA4D in primary tumors and ascites was related to low differentiation, platinum resistance and a refractory status (P<0.05), while high M2 macrophage count and percentage were evident in EOC patients with advanced FIGO stage and platinum resistance (P<0.05), using immunohistochemistry, enzyme-linked immunosorbent assay (ELISA), and fluorescence-activated cell sorting (FACS), respectively. The data showed correlations of SEMA4D expression and M2 macrophage counts in primary tumors and M2 macrophage percentage in ascites (r=0.281 and 0.355, each P<0.05). In the Cox proportional hazard mode, SEMA4D expression was an independent indicator of overall survival (OS) and progression-free survival (PFS) for EOC patients. Furthermore, higher expression of SEMA4D in ovarian cancer cell lines (SKOV3, A2780, and SW626) and their supernatants were found than that in a human primary cultured ovarian cell and its supernatant by reversed transcript PCR (RT-PCR), Western blotting and ELISA, respectively. Interestingly, peripheral blood monocytes (MOs) tended towards the M2-polarized macrophage phenotype ($CD163^{high}$) in vitro after human recombined soluble SEMA4D protein stimulation. These findings suggest that SEMA4D might possibly serve as a reliable tool for early and accurate prediction of EOC poor prognosis and could playan important role in promoting tumor dissemination and metastasis in the EOC microenvironment. Thus SEMA4D and its role in macrophage polarization in EOC warrants further study.