• The Korean Journal of Financial Management
• /
• v.27 no.2
• /
• pp.63-84
• /
• 2010

We investigate whether FX hedging materially increases firm value by testing the valuation effect of Foreign Exchange Risk Insurance in Korea, using our sample of 84 listed firms with 617 observations between 2000 and 2008, Employing Tobin's Q as a proxy of firm value and foreign exchange risk insurance as a proxy of hedging instrument, we find a positive relation between firm value and the use of foreign exchange risk insurance. The hedging premium is statistically significant and is on average 7.4% of sample firm value. We also find our empirical results consistent with the preceding evidence that firm uses the hedging instrument in order to alleviate economic frictions and then hedging causes an increase in firm value.

• Archives of design research
• /
• v.14 no.4
• /
• pp.57-64
• /
• 2001

The Korea's automotive industry has been changed since 1990's for the global reform of the automotive industry even though the rapid growth of domestic market from the late 1980's to early 1990's The cultural understanding for an automobile in the Korea society has been relatively lacked by the political reason, which focused on the economic growth through the industrialization. This works as a limit which caused by the point of view which is concentrated into the automotive industry as an economy developing tool. As much as being observed in the advanced nations which have the long history and huge scale of the automotive industry, an automobile is not only a single product, but also a way of life which has a cultural background. It is possible to develop a competitive quality and design with an understanding the cultural background. And the most important thing to the Korean automotive industry is a uniqueness with the cultural character which is gained by the cultural understanding of automobile as in the public Therefore the contribution of infrastructure of Korean automotive industry and culture would become more important in the future.

• Journal of the Economic Geographical Society of Korea
• /
• v.23 no.3
• /
• pp.209-228
• /
• 2020

The purpose of this study is to analyze the changes in trade and industry of Korea and suggest implications from the perspective of global value chains following the spread of COVID-19. To this end, products for prevention of epidemics which is directly related to COVID-19 and IT industries with high GVC participation were analyzed. Due to the spread of COVID-19, the variation in import and export of products for prevention of epidemics was large. In the case of masks, import and export of final goods changed drastically, but the change in intermediate goods was not significant relatively. Korea's IT industry has been differentiated according to major trading partners amid overall changes in GVCs which is summarized as higher forward participation and lower backward participation. While no particular change resulted from COVID-19 has yet been made directly, the need for diversification strategies should be taken into account at a time when the production links with China and Vietnam are close and the dependence on trade with these countries is high. The COVID-19 is still in progress, requiring corporate strategies and policy efforts to respond to changes in GVCs in the post-COVID-19 era.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2012.05a
• /
• pp.3-3
• /
• 2012

자원식물은 인간의 천연물에 대한 관심 고조와 미래 생물자원으로서의 경제적 가치가 재인식되어 미국을 비롯한 선진국은 오래전부터 유용한 식물자원 보존과 이를 이용한 산업화에 정부가 앞장서 추진하고 있다. 더욱이 우리나라는 국토면적에 비해 많은 식물종이 분포하고 뚜렷한 4계절과 다양한 토양특성으로 우수한 기능성식물자원이 많으며 이들 식물자원의 이용과 효능에 대한 풍부한 지식이 전통적으로 이어져 왔다. 그럼에도 불구하고 우수한 자원식물에 대한 보존과 이용이 과학화 체계화되지 못하여 세계적인 품종이나 제품개발은 미흡한 실정이다. 그동안 우리나라는 토종자원에 대한 관심과 꾸준한 연구개발로 농촌진흥청 보존 농업유전자원은 세계 6위 수준('10년말 291천점) 이며, 멀티기능 유용물질 함유 작물 개발 및 실용화 기술수준도 기술력 지수 세계7위로 높게 평가되고 있다. 그러나 이들 자원식물로부터 유용물질을 이용하여 세계시장을 선도하는 천연물신약, 건강기능성식품, 한방화장품, 천연 색소 및 향료 등의 제품개발은 미흡하여 앞으로 유망 자원식물을 이용한 체계적이고 과학적인 고부가 산업 육성을 위한 집중적인 투자가 필요한 시점이다. 자원식물을 이용한 천연물 신약개발은 고부가가치 제품과 산업재산권 확보가 가능하므로 수입 대체와 기술 및 제품수출이 충분히 이루어질 수 있다고 보여 현재 연구개발 중인 신약후보 도출 및 임상개발 과제의 수요를 반영한 후 단계별 대규모 신약개발 노력이 필요하다 하겠다. 건강기능 식품 개발은 고령사회 진입과 노령인구 증가로 노화억제 및 고령자 건강유지용 식품비중이 지속적으로 높아질 것으로 추정되어 약용식물을 소재로 개인 맞춤형 나노바이오 건강기능성 식품 개발을 통한 다양한 제품개발이 요구된다. 또한 우리나라 화장품분야의 전반적인 기술수준은 세계최고 기술의 62% 수준이나 화장품 소재의 자원식물 발굴과 나노기술 접목을 통한 효능의 극대화는 소비자의 웰빙 트랜드와 외국화장품과의 차별화 전략에 맞물려 국내 한방화장품의 세계화가 가능한 품목 중 하나이다. 식용 및 염색용 색소도 자원식물이 풍부하고 천연색소 시장이 크게 확장되고 있어 자원식물 중 경제성과 기술적 개발 가능성을 고려하여 단계적인 개발이 요구된다. 특히, 우리의 식물자원, 전통지식, 과학기술이 통합되어 효능을 현저하게 상승시키는 천연물신약, 건강보조식품, 화장품 등이 개발된다면 세계시장을 선도할 날도 멀지 않을 것으로 기대한다.

• Elastomers and Composites
• /
• v.48 no.4
• /
• pp.300-305
• /
• 2013

Part shrinkage in injection molding is inevitable phenomenon. Thus, it is necessary not only study on the reducing part shrinkage but characterization of part shrinkage. In this study, part shrinkage in injection molded 2.5 dimensional annular shaped specimens has been studied using glass fiber reinforced PC. Annular shaped specimens were designed with various sizes of outer diameter and thickness. Injection temperature, packing time and packing pressure were selected for operational conditions. Profile variations of outer and inner diameters of molded specimens for various operational conditions were investigated. Sizes of outer and inner diameters of injection molded specimens were smaller than the sizes of mold. Part shrinkage decreased as outer diameter and thickness increased. Part shrinkage showed anisotropic behavior and it depended upon gate location. Subsequently, molded specimens were not circular but oval in shape, and showed the largest shrinkage in the direction of gate. It was realized that the mold design such as gate design is important to control the shape of molded products.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
• /
• v.25 no.3
• /
• pp.125-130
• /
• 2019

Shock and vibration inputs are transmitted from the vehicle through the packaging to the fruit. Inside, these cause sustained bouncing of fruits against each other and container wall. These steady state vibration input may cause serous fruit injury, and this damage is particularly severe whenever the fruit inside the package is free to bounce, and is vibrated at its resonance frequency. The determination of the resonance frequencies of the fruit and vegetables may help the packaging designer to determine the proper packaging system providing adequate protection for the fruit, and to understand the complex interaction between the components of fruit when they relate to expected transportation vibration inputs. Instrumentation and technologies are described for determining the vibration response characteristics of the pears for exporting with frequency range from 10 to 200 Hz, sweep rate of 1 octave/min, sweep method of logarithmic up and down and acceleration levels of 0.2, 0.4, 0.6, 0.8 and 1.0 G considering the domestic transportation environment. The resonance frequency of the pears ranged from 49.04 to 87.16 Hz and the amplitude at resonance was between 0.96 and 4.02 G in test frequency band and acceleration level. The resonance frequency and amplitude at resonance frequency band of the pears decreased with the increase of the sample mass. The multiple nonlinear regression equations for predicting the resonance frequency of the pears were developed using the independent variables such as mass, input acceleration.

• Korean Journal of Food Science and Technology
• /
• v.26 no.3
• /
• pp.272-277
• /
• 1994

The microbial populations of exportable and domestic white ginseng powders, which have been problems in quality control, were higher than the legally-permissive level of microorganisms as $5{\times}10^{4}$/g in total bacteria and as negative coliforms. Various microorganisms contaminated in the sample were effectively decontaminated by gamma irradiation at below 10 kGy as well as ethylene oxide (EO) fumigation. The radiosens.tivity of microorganisms was the highest in coliforms, followed by molds and aerobic bacteria ($D_{10}$: 1.25 kGy). The good microbiological quality could be retained in white ginseng powders for more than 7 months of storage at $30{\pm}2^{\circ}C$ irrespective of relative humidities if products are prepared with a lower moisture content below 10% and treated by gamma irradiation at 5 to 10 kGy in an airtight packaging.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.13 no.3
• /
• pp.360-365
• /
• 2003

In this paper, GMDH(Croup Method of Data Handling) algorithm which is proved to be more excellent in efficiency and accuracy of practical use of data is applied to electric power demand forecasting. As a result, it became much easier to make a choice of input data and make an exact prediction based on a lot of data. Also, we considered both economy factors(GDP, export, import, number of employee, number of economically active population and consumption of oil) and climate factors(average temperature) when forecasting. We assumed target forecast period from first quarter 1999 to first quarter 2001, and suggested more accurate forecasting method of electric power demand by using 3-step computer simulation processes(first process for selecting optimum input period, second for analyzing time relation of input data and forecast value, and third for optimizing input data) for improvement of forecast precision. The proposed method can get 0.96 percent of mean error rate at target forecast period.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.11 no.1
• /
• pp.109-113
• /
• 2011

Recently, according to the development of ubiquitous computing, the u-GIS which not only used in u-Transport, u-Care, u-Fun, u-Green, u-Business, u-Government, and u-City but also used to provides various spatial information such as the location of user is being the core technology of the ubiquitous computing environment. In this paper, we implemented an mobile spatio-temporal Query Processing Systems for handling the Spatio-Temporal Data in mobile equipment.The mobile spatio-temporal Query Processing Systems provides the spatio-temporal data type and the spatio-temporal operator that is expanded by the spatial data type and the spatial operator from OepenGIS "Simple Feature Specification for SQL". It supports arithmetic coding compression techniques that is considered with a spatio-temporal data specific character. It also provides the function of data cashing for improving the importation and exportation of the spatio-temporal data between a embedded spatio-temporal DBMS and u-GIS server.

• Environmental and Resource Economics Review
• /
• v.28 no.4
• /
• pp.497-526
• /
• 2019

The importance of "decoupling" to maintain economic growth and reduce greenhouse gases is emerging as the world has been mandated to reduce greenhouse gases since the 2015 Paris Agreement. This study covered 63 countries from 1980 to 2014 and analyzed the main characteristics and causes of decoupling phenomenon between economic growth and carbon emissions. In this study, the degree of decoupling was measured every five years. The analysis found that the decoupling rate of OECD countries and countries with large incomes was high, and that the decoupling phenomenon has accelerated worldwide since the 2000s. However, the degree of decoupling was different depending on the national characteristics. According to the results of dynamic panel model, the growth rate of manufacturing and the proportion of exports hampered decoupling, while the proportion of human capital and renewable energy had a positive effect on decoupling. Also income had a inverse U-shape non-linear effect on decoupling.