• Title/Summary/Keyword: Domestic study

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Concentration Response Functions for Particulate Matter related Health Risk Assessment in South Korea (입자상 대기오염물질의 건강 위해성 평가를 위한 국내 농도반응함수 도출)

  • Ha, Jongsik
    • Journal of Environmental Health Sciences
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    • v.43 no.3
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    • pp.202-213
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    • 2017
  • Objectives: HRA (Health Risk Assessment) is an important tool for measuring the health impacts of air pollution. HRA is already being used widely as an important reference for crafting air pollution policies. However, the absence of a domestic CRF (Concentration Response Function) standard, which is a main component for HRA, could cause confusion amongst policy-makers. The purpose of this study is to tabulate a domestic CRF standard for a PM (Particulate Matter)-related HRA. Methods: This study suggested a domestic CRF standard for HRA thorough a literature review. The literature review for meta-analysis was limited to the English language for epidemiological studies published from January 1980 to March 2016. This meta-analysis was conducted by assuming both fixed- and random-effects of CRF. In addition, studies that reported HRA of air pollution for WHO (World Health Organization), the EC (European Commission), and the EPA (Environmental Protection Agency) were reviewed to compare the CRFs of South Korea to the recommended CRFs of WHO, the EC, or the EPA. Additionally, a domestic CRF standard was supplemented by these. Results: Nineteen studies were selected for the CRF for South Korea. Fifty-three CRFs were derived for meta-analysis. CRFs with a standard for PM-related HRA were divided according to the following four criteria: air pollution, exposure characteristics, type of health impact, and age group. Finally, a domestic CRF standard was created comprised of 21 CRFs. Among these, six CRFs were derived from the results of foreign HRA studies. Conclusions: This study is important in that a domestic CRF standard is first suggested. In addition, this study suggests a further area of study for using HRA as a policy tool and a direction of epidemiological study.

Forecasting of Domestic Beef Demand Using Exponential Smoothing Model (지수평활모형을 이용한 국내 소고기 수요예측)

  • Kim, Woo-Seok;Um, Ji-Bum
    • Korean Journal of Organic Agriculture
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    • v.30 no.2
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    • pp.231-239
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    • 2022
  • The purpose of this study is to provide meaningful information for various stakeholders' decision-making process through forecasting of domestic beef demand. Three different exponential smoothing models were evaluated, and a double exponential smoothing model was used to forecast domestic beef demand based on time-series data, As a result of the forecast, domestic beef consumption is expected to increase by 37,000 to 40,000 tons per year from 2020 to 2025.

Studies on the Physical and Mechanical Properties of Imported and Domestic Corks (수입(輸入)코르크와 국산(國産)코르크의 물리(物理)·기계적(機械的) 성질(性質)에 관(關)한 연구(硏究))

  • Kim, Byung-Ro
    • Journal of the Korean Wood Science and Technology
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    • v.21 no.4
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    • pp.45-54
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    • 1993
  • This study examines the differences in structures, physical and mechanical properties between domestic(Quercus variabilis Blume) and foreign(Quercus suber L.) corks. The results obtained are as follows: 1. The cork tissue consists of cork cells, lenticels, sclereids and dark-brown zone. There was a significant difference in ratio of cork cells between foreign cork(93 %) and domestic cork(87 %). The ring width and width of late cork of the foreign cork were wider than those of domestic cork. But the percentage of late cork of domestic cork was richer than that of foreign cork. The size of cork cell of foreign cork was larger by about two times than that of domestic cork. 2. The density was slightly higher in domestic cork(0.22 g/$cm^3$) than in foreign cork(0.19 g/$cm^3$). During first 24 hours, the amount of water absorption of the foreign cork was greater than that of domestic cork. However, after 24 hours, the tendency was reversed. The level of EMC was higher in domestic cork than in foreign cork. Total shrinkage in the radial and tangential directions was larger in domestic cork than tn foreign cork. In the longitudinal direction, the tendency was reversed. There was no difference in total swelling in three woody directions between the two corks. 3. The modulus of elasticity in compression in the logitudinal and tangential direction was higher in domestic cork than in foreign cork, but the tendency was reversed in the radial direction. Both corks showed 95% of recovery rate after 24 hours when they were compressed by 0.5. There were no differences in tension strength and Brinell,s hardness bet ween domestic and foreign corks.

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Determination of Heavy Metal Contents in Medicinal Herb (유통 한약재의 중금속 함량 조사)

  • Lee, Mi-Kyung;Park, Jung-Suk;Lim, Hyun-Cheol;Na, Hwan-Sik
    • Food Science and Preservation
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    • v.15 no.2
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    • pp.253-260
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    • 2008
  • Comparative study was performed on heavy metal contents among domestic herbal medicines and imported one. The heavy metal contents in 89 samples of 65 types of herbal medicines were measured by inductively coupled plasma atomic emission spectrometry (ICP-AES) and mercury analyzer. The mean values of heavy metal contents (mg/kg) for herbal medicines were as follows: Hg, 0.010 (domestic: 0.010, imported: 0.010); Pb, 0.380 (domestic: 0.311, imported: 0.449); Cd, 0.080 (domestic: 0.101, imported: 0.059); As, 2.085 (domestic: 1.845, imported: 2.324); Mn, 31.564 (domestic: 33.844, imported: 29.283); Zn, 15.436 (domestic: 18.703, imported: 12.168); Cu, 3.406 (domestic: 3.374, imported: 3.437); Fe, 134.944 (domestic: 108.327, imported: 161.561). The measured values of Hg, Pb and Cd of domestic and imported herbal medicines showed lower levels than the recommended levels of those in herbal medicines by WHO/PHARM (Pb : not more than 5 mg/kg, Cd : not more than 0.3 mg/kg). This results will he used as a basic data for the future legislation on the regulation and control of heavy metal contents of herbal medicines.

An Analysis of Menswear Brands in the Current Domestic Fashion Market

  • Jang, Eunyoung
    • Journal of Fashion Business
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    • v.19 no.6
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    • pp.101-111
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    • 2015
  • This study aims to analyze the current state of menswear in the domestic fashion market and the trend of new menswear brands. In addition to this, a comparative analysis of domestic and foreign menswear brands will be done to provide baseline data for the domestic brands in regards to strategic direction in the coming years. The study used reports published by Samsungdesign.net, which provided trends of 110 new brands from 2005 to 2014, in order to analyze the trends of new menswear brands launched during that period. Menswear brand information in the Korean Fashion Brand Annual, of which there were 168, were utilized to research the current state of the brands in the domestic market. As a results, menswear is expected to become more sensitive to trends and designs thanks to steady launchings of menswear brands within character casual zoning for the past 10 years and active brand launchings within contemporary zoning in the last 5 years. Also, as more brands are targeting men in their 20's as their main customers, it suggests that menswear brands are striving for a younger mindset. In terms of pricing, prestige and budget line launchings they seem to be dwindling, while bridge brands are increasing. This shows that customers are demanding luxury items at a reasonable price. Since there are higher ratio of foreign brands in dress shirts and contemporary zoning, domestic brands need to develop and produce more high quality clothes within these zonings.

A Study on Economic Ripple Effect and Export Connection Method of Food Industry (식품산업의 경제적 파급효과와 수출 연계 방안에 관한 연구)

  • Chai, Jong-Hun
    • International Commerce and Information Review
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    • v.12 no.1
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    • pp.225-250
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    • 2010
  • The purpose of this study is to grasp the ripple effect of food industry, which is rising as the prominent industry of the future and has a high forward & backward ripple effect, on domestic economy and other industries through Industrial Input-Output Analysis and suggest the export connection method for the development of food industry in the future. As an analysis result, it was found that the effect on product inducement and employment inducement was very high. Like that, it is necessary to establish export connection strategy to escape from narrow domestic market and advance into world market in order to develop food industry, which has a high ripple effect on domestic market. For the export connection of food industry, it is possible to enlarge overseas market demand of domestic food industry by providing domestic food companies with export-concerned information such as overseas export market information and food market information, advertising world market for domestic food industry actively through the globalization of Korea food, securing food processing technology, removing export unavailability risk through the export insurance policy and advertizing the safety of food industry through the reinforcement of food safety control standard and penalty standard.

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A Study on Faceted Navigation of the Public Libraries (공공도서관의 패싯 내비게이션에 관한 연구)

  • Yoo, Yeong-Jun
    • Journal of Korean Library and Information Science Society
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    • v.45 no.1
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    • pp.339-358
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    • 2014
  • This study aims to construct faceted navigation useful for domestic users through analyzing English and North American public libraries' faceted navigations. The 19 domestic libraries and the 12 foreign libraries has been chosen for analyzing their unique facets. Although the domestic libraries' facets had no differences to the domestic universities' facets, the North American libraries have their unique facets. Those facets are target audience, genre, library list, user tags, and availability related facets and the facets are mainly to improve user's usability in using library catalog. Adopting the facets in domestic public libraries by using Fixed-Length data elements of KORMARC, domestic public libraries will enhance usability of library users in retrieving library materials.

Design Trends of Domestic and Foreign Fashion Socks (국내외 패션삭스의 디자인 경향)

  • Pan, Ruinan;Kim, Jiyoung
    • Journal of Fashion Business
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    • v.18 no.1
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    • pp.101-117
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    • 2014
  • The purpose of this study is to investigate domestic and foreign fashion sock design trends and suggest a proposal for competitive fashion sock design developments. The methods of this study are undertaken by literature review and design trend analysis. For the design trend analysis, in the case of domestic cases, 209 pictures from 7 brands, and in the case of foreign cases, 870 pictures from 10 brands are being chosen. In terms of analysis criteria, the colors, patterns, lengths and images of both the domestic and foreign socks are being compared. As a result, among the fashion foreign socks, more than 4 colors are the most common, and dark & dark grayish, strong & deep color tones are the most popular. Also, the stylized, geometrical patterns, and casual, cute and unique images are generally used. In the case of domestic fashion socks, 2 colors are the most common with vivid, strong & deep color tones as the most popular. Furthermore the patterns are limited to geometric patterns, and the images of socks are inclined to be too casual. To enhance the competitiveness of Korean sock designs, the variety of patterns and images are essential.