• 한국식품위생안전성학회지
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• 제38권6호
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• pp.457-463
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• 2023

밀키트 중 농산물의 잔류농약 안전성 조사를 위해 인천광역시 내 대형마트, 밀키트 전문점 및 온라인 스토어에서 밀키트 27개 제품을 수거하여 원재료 중 채소류 76품목, 버섯류 37품목을 대상으로 잔류농약 339 항목에 대해 분석하였다. 채소류 76품목 중 23품목에서 잔류농약이 검출되었으며, 버섯류 37품목은 검출되지 않았다. 잔류농약 검출률은 20.4%(23건/113건)를 보였으며 평균적으로 인천광역시 유통 농산물의 잔류농약 검출률이 8.0%인것과 비교해 보면 2배 이상 높게 검출된 것을 알 수 있었다. 조사결과 23건의 잔류농약이 검출된 시료에서 총 45 항목이 검출되었으며, 잔류농약 종류는 29 항목인 것으로 나타났다. 살충제 17 항목(37.8%), 살균제 16 항목(35.5%), 살응애제(살비제) 9 항목(20%), 식물생장조절제 3 항목(6.7%)이었다. 검출된 잔류농약 중 청경채에서 2건이 농약 잔류허용기준을 초과하였으며 초과된 농약은 famoxadone 0.034 mg/kg(기준: 0.01 mg/kg 이하, PLS), fenpyroximate 0.302 mg/kg(기준: 0.01 mg/kg 이하, PLS)이었다. 부적합률은 1.8%(2건/113건)이며, 평균적인 부적합률 1.2%와 비슷하게 나타났다. 이번 조사를 통해 밀키트 중 농산물에 다양한 종류의 농약이 잔류하는 것을 알 수 있었다. 이러한 결과를 토대로 밀키트 제품의 특성상 농산물에 대한 잔류농약 기준이 따로 설정되어 있지 않기 때문에 잔류농약에 대한 지속적인 모니터링이 필요하다고 판단된다.

• 한국산림과학회지
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• 제97권1호
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• pp.77-82
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• 2008

우리나라의 산림자원은 그 양적인 증대에도 불구하고, 임업의 낮은 채산성으로 인해 아직까지 경제적인 자산으로서의 가치를 충분히 인정받지 못하고 있으며, 임가경제통계나 국부통계 등 국가통계에서도 입목자산과 관련해서는 통계자료가 명확하게 제시되지 못하고 있는 실정이다. 따라서 본 연구는 우리나라 입목자산가치를 올바르게 평가하기 위한 방법 및 국가통계 산출 시스템을 구현하는데 최종적인 목적이 있으며, 이를 위하여 기존의 입목자산 관련 국내외 평가 사례 및 문헌 조사를 통해 다양한 평가방법들의 이론과 적용상의 현실적인 문제점들에 대해서 분석하였으며, 분석된 결과를 토대로 평가 대안들을 도출하고 그 타당성을 검토하였다. 본 연구 결과, 임가경제조사를 통한 우리나라 임가의 입목자산가치 평가를 위해서는 벌기령 미만의 산림은 내부투자수익율법으로, 벌기령 이상의 산림은 시장가역산법을 적용하여 평가하는 방법이 가장 합리적인 대안으로 제시되었다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.1764-1773
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• 2011

This study is about how to handle very soft grounds consisted of coal and household garbage(organic soil), clay, silt and so on, through examining Seoul-Busan High-Speed railway 6-2nd section. The soft soil might induce long term settlement and lead to structure's differential settlement eventually. So, we performed the boring test for characteristic of railway ground, laboratory test and field survey for mechanical property. And we also collected the engineering data of ground and the data for the establishment arrangement. These data were examined thoroughly considering residual settlement and strength by high-speed railway design standard. As a result of this study, we can say high-speed railway ground must have enough bearing capacity and be settled under allowable residual settlement(10cm). And also it needs to replace soft ground with high quality sand for the fundamental solution. With the application of replacement method on this study, we expect enough condition to construct stable high-speed railway.

• Asian Journal of Business Environment
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• 제10권1호
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• pp.29-36
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• 2020

Purpose: This study aims to analyze the effect of macroeconomic and non-macroeconomic determinants of capital flight. Research design, data and methodology: With five determinants, this survey was conducted by Eviews 10, and the ordinary least squares (OLS) as a statistical method was applied for examining the research hypothesis. The five determinants are a budget deficit, economic growth, inflation rate, the exchange rate, and sovereign rating. The capital flight measurement uses the World Bank residual approach. The data derive from the Central Bank of Indonesia, BPS-Statistics Indonesia, OECD, and Moody's Investor Service. Results: The result considers that economic growth, the exchange rate, and the sovereign rating will decrease capital flight. In addition, the budget deficit and the inflation rate will increase capital flight. The sovereign rating decreases capital flight bigger than the other determinants. In addition, the exchange rate is statistically significant. Conclusions: The most influential problem of capital flight in Indonesia is because of non-macroeconomics factor political issue, corruption, bad regulation, and others. That's why the investment climate in Indonesia is still not secure. We propose that the regime would have to amend the business rule for reducing capital, raising the investment climate, and demonstrating the creative industry.

• 한국환경농학회지
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• 제23권1호
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• pp.47-51
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• 2004

In order to know the residual pattern of pesticides and predict to the degradation period until below MRL we experimented procymidone and chlorothalonil for grape which were the most detected pesticide in grape by NAQS(National Agricultural product Quality management Service) survey. In this experiment we sprayed those pesticides 10 days before harvest and analyzed 0, 1, 2, 3, 5, 7, 10 day sample to establish logical equation and to calculate $DT_{50}$. Also the same day samples stored at $4^{\circ}C$ and $20^{\circ}C$, which were compared their degradation patterns. During the cultivating period, the residue amount of procymidone was changed from 1.85 mg/kg (0 day) to 0.33 mg/kg (10 day), $DT_{50}$ was 3.5 days, and chlorothalonil was changed from 5.5 mg/kg (0 day) to 3.49 mg/kg (10 day), $DT_{50}$ was 4.4 days. During the storage period, $DT_{50}$ of procymidone and chlorothalonil at $4^{\circ}C$ were 10.5 and 7.6 days, and 6.3 and 6.1 days at $20^{\circ}C$, respectively.

• 한국동물위생학회지
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• 제20권4호
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• pp.339-348
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• 1997

The purpose of the survey were determined the residual antibiotics and tetracyclines in beef(n=1,364), pork(n=2,817) and chickens(n=1,921) by the EEC 4-plate method, Charm IIand HPLC. The results were summarized as follows ; 1. The recovery rates in spiked samples were 98.8-107.2% for oxytetracycline(OTC), 33.2-48.6% for tetracycline(TC) and 64.1-72.3% for chlortetracycline(CTC) at 0.05-0.1ppm by HPLC using MSPD. 2. Residues of antibiotic were detected from 10 beef(0.75%) and 36 pork(1.31%) by EEC 4-plate method. In case of chickens were not detected. 3. Twenty-eight from 46 positive samples by the EEC 4-plate method were classified as TCs(60.9 %) by Charm II and TC of 12 samples were detected by HPLC. 4. Ten samples were detected levels of OTC ranging from 0.035 to 0.635 ppm and 3 samples were levels of CTC ranging from 0.066 to 0.150 ppm. OTC and CTC levels in 3 beef and 4 pork samples were exceeded the current tolerance level of 0.1 ppm.

• 한국환경과학회지
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• 제14권6호
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• pp.605-611
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• 2005

The aim of this study was to analyze the local distribution of the heavy metal concentration in Daegu and Ulsan which were divided into the residual areas, the traffic dense areas and the industrial areas. The Inductively Coupled Plasma(ICP) was used to analyze heavy metals, such as As, Cr, Hg, Zn, Cd, Pb, Cu and minor metals, such as Fe, Si, Mg, Ca, AI, Na, K. The results of this analysis showed that the content of heavy metals which was classified by districts in Daegu and Ulsan was the highest in the industrial areas followed by the traffic dense areas and the residual areas. Compared to the level of heavy metals of national and local soil survey network in 2003, contamination of heavy metals in Daegu was lower than national average. However, the content of Cd, As, Zn in Ulsan was respectively 13.38 times, 472 times and 2.65 times higher than national average contamination. In addition, compared to the soil pollution level of the environmental protection law, contamination of all areas in Daegu was lower. But the content of As at the industrial areas in Ulsan was 10.71 times higher than standard of soil pollution and 4.28 times higher than standard of measures against soil contamination.

• 한국동물위생학회지
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• 제25권3호
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• pp.285-294
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• 2002

The present studies were carried out to determine antibiotics residues in pork and beef muscles by EEC-4-plate and HPLC. A total of 2,534 samples of pork muscles and 1,070 samples of beef muscles from slaughter houses were collected in Gyeongnam area from January to December, 2001. The results were summarized as follows; 1. Recovery rates of TCs, Sulfa drug, Penicillin G from fortified pork and beef muscles ranged as 68.79～98.24%, 78.21～94.58% and penicillin G 63.35～67.24% respectively, by HPLC. 2. Antibiotics residues were detected in 36 sample(1.42%) of pork muscles, 29 sample (2.71%) of beef muscles by EEC-4-plate. 3. Detection rate of antibiotic residues 14 samples(0.55%) and 26 samples(2.43%), in pork and beef muscles, respectively by HPLC. Concentration of residues in 22 sample(2.06%) of beef muscle were higher than tolerance level in korea. 4. Antibiotics detected were sulfamethazine(47.37%), tetracycline(15.79%), oxytetracycline (15.79%), penicillin G(15.79%), sulfamerazine(5.26%) in pork muscle samples and oxyteracycline (37.21%), penicillin G(30.23%), sulfamethazine(20.93%), tetracycline(4.65%), sulfamerazine (2.33%), sulfadimethoxine(2.33%), sulfaquinoxine(2.33%) in beef muscle samples.

• 노동경제논집
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• 제42권3호
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• pp.1-38
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• 2019

본 연구는 한국의 직종 내 성별 잔차임금격차와 고소득 여성비중 간의 관계를 분석하였다. 직종 내 고소득 여성비중이 커질수록 이는 그 직종에서의 여성에 대한 편견 또는 통계적 차별을 줄여 성별 잔차임금격차를 감소시킬 수 있다. 따라서 본 연구는 "고용형태별 근로실태조사" 임금구조부문 원시자료(2009-2016년)를 직종-연도별 패널데이터로 구축하여 다양한 패널 분석을 통해 이를 실증분석하고자 하였다. 그 결과, 남성집중직종에서 직종 내 고소득 여성비중은 직종 내 성별 잔차임금격차에 유의미한 음(-)의 영향을 미치는 것으로 나타났다.

• Communications for Statistical Applications and Methods
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• 제26권3호
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• pp.261-272
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• 2019

In this paper, we propose a procedure to build a prediction interval of the sum of dependent binary random variables over a graph to account for the dependence among binary variables. Our main interest is to find a prediction interval of the weighted sum of dependent binary random variables indexed by a graph. This problem is motivated by the prediction problem of various elections including Korean National Assembly and US presidential election. Traditional and popular approaches to construct the prediction interval of the seats won by major parties are normal approximation by the CLT and Monte Carlo method by generating many independent Bernoulli random variables assuming that those binary random variables are independent and the success probabilities are known constants. However, in practice, the survey results (also the exit polls) on the election are random and hardly independent to each other. They are more often spatially correlated random variables. To take this into account, we suggest a spatial auto-regressive (AR) model for the surveyed success probabilities, and propose a residual based bootstrap procedure to construct the prediction interval of the sum of the binary outcomes. Finally, we apply the procedure to building the prediction intervals of the number of legislative seats won by each party from the exit poll data in the $19^{th}$ and $20^{th}$ Korea National Assembly elections.