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Lee MH, Shin KI. Bias corrected imputation method for non-ignorable non-response. KJAS 2022. [DOI: 10.5351/kjas.2022.35.4.485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Min-Ha Lee
- Department of Statistics, Hankuk University of Foreign Studies
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies
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Oh J, Hwang HJ, Shin KI. A study on the generalized ratio-type estimator based on the multiple regression estimator. COMMUN STAT-THEOR M 2021. [DOI: 10.1080/03610926.2020.1740270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Jungtaek Oh
- Department of Statistics, Hankuk University of Foreign Studies, Yongin-si, Republic of Korea
| | - Hee-Jin Hwang
- Economic Statistics Department, The Bank of Korea, Seoul, Republic of Korea
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies, Yongin-si, Republic of Korea
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Son J, Lee YS, Lee SE, Shin KI, Cho K. Bioavailability and Toxicity of Copper, Manganese, and Nickel in Paronychiurus kimi (Collembola), and Biomarker Discovery for Their Exposure. Arch Environ Contam Toxicol 2017; 72:142-152. [PMID: 27858106 DOI: 10.1007/s00244-016-0328-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 11/03/2016] [Indexed: 06/06/2023]
Abstract
Bioavailability and toxicity of Cu, Mn, and Ni in Paronychiurus kimi were investigated after 28 days of exposure to OECD artificial soil spiked with these metals. Uptake and effect of Cu, Mn, and Ni on the reproduction of P. kimi were related to different metal fractions (water-soluble, 0.01 M CaCl2-extractable or porewater metal concentrations). Cu and Mn concentrations in P. kimi increased with increasing Cu and Mn concentrations in the soil, while Ni contents in P. kimi reached a plateau at a concentration higher than 200 mg/kg in soil. Both uptake and juvenile production related well to different metal fractions, suggesting that these metal fractions are suitable for assessing bioavailability and toxicity of metals in P. kimi. When toxicity for reproduction was compared, as reflected by EC50 values, the order of metal toxicity varied depending upon how exposure concentration was expressed. Moreover, the results of proteomic analysis showed that several proteins involved in the immune system, neuronal outgrowth, and metal ion binding were up-regulated in P. kimi following short-term (7 days) exposure to sublethal level (corresponding to 50% of the EC50) of Cu, Mn, or Ni, respectively. This suggests that the ecotoxicoproteomic approach seems to be a promising tool for early exposure warnings below which significant adverse effects are unlikely to occur. This study demonstrated that a combination of chemical and biological measures can provide information about metal bioavailability and toxicity to which P. kimi has been exposed.
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Affiliation(s)
- Jino Son
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 136-701, Korea
| | - Yun-Sik Lee
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 136-701, Korea
| | - Sung-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 702-701, Korea
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies, Yongin-Si, 17035, Korea
| | - Kijong Cho
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 136-701, Korea.
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Son J, Lee YS, Kim Y, Shin KI, Hyun S, Cho K. Joint toxic action of binary metal mixtures of copper, manganese and nickel to Paronychiurus kimi (Collembola). Ecotoxicol Environ Saf 2016; 132:164-169. [PMID: 27318557 DOI: 10.1016/j.ecoenv.2016.05.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/20/2016] [Accepted: 05/28/2016] [Indexed: 06/06/2023]
Abstract
The joint toxic effects of binary metal mixtures of copper (Cu), manganese (Mn) and nickel (Ni) on reproduction of Paronhchiurus kimi (Lee) was evaluated using a toxic unit (TU) approach by judging additivity across a range of effect levels (10-90%). For all metal mixtures, the joint toxic effects of metal mixtures on reproduction of P. kimi decreased in a TU-dependent manner. The joint toxic effects of metal mixtures also changed from less than additive to more than additive at an effect level lower than or equal to 50%, while a more than additive toxic effects were apparent at higher effect levels. These results indicate that the joint toxicity of metal mixtures is substantially different from that of individual metals based on additivity. Moreover, the close relationship of toxicity to effect level suggests that it is necessary to encompass a whole range of effect levels rather than a specific effect level when judging mixture toxicity. In conclusion, the less than additive toxicity at low effect levels suggests that the additivity assumption is sufficiently conservative to warrant predicting joint toxicity of metal mixtures, which may give an additional margin of safety when setting soil quality standards for ecological risk assessment.
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Affiliation(s)
- Jino Son
- Division of Environmental Science and Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea
| | - Yun-Sik Lee
- Division of Environmental Science and Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea
| | - Yongeun Kim
- Division of Environmental Science and Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies, Yongin-si 17035, Korea
| | - Seunghun Hyun
- Division of Environmental Science and Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea
| | - Kijong Cho
- Division of Environmental Science and Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
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Lee SE, Shin KI. The cut-off point based on underlying distribution and cost function. J Appl Stat 2016. [DOI: 10.1080/02664763.2015.1089222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Affiliation(s)
- Sang Eun Lee
- Department of Applied and Information Statistics, Kyonggi University, Korea
| | - Pu Reum Lee
- Department of Statistics, Hankuk University of Foreign Studies, Korea
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies, Korea
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Jeong SO, Lee SE, Shin KI. Relative Error Prediction via Penalized Regression. Korean Journal of Applied Statistics 2015. [DOI: 10.5351/kjas.2015.28.6.1103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Affiliation(s)
- Sang Eun Lee
- Department of Applied Statistics and Information, Kyonggi University, Kore
| | - Young Jin
- Sampling Division, Statistics Korea, Korea
| | - Key-Il Shin
- Department of Statistics, Hankuk University of Foreign Studies, Korea
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Kang JH, Shin KI. Re-Transformation of Power Transformation for ARMA(p, q) Model - Simulation Study. Korean Journal of Applied Statistics 2015. [DOI: 10.5351/kjas.2015.28.3.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jeong SO, Choo M, Shin KI. Shrinkage Small Area Estimation Using a Semiparametric Mixed Model. Korean Journal of Applied Statistics 2014. [DOI: 10.5351/kjas.2014.27.4.605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee SE, Cho MJ, Shin KI. A Study on the Optimal Cut-off Point in the Cut-off Sampling Method. Korean Journal of Applied Statistics 2014. [DOI: 10.5351/kjas.2014.27.3.501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sim HS, Shin KI. A Composite Estimator for Cut-off Sampling using Cost Function. Korean Journal of Applied Statistics 2014. [DOI: 10.5351/kjas.2014.27.1.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hwang JM, Shin KI. An Alternative Composite Estimator for the Take-Nothing Stratum of the Cut-Off Sampling. Communications for Statistical Applications and Methods 2012. [DOI: 10.5351/ckss.2012.19.1.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Park JJ, Shin KI, Lee JH, Lee SE, Lee WK, Cho K. Detecting and cleaning outliers for robust estimation of variogram models in insect count data. Ecol Res 2011. [DOI: 10.1007/s11284-011-0863-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Park JJ, Kim M, Lee JH, Shin KI, Lee SE, Kim JG, Cho K. Sublethal effects of fenpyroximate and pyridaben on two predatory mite species, Neoseiulus womersleyi and Phytoseiulus persimilis (Acari, Phytoseiidae). Exp Appl Acarol 2011; 54:243-259. [PMID: 21359626 DOI: 10.1007/s10493-011-9435-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 02/16/2011] [Indexed: 05/30/2023]
Abstract
Laboratory bioassays were conducted to evaluate the sublethal effects of fenpyroximate and pyridaben on life-table parameters of two predatory mites species, Neoseiulus (= Amblyseius) womersleyi and Phytoseiulus persimilis. In these assays, young adult females were treated with three sublethal concentrations of each acaricide. The life-table parameters were calculated at each acaricide concentration, and compared using bootstrap procedures. For each acaricide, the LC(50) estimates for both species were similar, yet the two species exhibited completely different susceptibility when the population growth rate was used as the endpoint. Exposure to both acaricides reduced the net reproduction rate (R (o)) in a concentration-dependent manner and their EC(50)s were equivalent to less than LC(7). Two different scales of population-level endpoints were estimated to compare the total effect between the species and treatments: the first endpoint values were based on the net reproductive rate (fecundity λ) and the second endpoint values incorporated the mean egg hatchability into the net reproductive rate (vitality λ). The fecundity λ decreased in a concentration-dependent manner for both acaricide treatments, but the vitality λ decreased abruptly after treatment of N. womersleyi with pyridaben. The change in the patterns of λ revealed that the acaricide effects at the population level strongly depended on the life-history characteristics of the predatory mite species and the chemical mode of action. When the total effects of the two acaricides on N. womersleyi and P. persimilis were considered, fenpyroximate was found to be the most compatible acaricide for the augmentative release of N. womersleyi after treatment.
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Affiliation(s)
- Jung-Joon Park
- Division of Environmental Science and Ecological Engineering, Korea University, 1-5 Ka, Anam-dong, Seoul, 136-701, Korea
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Park JJ, Lee JH, Shin KI, Lee SE, Cho K. Geostatistical analysis of the attractive distance of two different sizes of yellow sticky traps for greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae), in cherry tomato greenhouses. ACTA ACUST UNITED AC 2010. [DOI: 10.1111/j.1440-6055.2010.00796.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lee SE, Kang KH, Jeung SO, Shin KI. Comparison of Step-Wise and Exact Maximum Likelihood Estimations on Cell Probabilities of Contingency Table. Communications for Statistical Applications and Methods 2010. [DOI: 10.5351/ckss.2010.17.1.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim S, Shin KI. A Study on the Efficiency of the BLS Nonresponse Adjustment According to the Correlation and Sample Size. Korean Journal of Applied Statistics 2009. [DOI: 10.5351/kjas.2009.22.6.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee SE, Hwang HJ, Shin KI. Imputation Using Factor Score Regression. Communications for Statistical Applications and Methods 2009. [DOI: 10.5351/ckss.2009.16.2.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim JS, Hwang HJ, Shin KI. Comparison of Spatial Small Area Estimators Based on Neighborhood Information Systems. Korean Journal of Applied Statistics 2008. [DOI: 10.5351/kjas.2008.21.5.855] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jeong SO, Shin KI. A New Nonparametric Method for Prediction Based on Mean Squared Relative Errors. Communications for Statistical Applications and Methods 2008. [DOI: 10.5351/ckss.2008.15.2.255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kang KH, Shin KI. Comparison of Bootstrap Methods for LAD Estimator in AR(1) Model. Communications for Statistical Applications and Methods 2006. [DOI: 10.5351/ckss.2006.13.3.745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim JO, Shin KI. Comparison of Small Area Estimations by Sample Sizes. Communications for Statistical Applications and Methods 2006. [DOI: 10.5351/ckss.2006.13.3.669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Suh E, Koh SH, Lee JH, Shin KI, Cho K. Evaluation of resistance pattern to fenpyroximate and pyridaben in Tetranychus urticae collected from greenhouses and apple orchards using lethal concentration-slope relationship. Exp Appl Acarol 2006; 38:151-65. [PMID: 16596349 DOI: 10.1007/s10493-006-0009-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Accepted: 02/02/2006] [Indexed: 05/08/2023]
Abstract
This study aimed to monitor the present and future developments of the resistance of Tetranychus urticae Koch to fenpyroximate and pyridaben, using the relationship of the LC(50) and slope of the concentration-mortality line in a probit model, for the provision of reliable resistance management tactics. Tetranychus urticae populations were collected from 16 commercial greenhouses, where various crops were cultivated, as well as from 10 apple orchards throughout Korea. The resistance to fenpyroximate and pyridaben of each population was estimated by calculating the median lethal concentration (LC(50)), resistance ratio (RR) and slope of the concentration-mortality regression. Most of the greenhouse populations exhibited moderate levels of resistance, whereas the apple orchard populations showed only low levels, indicating that T. urticae populations in greenhouses were more strongly selected than those in apple orchards. Four population groups were established based on either the habitats (greenhouse and apple orchard) or acaricides (fenpyroximate and pyridaben). To test the hypothesis, "the slope is greatest at low and high levels of resistance," the slopes were regressed as a function of the LC(50), and fitted to a polynomial regression. The polynomial regression model explained this relationship well for the four population groups (p < 0.05), indicating that the development of resistance toward fenpyroximate or pyridaben was consistent with the gradient. A laboratory selection study agreed with the results from both acaricide field populations. These results suggest that the gradient was a good indicator of the susceptibility of T. urticae to genetic variations, which was related to the LC(50). The application of these findings is also discussed in relation to the resistance management of T. urticae.
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Affiliation(s)
- Eunho Suh
- Division of Environmental Science and Ecological Engineering, Korea University, Anamdong, Sungbuk-ku, 136-701, Seoul, Korea
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Son BI, Shin KI. A Cointegration Test Based on Weighted Symmetric Estimator. Communications for Statistical Applications and Methods 2005. [DOI: 10.5351/ckss.2005.12.3.797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jung RH, Lee SE, Shin KI. A Study on Weight Adjustment In Sampling Survey. Communications for Statistical Applications and Methods 2005. [DOI: 10.5351/ckss.2005.12.1.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shin KI. A Multivariate Unit Root Test Based on the Modified Weighted Symmetric Estimator for VAR(p). J Appl Stat 2004. [DOI: 10.1080/02664760410001681774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shin KI, Lee SE. Model- Data Based Small Area Estimation. Communications for Statistical Applications and Methods 2003. [DOI: 10.5351/ckss.2003.10.3.637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shin KI, Back KJ, Park JM. A Study on the Selection of Variogram Using Spatial Correlation. Communications for Statistical Applications and Methods 2003. [DOI: 10.5351/ckss.2003.10.3.835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shin KI. An Alternative Unit Root Test Statistic Based on Least Squares Estimator. Communications for Statistical Applications and Methods 2002. [DOI: 10.5351/ckss.2002.9.3.639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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