• Korean Journal of Environment and Ecology
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• v.26 no.6
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• pp.911-922
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• 2012

This study aim that definite the relationship between coastal environment and different sand bar communities, as well as to analyze their spatial distribution of barrier island in the Nakdong river estuary. Survey method follow by Braun-Blanquet(1965) and there a total of 118 relev$\acute{e}$'s were undertaken. Definition of the relationships between species and environmental variables with Canonical Correlation Analysis(CCoA) and that to applied these relev$\acute{e}$'s with the RIM(Kim and Kim, 2006) program and that to classification used the SYN-TAX 2000 program(Podani 1979). On the basis of about 118 phytosociological releve's, the vegetation of xeric and hydric type was arranged in twelve plant communities: Xeric type-Pinus thunbergii community,Vitex rotundifolia community, Carex pumila community, Imperata cylindrica var. koenigii community, Miscanthus sacchariflorus community and Calystegia soldanella community, Hydric type-Salix dependens-Calamagrostis epigeios community, Calamagrostis epigeios-Phragmites communis community, Phragmites communis-Ischaemum aristatum community, Phragmites communis community, Scirpus planiculmis community and Suaeda glauca-S. japonica community.These plant communities represents sand dune vegetation and salt marsh vegetation. Widely distributing types in the actual vegetation map were sea club-rush community, reed community in salt marsh, and dry grassland. The edge in the coastal sand bars has zonation that almost distribution by the reed community in salt marsh. But outside of it were distributed sea club-rush community. Dry grassland type distributes higher zone of the center in coastal sand bars. Respectively, the coastal sand dune and salt marsh vegetation types were distributed ocean and inland on the frontier of it.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.50 no.spc1
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• pp.118-122
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• 2005

This study was carried out to obtain useful information and to select promising materials for the breeding of sprout-soybean by the analysis of seed characteristics and chemical composition of Korean local wild soybean lines. For this purpose, crude protein, crude oil contents and fatty acid composition of 70 lines analysed. The crude protein content of Korean wild soybean lines ranged from 35.6 to $47.9\%$, mean was $42.34\%$, and 13 lines showed high protein content over $45\%$. The crude oil content of those ranged from 2.8 to $18.0\%$, mean was $10.2\%$, and 2 low lines were below $2\%$. The fatty acid 16:0, 18:0, 18:1, 18:2, 18:3 ranged $11.1-44.6\%,\;3.0-11.4\%,\;11.1-30.6\%,\;12.4-59.5\%,\;and\;1.1-17.3\%$ respectively, and 2 extremely low fatty acid(18:3) lines were selected. Significant correlation between crude oil and fatty acids(16:0, 18:0, 18:2), and among every fatty acid compositions were recognized. Promising wild soybean lines were selected as genetic resources for sprout-soybean breeding and research genotypes; YWS 104 and YWS189 as the high protein, YWS 28 and YWS30 as the low-crude oil and low 18:3.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.536-545
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• 2016

Most universities have been concerned about Liberal Education; whether is it on universal truth, or on training job-specialists? In consequence, the curricula have been reformed and promoted diversely. In this aspect, has been developed as convergence education. I selected two easy and short texts and tried to make the students practice and memorize the dialogues as many as possible. At the end of the class, the students presented given assignments, with theatrical performance. This study carried out the research of students' presentation and theatrical performances on the basis of group study, together with a survey of the results of questionnaires and lecture evaluation. Therefore it was a exploratory study to check out significance of variables through the correlation analysis. The students' questionnaires showed the improvement of their English ability, together with their knowledge about literature and drama, cultivating humanities through the theatrical performance. It may be said that has achieved multi-functional effects of English class converged literature, theatre and humanities even for one semester.

• The Journal of the Korea Contents Association
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• v.13 no.2
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• pp.322-330
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• 2013

The purpose of this study was to examine the influence of critical thinking, clinical decision making and job satisfaction of 132 dental hygienists. The data was collected from 1st May to 31th October, 2012 in Ulsan, Pusan and Gyeongsangnam-do areas. The majority participants were female, 30.6 years old, graduate diploma course of dental hygienist, and working in dental clinics. In critical thinking, truth-seeking was highest score, 3.36 but maturity was lowest score, 3.00. In clinical decision making, canvassing of objectives & values was highest score 3.39, but search for alternatives or options was lowest score, 3.10. In job satisfaction, professional status was highest score 3.20, but incomes & promotion was lowest score 2.84. In correlation between general characteristics and critical thinking, there was significantly different in religion, education status, total working period and working areas. There was significantly different with religion and education status in clinical decision making, And There was significantly different with religion and education status, total working period, and working areas in job satisfaction. Critical thinking, clinical decision making and job satisfaction was positive relationship. To improve professional competence and job satisfaction of dental hygienist it need to use actively the critical thinking and clinical decision making. And it need to prepare the education and strategy to increase the job satisfaction of dental hygienist.

• Analytical Science and Technology
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• v.23 no.3
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• pp.304-311
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• 2010

Near Infrared Spectroscopy (NIRs) has been applied for rapid and nondestructive paper measurement by replacing the current destructive method to the property of paper. Current standard methods for the property of paper were pH, moisture, breaking length, and folding endurance, which data were compared with spectrum of FT-NIR spectrometer. Various paper products such as copy, envelope, white, newspaper, as well as old paper produced around 1960~1980 were used as the sample. The correlation ($R^2$) and standard error of prediction (SEP) results for breaking length, folding endurance, moisture and pH are $R^2$=0.914, SEP=0.508, $R^2$=0.926, SEP=0.281, $R^2$=0.941, SEP=0.931, pH $R^2$=0.949, SEP= -0.0631, respectively. This result show that NIRs can be applied to practical application for nondestructive analysis of paper records materials.

• Analytical Science and Technology
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• v.17 no.3
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• pp.263-270
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• 2004

A method is described for the analysis of short-chain alkylphenol ethoxylates (APEOs), 4-octylphenol-di-ethoxylate (OP2EO) and 4-nonylphenol-di-ethoxylate (NP2EO), in drinking water or wastewater using reversed phase high-performance liquid chromatography with electrospray ionization mass spectrometry. The solvent system was water and methanol containing $10{\mu}M$ trifluoroacetic acid as an ionization solvent. We acidified 1 L of water samples to less than pH 2 with concentrated $H_2SO_4$ and loaded onto Sep-Pak $C_{18}$, and eluted with acetone. The calibration of OP2EO and NP2EO was performed for the concentration range from 20 to 500 ng/L and the correlation coefficients were 0.999 and 0.990, respectively. The limits of detection were 20 ng/L (OP2EO) and 50 ng/L (NP2EO) at a signal-to-noise ratio of 3. Accuracy and precision of this analytical method were 85.8 ~ 122.1% and 8.2 ~ 18.8%, respectively. The proposed method allowed a sensitive and rapid detection of OP2EO and NP2EO and it could be applied for monitoring of APEOs from environmental samples.

• The Journal of Engineering Geology
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• v.9 no.3
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• pp.207-225
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• 1999

Twenty water samples (eleven groundwater and nine geothermal water samples) were collected to elucidate hydrogeochemical characteristics of the groundwater and geothermal water in the Dongrae hot-spring area and its vicinity. Major and minor elements were analyzed for ground and geothermal water samples. Physicochemical properties of the groundwater and the geothermal water were examined and chemical composition of the two waters were compared. Factor and correlation analyses were carried out to simplify the physicochemical data into grouping some factors and to find interaction between them. The groundwaters belong to $Ca-HCO_3$ type, while the geothermal waters belong to Na-Cl type. The Na and Cl concentrations in the Dongrae hot-spring area are higher than those of other granite areas in South Korea. The Na/Cl weight ratio ranges from 0.7 to 1.3 for the geothermal waters. On the phase stability diagram groundwaters fall effectively in the field of stability of kaolinite, while geothermal waters fall in the stability field of microcline or kolinite depending on the chemical composition system. Based on the Na-K, Na-K-Ca and Na-K-Ca-Mg geothermometers, the geothermal reservoir is estimated to have equilibrium temperature between 115 and $145^{\circ}C$.

• The Journal of Engineering Geology
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• v.17 no.3
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• pp.445-453
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• 2007

The purposes of this study lie on understanding characteristic water-rock interaction mechanisms of groundwater in the Geochang, Hapcheon, and Changryeong areas and establishing correlation between geological factors and groundwater chemistry by statistical tools. Based on the statistical results from the relationship between rock types and groundwater chemistry, fluorine is correlated with Fe and Al in the diorite area, whereas it is correlated with Cl and $NO_3-N$ in the andesite area. Hardness, total solids, and $SO_4$ show that they are closely related to each other in all rock types, especially with highest relationship in sedimentary rocks. Although it is generally acknowledged that TDS increases with depths of aquifer due to the long term water-rock interaction, no remarkable relationship between well depth and water chemistry is found in this study. It appears that hydrogeological system in the study area may be complex or the path of water-rock interaction is inconsistent with well depth.

• Child Health Nursing Research
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• v.19 no.2
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• pp.76-84
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• 2013

Purpose: The purpose of this study was to describe breastfeeding knowledge, attitude and nursing practice of neonatal intensive care unit (NICU) nurses. Methods: Survey methodology using a self administered questionnaire was employed as the research design. A total of 153 questionnaires from 7 university hospital NICUs in Seoul, Daejeon, and Daegu were used for data analysis. Results: The percentage of correct answers on the breastfeeding knowledge questions for the NICU nurses was 59.3%. The nurses in NICU reported a somewhat positive attitude to breastfeeding, mean per item $3.70{\pm}0.41$ on a scale of 5 points. Their breastfeeding nursing practice was at a moderate level, mean per item, $3.26{\pm}0.74$. Breastfeeding knowledge had significant correlations with breastfeeding attitude (r=.554, p<.001) and nursing practice (r=.203, p=.002). Also, There was a significant correlation between breastfeeding attitude and nursing practice (r=.243, p=.002). Conclusion: These results suggest that breastfeeding educational programs and strategies for NICU nurses should be developed to increase their breastfeeding knowledge, attitude, and nursing practice.

• Korean Journal of Environment and Ecology
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• v.23 no.1
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• pp.22-29
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• 2009

To investigate the vegetation structure of mountain valley from Cheonwangbong to Seonneotang, 23 plots($400m^2$) set up with random sampling method were surveyed. Two groups of Abies koreana community, Fraxinus mandshurica-Acer pseudo-sieboldianum community were classified by cluster analysis. Abies koreana was a major woody plant species in the valley area from Cheonwangbong to Mapogpo, and Pinus koraiensis, Acer pseudo-sieboldianum and Sorbus amurensis was partly occupied. High positive correlations was proved between Picea jezoensis and Sorb us amurensis, Taxus cuspidata, Fraxinus sieboldiana, Kalopanax pictus; Betula costata and Betula platyphylla var. japonica, Corn us controversa; Abies koreana and Pinus koraiensis; Stephanandra incisa and Betula ermani, Acer tegmentosum, Prunus sargentii; Acer pseudo-sieboldianum and Betula ermani; Fraxinus mandshurica and Deutzia prunifolia, Acer tschonoskii var. rubripes; Sorbus amurensis and Kalopanax pictus; Betula platyphylla var.japonica and Cornus controversa; Lindera erythrocarpa and Lespedeza maximowiczii, Quercus serrata, Styrax obassia; Lindera obtusi/oba and Abies holophylla; Carpinus laxiflora and Lespedeza maximowiczii; Fraxinus sieboldiana and Acer tschonoskii var. rubripes, Pinus koraiensis, Taxus cuspidata; Acer tschonoskii var. rubripes and Taxus cuspidata; Quercus mongolia and Rhododendron schlippenbachii; Quercus serrata and Styrax obassia, and relatively high negative correlations was proved between Abies koreana and Deutzia prunifolia; Lindera obtusi/oba and Pinus koraiensis. Species diversity(H') of investigated groups was ranged $2.7478{\sim}2.9573$.