게르마늄 종류별 양액재배시 갓의 생육특성 및 게르마늄 흡수

강세원,서동철,전원태,강석진,이성태,성환후,최익원,강위금,김현욱,허종수,조주식 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.3

To investigate the effect of inorganic (GeO2) and organic (Ge-132) germanium treatment on Brasica juncea C. plant, growth characteristics and Ge contents were examined with various inorganic or organic germanium treatments (0, 5, 10, 25, 50, 75 and 100 mg L^-1), respectively. Brasica juncea C. growth did not much inhibited until Ge 10 mg L^-1 concentration under both Ge-132 and GeO_2 treatments as compared to control. On the other hand, at Ge concentration higher than 25 mg L^-1 concentration, Brasica juncea C. growth was inhibited under both Ge-132 and GeO_2 treatments. Under treatment of GeO_2, length of root and shoot slightly increased until 5 mg L^-1 concentration and dry weight slightly increased until 10 mg L-1 concentration. Under treatment of Ge-132, length of root and shoot slightly increased until 10 mg L^-1 concentration and dry weight slightly increased until 25 mg L^-1 concentration. Total Ge contents in Brasica juncea C. early seedlings with GeO_2treatment were a bit higher than those with Ge-132 treatment. Germanium was primarily accumulated in the roots (77%) with organic Ge (Ge-132) treatments, whereas Ge was primarily accumulated in the leaf (70%,respectively) with GeO_2 treatments. The Ge uptake rates in inorganic Ge treatments were slightly high than those in organic Ge treatments. Under inorganic Ge treatment with 2.5 mg L^-1, about 3% of Ge was accumulated into plant and distribution in leaf and root was 84.8% and 15.2%, respectively. Under organic Ge treatment with 2.5 mg L^-1, about 2.6% of Ge was accumulated into plant and distribution in leaf and root was 66.4% and 33.6%, respectively.

로열티 프로그램 유형이 브랜드 충성도에 미치는 영향 : 제휴 로열티 프로그램 및 독립 로열티 프로그램

강세원,송재도 한국고객만족경영학회 2019 고객만족경영연구 Vol.21 No.1

In this study, the types of loyalty programs were divided into two types: the exclusive loyalty program and the allied loyalty program, and effectiveness was compared in terms of increasing loyalty. In the experiment, a survey-based experimental method was used, including scenarios from the loyalty program. As a result of the experiment, the Alliance loyalty program generated significantly higher loyalty than the sole loyalty programme. We also verified whether there was a significant difference in loyalty among those participating in the Affiliate Loyalty Programme after the provision of a loyalty programme between brands with relatively high brand loyalty before the provision of the loyalty programme. The analysis found that high and low brand loyalty before the loyalty programme was given did not significantly adjust the increase in brand loyalty caused by the provision of the program. The result that the affiliate loyalty program has a high performance in terms of loyalty compared to the exclusive loyalty program is meaningful in that it shows the effectiveness of the affiliate loyalty program. In addition, the fact that high and low brand loyalty before the programme was not significantly adjusted for increasing loyalty means that there is no significant difference in the allocation of performance among participating firms, at least in terms of loyalty. 본 연구에서는 로열티 프로그램의 유형을 단독 로열티 프로그램과 제휴 로열티 프로그램의 두 가지 유형으로 구분하고 충성도 증가 관점에서 효과성을 비교 연구하였다. 실험에서는 로열티 프로그램의 시나리오를 포함한 설문 기반 실험적 방식이 사용되었다. 실험결과 제휴 로열티 프로그램은 단독 로열티 프로그램 대비 유의하게 높은 충성도 증가를 발생시켰다. 또한 제휴 로열티 프로그램에 참여하는 기업들 중에 로열티 프로그램 제공 이전에 브랜드 충성도가 상대적으로 높았던 브랜드와 낮았던 브랜드 사이에 로열티 프로그램 제공 이후 충성도 증가에 유의한 차이가 발생하는지 여부를 검증하였다. 분석 결과 로열티 프로그램 제공 이전의 브랜드 충성도의 높고 낮음은 프로그램 제공에 의한 브랜드 충성도 증가에 유의한 조절효과를 나타내지 않았다. 제휴 로열티 프로그램이 단독 로열티 프로그램 대비 충성도 관점에서 높은 성과를 나타낸다는 결과는 제휴 로열티 프로그램의 효과성을 보여준다는 측면에서 의미가 있다. 또한 프로그램 제공 이전의 브랜드 충성도의 높고 낮음이 충성도 증가에 유의한 조절효과를 보이지 않았다는 점은 참여하는 기업들 사이에 적어도 충성도 관점에서 성과의 배분에서 유의한 차이가 나타나지 않음을 의미하는 것으로 참여기업들 사이의 조정(Coordination) 관점에서 유용한 시사점을 제공한다.

수강생 한 명뿐인 ‘세원학원’

강세원 샘터사 2023 월간 샘터 Vol.635 No.-

Effect of Sesame Straw Biochar Application on Soil Physics and Nitrous Oxide Emission in Upland Soil

강세원,조주식,김현태,서동철,문성동 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.3

The effect of biochar application on soil physics and nitrous oxide (N2O) emission from upland soil for broccoli cultivation was investigated. Sesame straw biochar (SB) was applied at amounts 0 (IF), 50 (SB50), 100 (SB100), 200 (SB200) kg 10a-1, respectively. SB addition to the upland soil decreased bulk density, and increased porosity and soil respiration. The N2O emission rates in all treatments were higher in the order of IF ≧ SB50 > SB100 ≧ SB200 treatments. Global warming potential in SB200 treatment decreased by 15.1% compared to IF treatment. Therefore, SB application in upland soil can improve soil physics and reduce N2O emission.

Social Responsibility and Intercultural Competency in Nursing Students

강세원,전은미 한국자료분석학회 2018 Journal of the Korean Data Analysis Society Vol.20 No.5

The purpose of this study was to investigate the relationship between social responsibility and intercultural competency in nursing students. The participants of this study were 228 nursing students of two universities. Data were collected from June to September, 2018. The data were processed through independent samples t-test, ANOVA, Pearson's correlation coefficient, and multiple regression analysis. The relevance between the two variables was found to be r=0.612 (p<0.001). The results of regression analysis showed that social responsibility explained 37.8% of the intercultural competency. Especially, the factors influencing the intercultural competency were found to be the social responsibility effectiveness, social responsibility practice, and social responsibility attitude. To develop the intercultural competency of nursing students, various program would need to be explored which can help increase their social responsibility.

Awareness of Metabolic Syndrome Risk Factor Values and Lifestyle Practices among Nursing Students

강세원,전은미 한국자료분석학회 2018 Journal of the Korean Data Analysis Society Vol.20 No.4

This is a descriptive study investigating the relationship between awareness of metabolic syndrome risk factor values and lifestyle practices in nursing students. The participants were 165 nursing students in the third and fourth grades at two universities in Korea from March to June 2017. Data were analyzed using SPSS 18.0 including mean, standard deviation, percentage, and independent samples t-test. A difference was found in physical activity and weight control (t=4.339, p<0.001) according to the participants’ awareness of blood pressure value. There were also differences in dietary habits (t=4.257, p<0.001) according to awareness of blood glucose value and in drinking and smoking habits (t=3.557, p=0.001) according to awareness of waist circumference. Therefore, there was a relationship between awareness of metabolic syndrome risk factor values and lifestyle practice. Awareness of risk factor values through metabolic syndrome screening and practice of healthy lifestyle are required to strengthen the foundation of cardiovascular health of nursing students.

Effect of Incorporation Levels of Green Manure Crops on Rice Yield and Soil Chemical Properties

강세원,서동철,조주식 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.3

This study was conducted to investigate rice yield and soil chemical properties affected by incorporation levelsof green barley (GB) and hairy vetch (HV). The GB and HV were applied to the pots at 500, 1,000, 1,500, and2,000 kg 10-1 (GB500, GB1000, GB1500, GB2000, HV500, HV1000, HV1500, and HV2000, respectively),and inorganic fertilizer (N-P-K = 9-4.5-5.7 kg 10a-1) treatment as control. After rice harvesting, chemicalproperties of soil such as pH, OM, T-N, and available P2O5 in GB and HV treated treatments were improvedover those in Control treatment. The rice yield ranged from 433 to 512 kg 10a-1 for GB treatments and 490 to532 kg 10a-1 for HV treatments, indicating that rice yield was affected by incorporation levels of GB and HV. The rice yields in GB2000, HV1000, HV1500 and HV2000 treatments increased by 3.3, 3.1, 6.4 and 7.4%compared with Control treatment, respectively. Therefore, minimum incorporation level of GB and HV forincreasing rice yield was 2,000 kg 10a-1 of GB and 1,000 kg 10a-1 of HV.

Selection of Optimal Application Condition of Corn Waste Biochar for Improvement of Corn Growth and Soil Fertility

강세원,김성헌,박종환,서동철,조주식 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.5

This study was conducted to select an optimal approach to corn waste biochar (BC) application, and toevaluate the effects of combined application of BC and inorganic fertilizer (IF) on corn growth and soilchemical properties in a pot experiment. Corn growth differed with BC application timing and BC applicationlevels. Based on the characteristics of corn growth in pot-based experiments, the selected optimal applicationconditions of BC were application of 500 kg 10a-1 at 20 days before sowing. Also, the chemical properties ofthe tested soil with BC after corn harvesting were significantly improved than those in the other treatments. Inparticular, soil pH and CEC regardless of application conditions were markedly increased by 0.04~0.19 unitsand 0.08~2.58 comlc kg-1 in BC treatments than without BC treatments. Additionally, combined application ofBC and IF had greater effects on corn growth than single application of BC. Therefore, the results suggestusing properly BC application conditions and a combination of BC and IF for effective corn cultivation in anupland field.

Highly transparent, robust and well-ordered silver nanowire-polymer composite nano-membrane for skin-attachable acoustic sensor

강세원,고현협 한국고분자학회 2017 한국고분자학회 학술대회 연구논문 초록집 Vol.42 No.2

College Life Adjustment, Grit, and Self-leadership among Nursing Students

강세원 한국자료분석학회 2017 Journal of the Korean Data Analysis Society Vol.19 No.4

The purpose of this study was to investigate the relationship among college life adjustment, grit, and self-leadership in nursing students. The participants were 252 nursing students from 3 universities. Data collection was conducted from May to June 2017. The collected data were analyzed using IBM SPSS Statistics 22.0. Data were analyzed using an independent sample t-test, a Pearson's correlation coefficient, and a logistic regression. There was a positive correlation between college life adjustment and grit (r=0.596, p<0.001), college life adjustment and self-leadership (r=0.535, p<0.001), and grit and self-leadership (r=0.488, p<0.001). Analysis of the differences in grit and self-leadership scores according to college life adjustment score groups, revealed that the group with high college adjustment score had higher grit (t=-9.725, p<0.001) and self-leadership scores (t=-8.942, p<0.001) as compared to the group with a low adjustment score. The logistic analysis showed the odds ratio for grit was 4.397 (p<0.001, CI: 2.581–7.492) and that for self-leadership was 6.400 (p<0.001, CI: 3.683–11.121). To facilitate effective college life adjustment in nursing students, it is necessary to develop programs to improve grit and self-leadership.