• Asian Journal of Turfgrass Science
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• v.15 no.1
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• pp.1-8
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• 2001

Antifungal activity of 20 chemicals registered to turfgrass diseases was evaluated. Among the chemicals, iprodione, benomyl, iprodione+thiram, pencycuron+tebuconazole, hexaconazole, and iprodione+thiophanate-methyl exhibited high antifungal activity to the dollar spot fungus. All isolates were greatly inhibited by the chemicals at the concentration over 32ppm($\mu\textrm{g}$/ml). However, sensitivity of the isolates to chemicals was varied at the lower concentration as 8 and 16 ppm as follows. The isolate originated from Ora golf course was resistant to iprodione and iprodione+thiophanate methyl, Gonjiam isolate to iprodion, Youngpyung isolate to iprodione+thiram, and Dogo isolate to iprodione+thiram, pencycuron+tebuconazole, and tebuconazole. It was found from this study that the varied chemical resistance among the isolates was positively related to the application time of the chemical in the golf course. Consequently, when a chemical was applied more often times than the others to the golf course, the fungal isolates originate from the field showed higher resistance to the former chemical. Effects of the chemicals on control of the dollar spot was evaluated in the field. All tested chemicals revealed over 70% disease control efficacy, however, mepronil+propiconazole was the best showing 83% control efficacy and followed by fenarimo, iprodione, terbuconazole, thiram, and thiophanate-methyl.

• Korean Journal of Veterinary Research
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• v.48 no.1
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• pp.53-60
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• 2008

We have investigated efficiency of a recombinant subunit Pasteurella multocida toxin (PMT) that was mixed with a vaccine consisted of inactivated whole cells of Bordetella bronchiseptica, P. multocida (types A and D). For verification of the efficacy of the vaccine, all experimental pigs (suckling piglets, sow and gilts) in the three farms were vaccinated. Antibody titers against B. bronchiseptica and P. multocida type A of the vaccinated pigs by microplate agglutination were significantly higher than those of the control pigs (p < 0.05). Similar patterns were observed in the analysis of anti- PMT neutralizing antibody by serum neutralizing method using Vero cell (p < 0.05). Anti- P. multocida type D antibody titer of the vaccinated sows and gilts by ELISA showed significant differences with those of the non-vaccinated pigs (p < 0.05). Although antibody titers increased, it was unable to find out the difference in the clinical signs between the vaccinated and non-vaccinated pigs. However, the increase in body weight of the vaccinated piglets was observed in comparison with the non-vaccinated piglets on a farm. At slaughtering of the pigs, pathological lesions in the turbinate bones of the vaccinated pigs were significantly lower than those of the non-vaccinated pigs (p < 0.001). These results suggested that efficacy of the vaccine in pigs demonstrated to protect against atrophic rhinitis in Korea.

• Research in Community and Public Health Nursing
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• v.14 no.4
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• pp.699-706
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• 2003

The objective of this study is to find out the difference in perceptional fatigue and health promoting behavior between hospital nurses and public health nurses. The subjects of this study were 141 hospital nurses and 73 public health nurses in Daejeon. Data were collected using a self-reporting questionnaire during the period from the 5th to 16th of March 2003. Collected data were analyzed using SPSS program. Real number, percentage, mean and standard deviation were calculated, and $x^2$-test and t-test, ANOVA, Pearson's correlation coefficient, stepwise multiple regression procedures were carried out. The findings of this study as follows: 1. The mean score of health promoting behavior was 2.71. 2. There were statistically significant differences in health promoting behavior according to age, marital status, family status, residency, educational level, income, the length of work experience and the field of work. (p<0.05) 3. There were statistically significant differences in fatigue according to age, marital status, family status, educational level, income, the length of work experience, perceived health status and the field of work. (p<0.05) 4. The fatigue was found to be in significant negative correlations with health promoting (r=-0.358, p<0.000) and self efficacy (r=-0.314, p<0.000). On the contrary, a significant positive correlation was found between fatigue and perceived barriers (r=0.210, p<00.01). 5. There were five predictors affecting health promoting behavior, which were self-efficacy, income, perceived benefit, fatigue and family support. The most influential factor was self-efficacy that made 31% of prediction, followed by income (6%), perceived benefit (5.2%), fatigue (2.2%) and family support (1.7%) in their order. As a whole, these factors made 46.1% of prediction of health promotion behavior.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.52 no.2
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• pp.183-197
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• 2007

Field trial was conducted at the Research Farm of the Katsina State Agricultural and Rural Development Authority during the farming season of 2004 with a view to evaluate/determine the efficacy of some selected plant-derived biopesticides against the insect pests of cowpea as well as their effect on yield. The variety of the cowpea used was IT86D-719 and the plant derived biopesticides evaluated during the trial were chilli pepper, garlic, ginger, neem, sweetsop and tobacco. The experimental field was ploughed, harrowed and thereafter ridged before the commencement of the 2004 planting season. A total of twenty one (21) experimental plots were demarcated and arranged into seven treatment plots. The size of each plot was $5m{\times}4m$ while interspaces between adjacent plot and blocks were 1m and 2m, respectively. Results of the experiments showed that all the plant-derived biopesticide treatments were significantly (p>0.05) better than control treatment. The order of effectiveness of the treatments was tobacco (80-90%), sweetsop (75-85%), garlic (70-80), neem (72-78%), chilli pepper (60-70%) and ginger (30-50%). Furthermore, yield result corresponded positively with the effectiveness of the treatments. Results of the present finding suggest the use of tobacco, sweetsop and garlic as promising biopesticides in the control of cowpea insect pests.

• The Korean Journal of Pesticide Science
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• v.11 no.1
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• pp.46-51
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• 2007

In this study, two commercial mating disruptors were compared in terms of disruption of Oriental fruit moth, Grapholita molesta, male orientation, in which a new dispenser type, $SPLAT^{(R)}$, was compared with a current dispenser type, $Isomate^{(R)}$-M ROSSO. For this assessment, the last three year field monitoring data were analyzed for the efficacy of Isomate type dispenser. Then two commercial dispensers were compared in different localities with sub-locality replications during identical monitoring period from mid February to late August. There appeared to be four adult population peaks, in which the overwintering population size was positively correlated with the following reproductive population sizes. Isomate type dispenser effectively suppressed G. molesta populations during all growing seasons with some annual variation in its efficacy. Between two dispensers, SPLAT type was much effective. The difference in their efficacy may be caused by the difference in composition of major pheromone component.

• The Plant Pathology Journal
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• v.19 no.2
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• pp.92-96
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• 2003

The study was conducted to determine the cultural conditions and the effect of inert fillers for melanization and sporulation abilities of sodium alginate pellets, and the weeding efficacy of the formula in the field. Melanin production of E. nematosporus was affected by striking frequency. Percentage of melanized beads was increased to 80.6% at higher rpm up to 180. The melanized pellets produced more conidia with abundant mucilage than unmelanized pellets. Shaker culture of Epicoccosorus nematosporus with sodium alginate yielded a total of 55 mg per 100 pellets. Percentage of melanized pellets was highest with 81.0% and 83.3% of melanization, when wheat bran and rice polish were amended and produced the conidia with 65.4 and 68.4 mg per 100 pellets, respectively. When 1 L of conidial suspension of 6.0$\times$$10^5$ conidia per ml was applied on 30-day-old plants in a plot, 74.5% of the plants were killed within 20 days, whereas, its melanized sodium alginate pellets killed 57.8% of the plants in the same period. The number of tuber formation of Eleocharis kuroguwai in the untreated control plots was 128.5 per plot, but those of the plots treated with conidial suspension and melanized pellets were 22.1 and 39.7, respectively, at the end of the season. Results of this study showed that melanization of mycelia-mixed sodium alginate are an important sporulation factor in E. namatosporus as a mycoherbicide.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.341-350
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• 2019

The aim of this study was to establish research hypotheses and conduct empirical analysis to clarify the relationship between self-leadership, self-efficacy, job satisfaction, and job performance of researchers in the energy and environment fields. Data were extracted from questionnaires returned by 165 researchers in the field of energy environment among 200 questionnaires collected for approximately three weeks. The reliability, frequency, descriptive statistics, correlation analysis, multiple regression analysis, and sobel-test were examined using the SPSS 22.0 statistical program. The self-leadership of the researcher has a positive (+) effect on self-efficacy, job satisfaction, and job performance, and the researcher's self-efficacy has a positive (+) influence on both job satisfaction and job performance. In addition, the self-efficacy and job satisfaction mediated the relationship between self-leadership, and job performance. Therefore, to improve the job performance of the researchers, it is important to establish a system for the human resource management of the affiliated institutions and revitalize the education for the self-leadership and self-efficacy improvement. In addition, it is necessary to provide an appropriate compensation system to satisfy the researchers' enjoyment, satisfaction and trust in their jobs. In particular, because self-efficacy is a very important factor for job performance, it is important to prepare an institutional strategy for strengthening the self-efficacy of researchers.

• Journal of Science Education
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• v.47 no.1
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• pp.63-74
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• 2023

This study aims to investigate the effects of pre-service elementary teachers' scientific self-efficacy by science motivation according to the academic track in high school. The subjects of this study were 525 pre-service elementary teachers of which 350 pre-service elementary teachers were selected from the humanities and social sciences track in high school and 175 pre-service elementary teachers were selected from the science-engineering track in high school. In order to investigate the difference between scientific self-efficacy and science motivation among pre-service elementary teachers, Independent sample t-test and Cohen's d were done. In order to find out about the Influencing of scientific self-efficacy on science motivation, multiple regression analysis was used. The results of this study were as follows: First, there were statistically significant differences in scientific self-efficacy and science motivation, and the average of pre-service elementary teachers who selected science-engineering were significantly higher. Second, explanation power of scientific self-efficacy on science motivation appeared as 66.7~68.3%. The explanatory power of pre-service elementary teachers' who selected humanities and social sciences were higher. The relative importance was high in task difficulty preference factor to humanities and social sciences, was high in self-regulation efficacy to science-engineering. In conclusion, in order for pre-service elementary teachers to achieve high achievement and motivation in science subjects, and to teach science well to students in the school field, teacher education that can improve scientific self-efficacy should be conducted.

• The Korean Journal of Emergency Medical Services
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• v.22 no.2
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• pp.103-117
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• 2018

Purpose: This study was performed to investigate the level of ethical values and its related factors among some paramedic students. Methods: The subjects of this study were 480 paramedic students from five universities located in G-metropolitan city and J province. Data were collected using a self-administered questionnaire and analyzed using t-test, ANOVA, Pearson's correlations, and multiple regression analysis. Results: The mean scores of level of ethical values, academic self-efficacy and self-esteem were $3.70{\pm}0.45$, $3.15{\pm}0.42$ and $3.60{\pm}0.70$, respectively. In the correlation analysis, ethical value level was significantly positively correlated with self-esteem (r=.195, p< .001) and academic self-efficacy (r=.156, p= .001), of domains in academic self-efficacy, self-regulation efficacy (r=.230, p< .001) and confidence (r=.105, p= .022). In multiple regression analysis, self-esteem (${\beta}=.163$, p= .026), task ease preferences (${\beta}=-.350$, p< .001) and confidence (${\beta}=.403$, p< .001) were significantly related to ethical value levels. In addition, subjects willing to participate in the bioethics education showed higher relevance to ethical values than indifferent subjects (${\beta}=2.751$, p= .003). Conclusion: Concrete and systematic education will be needed in order to foster the establishment of ethical values of the paramedic students. Additionally, to fulfill their roles and obligations as emergency medical technicians, in the field, various educational curricula based on simulated cases in the university should be introduced.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.462-473
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• 2019

This study examined the evidence on how self-leadership and career decision-making self-efficacy scale can produce a mediating effect on the relation between critical thinking disposition and career preparation behavior of nursing students. The subjects were college students majoring in nursing in Gwangju. The data collected was for 263 such students. It was analyzed with SPSS 23.0 for windows. To examine the mediating effect, the study used Sobel. The findings were as follows. First, critical thinking disposition positively influences career preparation behavior of nursing students. Secondly, self-leadership and career decision-making self-efficacy show a complete mediating effect on the relation between critical thinking disposition and career preparation behavior in nursing students. These findings suggest that in order to promote career preparation behavior of nursing students, educational programs should improve subjects on critical thinking disposition. It also suggests self-leadership and career decision self-efficacy should be provided in nursing education field.