• 제목/요약/키워드: field efficacy

검색결과 857건 처리시간 0.263초

Mannitol Amendment as a Carbon Source in a Bean-based Formulation Enhances Biocontrol Efficacy of a 2,4-diacetylphloroglucinol-producing Pseudomonas sp. NJ134 Against Tomato Fusarium Wilt

  • Kang, Beom-Ryong
    • The Plant Pathology Journal
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    • 제27권4호
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    • pp.390-395
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    • 2011
  • Fusarium wilt caused by Fusarium oxysporum has become a serious problem world-wide and relies heavily on chemical fungicides. We selected Pseudomonas sp. NJ134 to develop an effective biocontrol strategy. This strain shows strong antagonistic activity against F. oxysporum. Biochemical analyses of ethyl-acetate extracts of NJ134 culture filtrates showed that 2,4-diacetylphloroglucinol (DAPG) was the major compound inhibiting in vitro growth of F. oxysporum. DAPG production was greatly enhanced in the NJ134 strain by adding mannitol to the growth media, and in vitro antagonistic activity against F. oxysporum increased. Bioformulations developed from growth of NJ134 in sterile bean media with mannitol as the carbon source under plastic bags resulted in effective biocontrol efficacy against Fusarium wilt. The efficacy of the bioformulated product depended on the carbon source and dose. Mannitol amendment in the bean-based formulation showed strong effective biocontrol against tomato Fusarium wilt through increased DAPG levels and a higher cell density compared to that in a glucose-amended formulation. These results suggest that this bioformulated product could be a new effective biocontrol system to control Fusarium wilt in the field.

Hypotheses Analysis about the Efficacy of University-Industry Collaboration In the Field of Information Technology -The Case of IT Mentoring System- (정보통신분야 산학협력 효과성에 대한 영향요인 분석 -IT 멘토링 사례중심으로-)

  • Lee, Jung-Mann;Ihm, Seung-Ho;Hwang, Gyu-He;Lee, Jin-Suk
    • The Journal of the Korea Contents Association
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    • 제11권8호
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    • pp.342-352
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    • 2011
  • This study is to verify hypotheses about the efficacy and success factors of the IT Mentor project(in which 524 students participated) which is one of the most best practices in Korea. The empirical results found that all the aspects of students, industrial experts, professors, support programs and other infrastructure have certain influences on the industry-academia cooperation. In addition, logit regression model was employed to investigate the efficacy factors of industry and university's satisfaction to IT mentor system. It showed that industry's satisfaction depends on students' participation in company's projects and students' improvements of major competence.

The Influence of the Educational Environment of the College of Engineering on the Psychological Characteristics of Female Students (여성공학도의 전공 관련 심리적 특성에 미치는 공과대학 교육환경의 영향)

  • Kim, Dong Ik;Lee, Young Hwa
    • Journal of Engineering Education Research
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    • 제16권2호
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    • pp.69-77
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    • 2013
  • A study was conducted to find that which educational factors affect the psychological characteristics related to one's major of female students in engineering. The study was conducted through reviewing the advanced literatures and data for surveys was collected from the 216 female students at the college of engineering. This data was analyzed using descriptive statistics, the ANOVA test, hierarchical regression analysis, and factors analyzed by SPSS window's 12.0. The results are as follows. The major aspirations of female students at the college of engineering are affected by the grades (GPA) they have achieved in the past and by the professors' support they have received from the educational environment, by the WIE program participation. However, this survey showed that the support of professors was the most influential factor. The self-efficacy about employment is affected by the grades (GPA) they have achieved and the professors' support they have received. Therefore, the finding shows that the professors' support in their major field is the most affective factor to both characteristics such as the self-efficacy, the major aspirations.

Herbicidal efficacy of benzobicyclon-mixtures and carfentrazone-ethyl-mixtures in direct-seeding flooded rice (벼 담수직파 시 Benzobicyclon 혼합제와 Carfentrazone-ethyl 혼합제의 제초활성)

  • Park, Su Hyuk;Heo, Yu Ri;Won, Ok Jae;Hwang, Ki Seon;Eom, Min Yong;Han, Sung Min;Park, Kee Woong
    • Korean Journal of Agricultural Science
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    • 제40권3호
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    • pp.183-189
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    • 2013
  • This study was conducted to evaluate the efficacy of herbicide mixtures of benzobicyclon and carfentrazone-ethyl in direct-seeding flooded rice. The efficacy of benzobicyclon mixtures and carfentrazone-ethyl mixtures was greater than that of pyrazosolfuron-ethyl + pyriminobac-methyl GR. Herbicide mixtures with benzobicyclon controlled average 97% and herbicide mixtures with carfentrazone-ethyl controlled average 95% 60 days after application. When compared with untreated control, no visual injuries were detected at single and double dosage of herbicide mixtures. The yield of rice increased in both benzobicyclon and carfentrazone-ethyl treatments when compared with pyrazosolfuron-ethyl + pyriminobac-methyl GR. Based on these data, combinations of these herbicides can be applied to provide effective weed management in rice field.

Influential Factors of Social Entrepreneurial Intention in Bangladesh

  • AKHTER, Ayeasha;HOSSAIN, Md. Uzzal;ASHEQ, Ahmed Al
    • The Journal of Asian Finance, Economics and Business
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    • 제7권8호
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    • pp.645-651
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    • 2020
  • The concept of social entrepreneurship (SE) is gaining attention in developing economies for the purpose of greater societal welfare maximization. Still, findings in the field of SE studies have been riddled with conflicting results and counterstatement. Also, the determinants of developing SE are not robustly investigated in developing economies like Bangladesh. This context has mobilized the authors of this current study to focus on determining student's intention to pursue SE as their career choice. Hence, the study aims to examine the predictive determinants of social entrepreneurial intentions (SEI) among Bangladeshi students. The study has investigated the influence of entrepreneurial self-efficacy, social support, prior experience, and educational support on SEI. The survey was conducted from a public university of Bangladesh, and 231 students participated in the study. Questionnaire items under each construct variable have been adopted from pre-tested research studies. Five-point Likert scale questionnaire was applied to measure the variables. SPSS version 23.0 has been used for statistical analysis through which correlation and multiple regression analysis were conducted to measure the impact of the independent variables on SEI. Results exhibited that self-efficacy, social support, and educational support positively and significantly predicted SEI, while prior experience does not influence SEI.

Weed control as affected by herbicide in winter cereal crops (맥류재배에서 제초제에 따른 잡초방제 효과)

  • Won, Ok Jae;Park, Kee Woong;Park, Su Hyuk;Eom, Min Yong;Kang, Kwang Sik
    • Korean Journal of Agricultural Science
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    • 제42권2호
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    • pp.93-98
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    • 2015
  • This study was conducted to evaluate the efficacy of herbicide in winter cereal crops, barley and wheat. The efficacy of soil-applied herbicides, linuron EC and pendimethalin, thiobencarb GR was greater than that of butachlor EC. Linuron EC controlled average 95% and pendimethalin, thiobencarb GR controlled average 97% within 150 days after soil-applied treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of linuron EC and pendimethalin, thiobencarb GR. The yield of barley increased in linuron EC and wheat increased in pendimethalin, thiobencarb GR treatments when compared with butachlor EC. The efficacy of foliage treatment, bentazone+propanil ME was greater than that of bentazone SL. Bentazone+propanil ME controlled average 96% in barley and 97% in wheat, within 30 days after foliage treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of bentazone+propanil ME. The yield of barley and wheat increased in bentazone+propanil ME treatments when compared with bentazone SL. Based on these data, combinations of these herbicides could be applied to provide effective weed management in barley and wheat field.

The Influence of Senior's Technical Stress and Self­-Efficacy on Entrepreneurial Intentions : Including Mediating Effects of the Resilience (시니어의 기술 스트레스와 자기효능감이 창업의지에 미치는 영향 : 회복탄력성의 매개효과를 포함하여)

  • Chang, Soo-jin
    • Journal of Venture Innovation
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    • 제2권1호
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    • pp.93-118
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    • 2019
  • This study empirical analysed how senior's technical stress and self-efficacy affected entrepreneurial intentions and whether resilience functioned as a mediating effects between them. 207 data were collected from the field survey questionnaires administered to a convenience sample of senior men and women aged 40 and over who had entrepreneurial intentions. For hypothesis testing, the IBM SPSS Statistics 24.0 was used. Frequency analysis, exploratory factor analysis, correlation analysis, and hierarchical regression analysis were conducted. Empirical studies showed as follows. First, technical stress affected senior's entrepreneurial intentions. Second, self-efficacy turned out to affect senior's entrepreneurial intentions. Third, resilience came out to have a partial-mediating effects between technical stress and the senior's entrepreneurial intentions as well as between self-efficacy and the senior's entrepreneurial intentions. These research outcomes supported the preceding studies that self-efficacy played key roles in maximizing senior's entrepreneurial intentions and demonstrated the importance of self-efficacy as an independent variable for seniors to promote entrepreneurial activities with an intention of starting a new business. Furthermore, the technical stress newly introduced as an independent variable was found to be the next most important factor after the self-efficacy. The study also confirmed that the resilience has been doing an partial-mediating effects. However, it appeared that the technical stress affected the will of start-up, but it appeared to be a positive relationship. For generalization of this finding, further studies are required.

Clinical Nursing Instructors' Teaching Efficacy and Nursing Students' Clinical Practice Satisfaction (임상실습지도자의 교수효능감과 간호대학생의 임상실습 만족도)

  • Park, Inhee;Seo, Eunju
    • Journal of Industrial Convergence
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    • 제19권1호
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    • pp.99-108
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    • 2021
  • To determine clinical nursing instructors' teaching efficacy, students' clinical practice satisfaction, and confirm between correlation, and develop a plan for operating nursing education efficiently for clinical practice. Clinical practice could create an optimal learning situation. We applied CNITEs and CPS to measure clinical nursing instructor teaching efficacy and clinical practice satisfaction. The differences in teaching efficacy by the general characteristics were measured and analyzed; the higher the level of the participants' education, position, clinical career, and clinical teaching career, the higher their teaching efficacy. The higher the age at clinical practice, the higher the clinical efficacy of clinical practitioners with clinical career and higher education level students were more satisfied with the practice subject and nursing instruction than other categories. Therefore, in order to increase the satisfaction of nursing students' practice in the clinical field, we hope to improve various things that can be used not only teaching efficacy but also in clinical practice satisfaction.

The Effect of Organizational Efficacy, Self-efficacy, Nursing Professionalism on Organizational Commitment in General (종합병원간호사의 조직효능감, 자기효능감, 간호전문직이 조직몰입에 미치는 영향)

  • Kim Hyun Woo;Eun Hee Park
    • Journal of Industrial Convergence
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    • 제21권7호
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    • pp.75-82
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    • 2023
  • The purpose of this study was designed to help the operation of the hospital organization through analysis of factors influencing organizational commitment of general hospital nurses. 129 nurses in general hospitals were targeted in G City. This study was conducted to analyze the effects of group efficacy, self-efficacy, and nursing professionals on organizational commitment. T-test, ANOVA, Pearson's correlation coefficient, Descriptive statistics and multiple regression were used. Stepwise regression analysis found that organizational commitment was affected by group efficacy(β=0.240, p =.003), nursing professionalism(β=0.229, p =.004) and daytime work(β=0.249, p =.003), The F statistic was 10.478 (p <.001). Therefore, in order to improve organizational commitment, it will be necessary to prepare communication programs and cooperation programs per unit to improve collective efficacy. In addition, it is necessary to improve the system, such as a system dedicated to night workers, so that the working hours of nurses in general hospitals can be maintained constant. In addition, it is necessary to develop a support program so that nursing professionals do not decrease due to disappointment in reality in the nursing field.

A Study on the development of the safety work manual of a small construction site that takes advantage of the risk assessment methods (위험성평가 기법을 활용한 소규모 건설현장 안전작업메뉴얼 개발에 관한 고찰)

  • Park, Jun Ho;Park, Hai Chun;Lee, Kyoung Hun
    • Proceedings of the Safety Management and Science Conference
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    • 대한안전경영과학회 2013년 춘계학술대회
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    • pp.301-310
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    • 2013
  • This study compared the disasters in construction field under construction amount of 300,000,000 won and the whole construction fields in order to improve the efficacy of various industrial safety and health policies and services and examined the characteristics of disasters in construction field under 300,000,000 won. It also examined, compared and analyzed the characteristics of disaster in construction field under construction amount of 300,000,000 won that disaster prevention technical experts saw. The subjects of comparison were selected with statistical data of disaster for 2011 and those of disaster in construction field under construction amount of 300,000,000 won from January to August of 2012. And questionnaire was conducted with technical instruction experts of small-sized construction field and priority was drawn, compared and analyzed with AHP. Consequently, the results of different views between actual disaster data and experts' views were obtained. Therefore, this study suggested the characteristics of disaster in construction field under construction amount of 300,000,000 won and presented the methods for improving disaster prevention technical experts.

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