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강정환,송창길,김현철,우성배,송진영,김태근,강진영,하영삼 한국유기농업학회 2008 韓國有機農業學會誌 Vol.16 No.1
This study was carried out to germination characteristics by temperature conditions and allelopathic effects of aqueous extracts on Amaranthus spinosus L. in order to investigate the competitive dominant in plant ecosystem and possibility application of natural herbicide. A. spinosus L. sprouted after 24 hour from seeding in 30~45℃ treatment. The germination ratio of A. spinosus L. was the highest estimated at 63.3(±2.9)% in 40℃ treatment, followed by 33.3(±2.9)% in 35℃, 1.7(±2.9)% in 30℃ and 5.0(±0.0)% in 45℃ treatment. It was generally decreased the Relative Germination Ratio(RGR), the Relative Elongation Ratio(RER), the Relative Fresh weight Ratio(RFR) of receptor plants by the aqueous extracts of concentration of A. spinosus L. but it was differently inhibited the kind of receptor plant species. And it was different effected among growing regions that aqueous extracts of concentration of A. spinosus L. inhibited more root than shoot. The total phenolic compounds content of A. spinosus L. was decreased gradually middle, first and last of growth stage, and gradually decreased to leaves, roots and stems. We think that A. spinosus L. appeared high germination ratio at a short period and showed allelopathic effects on other plants. Therefore A. spinosus. L. hold the competitive dominant of plant ecosystem in Jeju Island and possibility application of natural herbicide.
사법부 경호보안 담당 공무원의 감정노동이 직무태도에 미치는 영향
강정환,김현호 한국민간경비학회 2023 한국민간경비학회보 Vol.22 No.5
The purpose of the study is to investigate the effect of emotional labor of public officials in charge of security and security at the judiciary on job attitudes. A total of 336 final study subjects conducted a survey of 20 research variables using the self-evaluation entry method. Exploratory factor analysis, reliability analysis, frequency analysis, correlation analysis, independent t-test, one-way variance analysis, and multiple regression analysis were conducted as research analysis methods. Depending on the results of the study, conclusions can be presented as follows. First of all, it can be interpreted that the difference in superficial behavior depending on age, education, work experience, and salary is due to the difference in knowledge and information ownership about the job and the difference in response and response based on experience. However, it is analyzed that the perception of emotional labor of public officials in charge of security and security at the judiciary shows no structural difference in job attitude depending on the demographic group classification, and the problem of emotional labor is recognized as a common problem for all members. Changes and improvements in the work environment due to emotional labor do not need to be made according to a specific sociological classification, and welfare and benefits for workers who feel tired by emotional labor need to be strengthened in general. In addition, job satisfaction represents the emotional state of the affectionate response that occurs when evaluating the job, so it may have a high relationship with inner behavior. Accordingly, it is judged that the individual employee's mood or emotional control is directly related to job satisfaction. The implications of this study are that the duties of public officials in charge of security and security at the judiciary fall within the category of emotional labor, which can environmentally cause or function as a medium among stakeholders and various job groups. Therefore, efforts will be needed to improve the negative perception of emotional labor of public officials in charge of security and security at the judiciary.
김태근,송진영,강정환,강정환,양영환,김현철,송창길 한국유기농업학회 2016 韓國有機農業學會誌 Vol.24 No.1
This study was carried out to allelopathic effects of aqueous extracts on Coronopus didymus in order to investigate the competitive dominant in plant ecosystem and possibility application in natural herbicide. Number of species and species diversity for close to patch of C. didymus was decreased gradually site #1 (7, 1.76), site #2 (5, 1.34) and site #3 (5, 1.25). It was generally decreased the relative germination ratio (r=-0.731, p<0.01), the mean germination time, the relative elongation ratio (r=-571, p<0.01, r=-0.730, p<0.01), the relative fresh weight (r=-0.743, p<0.01), development of root hairs of receptor plants by concentration of the aqueous extracts from C. didymu. But they were different from the growing regions, the kind of receptor plants and the treatment of the aqueous extracts. Especially, it was differently effected among growing regions that inhibited more radicle than shoot by the aqueous extracts concentration of C. didymus. Total phenolic compound in the aqueous extracts of C. didymus analyzed about 23.0±1.1 mg/g. Total phenolic compounds of soil in survey area was increased gradually site #1 (0.072 ± 0.002 mg/g), site #2 (0.082 ± 0.003mg/g) and site #3 (0.092 ± 0.004 mg/g). We think that the aqueous extracts of C. didymu showed allelopathic effects on other plants. Therefore, C. didymu hold the competitive dominant of plant ecosystem in Jeju Island and possibility application of natural herbicide.
강정환,김현철,우성배,송진영,강진영,김태근,하영삼,송창길 한국유기농업학회 2008 韓國有機農業學會誌 Vol.16 No.1
This study was carried out to germination characteristics by temperature conditions and allelopathic effects of aqueous extracts on Amaranthus spinosus L. in order to investigate the competitive dominant in plant ecosystem and possibility application of natural herbicide. A. spinosus L. sprouted after 24 hour from seeding in 30~4 5℃ treatment. The germination ratio of A. spinosus L. was the highest estimated at 63.3(±2.9)% in 40℃ treatment, followed by 33.3(±2.9)% in 35℃, 1.7(±2.9)% in 30℃ and 5.0(±0.0)% in 45℃ treatment. It was generally decreased the Relative Germination Ratio(RGR), the Relative Elongation Ratio(RER), the Relative Fresh weight Ratio(RFR) of receptor plants by the aqueous extracts of concentration of A. spinosus L. but it was differently inhibited the kind of receptor plant species. And it was different effected among growing regions that aqueous extracts of concentration of A. spinosus L. inhibited more root than shoot. The total phenolic compounds content of A. spinosus L. was decreased gradually middle, first and last of growth stage, and gradually decreased to leaves, roots and stems. We think that A. spinosus L. appeared high germination ratio at a short period and showed allelopathic effects on other plants. Therefore A. spinosus. L. hold the competitive dominant of plant ecosystem in Jeju Island and possibility application of natural herbicide.