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경사도(傾斜度)가 토양침식(土壤侵蝕)에 미치는 영향과 승수구(承水溝)에 의(依)한 토양보전(土壤保全) 시험
한욱동 ( Han Wook Dong ),안연우 ( Yun Woo An ) 한국농공학회 1968 韓國農工學會誌 : 전원과 자원 Vol.10 No.1
According to the result of soil erosion rate de pends on the different slope of bare land, we have obtained data as follows, (measured; June, 1966- October, 1966. Precipitation: 1094.5mm soil text ure: sandy loam) The runoff was 552.1 ton in the 50 slope land 536.6 ton in the 10° slope land and 447. 8 ton in the 15° slope land per 10 a. i. e. the higher up degree of slope land goes, the less runoff becomes. On the contrary, the soil loss was 4. 8 ton in the 5° slope land, 16. 5 ton in the 10° slope land and 29. 7 ton in the 15° slope land per 10 a. i. e. the more higher up degree of slope land goes, the more soil loss becomes. According to the comparison test between the method of soil erosion Control by diversion drainage and of soil erosion control by grass strip which has occupied wide area as grass strip than that of diversion drainage in a condition of same cultivation area and guided it to farmers from 1959 to 1963 in Korea. As the runoff was 275 ton in the grass strip plot and 345 ton in the diversion drainage plot per 10 a. The former was less 71 ton than that of the latter. But the soil loss was 1.24 ton in the grass strip plot, 1.13 ton in the diversion drainage plot per 10 a. i. e. the former was more 0.11 ton per 10 a than that of the latter. Area of crop strip corresponds to 75% of the plot area carea of grass strip corresponds to 25% of the plot area) and to 95. 5% of the plot area in that of (Area of diversion drainage corresponds to 4. 5% of the plot area) strip. These indicated that the yield of diversion drainage plot was more increased to than that of grass strip plot by decreasing of practical crop’s planting area. Size and spacing of diversion drainage are different by soil texture and method of cultivation etc. Generally, it should be followed by next standard method. In case of contour farming, tardy slope and pl anting crop for soil conservation, the spacing must be limited to maximum 30-35 m. The spacing besides above mentioned circumst ance takes size below the 25 m in general, Spacing of diversion drainage(meter) Section area(㎤) of diversion of drainage x 5-Maximum mean precipitation per one year mea sured during 20 years.
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제세령(Se Ryoung Je),안연우(Yun Woo An),Takahiro A. Kato,최태영(Tae Young Choi) 대한생물치료정신의학회 2023 생물치료정신의학 Vol.29 No.3
Objectives: This research probes into the characteristics of modern type depression (MTD) in South Korea, drawing parallels to Japan’s hikikomori state. It aims to bridge cultural value gaps and highlight its significance in South Korea, given the observed reclusive youth behaviors. Methods: Participants undertook a semi-structured interview assessing hikikomori tendencies and MTD. Also, self-reports were done using the 25-item Hikikomori Questionnaire (HQ-25), 22-item Tarumi’s Modern-Type Depression Trait Scale: Avoidance of Social Roles, Complaint, and Low Self-Esteem (TACS-22), Patient Health Questionnaire-9 (PHQ-9), Beck Depression Inventory-II (BDI-II), Young’s Internet Addiction Test (YIAT), Smartphone Addiction Scale-Short form Version (SAS-SV), Revised UCLA Loneliness Scale (RULS), Lubben Social Network Scale (LSNS-6). Scores were analyzed by group (MTD, control) using and logistic regression was done. Additional analysis was done by group (modern type with hikikomori and modern type without hikikomori). Results: Of 59 participants, 29 had MTD. In both groups, age and sex were matched with differences in education years. The MTD group contained 14 hikikomori individuals. Logistic regression identified the HQ-25 as a significant predictor for MTD. Notably, specific components like “low self-esteem” in TACS-22 and “isolation” in the HQ-25 significantly influenced MTD status. HQ-25 and RULS were significantly different between modern type with hikikomori and modern type without hikikomori. Conclusions: Using Japanese diagnostic criteria, this study illuminated MTD in Korean patients. The findings underscore isolation and low self-esteem predicted diagnosis of MTD. As MTD shares common pathological traits with hikikomori, the therapeutic interventions are important in Korea.
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