• 농업과학연구
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• 제43권2호
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• pp.258-274
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• 2016

Recently, as fluctuations in annual precipitations continue to grow, the frequency of floods and droughts is rapidly increasing. Especially, since many reservoirs are reported as having less capacity and aging faster than large dams, the damages due to floods and droughts are estimated to become more severe. With this background for the present study, field investigation of reservoirs in Chungnam, Chungbuk, and Chonbuk regions was carried out for disaster prevention and the safety management of agricultural reservoirs. Furthermore, embankment transformations were compared and analyzed after the raising of embankments. Based on design methods for remodeling agricultural reservoirs and the results of embankment raising and the problems which occurred on crest, supplementation to the upstream and downstream slopes, control sector, and spillway should be implemented in the existing reservoir. In regard to this, the condition assessment score of compound member of reservoirs was performed, the Chungnam region score was in the 3.11-4.73 range. In addition, reservoirs in Chungbuk scored in the 4.00-4.49 range, and reservoirs in Chonbuk scored in the 3.90-4.60 range. Applying current precision safety inspection practices to small reservoirs requires economic expenses and time, for which assessment items are too varied and complex. Therefore, subdivided condition assessment items and criteria should be improved and streamlined by deleting, reducing, combining, and selecting only the riskiest factors. In the future, reservoirs should be periodically monitored and systemically managed and rational plans for maintenance and repairs should be used as reinforcement methods.

• 대한정형도수물리치료학회지
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• 제5권1호
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• pp.39-51
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• 1999

Background and Purpose. Objective measurements of hamstring muscle length are needed to quantify baseline limitations and to document the effectiveness of therapeutic interventions. Several indirect clinical tests for measuring hamstring muscle length are available, but influence of their test procedure is not well documented. The purpose of this study were 1) to describe hamstring muscle length as reflected by use of six tests(active straight leg raising(ASLR), passive straight leg raising(PSLR), passive straight leg raising with the lower back flat(PSLRB), active knee extension(AKE), passive knee extension(PKE), hip joint angle(HJA). 2) to examine the correlation among the tests. Subjects, Sixty subjects(30 men. 30 women) ranging in age from 18 to 25 years(mean 20.2 years) and with no limitation hamstring flexibility and no neurological and orthopedical problems. Methods. All subjects performed six tests. A inclinometer was used to determine the end point of range of motion. HJA was measured using an inclinometer placed over the sacrum. PSLRB were tested PSLR with the low back flat and the opposite thigh slightly flexed and support on pillows. Results, A mean ASLR value of 85.9 degrees, PSLR value of 99.9 degrees, PSLRB value of 109.8 degrees, AKE value of 77.2 degrees PKE value of 83.1 degrees and HJA value of 73.0 degrees were obtained for all subjects. A dependent t-test showed significant difference between the angles of ASLR and PSLR(p<0.001). There was a significant difference between the angles of PSLR and PSLRB(p<0.001). There was a significant difference between the angles of AKE and PKE(p<0.001). The highest correlation was between PSLR and PSLRB(r=0.915, p<0.001). All SLR tests were significants related(p<0.001), as well as AKE and PKE(p<0.001). The lowest correlation was between PKE and HJA(r=0.171. p>0.05). Conclusion and Discussion. The results indicated that the hip flexion angles for ASLR, PSLR and PSLRB were a difference, and the knee extension angles for AKE and PKE were a difference.

• 물과 미래
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• 제5권2호
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• pp.6-16
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• 1972

It has been well studied and known that the yields from the rice fields irrigated by the cold water such as the water directly flowing in from mountain valleies, underground water and subground water are largely influenced by the water temperature. However, the best method of raising water temperature has not yet been established. This is because there are some essentially difficult problems associated. When we examine the effects of $1^{\circ}C$ rise in the water temperature under natural condition on rice growing, the necessity of this line of study is verified. The results of Mihara's study show that rice bears its fruits at the water temperature above $19^{\circ}C$ and the difference of $1^{\circ}C$ in the range of $19^{\circ}C$ to $22^{\circ}C$ can produce the 20% of difference in yields. Because of these facts, most farmers have made use of water temperature raising ponds, zigzag waterways and shelter belts. But the most important factor in raising water temperature has been found to be the heat loss due to evaporation. Recently, a good deal of experiment on raising water temperature and soil temperature by reducing the evaporation are being carried out all over the world. The reduction of evaporation does not only reduce heat loss, from the surface but also reduce the loss of water. Present study is aimed to determine the efficiency of different chemicals by which monomolecular films are formed over different surfaces such as water surface, soil surface and the surface of plant leaves with a purpose of preventing the transpiration, and aimed to observe the effects of the temperature rise and its influence on growing state as well as the durability of the plants under drought condition.

• 한국병원경영학회지
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• 제22권3호
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• pp.74-87
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• 2017

Purposes: The purpose is to establish the direction of healthcare R&D through private nonprofit organization. Methodology: The data is divided into two groups: 12 physicians and pharmacists, and 16 persons including professors related to university donation, non-profit foundation executives. Each group was subjected to two Delphi surveys. To analyze the validity of the opinion, the content validity ratio and the consensus of experts were verified. Findings: Funding should be invested in 'development research' and 'application research'. The factors that hinder the donation culture are 'donation prevention system such as tax imposition system and rebate double penalty system', 'insufficient motivation of fund raising person', and 'lack of fund specializing specialist'. The fund raising strategy should be centered on a small number of large donors or a balance between large and small donors. The fund raising target should be effective to raise funds for corporate and individual donors. It is necessary to clarify the purpose of the social problem to be solved by the campaign strategy for promoting donation, to announce the validity of the trust and transparency of the institution, and to emphasize the social investment by the private sector. Practical Implications: It is necessary to present directions through private nonprofit organizations for the future development of healthcare R&D. The legal and institutional deficiencies of the domestic nonprofit organization fundraising infrastructure should be improved. In order to create a social investment climate, it is necessary to improve the awareness of donations and develop various donation programs for the private sector.

• 한국환경과학회지
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• 제30권8호
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• pp.685-691
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• 2021

This study aimed to find a suitable size and a seedling raising stage for growing cuttings of Euonymus fortunei 'Emerald and Gold' using plug trays. The experimental method, involved cutting two nodes from a solitary branch of E. fortunei 'Emerald and Gold', and the use of 32 (143 mL/cell), 50 (70 mL/cell), 105 (18 mL/cell), 200 (13 mL/cell) plug trays. The cuttings were transplanted to trays after they were filled with a universal horticultural medium. To compare the growths, plant heights, the numbers of leaves, longest root lengths, thickness/radius ratios, dry weights, and fresh weights were measured from July to October, and statistical analyses were performed using both the two-way repeated-measures analysis of variance (ANOVA) and Tukey's post-test. The results confirmed that the size of the plug tray and the seedling raising stage had a significant effect on the growth of E. fortunei 'Emerald and Gold.' In addition, the overall growth was high and the change in growth was relatively rapid in districts 50 and 105. Therefore, it can be considered appropriate to use 50 and 105 trays when growing cuttings of E. fortunei 'Emerald and Gold' on plug trays.

• 한국과학교육학회지
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• 제27권3호
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• pp.263-271
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• 2007

이 연구의 목적은 고등학생들의 독창적인 문제발견 능력과 과학 학업 성취도, 과학 탐구능력, 창의적 성격 사이의 관계를 알아보는 것이다. 발견된 문제의 독창성을 평가하기 위해 빈도수에 의한 평가와 교사와 학생에 의한 주관적 판단에 의한 평가 방법을 사용하였다. 그 결과, 세 가지 평가 방법은 큰 차이가 없었으나, 빈도수에 의해 평가할 경우 친숙한 문제가 더 높은 점수를 받을 가능성이 있는 것으로 나타났다. 또한 전체 학생들의 독창적인 문제발견 능력은 학업 성취도 및 창의적 성격과 정적 상관이 있었으나, 과학 탐구능력괴는 상관이 없었다. 그러나 독창성 점수가 높은 상위 집단에서는 창의적 성격과 정적 상관이 있었으며, 하위 집단에서는 학업 성취도와 정적 상관이 있었다. 또한 독창성 점수가 높은 상위 집단과 하위 집단 간의 과학 탐구능력과 창의적 성격은 유의미한 차이가 없었으며, 학업 성취도는 물리I과 화학I 과목에서만 유의미한 차이가 있었다. 앞으로 문제발견 능력을 평가하기 위한 평가 방법에 관한 연구와 함께 독창적인 문제발견 능력에 영향을 미치는 다양한 변인에 대한 연구가 수행되어야 할 것이다.

• 산업진흥연구
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• 제9권2호
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• pp.175-183
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• 2024

본 연구는 장애아동을 양육하는 부모의 양육 스트레스가 양육 효능감을 경유하여 정신건강에 미치는 영향을 양육시간이 조절 매개하는지를 검증하여 장애아동 약육 부모의 양육 스트레스를 감소시킬 수 있는 기초자료를 제공하는데 연구의 목적이 있다. 조사대상은 장애아를 둔 부모였으며 총 315명이었다. 자료는 SPSS Win. Ver. 25와 SPSS PROCESS macro 4.2를 활용하여 분석하였다. 기술통계 분석, 신뢰도 분석, 상관분석 및 조절된 매개효과 분석이 적용되었다. 연구결과는 다음과 같다. 첫째, 장애아동을 양육하는 부모의 양육 스트레스는 양육 효능감과 정적 상관관계, 양육 스트레스와 정신건강은 부적인 상관관계, 양육 효능감과 정신건강은 부적인 상관관계를 보였다. 둘째, 양육시간은 양육 스트레스가 양육 효능감을 경유하여 정신건강에 미치는 영향을 조절 매개하였다. 결론적으로 장애아동을 양육하는 부모의 양육시간은 양육 스트레스가 양육 효능감을 거쳐 정신건강에 미치는 부정적인 영향을 상승시키는 역할을 함을 확인하였다.

• 대한가정학회지
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• 제44권11호
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• pp.91-106
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• 2006

This study aims to provide fundamental data for developing a parent education program for family leisure and analyzing the needs of the parents raising adolescent children on parent education for family leisure. The subjects were 287 parents raising second and third year students at middle schools. They were intentionally sampled from the middle schools at Seoul, Gyeonggi, Daejeon, Donghae, Samcheok and Changwon. This study results can be summarized as follows: First, the degree of aid expectation for parent education for family leisure was high. The degree of aid expectation by demographic variable showed significant differences, according to the educational background of father, religion of parents and job of parents. Second, among family leisure activity types, education needs for education- and experience-oriented activities were highest. The average education needs for family leisure activities, including each family leisure activity type, were 2.95/4, which was relatively high. Third, as for the needs of parent education methods for family leisure of the parents raising adolescent children, the needs for program contents were highest in attending lectures. Weekday mornings and children's non-vacation season were the highest program practicing times. In teaching methods, participating activities showed the highest needs; in session, one or two second sessions were the highest.

• 한국농공학회논문집
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• 제57권4호
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• pp.85-99
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• 2015

It is urgent to redevelop the superannuated reservoir levee through the levee raising for countermeasure to climate change and improvement of storage capacity of reservoir. However, low compaction degree of the raised reservoir levee owing to poor construction condition leads to degradation of the stability of the reservoir levee on seepage and earthquake. In this study, seepage and seismic behavior of raised reservoir levee with low compaction degree was evaluated through numerical simulation. From the simulated results, water level raising possibly induces crack and/or sinkhole on the surface of the poorly-compacted raised reservoir levee owing to the increase of the subsidences at the crown and the front side of that. In addition, relatively larger displacement and acceleration response at the front side of raised reservoir levee in seismic condition may degrade overall stability of reservoir levee. Therefore, reasonable construction management for the compaction of the raised reservoir levee is required for ensuring long-term stability on seepage and earthquake.

• Child Health Nursing Research
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• 제13권3호
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• pp.329-337
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• 2007

Purpose: This study was done to describe the essential structure of the lived experience of working women raising children. Method: Data were collected from 10 employed women with children who were under 2 years of age. The analysis of the data was done using the phenomenological analytic method suggested by Colaizzi (1978). Results: In this study, 6 essential themes were extracted: 'knowing by intuition child-rearing is difficult', 'having guilt-conscious of not being able to perform duties as a mother', 'hard work of maintaining two jobs', 'Lost self', 'realizing that one has become amother', 'thirsting for a social support system'. Conclusion: With a rapidly increasing number of working women, the significance of this study in the field of nursing is in understanding the child-rearing experience of working women. The findings indicate the need for a systemic and emotional support system for working women raising children.