• 한국정보전자통신기술학회논문지
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• 제8권4호
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• pp.299-309
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• 2015

본 연구의 목적은 유아교육기관 만족도에 따른 부모의 자아존중감과 양육스트레스에 미치는 영향을 분석하고자 한다. 연구대상은 경상남도 OO시의 유아교육기관 학부모 700명을 대상으로 2014년 9월 20일부터 10월 10일 까지 설문조사를 실시하였다. 분석방법은 AMOS 18.0 프로그램을 사용하여 빈도분석, 요인분석, 다중회귀분석을 실시하여 유의수준 5%에서 검증하였다. 연구결과는 첫째, 부모의 유아교육기관에 대한 만족도가 부모의 양육스트레스에 직접적인 영향을 미치지 않았다. 둘째, 유아교육기관 만족도는 부모의 양육스트레스에는 직접적인 영향을 미치지는 않으나, 자아존중감은 양육스트레스에 영향이 있는 것으로 나타났다. 부모의 자아존중감이 높고, 유아교육기관에 대한 만족도가 높으면 양육스트레스는 낮게 나타났다. 본 연구의 시사점은 부모의 자아존중감과 양육스트레스 개선에 기초자료가 될 것으로 사료 된다.

• 한국콘텐츠학회논문지
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• 제13권3호
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• pp.174-183
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• 2013

본 연구는 한부모여성가구주의 인구사회학적 변인 및 경제적 스트레스가 삶에 질 즉 경제적 만족도와 신체적 건강상태 그리고 심리적 디스트레스가 어떻게 영향을 미치는가를 분석하였다. 연구대상은 전국 모자보호시설에 거주하는 430명의 표본을 분석자료 활용했다. SAS 9.1(Statistical Analysis System)을 이용하여 한부모여성가구주의 인구사회학적 특성을 설정된 연구모형에 의해 분석한 결과, 경제적 만족도, 신체적 건강상태, 심리적 디스트레스 즉 삶의 질에 부정적인 영향을 미치는 것으로 나타났다. 또한 한부모여성가구주가 경험하는 경제적 스트레스는 그들의 삶의 질에 부정적인 영향을 미치는 것으로 파악되었다. 특히 심리적 디스트레스에 가장 큰 영향력을 미치는 것으로 나타났으며, 경제적 만족도와 신체적 건강 상태에도 유의미한 영향을 미치는 것으로 나타났다.

• 한국토양비료학회지
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• 제48권3호
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• pp.194-204
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• 2015

Six study sites in Gumi, Goryeong in Gyeongbuk province and Naju in Jeonnam province were selected to investigate soil properties of poorly drained horizons in paddy soils. The horizons were re-established layers which were parent material layers originated from fluvial deposits. Topsoil layers were differentiated from piled parent materials while soil structure of the topsoil layer was massive with striated microstructure. Compaction at soil re-establishment and a lack of structure and aggregate development in these soils may cause the limitation of vertical water movement and result in poorly drained horizons. Soil samples were taken from paddy fields with top soils of sandy loam, silt loam and silty clay loam and re-established soils of coarse and fine texture. The samples were taken from each horizon for the analyses of soil chemical and mineral properties. Soils with re-established soils of coarse texture had greater amounts of sands from top soil texture distributions, while soils with fine texture had greater amounts of silts. Chemical properties of top soils were analyzed from rice cultivated soils at the time of re-establishments and one year after the re-establishments. The coarse texture of the re-established horizons decreased in EC values from 0.23 to $0.11(dS\;m^{-1})$, available phosphate values from 112 to $54(mg\;kg^{-1})$, and exchangeable Ca values from 6.6 to $4.9(cmol_c\;kg^{-1})$. On the other hand, soils with fine texture showed decrease only in pH and exchangeable Ca values. Especially, organic matter and available phosphate contents showed heterogeneous distributions from each horizon. This result may be caused by mixture of plough layer and subsurface layer during and consolidation. Hydraulic conductivity values were low at the boundaries of top soil and parent material layers except SL/coarse soil. Soil microstructure was massive structure without soil clods or pores and showed striated structure. Therefore, re-established paddy fields with fluvial deposits as parent material layers showed limited vertical movements of soil water because of occurrence of compacted layers and less-development of soil clods and aggregates.

• 가정과삶의질연구
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• 제19권4호
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• pp.1-13
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• 2001

The main purpose of this study was to examine factors affecting adolescents materialism and the relations between parenting, materialism and self-esteem in adolescents. The subjects were 439 first-grade high school students in Kang-nam area located in Seoul. The main results were as follows; (1) Material value was not significantly different according to gender, SES and parents education; (2) Adolescents whose parents are permissive or inconsistent have higher material value. On the other hand, adolescents whose parents are affectionate have relatively lower material value. And adolescents who communicate openly with their parents also have lower material value; (3) Lower material value was found for the adolescents whose self-esteem was high; (4) The mediating role of self-esteem was found: Adolescents self-esteem mediate the relations between parenting, parent-child communication style and material value of adolescents.

• 한국압력기기공학회 논문집
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• 제8권2호
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• pp.7-13
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• 2012

A spacer grid which is one of the most important structural components in a pressurized water reactor fuel is an interconnected array of slotted grid straps, welded at the intersections to form an egg-crate structure. The spacer grid is required to not only protect fuel rods stably but also have sufficient lateral crush strength for the sake of enabling shut-down of the nuclear reactor during abnormal operating environments. Then, the lateral crush strength of the spacer grid is closely related with welding quality of the spacer grid. Previous research on the crush strength analysis of the spacer grid had been performed using only parent material properties. In this study, to investigate the effect on the crush strength of the spacer grid when used mechanical properties in weld zone instead of parent material properties, crush strength analysis considering mechanical properties in weld zone obtained from the instrumented indentation technique was performed and compared the results with the previous research.

• Journal of Korean Neurosurgical Society
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• 제30권6호
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• pp.805-812
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• 2001

Objectives : The goal of the surgical management of large and giant aneurysm is complete extirpation of the aneurysms with preservation or reconstruction of the parent artery. To improve the surgical management results of those aneurysms in the future, we review our experience and discuss technical maneuvers and strategies used to avoid potential complications of those aneurysm surgery. Material and Methods : During the past 12 years, thirty six cases of large and giant aneurysms(diameter>19mm) were managed by surgery. The clinical characteristics, treatment methods, surgical complications and outcome of those cases were analyzed and, based on the review of the literatures, the preventive methods of surgical complication related to the clipping of those aneurysms were discussed. Results : The locations of those aneurysms were anterior circulation in 34 cases and posterior circulation in 2 cases. The most frequent site of aneurysmal location was a paraclinoidal region of the anterior circulation. The aneurysms were managed surgically by direct clipping of aneurysmal neck in 31 cases, aneurysmal trapping followed by extracranial-intracranial bypass in 2 cases, proximal clipping of parent artery, aneurysmorrhaphy, and excision of aneurysm followed by end to end anastomosis of parent artery in each one case. Surgical complications occurred in 13 cases. A parent vessel occlusion by thrombus formation and parent vessel stenosis after clipping of aneurysm were the main complications. We obtained good outcome in 27, fair 5, poor 1 and dead in 3 case(s). Conclusion : We conclude that selection of suitable management method for each case, high quality of surgical technique and prevention of complication during operation are important key points for the successful treatment of large and giant aneurysm. The heparinization prior to application of temporary clip on parent vessels, aneurysmal decompression during dissection and clipping of aneurysm, complete closing of the aneurysmal neck and avoiding the narrowing of parent vessel after clipping of aneurysm were the main technical maneuvers used to avoid complications of those aneurysm surgery.

• Journal of Welding and Joining
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• 제3권2호
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• pp.35-41
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• 1985

The fracture toughness of subcritical HAZ in the hot strained weldments of two structural steels(SB 41 and SA 537) has been investigated by COD test method and metallurgical study. The obtained results are summarized as follows; 1. The hot straining embitterment of subcritical HAZ depends on the hot straining amounts of notch tip, and the transition temperature( $T_{tr}$ ) increases with the accumulated hot straining amounts(.SIGMA. vertical bar .delta.$_{t}$vertical bar). 2. The fracture toughness of subcritical HAZ depends on materials and microstructure. The transition temperature( $T_{tr}$ ) of subcritical HAZ in SB 41 is almost same as that of parent material, however in SA 537 the temperature is higher than that of parent and lower than that of transformed HAZ. 3. The subcritical HAZ in SA 537 shows a higher toughness at small amounts of hot straining (.SIGMA. vertical bar .delta. $_{t}$vertical bar<0.3mm).mm).

• 한국과학예술포럼
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• 제30권
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• pp.251-261
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• 2017

금속은 우리 인류 문화 발전에 많은 영향을 준 재료이며, 과거에서부터 현재까지 우리 생활에 밀접한 연관이 있는 재료이다. 선사시대부터 사용해온 금속의 종류는 다양하며 우리나라의 출토 금속 유물 중 철기유물이 가장 큰 비중을 차지하고 있다. 출토 유물에서 전승 유물에 이르기까지 철기 유물들의 존재를 가장 크게 위협하는 것이 부식 진행 과정이며, 부식된 산화물을 제거하기 위해서는 현재 물리적인 제거 방법이 가장 많이 사용되고 있다. 본 논문은 부식 산화물을 제거하는 작업에 대한 내용으로 철기 유물 자체의 모재는 보호하면서 부식 산화물만을 처리하는 화학적 부식 산화물 제거제에 대하여 연구하고자 하였다. 철기 유물의 부식 산화물에 대한 보다 안전하고 효과적인 제거를 위해, 새로운 산성, 알칼리성, 중성의 산화물 제거제를 제조하고, 이의 조성을 다양하게 변화하면서 철기 유물의 부식 산화물 제거 가능성과 최적화된 조성을 찾는 것에 목표를 두고 실행하였으며 근대 유물에 적용하여 그 가능성까지를 검토하였다. 연구결과는 다음과 같다. 첫째, 산성 처리 용액의 경우 철 시편 표면에 산화된 부식물은 일부만이 제거되는 결과를 나타내었다. 둘째, 알칼리성과 중성 처리 용액의 경우 검은색의 부식물이 남은 상태였으나 이는 처리 시간과 처리 용액의 양을 증가시키면 이들도 제거되는 결과를 나타내었다. 셋째, 이 세 종류 용액은 처리 시에 모두 모재 자체에 손상을 주지 않았으며 용액의 농도와 처리 시간의 조절만으로도 유물에 따른 상황 대처가 가능하여 모재나 안정화 부식층을 보호하면서 불안정한 산화물층만을 제거할 수 있는 결과를 나타내었다.

• International Journal of Industrial Entomology and Biomaterials
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• 제19권1호
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• pp.187-192
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• 2009

Silk filament progression study applying backcross breeding with recipient parent Jata and donor parent Daba ecoraces of tropical tasar silkworm, Antheraea mylitta Drury conducted during 2006 to 2008, revealed introgression of filament denier (10.2 d) superior to both parents at BC4 level. Also, the silk waste (0.35%) and filament breaks (2.6 nos) were reduced compared to both parents, while the filament length (973 m) and non break filament (296 m) improved over donor and could attain closer to recipient parent. The best performance of Jata $\times$ Daba at F1 level, with highest silk filament length (1646 m) of 12.5 d denier, denotes heterosis impact on silk trait with parental heterogenousity, an advantage to exploit silk filament yield. The progression of quality in terms of finer filament denier, less silk waste and least number of filament breaks over both parents and improvement in filament length and non break filament over donor parent except for a marginal shortage against recipient at BC4 level indicates the prospects of Jata and Daba ecoraces as source of breeding material for qualitative improvement of tasar silk filament. The study suggests that the commercially important finer denier of tasar silk filament can be attained with minor reduction in silk yield of wild Jata ecorace by adopting repeated backcrossing for four generations with semi domesticated Daba ecorace.

• 대한가정학회지
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• 제30권4호
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• pp.231-247
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• 1992

A Study on Maternal Verbal Control Patterns and Children's Recognition against those. The primary objective of the material presented in this dissertation is the analysis of the maternal verbal control patterns. The major focus is given to the differences between maternal verbal control patterns and children's recognition against those. The purspoe of this study were; 1) to investigate the maternal verbal control patterns recognized by children according to their family and personal surroundings; 2) to investigate the verbal control patterns in mother's response according to the differences of family and personal surroundings; 3) to find the differences between children's recognition and maternal verbal control patterns; 4) How the maternal verbal control patterns recognized by children are? The materials of this study were 81(37; boys, 44; girl)) from kindergarten in Seou. The sample of age used in this study was 5 to 7 years old. The test about maternal verbal environment used the question sheet for reaction between mother and children by Gumperz. The kids got interviews with same questions as mothers with question sheet. The statistical tools used is the analysis of the data were frequency, crosstab, and t-test. The result of the study were summarized as follows; 1) The maternal verbal control patterns recognized by children had differences according to whether living with grand-parent or not. Living with grand-parent are more person-oriented than without grand-parent group. 2) The maternal verbal control patterns of mother response show the differences within mother's academic background, present situation of child, and parent's expection to child. The imperative verbal control pattern was more frequently used of low academic background who just fraduate the middle or high school. The personal verbal control pattern was more frequently used of high educational background's like university graduate or more educated group. 3) The differences between maternal verbal control patterns with children's recognition and with mother response is that mother responseis more person-oriented than children's. 4) The imperative verbal control pattern used command, verbal purnishment, and physical purnishment. the status-oriented verbal control pattern used univesal positional appeals and limited positional appeals. The person-oriented verbal control pattern used child-oriented cognitive affective appeals.