• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2003년도 춘계학술발표대회 논문집
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• pp.180-183
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• 2003

In this work. a potential inexpensive epoxy resin. epoxidized soybean oil (ESO) was synthesized and applied as a toughening agent for 4.4'-tetradiglycidyl diaminodiphenyl methane (TGDDM). The chemical structure of ESO was characterized by FT-IR, $^1H NMR, and ^{13}C NMR$ spectroscopy. The curing behaviors. thermal stabilities. fracture toughness. and flexural strength of TGDDM/ESO blend systems were investigated by using the dynamic DSC. thermogravimetric analysis (TGA). and flexural tests. The thermal stabilities of TGDDM/ESO blend systems were decreased with increasing ESO contents. whereas the critical stress intensity factor ($K_{IC}$) and flexural strength ($\sigma_f$) were increased with ESO contents up to 10 wt% ESO.

• 한국생활과학회지
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• 제14권6호
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• pp.1017-1025
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• 2005

The purpose of this paper was to investigate the relationship between customer orientation and sales training. Data were obtained from 297 apparel salespeople working at six department stores in Daegu. Statistics used for data analysis were frequency, factor analysis, correlation, and t-test. The respondents were classified into 3 groups; high, medium, and low customer-oriented groups based on the mean score of customer orientation, and the high and the low were compared in training contents and educational methods. Based on factor analysis, four factors were extracted from 27 items of training content. Two of four factors were significantly correlated with customer orientation. The regression analysis showed that customer service and duration of work had significant effects on customer orientation. Also, the results were found that there were significant differences between the high and the low customer-oriented group in training contents which salespeople want to have in the future. However, there were not significant differences between the two groups in educational methods.

• International Journal of Contents
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• 제16권3호
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• pp.87-100
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• 2020

This research explored the impact the thoughts and opinions of lecturers teaching university general English courses have on their virtual classes and discussed the differences and similarities in their perspectives. As a research methodology, the Q-method was used, which usually consists of five steps: Q-population, Q-statements, Q-participants, Q-sorting, and factor analysis using PQMethod, a computer software program. A total of 30 statements were finally selected and 26 people directly involved in teaching online university general English courses were selected as participants in this study. Based on the results of the factor analysis, this research discovered three different factors, which were interaction & content-oriented, online teaching favored, and content-oriented. The results of this study can contribute to developing the future directions of virtual university general English classes to help learners improve their English skills and prepare lecturers for the future.

• 한국콘텐츠학회논문지
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• 제12권7호
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• pp.445-452
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• 2012

본 연구는 충적하천에서 실측된 현장자료를 이용하여 흐름에 관한 저항계수와 관계식을 분석하고 유도하였으며, 연구에는 자연하천 자료 1,865개와 식생하천 자료 739개가 포함된 2,604개 자료가 사용되었다. 회귀분석에 의해 Manning 조도계수와 Darcy-Weisbach 마찰계수 관계식이 자연하천 하상재료와 식생하천 식생자료의 유량과 마찰경사를 함수로 하는 멱함수 형의 식으로 각각 유도되었다.

• 가정과삶의질연구
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• 제14권2호
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• pp.201-214
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• 1996

The purpose of this study was to investigate the social-psycholigcal marital conflict contents and marital conflict degree and find out how socio-demographic variables had an effect on marital conflict. For these pourposes 265 couples in the early marriage stage in seoul were randomly selected. The data were analysed through statistical methods such as frequency percentile paired t-test F-test Scheffe-test factor analysis. The major finding of this study were as follows: First the main social-psychological marital conflict contents was the attitude or habit of life communication sexual life personality and intimacy. Second the degree of marital conflict was relatively low. Taking a look at each conflict fact wives was higher than husbands in the degree of the conflict in intimacy factor. Third among socio-demographic variables level of family income wife's education and marriage style had influences on the the marital conflict degree.

• International Journal of Contents
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• 제17권1호
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• pp.18-26
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• 2021

The obesity leads to be the result of the weakening of anatomical structure as well as the gravity effect. And, the obesity interferes with normal sagittal balance and fails to maintain a straight posture with minimal energy. Therefore, the obesity can be an important factor in causing back pain by changing the lumbar lordosis. In this study, we will present an appropriate angle of incidence for obese people to reduce the image distortion of L4, L5 during a general anteroposterior radiography examination. To reduce image distortion according to the change of lordosis, the angle of incidence was applied 9 ° and 21 ° to L4 and L5 vertebra body when obesity and low back pain (LBP) perform the general anteroposterior radiography examination.

• 한국조리학회지
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• 제9권2호
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• pp.22-32
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• 2003

시판 치즈 케익 제품간에 향, 맛, 색, 당도, 질감 등에 차이를 보이는 것으로 나타났는데, 이 가운데 당도가 높은 제품의 선호도가 낮을 뿐만 아니라, 실험 대상자들이 질감 면에서 견고한 치즈 케익을 선호한다는 사실을 발견할 수 있었다. 또한 관능검사를 기초로 치즈 케익의 선호도에 영향을 끼치는 요인들 가운데 가장 중요한 역할을 하는 것이 맛이며, 다음으로는 질감과 향임이 밝혀져 일관성 있는 결과가 도출되었다. 이러한 실험결과는 향후 업소에서 디저트 품질개선을 위해 고려해야할 단서를 제공한다. 하지만 본 연구는 디저트 품질개선과 관련한 향후 연구의 기초를 제공하는 것으로 한계를 설정하였다. 이후의 연구들은 본 연구의 결과를 토대로 신제품 개발 연구와 제품 교체로 인한 업소성과 비교연구 등과 같이 보다 과학적이고 실무적 관점에서 시도될 필요가 있다.

• 수산해양교육연구
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• 제25권1호
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• pp.113-127
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• 2013

This study investigated the direction of program development in emotional education through storytelling without separating intellectual education in current schooling. As the basic research on program development for elementary school students' emotional intelligence, this study examined how storytelling affects program development in emotional education, and the direction of program contents and structures using storytelling. Firstly, current storytelling and existing programs used for emotional education were analyzed and the direction of program development in emotional education was investigated. Secondly, the structures and procedures of programs for emotional education through storytelling were examined. Finally, stressed contents and items by each factor consisting of emotional intelligence related to the curriculum, and more discussions to consider were inquired. For systematic emotional education, there must be efforts made on developing contents of each factor comprising emotional intelligence; and teaching must be done through the interrelatedness among home, society and school. Furthermore, the construction of social system across the country is required. In conclusion, this study suggest the emotional education needs new curricula based on narrative, because it is dependent on personal emotions and situations.

• Korean Journal of Acupuncture
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• 제23권1호
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• pp.37-44
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• 2006

Objective : To investigate the effects of Poncirus trifoliata Pharmacopuncture on lowering lipid and contents of serum tumor necrosis $factor-{\alpha}$ $(TNF-{\alpha})$ and interleukin-6 (IL-6) in hyperlipidemic rats. Methods : Triglyceride, total cholesterol, $TNF-{\alpha}$, and IL-6 levels in Poncirus trifoliata Pharmacopuncture groups were compared with those in the control group. Results : Concentration of triglyceride and total cholesterol in plasma was decreased in the Poncirus trifoliata Pharmacopuncture groups. In Poncirus trifoliata Pharmacopuncre groups, plasma LDL-cholesterol showed a lower value and HDL-cholesterol showed a higher value than those of the control group. Contents of $TNF-{\alpha}$ was decreased in the Poncirus trifoliata Pharmacopuncture groups. Contents of IL-6, however, were not significantly different. Conclusions : The results suggest that Poncirus trifoliata Pharmacopuncture may have an impact on lipid metabolism to potentially prevent development of diabetes mellitus and accompanying cerebrovascular diseases.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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• pp.190-192
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• 1994

Microwave dielectric properties of $0.15(Ba_xSr_{0.05})O-0.15(Sm_{2(1-y)}Nd_{2y})O_3-0.7TiO_2$ ($x=0.9{\sim}1.0[mol.]$, y=6[m/0]) and $0.15(Ba_{0.95}Sr_{0.05})O-0.15(Sm_{2(1-y)}Nd_{2y})O_3-zTiO_2$(y=6[m/o], $z=0.66{\sim}0.7[mol.]$) ceramics were investigated with the contents of BaO and $TiO_2$. In the specimen with contents of BaO (0.975[mol.]), dielectric constant, quality factor and temperature coefficient of resonant frequency have good values of 76.52, 3001(at 3[GHz]), +0.71[ppm/$^{\circ}C$], respectively. In the specimen with contents of $TiO_2$(0.69[mol.]), dielectric constant, quality factor and temperature coefficient of resonant frequency showed the maximum values of 80.89, 3057(at 3[GHz]), +26.12[ppm/$^{\circ}C$], respectively.