• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.132-139
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• 2008

The blade vibration problem of bladed disk is the most critical subject to consider since it directly affects the stable performance of the engine as well as life of the engine. Especially, due to complicated vibration pattern of the bladed disk, more effort was required for vibration analysis and test. The research of measuring the vibration of the bladed disk, using NSMS(Non-intrusive stress measurement) instead of Aeromechanics testing method requiring slip ring or telemetry system with strain gauge, was successful. These testing can report the actual stresses seen on the blades; detect synchronous resonances that are the source of high cycle fatigue (HCF) in blades; measure individual blade mis-tuning and coupled resonances in bladed disks. In order to minimize the error being created due to heat expansion, the tip timing sensor is installed parallel to the blade trailing edge, yielding optimal result. Also, when working on finite element analysis, the whole bladed disk has gone through three-dimensional analysis, evaluating the family mode. The result of the analysis matched well with the test result.

• Journal of Families and Better Life
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• v.8 no.2
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• pp.119-134
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• 1990

The purpose of this study were to investigate; The contact of housewives with governmental public advertisement about the energy conservation, general tendency about the energy conservation consciousness and behavior. For these purposed, a survey was conducted using questionnaires. Data analysis were conducted from 367 housewives with children in Seoul. Used statistical method were Frequency Distribution, percentile, Mean, one Way Anova, t-test, F-test, Pearson's Correlation, Multiple regression Analysis and Path Analysis. Major findings are as follows. 1) Level of public advertisement contact was low. In contrast to , level of energy conservation consciousness, consciousness change, and behavior was adequately high. 2) Statistically significant difference were found in advertisement contact according to the husband's age , Energy conservation consciousness change according to husband's occupation, and energy conservation behavior according to family life cycle. 3) Energy conservation consciousness changes were increased by advertisement contact. Energy conservation behaviors were increased by conservation consciousness and the degree of conservation consciousness change. 4) Governmental public advertisement about the energy conservation has both direct and indirect effect on the energy conservation behavior. From these finds, the following suggestions are made. Governmental effort about the energy conservation advertisement is needed to be activated. And the implications for the future study was need to incorporate the psychological variables in energy conservation study.

• Korean journal of food and cookery science
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• v.19 no.6
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• pp.745-752
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• 2003

The aim of this study was to test the behavioral intent-based model of the foodservice related complaint handling. Accordingly, this study examined the effects of complaint handling on the university students' behaviort based on the word-of-mouth intent and repurchase intent. The findings from this study were as follows. KMO and Bartlett's test statistics showed the data fit factor analysis. The factor loadings, eigenvalues, ％ of variance, and communalities showed that the convergent validity was supported, the average variance extracted estimates and shared variance showed that the discriminant validity is supported, and composite alpha showed that the internal consistency was supported. It was found that some of main effects on the word-of-mouth intent and the repurchase intent were significant. It was found that some of interactional effects of the complaint type, the degree of correction effort, and the satisfaction with the complaint handling were significant. Overall, the results provide some insights into the types of foodservice related complaint handling strategies or the tactics that can be effectively employed by operators who manage complaint handling for customers dining at fast food restaurants.

• Journal of the Society of Naval Architects of Korea
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• v.47 no.4
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• pp.477-486
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• 2010

During sailing by wind-driven thrust on the sail, a catamaran sailing yacht generates leeway and heeling. For predicting sail force, a model test was carried out according to running attitude. Through the model test, drag and side force of the real ship was predicted. A purpose of this study is to find sail force to C.E from changed attitude during running direction. By balance of hull and sail, a heeling force of designed sail is predicted. Also through heeling force and driving force, total sail force and direction from C.E are considered with changed mast including leeway and heeling.

• Journal of Families and Better Life
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• v.28 no.1
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• pp.1-11
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• 2010

The purpose of this study is to compare the cognition of SIDS as the first step for decreasing the SIDS death rate for the infant and for activity of infant-care in Korea. Participants were 409 child care center directors and 146 parents from 500 child care center directors and 200 parents who using child care center facilities for their children in Seoul. For analysis of research questions, frequencies, Cronbach $\alpha$, t-test,One-way ANOVA, Scheffee test were used with SPSSWIN 15.0. Through this study, we find the child care center directors have good cognition for it, but their effort for SIDS prevention is limited, because they don't have any official prevention education from authorized training center. Even though the parents have a low awareness for SIDS prevention than child care center directors, but they have high score in endeavor for SIDS precaution. Both child care center directors and parents want to receive systematic information from government side. Our infant should have a opportunity to grow up health and stability from reducing the risk of SIDS. In western countries such as U.S.A., U.K. and Japan have studied to decrease the SIDS death rate from thirty years ago, they have already government and social organization for preventing the SIDS. Nowadays, as you know well, our country birth-rate is falling by 1.08, therefore, it is important to decrease the infant death rate for keeping with our population. Also, it is relevant to the child-welfare and the child-safety and more better the child-care.

• Journal of Korean Academy of Nursing
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• v.43 no.2
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• pp.176-184
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• 2013

Purpose: The purpose of this study was to investigate expectations regarding aging by middle-aged women in the community, and identify factors contributing to their expectations about aging. Methods: Participants in the survey for this study were 303 middle-aged women from community health centers and religious facilities in Seoul, Gyeonggi Province, and Chungcheongbuk Province. Data were collected from March 2 to April 17, 2012 using self-report structured questionnaires. The instruments were the Health Perceptions, Rosenberg Self-esteem Scale (RSES), Family APGAR, Expectations Regarding Aging (ERA-12). The data were analyzed using t-test, one-way ANOVA, Scheffe test, Pearson correlation coefficients and hierarchical multiple regression with IBM SPSS/WIN 20.0 program. Results: Perceived health status (${\beta}$=0.16, p=.009) and self-esteem (${\beta}$=0.20, p=.001) of middle-aged women were identified as significant predictors of expectations regarding aging, after adjusting for age, education, occupation, monthly income and menstrual status. Conclusion: These results suggest that nurses should make an effort to improve expectations about aging among middle-aged women. Ultimately, community health programs for middle aged women need to be developed to achieve successful aging.

• Journal of Korean Association for Spatial Structures
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• v.5 no.2 s.16
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• pp.57-63
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• 2005

The reinforced concrete becomes deteriorated. In strengthening of reinforced concrete structure, it is recently useing FRP. The purpose of this study is to investigate the shear resisting effort of filling-up CFRP in reinforced concrete beams without web reinforced. Six specimens were manufactured and tested. In the test result, it was analysis. The main variables in the test were a space and volume of CFRP.

• The Journal of Korean Physical Therapy
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• v.5 no.1
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• pp.3-8
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• 1993

The purpose of this study was to investigate the specificity of the effort of massage on hamstring muscles extensibility a9 measured by fingertip to floor test. The participant were healthy young men(n=25). Manual massage was applied to the posterior aspects of the both thigh (hamsting portion) during 20 mins. We measured four times ; that is, after rest 20 mins-before massage, immediately after massage, immediately after massage and 20 mins. after massage. As the middle fingers are reaching beyond the floor level, the level was considered as ( + ) level. And the middle fingers did not touch the 리oor, the level was considered as ( - ) level. Results were as fellows : 1) There was significant difference between group 1 and group 2(P<0.05), 2) There was no significant difference between group 2 and group 3(P>0.05). 3) There was no significant difference between group 3 and group 4(P>0.05). Therefore, the extensibility of hamstring muscles was increased after massage more than rest during 20 mins, before massage, and the effects of massage application were prolonged during 20 mins, after massage.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.401-414
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• 2008

The object of quality test for weapons system embedded software is support about implement of high quality system which coincided with requirements of weapons system embedded. There are some examples which developed quality evaluation methodology, evaluation method for general embedded software. But the concrete system for weapons system embedded software was not constructed yet. Recently, various weapons system embedded software were developed and used but they require the effort for the quality. In this paper, we developed the evaluation modules and the quality test tables which can evaluate based on ISO/IEC 12119 for weapons system embedded software evaluation.

• Communications for Statistical Applications and Methods
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• v.25 no.5
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• pp.501-512
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• 2018

We propose Sequential Patient Recruitment Monitoring (SPRM), a new monitoring procedure for patient recruitment in a clinical trial. Based on the sequential probability ratio test using improved stopping boundaries by Woodroofe, the method allows for continuous monitoring of the rate of enrollment. It gives an early warning when the recruitment is unlikely to achieve the target enrollment. The packet data approach combined with the Central Limit Theorem makes the method robust to the distribution of the recruitment entry pattern. A straightforward application of the counting process framework can be used to estimate the probability to achieve the target enrollment under the assumption that the current trend continues. The required extension of the recruitment period can also be derived for a given confidence level. SPRM is a new, continuous patient recruitment monitoring tool that provides an opportunity for corrective action in a timely manner. It is suitable for the modern, centralized data management environment and requires minimal effort to maintain. We illustrate this method using real data from two well-known, multicenter, phase III clinical trials.