• 산업경영시스템학회지
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• 제24권67호
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• pp.83-92
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• 2001

This paper is to measure and evaluate the degree of customer satisfaction for internet search engines. The service quality scale is developed after testing validity and reliability through the result of inquiring into the literature and the interview of university students. The stepwise regression analysis using MINITAB is used to analyze the survey results.

• 대한간호학회지
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• 제20권2호
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• pp.131-141
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• 1990

Recently, the rate of cesarean section in Korea has been increasing. The results of several previous studies in foreign countries on the emotional responses of cesarean section mothers showed that they might experience difficulties in the mother- infant interaction due to fatigue, lack of early mother - infant interaction, disappointments, anger, feelings of loss of control, and other factors. Human behavior is said to be determined by one's self concept, and self concept is influenced by both internal and external environmental factors. A scale to measure the self concept of cesarean section mothers was needed in order to identify those who might have difficulties in the mother- infant interactions in future. The purposes of this study were to develop a measuring scale, and to test its reliability and validity. The process of this study was as follows. A structured interview was done with 50 cesarean section and vaginal delivery mothers to find their state of emotional reaction after giving birth to their babies. Based on the results of the interviews, a 50 items Likert scale was developed. The self concept of 268 cesarean section and vaginal delivery mothers who were hospitalized at six hospital in seoul were measured, during the period between Feb. 1 and April 30. Reviewing the discriminating power of each item by means of crosstabulation, ten items were selected for the final scale. The reliability and validity of this ten item scale were tested by Cronbach's alpha and t-test, using spss pc＋package. The results of this study and recommendation are as follows. 1. The ten selected items were as follows. I feel pains in my breast. (－) I have a good appetite now. (＋) I feel pains in my flank. (－) I feel fine now. (＋) My body seems to have returned to its prepregnant state. (＋) Thinking of the delivery process, I feel sorry. (－) I want to hold my baby in my arms. (＋) I want to keep my own life, even if I became a mother. (－) I want to delegate the care of the baby to my mother / mother in law. (－) I think baby is my alter ego. (＋) 2. The reliability of this scale was tested by Cronbach's alpha, and the coefficient of this scale was .8066. 3. The construct validity of this scale was tested by means of known group methods. The value of self concept for cesarean section mother was significantly lower than for vaginal delivery mothers(t＝-5.51, df＝266, p＝0.007). 4. The criterion validity of this scale was tested indirectly. Though this scale could discriminate the differences in the self concept between cesarean section and vaginal delivery mothers, the five items on the personal self concept scale didn's show any differences between cesarean section and vaginal delivery mothers. Therefore, the study indicates that those who shows lower values in the personal self concept measurement, that is, lower than 12.03 points, could be regaled as “risk mothers” 5. Further studies using this scale to clarify the influencing factors on negative self concept are strongly recommended.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1996년도 춘계학술대회논문집; 부산수산대학교, 10 May 1996
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• pp.95-99
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• 1996

In this paper, we proposed a method to measure the gap between the magnetic pole and the levitated object applying the inductance characteristic which vary according to gap. We made a driving circuit which supply the control input PWM(Pulse Width Modulation) signal and the carrier PWM signal to estimate the gap. Because the inductance is a function of gap, and the current of the carrier signal is a function of the inductance. We investigated the validity of the proposed method through the experimental results.

• 대한예방한의학회지
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• 제9권1호
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• pp.17-36
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• 2005

The objective of this study is to present basic data for producing tools to measure Yangseng of the elderly aged older than 65 by reassessing the validity and reliability of such tools already developed. In the present study, total 855 subjects were divided into 4 groups and given 31 question for the ultimate factor analysis of each item. The results cloud be summarized as follows: 1. In case of 'don't have sex in drunken state or right after dinner'(the 31st item of sex live yangseng). factor loading came out proportionally in 3 factors such as factor 4=0.358, factor 5=0.389 and factor 6=0.386. As they all failed to reach the general standard of 0.5 or more and even the minimum standard of 0.4 or more, the 31st item was deleted from the questionnaires. 2. From the factor analysis after exclusion of the 31st item, factor loading of the 25th item of sleep yangseng 'go to bed and get up regularly' appeared to be proportional in 2 factor(factor 4=0.393 and factor 7=0.373). Since it was shown that the 25th item could not be classified into a category but interacted with others in common and didn't satisfy the minimum standard of 0.4, it was deleted form the questionnaires, too. 3. From the factor analysis conducted after excluding the item numbers 31 and 25, factor loading of the 12th item of diet yangseng 'do not eat much' turned out to be relatively high with such values as factor 5=0.518 and factor 3=0.453. As it was, however, tied up with the factor of exercise yangseng, it was also deleted. In conclusion, 28 items after excluding the item numbers 12, 25 and 31 form 4 group showed the same results as divided into 8 factor with high grade of reliability and validity, evidencing the assumption that they can be employed practically to measure yangseng of the elderly aged 65 and oder.

• 한국산학기술학회논문지
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• 제20권12호
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• pp.747-757
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• 2019

본 연구는 노인환자가 인식하는 간호사와의 상호작용을 측정하기 위해 개발된 the Korean version of Nurse-Patient Interaction Scale (K-NPIS)을 한국 요양병원에 입원한 노인환자를 대상으로 간호사와의 상호작용을 측정의 신뢰도와 타당도를 검증하려는 목적으로 시행되었다. 진주시, 순천시, 남원시에 소재하는 4개의 요양병원에 입원한 노인환자 202명을 대상으로 신뢰도와 타당도 검증을 실시하였다. 문항분석과 내적일관성 검증을 통해 K-NPIS의 Cronbach α 값은 .96이었다. 전문가들을 통한 내용타당도 검증에서 내용타당도 지수가 0.8 이상으로 확인되었으며, 확인적 요인분석을 거쳐 최종 단일속성으로 구성된 12개 문항 각 10점 척도의 최종 도구가 도출되었으며, 재원기간에 따라 K-NPIS의 점수가 유의하게 차이가 나(p=.042) 판별타당도도 검증되었고, 천장효과나 바닥효과는 나타나지 않았다. 이와 같이 K-NPIS는 신뢰도와 타당도가 높은 도구임이 검증되어 요양병원에서 노인환자를 대상으로 간호사-환자의 상호작용을 측정하는 도구로 사용되는데 적절한 것으로 보이나 장차 준거타당도를 검증할 필요가 있다. K-NPIS는 노인환자가 인식하고 있는 간호사와의 상호작용을 자가보고 형식으로 측정하는 것이므로, 노인환자와의 상호작용을 기반으로 한 돌봄 중재의 성과를 평가하여 간호서비스 질 향상에 기여할 수 있을 것으로 기대된다.

• Journal of Biosystems Engineering
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• 제19권4호
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• pp.369-379
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• 1994

A computer vision system consisted of a microscope, a CCD camera, a frame grabber and a personal computer was used to analyze spraying pattern. An algorithm was developed for the system to measure size of droplets including overlapped droplets, to count number of droplets, and to estimate spray deposition in a certain area from the data obtained. A series of experiment was carried out to test validity of the algorithm. The experiment resulted that accuracy of the droplet size measurement, accuracy of counting the number of droplets and the estimation of spray deposition were within an acceptable range. It was concluded from the results that the computer vision system operated by the developed algorithm is very useful tool to analyze spraying pattern.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2004년도 춘계 학술발표대회 개요집
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• pp.212-214
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• 2004

It is widely recognized that the residual stress of weldment affects steel construction and causes fracture initiation of welded structures. It is necessary to know since the power plants adopt a variety of welding processes distribution and magnitude of residual stresses. Therefore the purpose of present study is to investigate the validity of the indentation method to measure residual stresses of steel plates by residual stresses measured form the specimens of hot reheater pipes, cold reheater pipes and feed water lines used in power plants.

• 과학교육연구지
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• 제42권3호
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• pp.308-321
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• 2018

이 연구는 과학탐구 상황에서 반회의주의적 태도를 조사하는 문항을 개발하는 것이 목적이다. 문헌 연구, 전문가 검토, 통계적 타당도 검증을 거쳐 문항을 개발하고, 성별, 계열별로 점수 차이를 확인하였다. 이 연구를 위하여 363명의 고등학생들이 참여하였다. 문항 타당도 확인을 위하여 라쉬 분석, 내적 일관성 신뢰도 확인 등을 수행하였고, 성별과 계열별 반회의주의적 태도의 점수 비교를 위하여 이원분산분석을 확인하였다. 연구 결과 과학탐구상황에서 반회의주의 태도를 측정할 수 있는 23개 리커트 형태의 자기보고형 검사도구를 개발하였다. 반회의주의적 태도 측정을 위하여 과학탐구 상황을 크게 '문제 인식과 가설 생성', '실험 설계', '관찰', '설명과 해석'으로 구분하여 각 구인별로 측정할 수 있는 다수의 문항을 개발하였다. 둘째, 과학탐구상황에서 반회의주의 태도 측정 문항의 타당도와 신뢰도를 엄격한 방법을 통해 확인하였다. 라쉬 분석을 통해 다차원 부분점수모델의 분석의 적합성을 확인하였으며, 라쉬 분석을 통해 문항 적합도를 확인한 결과 23개 문항 모두 적합으로 나타났다. 다양한 신뢰도 지수도 적합한 것으로 나타났다. 남학생과 여학생, 문과계열과 이과계열별로 구분하여 반회의주의적 태도를 비교한 결과 유의미한 차이를 나타낸 비교는 실험설계에서 계열별 차이를 제외하고 없는 것으로 확인되었다. 개발된 문항들을 활용하여 과학탐구 과정에서 반회의주의적 태도를 점검하고, 과학탐구 수업의 효과를 비교하는데 활용될 수 있을 것이다.

• 대한가정학회지
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• 제32권2호
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• pp.255-263
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• 1994

The objectives of this study were : 1) to find research trends on lifestyles 2) to analyze the lifestyle patterns of middle class residents in Seoul and 3) to develop a standarized instrument to measure lifestyles. Questionnaires were administered to 1615 homemakers in Seoul, The statistics with the SPSS software package was used for factor analysis. The major findings were as follows: the lifestyles of middle class residents in Seoul were categorized into six patterns : Fashion oriented Interior Design Oriented Economy Concerned Simplicity in Eating Hobby Oriented and Health Concerned. A standarized instrument using validity and reliability testes for lifestyles was developed.

• 한국소음진동공학회논문집
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• 제18권3호
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• pp.293-298
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• 2008

Non-contact modal testing for longitudinal modes of a pipe is discussed in this work. The suggested method can generate and measure longitudinal vibrations without mechanical contact by using the coupling phenomenon between deformation and magnetic field, known as the magnetostrictive effect. This effect has been used to generate and measure ultrasonic waves, but seldom used to deal with audible vibrations. In this investigation, the validity of the developed method in a typical vibration frequency range is checked with an Inconel pipe being used in nuclear power plants.