• 디지털융복합연구
• /
• 제15권10호
• /
• pp.103-111
• /
• 2017

본 연구는 탐색적 요인분석과 확인적 요인분석에 대한 특성과 그 차이점에 대하여 살펴보고, 동일한 데이터를 활용하여 탐색적 요인분석과 확인적 요인분석의 분석과정 및 결과를 비교분석함으로써 두 방법론의 올바른 이해와 적용에 대하여 알아보고자 한다. 한편, 실증분석 결과는 아래와 같다. 탐색적 요인분석에서는 판별타당도가 저해되는 p.1, p.3이 제거된 반면, 확인적 요인분에서는 집중타당도가 저해되는 p.3가 제거 되었다. 탐색적 요인분석의 경우 다수의 측정변수를 소수의 요인으로 축약하는 분석과정(다소 부족한 이론적배경)인 반면, 확인적 요인분석은 측정변수와 잠재변수들 간의 관계를 파악 및 확인하는 과정(강력한 이론적배경)으로 동일한 데이터를 활용한다 하더라도 두 방법론은 언제든지 다른 결과 값이 도출될 수 있는 바, 데이터의 성격 등에 따라 올바른 방법론의 활용이 요구된다는 시사점을 보여주고 있다.

• 대한통합의학회지
• /
• 제8권3호
• /
• pp.173-180
• /
• 2020

Purpose : The aim of this study was to assess the intra- and inter-rater reliability and validity of measurements of head, neck, and pelvis posture using a mobile application in subjects with forward head posture. Methods : Forty-eight volunteers (22 men, 26 women) participated in this study. Two raters independently examined whole body picture images in a lateral standing posture with arms crossed using a CA-Smart Posture Reminder (CA-SPR), and a rater took and calculated posture images twice to assess reliability. We measured five parameters: craniovertebral angle 1 (CVA1), anterior shoulder translation (AST), pelvic tilt (PT), knee angle (KA), and ankle angle (AA) in the subject's sagittal plane using CA-SPR. We examined whole spine X-ray images in the same position to assess validity. We measured four variables in the subjects: CVA2, translation distance (AHT), anterior pelvic plane (APP), and sacral slope (SS). The intra- and inter-rater reliability were calculated using the intraclass correlation coefficient (ICC). Convergent validity was calculated using Pearson's correlation coefficient. Results : The intra-rater reliability (ICC=.889 -.989) and inter-rater reliability (ICC=.800 -.980) were excellent for all variables measured using CA-SPR. The variables measured using CA-SPR and X-ray were significantly positively correlated (r=.623, p<.01). However, the correlation of the variables in the pelvis was not statistically significant. Conclusion : This study shows that a mobile application (CA-SPR) is a useful tool for measuring head and neck posture in subjects with forward head posture. However, further study is needed to measure pelvic variables when using a mobile application.

• 한국정밀공학회지
• /
• 제29권1호
• /
• pp.13-18
• /
• 2012

In this study, silicone injection molding technology with curved thermoplastic insert was developed to produce super-hydrophobic surface. Thermoplastic insert part and injection mold design of base plastic cover were performed to produce cost effective hydrophobic surface part. An optimization process of part thickness for thermoplastic insert part was performed with transient thermal analysis under silicone over-molding process condition. Structural thermal analysis of silicone injection mold was also performed to obtain uniform temperature condition on the surface of micro-patterned mold core. Super-hydrophobic surface for the silicone injection molded part with thermoplastic insert could be verified from the measurement of contact angle. It was shown that the averaged contact angle was over $140^{\circ}$.

• 대한간호학회지
• /
• 제45권5호
• /
• pp.650-660
• /
• 2015

Purpose: The purpose of this study was to develop an instrument to measure the parenting behavior of primary caregivers of children in early childhood. Methods: An instrument was developed according to Devellis's instrument development process. The participants in this study who completed the main survey were 370 mothers and grandmothers. The survey was conducted from June 1 to July 30, 2014, and collected data were analyzed using item analysis, half-split reliability and Cronbach's ${\alpha}$ coefficient, exploratory and confirmatory factor analysis, convergent validity. Results: The factor structure of the instrument showed the cumulative variance as 55.7% in the factor analysis. As a result of a confirmatory factor analysis, a four-factor structure was found to be appropriate, and the construct validity and convergent validity of the instrument were thereby confirmed. The finalized parenting behavior instrument consisted of 26 items and four independent factors: affectionate, laissez-faire, educational and impulsive. A five-point Likert scale was employed, and a higher score in a particular factor showed that most of the behaviors belonged to the factor. Conclusion: The instrument developed in this study was found to be reliable and valid, and can be used to develop parent-child relationship building.

• 대한간호학회지
• /
• 제44권5호
• /
• pp.563-572
• /
• 2014

Purpose: The study was done to identify the construct validity and reliability of the life transition scale (LTS) for parents who have children with autism. Methods: Exploratory factor analysis (EFA) and confirmative factor analysis (CFA) were conducted to identify the most adequate measurement model for structural validity. Convergent validity and discriminant validity were also conducted for structural validity. Data were collected from 208 parents through self-reported questionnaires and analyzed with SPSS/WIN 15.0 and AMOS 20.0 version. Results: A four factor-structure was validated (${\chi}^2$=541.23, p<.001, GFI=.82, RMSEA=.07, IFI=.89, CFI=.89, PNFI=.73, Q (${\chi}^2/df$)=2.20) at the 3rd order of EFA and CFA, and factors were named as denying, wandering, despairing, and accepting. Both convergent and determinant validity for LTS were 100%. Cronbach's alphas for the reliability of each structure were .77-.90 and .83 for total structure. Conclusion: The four structures, 24-item instrument showed satisfactory reliability and validity. LTS has the potential to be appropriate for assessing the transition process of life for parents who have children with autism and provides basic directions for differentiated support and care at each stage.

• 한국측량학회지
• /
• 제6권1호
• /
• pp.13-24
• /
• 1988

원형 구조물의 표면에 대한 삼차원 위치 결정은 여러 면에서 그 응용이 기대된다. 구조물의 진단을 고려해 볼때 이것은 광범위한 범주에서 하나의 의미있는 Topic이 될 것이며, 이러한 위치 결정을 함에 있어 수렴사진의 활용은 종내의 측량에 비해 많은 이점을 가지고 있다. 본 논문은 Metric과 Non-metric Camera를 이용하여 원사형의 피사체를 수렴사진으로 촬영하고 Bundle-Adjustment에 의해 그 결과를 고찰한 것이다. Bundle-Adjustment에 의한 오차 해석으로부터 표준 오차를 비교함과 아울러 Metric과 Nonmetric Camera로부터 얻은 피사체의 삼차원 좌표도 비교하였다.

• 대한간호학회지
• /
• 제49권1호
• /
• pp.80-91
• /
• 2019

Purpose: This study attempted to develop a scale that measures the level of patients' recognition of the nurses' care, based on Watson's caring theory, and confirmed its reliability and validity. Methods: The items were developed through a literature review and an expert content validity test. The questionnaires were administered to 285 inpatients of internal medicine and surgical units at two general hospitals. Construct validity was tested using exploratory and confirmatory factor analysis, and reliability was tested using Cronbach's alpha. Results: This process resulted in a preliminary scale composed of 34 items; We used item analysis and five exploratory factor analyses, and consequently selected 14 items composed of three factors (respect, genuineness, and relationality). The confirmatory factor analysis verified the model fit and convergent and discriminant validity of the final items; criterion validity was confirmed with the positive correlation with the measurement scale of the patient-perceived quality of nursing. The overall scale reliability had a Cronbach's alpha of .92, which indicated internal consistency and reliability. Conclusion: The developed scale showed content, construct, and criterion validity, and reliability, as well as convergent validity for each item and discriminant validity between the factors. This makes it suitable for use in a diverse range of future studies on nurse communication using structural equation models.

• 동서간호학연구지
• /
• 제16권1호
• /
• pp.53-60
• /
• 2010

Purpose: The purpose of this study was to identify and evaluate outcome measurement scales of nursing education such as communication, professionalism, leadership, and critical thinking. Methods: A methodological study design was used to evaluate the reliability and validity of the scales. Survey was done to the students (n=407) enrolled in baccalaureate nursing schools. Using convenience sampling method, we tried to include all grades of students. Internal consistency, convergent validity and group comparison were used to evaluate the reliability and validity of the scales. Results: All scales were reliable and valid. Only convergent validity of the scale to measure critical thinking was relatively low. It suggested that critical thinking skill and disposition might be measured separately. Also it was inefficient to measure the nursing education outcomes with separate scales. Conclusions: It is recommended to develop a new integrative scale to measure nursing education outcomes. Also it is necessary to set the norm of nursing students to evaluate nursing education outcomes for the quality control of nursing education.

• 대한간호학회지
• /
• 제52권1호
• /
• pp.80-91
• /
• 2022

Purpose: This study developed an instrument to evaluate the health empowerment of North Korean women refugees and examined its validity and reliability. Methods: Through literature review and focused group interviews, 66 preliminary items with three constructs, including perceived control, perceived competence, and goal internalization were selected based on Menon's psychological health empowerment model. A questionnaire survey was conducted with 239 North Korean women refugees in the community from August 31 to September 4, 2020. Content, construct, convergent, and discriminative validity were evaluated. Cronbach's α was used to evaluate the reliability of scale. Results: The final instrument consisted of 31 items with three factors that were identified through confirmatory factor analysis. The convergent validity showed that the correlation coefficient was .52 (p < .001), which confirmed the validity of the developed measurement tool. Cronbach's α for all the items was .94, and Cronbach's α for the factors was .76~.91. Conclusion: This health empowerment scale has been developed to include aspects of health empowerment, provide a conceptual framework, and offer objective indicators to evaluate the effectiveness of a health education program.

• 여성건강간호학회지
• /
• 제30권2호
• /
• pp.107-116
• /
• 2024

Purpose: This study was conducted to develop a cultural competence scale for nurses regarding the lesbian, gay, bisexual, and transgender (LGBT) community and to test its validity and reliability. Methods: The study adhered to the 8-step process outlined by DeVellis, with an initial set of 25 items derived through a literature review and individual interviews. Following an expert validity assessment, 24 items were validated. Subsequently, a preliminary survey was conducted among 23 nurses with experience caring for LGBT patients. Data were then collected from a final sample of 322 nurses using the 24 items. Item analysis, item-total score correlation, examination of construct and convergent validity, and reliability testing were performed. Results: The item-level content validity index exceeded .80, and the explanatory power of the construct validity was 63.63%. The factor loadings varied between 0.57 and 0.80. The scale comprised five factors: cultural skills, with seven items; cultural awareness, with five items; cultural encounters, with three items; cultural pursuit, with three items; and cultural knowledge, with three items; totaling 21 items. Convergent validity demonstrated a high correlation, affirming the scale's validity. Internal consistency analysis yielded an overall reliability coefficient of 0.97, signifying very high reliability. Each item is scored from 1 to 6 (total score range, 21-126), with higher scores reflecting greater cultural competence in LGBT care. Conclusion: This scale facilitates the measurement of LGBT cultural competence among nurses. Therefore, its use should provide foundational data to support LGBT-focused nursing education programs.