• Analytical Science and Technology
• /
• v.16 no.1
• /
• pp.90-93
• /
• 2003

The standard uncertainties of two different approaches using the same data set are compared and evaluated using an example of gravimetric standard gas preparation. It is shown that the correlation between input quantities should be taken into account for the proper evaluation of uncertainty resulting from random effects.

• International Journal of Advanced Culture Technology
• /
• v.6 no.4
• /
• pp.131-142
• /
• 2018

This research examines the impact of teachers' self-evaluation on their classroom interactions with students. Changes in class behavior were analyzed by following two experienced middle school teachers for one semester of self-evaluation, comparing their classes at the beginning and end of the semester. A qualitative research method was adopted to take, a deeper look at the effect of changes in the teachers' in class actions. Both of the teachers reported positive effects of implementing self-evaluation on their teaching pedagogy, focusing specifically on their interactions with students when asking question and giving feedback. By the end of semester, they were asking broader questions that encouraged their students to engage in deeper thought and, when giving feedback, the class atmosphere was much brighter with better communication due to the positive reinforcement provided. This research supports research into ways to enhance teachers' expertise and improve their teaching via self-evaluation, centering on teachers' actions in the classroom.

• International journal of advanced smart convergence
• /
• v.11 no.4
• /
• pp.149-154
• /
• 2022

With the development of information and communication technology, information literacy and utilization are emerging as basic skills necessary for modern people. Accordingly, information education is becoming a basic literacy education for a nation. Unplugged computing is in the spotlight as a major educational method of information education. The main advantage of unplugged computing is that it is easy to convey basic theories or principles of computer science to students through play activities without the help of special information devices such as computers and tablet PCs. However, studies on student evaluation on unplugged computing have been very insufficient. In this study, students' evaluation standards are developed to maximize the educational effect of unplugged computing. The evaluation standards consist of four areas: participation, interest, satisfaction, and understanding of concepts. The results of this study can be used as a basic study for student evaluation of unplugged computing in the future.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.28 no.2
• /
• pp.342-347
• /
• 1999

The objectives of this study were to investigate biological activities such as nitrite scavenging effect of water and methanol fractions obtained from each green juice(Angelica keiskei, kale, carrot) under different pH conditions, and antioxidant vitamin contents in green juice made of green yellow vegetables. The result shows that nitrite scavenging effect of each green juice was 14.0~91.2% in model system. The methanol fraction provided higher effect than the water fraction. The nitrite degradation was the highest at pH 1.2. Nitrite scavenging effect of methanol fraction obtained from kale juice was 91.2% at pH 1.2 which was the highest among tested samples in this experiments. Consequently, extracts of kale juice were shown to provide the greatest functional properties among the vegetables tested. Contents of vitamine E and C in the extracts of kale were higher than the others.

• Journal of Korea Multimedia Society
• /
• v.25 no.5
• /
• pp.739-747
• /
• 2022

In this study, the effect of augmented reality subtitle content on users was investigated by using a subjective evaluation method and a statistical approach. The human factor was defined as subtitle position and font size. Then, we analyzed the effects of the defined factors on human eye comfort and visibility. Ten participants conducted related survey evaluation tasks with a 1-minute break after viewing the content for 3 minutes.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.40 no.6
• /
• pp.1150-1163
• /
• 2016

This study makes use of meta-analysis to statistically integrate the quantitative results of individual research on the influence of fashion product attributes on purchase; in addition, this study utilizes the effect sizes of correlation coefficients. This study was based on 24 individual studies from January 2000 to March 2015. The meta-analysis analyzed 91 effect sizes and 24 studies and calculated the correlation coefficient effect sizes. A random effect model was employed for meta-analysis because the results for the homogeneity test indicated that the effect sizes of each research were heterogeneous. The analysis results are as follows. First, when the total effect sizes of the fashion product attributes that influence clothing purchase decisions were calculated as .256; this indicated that the effect size is slightly below the mid-sized level. Second, upon examining the effect sizes of the categorized fashion product attributes, the intrinsic attributes yielded .222, extrinsic factors yielded .235, and the compiled attributes yielded .420; this demonstrated that the compiled attributes have a larger effect size than individual attributes. Third, when they were measured by the characteristics of study targets, they were larger for a mixed-gender group than women as well as for ordinary citizens than university students. When the effect sizes were measured based on the characteristics of fashion products as suggested in the study, there were significant differences with respect to sportswear, followed by SPA brand clothing, general clothing, fashion accessories, and designer clothing. The cases where the clothing were purchased in non-retail stores were found to have a slightly larger effect size than those of offline retail stores when the effect sizes were measured based on purchase routes; however, the difference was not statistically significant. Next, an investigation of the trend of effect sizes based on published year via the meta regression analysis indicated slightly larger effect sizes as shown in more recent publications, but this was not statistically significant.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.19 no.3
• /
• pp.371-383
• /
• 2013

Purpose: The purpose of this study was to develop a module for infants in pediatric nursing based on problem-based learning (PBL) and to analyze its effect. Methods: The data used in the study was collected from 79 junior nursing students. For the analysis of the module effect, one group post-test design was applied for measurement of academic achievement. Results: The module for infants is comprised of a 4-hour PBL module. The academic achievement tests are composed of formative (tutor evaluation, self-evaluation) and summative evaluations. The self-evaluation revealed the strong need for PBL and the importance of PBL in the problem solving process and integrative thinking. The mean score of the subjects' learning satisfaction, problem solving process and concept map assessments were all above 50 percent. There was no significant difference in the mean score between the infant PBL and other teaching methods. Conclusion: The PBL proved to be a useful learning method to promote the critical and integrative thinking process.

• Journal of the Earthquake Engineering Society of Korea
• /
• v.13 no.6
• /
• pp.39-46
• /
• 2009

The selection of an evaluation response spectrum can have a significant effect on the seismic fragility evaluation of a structure. A method for modifying the seismic fragility parameters that are calculated based on the design spectrum is described in this study. The modification factor is used to modify the original fragility parameters. The HCLPF (High Confidence of Low Probability of Failure) acceleration levels of the electric system using previous design spectrum and uniform hazard spectrum (UHS) were compared. Finally, seismic risk analyses were performed according to a uniform hazard spectrum. From the results, it was concluded that based on the design spectrum, seismic risk for the electric system might be underestimated.

• Structural Engineering and Mechanics
• /
• v.73 no.2
• /
• pp.167-179
• /
• 2020

This study provides a simplified method for the evaluation of shear lag stress in rectangular box T-joints. The occurrence of shear lag phenomenon in the box T-joint generates stress concentration localized at both web-flange junctions of the beam, which leads to cracking or failure in the weld region of the joint. To prevent such critical circumstance, peak stress at the weld region is required to be checked during a preliminary design stage. In this paper, the shear lag stresses in the T-joints were evaluated using least-work solution in which the longitudinal displacements of the beam flange and web were presumed. The evaluation process considered particularly the effect of column flange flexibility, which was represented by an axial spring model, on the shear lag stress distribution. A simplified method for stress evaluation was provided to avoid solving complex mathematical problems using a stress modification factor β_s from a parametric study. The results showed that the proposed method was valid for predicting the shear lag stress in the box T-joints manually, as well compared with finite element results. The results are further summarized, discussed, and clarified that more flexible column flange caused higher stress concentration.

• The Research Journal of the Costume Culture
• /
• v.28 no.2
• /
• pp.215-228
• /
• 2020

The purpose of this study is to evaluate the attributes of consumers global luxury fashion brands and to find the impact of consumer value, meaning the social and pleasure values derived from brands on product purchase involvement. The method in this study was analysis of a total of 298 responses to a questionnaire. The results indicate, first of all, that among the attribute evaluations of global luxury brands, traditionality and splurge affect purchasing involvement. However, prestige and originality were found to have no influence on purchasing involvement. Second, the responses to the questionnaire indicate that social and pleasure values had a statistically significant effect on purchase of luxury brands. Third, the value of cross-group attributes evaluation and consumption value to differences in purchase involvement has had statistically significant results. In conclusion, the traditional and Splurge natures of the luxury global fashion industry's brand, social consumption value and pleasure consumption value affect the level of purchase involvement. This underscores the importance of attribute Evaluation(traditional and splurge) and consumption value(social and pleasure) when planning consumer marketing strategies for global luxury fashion brands in the future.