• International Journal of Korean Welding Society
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• 제1권1호
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• pp.71-77
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• 2001

The characteristics of the fume generation in a flux cored arc welding were investigated using the fume collection chamber developed. The Korean Standard concerning the method for the evaluation of the fume generation rate(FGR) was updated by the evaluation method obtained through this study. It was found that the effect of humidity in the test environment should be considered and the automatic welding method had to be employed for the purpose of the exact evaluation of the fume generation rate. The results showed that the fume generation rate was influenced by the welding parameters. The important factors were the welding current arc voltage, travel speed, and contact tip to work distance(CTWD) that affected the heat input as well as the torch angle and the shielding gas flow rate that influenced the shielding effect. The fume generation rate increased as the heat input increased and the shielding effect decreased. It was also observed that the effect of the welding current is much grater than the other welding parameters.

• Asia pacific journal of information systems
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• 제34권1호
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• pp.226-247
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• 2024

Most studies on recommender systems to evaluate recommendation performances focus on offline evaluation methods utilizing past customer transaction records. However, evaluating recommendation performance through real-world stimulation becomes challenging. Moreover, such methods cannot evaluate the duration of the recommendation effect. This study measures the personalized recommendation (stimulus) effect when the product recommendation to customers leads to actual purchases and evaluates the duration of the stimulus personalized recommendation effect leading to purchases. The results revealed a 4.58% improvement in recommendation performance in the online environment compared with that in the offline environment. Furthermore, there is little difference in recommendation performance in offline experiments by period, whereas the recommendation performance declines with time in online experiments.

• 한국비블리아학회지
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• 제34권2호
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• pp.295-311
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• 2023

이 연구의 목적은 Kirkpatrick 교육평가모형을 활용하여 사서교사의 계속교육의 효과를 체계적으로 측정하는데 있다. 2022년 하계 『사서교사 1급 정교사 자격연수』에 참여한 사서교사 136명을 대상으로, 3단계의 교육평가를 진행하였다. 1단계는 교육 전반에 관한 만족도 조사이며 교육 후에 조사되었으며, 2단계와 3단계는 교육 전과 교육 후에 조사하였고, 전후 차이 분석으로 실질적인 교육의 효과를 측정하였다. 2단계는 학습평가이며 3단계는 직무역량향상 평가이다. 연구 결과 모든 단계에서 높은 측정 점수가 산출되었고, 2단계 학습평가에서 교육의 전후 효과가 통계적으로 유의한 것으로 나타났다. 3단계 직무역량향상평가에서는 교육 후에 점수가 하락하였으나 통계적으로 유의하지는 않았다. 2단계 평가에서 유의미한 결과를 도출하였으며, 향후 연구에서는 평가모델이 보완되고, 유효한 결과가 나올 수 있는 균형 있는 교육과정의 설계가 필요함을 제언하였다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 추계학술대회논문집A
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• pp.222-227
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• 2001

Nonlinear acoustic effect has been considered as an effective tool for the evaluation of material degradation. In this paper, the applicability of nonlinear acoustic effect to the evaluation of degradation of 2.25Cr-1Mo steel is investigated. Firstly, a number of 2.25Cr-1Mo steel samples were heat-treated, and their damage mechanism was examined. Secondly, Ultrasonic nonlinear parameter was measured. Nonlinear acoustic parameter was found to be clearly sensitive to the material degradation.

• KIEAE Journal
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• 제13권5호
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• pp.23-30
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• 2013

Due to rapid urbanization and industrialization in Korea urban environmental problems such as changes in climate and shortage in green spaces and social problems such as lacks of interactions with neighbors have occurred and community garden appeared as one means to solve such problems. The purpose of this study is to comprehensively identify the evaluation items to measure the effect of community gardens. This study comprehensively researched the evaluation items through literature studies of domestic and overseas documents and verified their contents through case studies of domestic site. As a result of this study, a total of 39 measurement items for evaluation was identified and these items were divided into five large categories of "eco-environmental effect," "production and economic effect," "physical effect," "psychological effect," and "social effect" and these categories could be subdivided into 12 types. This study can be used as references for positively introducing the community gardens in Korea and has a meaning that it can be developed as an analyzing tool for measuring the concrete effects of community gardens when they are introduced in Korea in large numbers hereafter.

• Journal of Nutrition and Health
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• 제36권5호
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• pp.500-507
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• 2003

This study was carried out to evaluate the effects on elementary school children of Internet-based nutrition education programs. The subjects consisted of 80 boys and girls (book-loaming group : 42, Internet-based teaming group : 38) in the 5th grade of elementary school. The results were as follows : The evaluation of Internet-based education programs by Internet-teaming group showed above average in all domains. As the favorite and wholesome menu chose‘nutrition kingdom’(52.6%) made of animation. The educational effect of this program was evaluated by comparing the methods of the Internet-learning group with those of the book-learning group. For effect-evaluation were measured the degree of nutrition knowledge and diversity score of dietary intake from before and after education. Before undertaking the program, there was no significant difference between the two groups in terms of their nutrition knowledge. However, the nutrition knowledge of the Internet-based teaming group after the program had increased significantly (p < 0.01) compared to the book-learning group. There was no significant difference between the two groups in terms of the diversity of dietary intake before the start of the program, but upon its completion, the Internet-based learning group showed a significant increase compared to the book-loaming group (p < 0.05). This suggests that Internet-based educational programs could be effective in drawing the interest and boosting the concentration levels of schoolchildren. In conclusion, Internet-based nutrition education shows the potential to be an effective alternative education method. (Korean J Nutrition 36(5): 500∼507, 2003)

• 한국의류학회지
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• 제34권4호
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• pp.673-685
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• 2010

This study evaluates the fitness of brassieres through size measurement, comparative pattern analysis, cross section map analysis, 3-D shape analysis number, and fitness evaluation with a focus on domestic and overseas brands. Experimental brassieres were selected as mold brassieres of 3/4 cup in 75A size that is considered a popular design. Brands of selected brassiere were 2 domestic brands (A, B), 1 licensed brand (C), and 2 overseas brands (D, E). Subjects were 8 women in their early 20's. Data were analyzed by descriptive statistics, analysis of variance, reliability analysis, and factor analysis. The results were as follows; the size and pattern of brassieres showed a difference by each brand even though brassieres are the same design. In the wearing effect of brassieres, overseas brand brassieres played a major role in the breast-up effect, but they were not appropriate for the somatotype of Korean women. Domestic brand brassieres showed the volume-up effect, that was confirmed by the increasing bust circumference, bust depth when subjects wore it. In addition, the licensed brand brassieres showed the correction effect of body shape. Therefore, when purchasing a brassiere, the most important condition is to consider the individual characteristics of the somatotype. The results of factor analysis through a functional evaluation show that wearing satisfaction, size satisfaction, and the position of the bust point were important factors for fitness satisfaction and purchase.

• Asia Marketing Journal
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• 제18권1호
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• pp.37-53
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• 2016

The purpose of this study is to show that the effectiveness of utilitarian versus hedonic attributefocused advertisement on product evaluation depends on the arousal level of positive emotion, and to explore mediation effect of cognitive response to utilitarian attribute-focused advertisement and affective response to hedonic attribute-focused advertisement on the effectiveness of utilitarian versus hedonic attribute-focused advertisement. This research employs a 2 (arousal level: mild vs. elevated) × 2 (advertisement type: utilitarian vs. hedonic) between-subjects design, and 200 undergraduate students participate in the experiment, in which there are 50 students at each experimental group. The results of ANCOVA with positive emotion level as a covariate on advertised product evaluation show significant interaction effect of arousal level and advertisement type, and no effect of positive emotional level. Both of the mediation effects of the cognitive response and those of the affective response are significant. Participants under mild (elevated) arousal of positive emotion more positively evaluate the product in utilitarian (hedonic) attribute-focused advertisement. The positive effect of utilitarian (hedonic) attributefocused advertisement on product evaluation is partially mediated by cognitive (affective) response to the advertisement when consumers are under the mild (elevated) arousal of positive emotion. The results of this study show that advertisers should use utilitarian (hedonic) attribute-focused advertisement to consumers under the mild (elevated) arousal of ambient positive emotion, which should be searched by exploring what kind of event they have experienced.

• Steel and Composite Structures
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• 제46권6호
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• pp.805-821
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• 2023

This study developed an evaluation system to explore the effect of the environmental temperature on the stress redistribution produced by cable stress relaxation of structural members in a steel cable-stayed bridge. The generalized Maxwell model is used to estimate stress relaxation at different temperatures. The environmental temperature is represented using the thermal coefficients and temperature loads. The fmincon optimization function is used to determine the set of stress relaxation parameters at different temperatures for all cables. The ABAQUS software is employed to investigate the stress redistribution of the steel cable-stayed bridge caused by the cable stress relaxation and the environmental temperature. All of these steps are set up as an evaluation system to save time and ensure the accuracy of the study results. The developed evaluation system is then employed to investigate the effect of environmental temperature and cable type on stress redistribution. These studies' findings show that as environmental temperatures increased up to 40 ℃, the redistribution rate increased by up to 34.9% in some girders. The results also show that the cable type with low relaxation rates should be used in high environmental temperature areas to minimize the effect of cable stress relaxation.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2008년도 추계학술대회
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• pp.78-81
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• 2008

The purpose of this research is to verify whether presentation order has an effect on the evaluation of products. In the empirical study, three types of humidifier and those of toaster were used. These products have 6 different sets of combination (3! = 3${\times}$2${\times}$1), and each set was evaluated by 15 subjects who were provided with two sets of images from humidifier and toaster in empirical study (N=90). Subjects completed measures assessing the five aspects: attractiveness, convenience, hygiene, efficiency and durability of the product. Each of the dependent measures was assessed on Likert-scale ranging 1 to 7. The ratings to the five aspects were added individually. Three types of humidifier and those of toaster were divided into 3 classes in terms of 'class A' which consists of the highest rated product, 'class C' which consists of the lowest rated product, and 'class B' which consists of the rest. Two main findings were discovered: First, the presentation order of both class A and class C influences the product evaluation whereas that of class B does not. As class A was presented as the last one, the subjects evaluated it the most positive. In the case of class C, on the contrary, when it is presented as the first is the best for itself; Secondly, the result shows that presented C-B-A sequence combination has a greater effect on entire evaluation than all other conditions in this study.