• 한국식품영양학회지
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• 제24권3호
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• pp.329-339
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• 2011

The purpose of this study was to compare the effects of service failure magnitude on perceived justice, positive emotion, and revisit intention at restaurants between a collectivist culture(Korea) and an individualistic culture(United States). The results showed that the higher a customer's perception of service failure magnitude, the lower the perceived recovery justices in both cultures. The distributive, procedural, and interactional justices had a favorable effect on positive emotions in both cultures. Other findings revealed that interactional justice was the best predictor of revisit intention in Korea, while distributive justice was the best determinant of revisit intention in the United States. This research suggests that global restaurant managers need to understand how cultural orientation influences consumer perceptions of service failures in order to develop a highly targeted and effective service recovery.

• 산업공학
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• 제16권1호
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• pp.85-93
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• 2003

The purposes of this study are to investigate perceived discomfort for static joint motions, and to propose rankings for the joint motions based on the perceived discomfort. The perceived discomfort was measured through an experiment using the free modulus method of the magnitude estimation, in which ten healthy college-age female students participated. The results showed that joints, joint motions and their levels significantly affected the perceived discomfort at $\alpha$=0.01, and that the interaction of joints and joint motion levels was also significant. Based on the experimental results, three rankings were proposed by joint and joint motions, by joints and by joint motions, which were very different from the existing ones. Especially, the proposed rankings were different from the males' published before in their order and magnitude. These rankings can be used as a valuable tool for better understanding potentially adverse effects of poor working postures in industrial sites, and as basic data for developing the postural classification scheme.

• Journal of Oral Medicine and Pain
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• 제30권2호
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• pp.149-162
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• 2005

본 연구는 20대의 건강한 한국인을 대상으로 설탕, 소금, 구연산, 염산키니네에 대한 초역치 미각강도를 측정하고 그것이 성, 미각기호, 흡연 등과 어떠한 관련성을 가지는지 구명하기 위해서 수행되었다. 연구 대상으로 경북대학교 치과대학에 재학중인 학생들 중에서 남자 61명, 여자 62명을 선정하였으며 이들의 평균연령은 25.2$\pm$2.1세이었다. 초역치 미각강도의 측정을 위해서 소리자극의 감지강도에 대한 미각자극의 감지강도를 상대적으로 평가하는 규모짝짓기법(magnitude matching)을 이용하였다. 미각기호는 9점 척도를 이용하여 측정하였으며 단맛, 매운맛, 짠맛, 신맛에 대한 선호 정도를 조사하였다. 이렇게 하여 얻은 자료를 분석한 결과 초역치 미각강도의 크기와 변화정도가 미각자극의 종류에 따라 전체적으로 비슷한 수준과 형태를 보였으며 피검자 개인별 차이가 비교적 적었다. 또한 미각기호나 성에 따른 초역치 미각강도의 차이를 발견할 수 없었으며, 흡연에 의한 영향도 인정할 수 없었다.

• 대한인간공학회지
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• 제20권2호
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• pp.59-70
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• 2001

White uniformity is one of the important inspection factors determining the image quality of CRT screen. In the full white pattern, white uniformity means the degree of uniform distribution of white color across the whole screen. To elicit the sensitivity factors affecting the decision of the white uniformity quality, experiments in which participants were confronted with 6 evaluation points embedded in 3 measurement groups on a CRT screen were conducted to gather the psychophysical data that are the level of white uniformity subjects perceived and CA100 produced. These data were used to develop a modified CIE1976 equation for calculating white uniformity. Performance comparison between the original CIE1976 equation and the modified equation was conducted in terms of accuracy test and magnitude estimation. It was concluded the modified equation is more sensitive in the change of white uniformity, compared to the original CIE1976 equation.

• 한국조경학회지
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• 제33권1호
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• pp.10-18
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• 2005

The main concept of social carrying capacity is based on the principle that 'there are limits to the number of users a given recreation site can accommodate in order to provide quality of recreation experience'. The quality of the experience is revealed as user's satisfaction and perceived crowding. In this respect, studies of social carrying capacity have been frequently conducted by measuring perceived crowding and satisfaction. The purpose of this study is to identify the variables affecting perceived crowding, and causality bet-ween satisfaction and perceived crowding. Four hundred seventy six visitors were selected at Naejangsan National park on peak day of autumn excursion through on-site survey. The collected data were applied by factor analysis for categorizing the research variables, and multiple regression for finding the causality among variables. The study results are follows. The expectation of crowding, as a normative variable for perceived crowding, are categorized by three factors; circulation, user facility, and landscape. The circulation factor is the most powerful affecting perceived crowding among three factor. The landscape factor, however, do not have statistical significance on perceived crowding. The causality between satisfaction and perceived crowding is found. Although this relation is significant in statistics, magnitude of the coefficient is very small. It might be interpreted that satisfaction cannot be predicted simply from a user's perception of crowding, but a multi-dimensional concept such as adaptation and coping behavior.

• 한국안전학회지
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• 제16권1호
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• pp.73-78
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• 2001

It has been proposed that the acceptable level of discomfort was a valid measure of postural loading. Although the number of women employees has increased at a much faster rate than men workers did and female workers are thought to be more vulnerable to musculoskeletal disorders, most previous studies dealt with perceived discomforts for joint motions focused on male subjects. This study aims to measure perceived discomfort ratings of females for static joint motions. Ten female subjects participated in the experiment measuring perceived discomforts, in which almost every possible joint motion was included and the free modulus method of the magnitude estimation was employed. The results showed that discomfort levels were dependent on the joint motions and joints, and subjective discomfort ratings of women were significantly larger than those of men.

• Journal of the Optical Society of Korea
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• 제18권1호
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• pp.89-94
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• 2014

It is established that the perceived image contrast is affected by surround luminance. In order to get the same perceived image contrast, the optimum surround compensation ratios for those surround conditions is needed. Much research has been performed for dark, dim, and average surrounds. In this study, a wide range of surround luminance from dark up to $2087cd/m^2$ was considered. Using magnitude estimation method, the change in perceived brightness of six test stimuli was measured under seven surround conditions; dark, dim, 2 levels of average, bright, and 2 levels of over-bright surrounds. To drive the perceived image contrast from the perceived brightness, two different definitions of contrast were tested. Their calculated results were compared with the visual data of our previous work. And to conclude, the perceived contrast compensation ratios were 1:1.11:1.2 for average, dim and dark surrounds. These were close to CIECAM02 model (1:1.17:1.31). Besides, for average, bright, over-bright1 and over-bright2 surrounds the ratios 1:1.17:1.42:1.69 were determined. For intermediate or more extreme surround conditions, the compensation ratio was obtained from the linear interpolation or extrapolation.

• 대한인간공학회지
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• 제23권3호
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• pp.89-99
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• 2004

A comprehensive psychophysical scaling system, multiple-modality magnitude estimation system (MMES) has been designed to measure subjective multidimensional human perception. Unlike paper-based magnitude estimation systems, the MMES has an additional auditory peripheral cue that varies with corresponding visual magnitude. As the simplest, purely psychological case, bimodal divided-attention conditions were simulated to establish the superiority of the MMES. Subjects were given brief presentations of pairs of simultaneous stimuli consisting of visual line-lengths and auditory white-noise levels. In the visual or auditory focused-attention conditions, only the line-lengths or the noise levels perceived should be reported respectively. On the other hand, in the divided-attention conditions, both the line-lengths and the noise levels should be reported. There were no significant differences among the different attention conditions. Human performance was better when the proportion of magnitude in stimulus pairs were identically presented. The additional auditory cues in the MMES improved the correlations between the magnitude of stimuli and MMES values in the divided-attention conditions.

• 산업공학
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• 제10권3호
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• pp.197-208
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• 1997

In workplace design, an ergonomic solution should ensure low postural stress in the operator during his/her work. Stress caused by awkward working postures of the trunk, shoulders and legs can result in fatigue, discomfort, musculo-skeletal disorders and nerve entrapment syndromes. Since discomfort and musculo-skeletal disorders are both related to exposure to biomechanical load on the musculo-skeletal system, minimization of discomfort will contribute to reduction of the risk for musculo-skeletal disorders as well. Therefore, in this study, perceived discomfort on the human body joints was measured in the standing postures using the magnitude estimation in order to have a standardized numerical scale for joint discomfort. Nine healthy graduate students participated voluntarily in the laboratory study. The results revealed that perceived discomfort of all the joints increased as the joints deviated from neutral position. Especially, it showed drastic increment on perceived discomfort when deviation from neutral position in each human body joint increased from 75% to 100%. in terms of relative range of motion(R0M). On the basis of these experimental results, a preliminary ranking for assessment of stressfulness of non-neutral postures around the human body joints was suggested.

• Child Health Nursing Research
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• 제24권4호
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• pp.353-363
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• 2018

Purpose: The purpose of this study was to investigate pediatric nurses' perceptions regarding in end-of-life care and turnover intention. Methods: A cross-sectional descriptive study was performed among 111 hospital nurses. Pediatric nurses' perceptions of obstacles and supportive behaviors were measured using the Pediatric Nurses' Perceptions of End of Life Care Questionnaire which was translated into Korean and turnover intention was measured using the Korean Nurse Turnover Intention Scale (K-NTIS). Results: The supportive behavior with the highest perceived magnitude was 'Physicians who are compassionate, but very clear about prognosis.' The obstacle with the highest perceived magnitude was 'Instigating painful treatments when there is no hope of recovery.' Pediatric nurses' perceptions of obstacles in end-of-life care showed statistically significant differences depending on whether nurses received end-of-life care education (t=2.02, p=.046). The perception of obstacles in end-of-life care was positively correlated with turnover intention (intensity r=.28, p=.002) (frequency r=.20, p=.027). Conclusion: These results suggest that pediatric nurses' perception of obstacles and supportive behaviors in end-of-life care need to be assessed when considering turnover intention. Furthermore, psychological counseling should be offered to nurses to prevent burnout and reduce moral distress which is correlated with the turnover rate.