• Title/Summary/Keyword: evaluation dimension

Search Result 594, Processing Time 0.025 seconds

Evaluation of Thermal Comfortable Feeling by EEG Analysis

  • Kamijo, Masayoshi;Horiba, Yosuke;Hosoya, Satoshi;Takatera, Masayuki;Sadoyama, Tsugutake;Shimizu, YosiHo
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
    • /
    • 2000.04a
    • /
    • pp.230-234
    • /
    • 2000
  • Thermal comfort by wearing clothes is the important element which gives influence to a clothing comfort. The thermal comfort of clothes have been evaluated by sensory test and physical property of clothes material. To evaluate a thermophysiological comfort. a new evaluation method which measures the physiological response such as electroencephalogram(EEG) is attracting the attention of many people. In the chilly environment, the EEGs in t재 kinds of thermal conditions : with and without clothes were measured. By utilizing the chaos analysis, the behavior of the obtained EEGs were quantiatively expressed in the correlation dimension. As a result, the correlation dimension of the EEGs in being thermal comfortable feeling by putting on clothes, was bigger than the correlation dimension of the EEGs in being cold and discomfort. These results suggest that chaotic analysis of EEG is effective to the quantitative evaluation of thermal esthesis.

  • PDF

Chaoticity Evaluation of Ultrasonic Signals in Welding Defects by 6dB Drop Method (6dB Drop법에 의한 용접 결함 초음파 신호의 카오스성 평가)

  • Yi, Won;Yun, In-Sik
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.23 no.7 s.166
    • /
    • pp.1065-1074
    • /
    • 1999
  • This study proposes the analysis and evaluation method of time series ultrasonic signal using the chaotic feature extraction for ultrasonic pattern recognition. Features extracted from time series data using the chaotic time series signal analysis quantitatively welding defects. For this purpose analysis objective in this study is fractal dimension and Lyapunov exponent. Trajectory changes in the strange attractor indicated that even same type of defects carried substantial difference in chaoticity resulting from distance shills such as 0.5 and 1.0 skip distance. Such differences in chaoticity enables the evaluation of unique features of defects in the weld zone. In experiment fractal(correlation) dimension and Lyapunov exponent extracted from 6dB ultrasonic defect signals of weld zone showed chaoticity. In quantitative chaotic feature extraction, feature values(mean values) of 4.2690 and 0.0907 in the case of porosity and 4.2432 and 0.0888 in the case of incomplete penetration were proposed on the basis of fractal dimension and Lyapunov exponent. Proposed chaotic feature extraction in this study enhances ultrasonic pattern recognition results from defect signals of weld zone such as vertical hole.

The Effect of Application of Non-Financial Dimensions of Balanced Scorecard on Performance Evaluation: An Empirical Study from Saudi Arabia

  • ABDELRAHEEM, Abubkr Ahmed Elhadi;HUSSIEN, Asaad Mubarak
    • The Journal of Asian Finance, Economics and Business
    • /
    • v.9 no.4
    • /
    • pp.63-72
    • /
    • 2022
  • The study applied the non-financial dimensions of the Balanced Scorecard (customer dimension, internal processes dimension, learning, and growth dimension). It was done to evaluate performance and measure the effectiveness of these dimensions on performance evaluation at College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University. The researchers used the descriptive analytical approach to conduct the study to find the effect of these dimensions. Data was collected from the college staff and administrators; 120 questionnaires were distributed, out of which 112 were collected. The questionnaire data were analyzed using exploratory (EFA) and confirmatory factor analysis (CFA), hypotheses were tested using the structural equation modeling (SEM) through the (Spss) and (Amos) software. The study finding showed that the balanced scorecard had a positive contribution in evaluating the performance of the College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University through the dimensions of customers and internal processes, and the study finding revealed that the balanced scorecard has no contribution at performance evaluating the College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University through the dimension of learning and growth.

Development of Auditory Evaluation Scale in Automobile Engine Sound (자동차 엔진음의 청각 감성 평가 척도 개발)

  • Kim, Wonjoon
    • Journal of Korean Society for Quality Management
    • /
    • v.48 no.3
    • /
    • pp.409-420
    • /
    • 2020
  • Purpose: The purpose of this study is to develop a measurement scale for evaluating the auditory affect of automobile engine sounds. Methods: In order to collect affective vocabulary, literature review, user tests, and expert interviews were conducted. Affective vocabulary related to automobile engine sounds was selected through three methods. To develop the evaluation scale, open/close card-sorting and expert interview-based survey method was used. Results: The results of this study are as follows; In order to select the main affective vocabulary from the collected vocabulary, 39 vocabularies with a frequency of 5 or higher were selected as vocabulary expressing the main auditory affect of automobile engine sounds. Each affective vocabulary is divided into three di- mensions, it was confirmed that the conceptual model for the auditory affect of automobile engine sounds is composed of three levels: intuitive, descriptive, and evaluative of hierarchical structure. As a result of the study, four indices of intuitive dimension, seven indices of descriptive dimension, and one index of evaluative dimension were derived from the evaluation scale of the auditory affect in an automobile engine sound. Conclusion: The auditory evaluation scale developed in this study can be used to systematically measure and evaluate the auditory affect of automobile engine sounds.

Quantitative evaluation of midpalatal suture maturation via fractal analysis

  • Kwak, Kyoung Ho;Kim, Seong Sik;Kim, Yong-Il;Kim, Yong-Deok
    • The korean journal of orthodontics
    • /
    • v.46 no.5
    • /
    • pp.323-330
    • /
    • 2016
  • Objective: The purpose of this study was to determine whether the results of fractal analysis can be used as criteria for midpalatal suture maturation evaluation. Methods: The study included 131 subjects aged over 18 years of age (range 18.1-53.4 years) who underwent cone-beam computed tomography. Skeletonized images of the midpalatal suture were obtained via image processing software and used to calculate fractal dimensions. Correlations between maturation stage and fractal dimensions were calculated using Spearman's correlation coefficient. Optimal fractal dimension cut-off values were determined using a receiver operating characteristic curve. Results: The distribution of maturation stages of the midpalatal suture according to the cervical vertebrae maturation index was highly variable, and there was a strong negative correlation between maturation stage and fractal dimension (-0.623, p < 0.001). Fractal dimension was a statistically significant indicator of dichotomous results with regard to maturation stage (area under curve = 0.794, p < 0.001). A test in which fractal dimension was used to predict the resulting variable that splits maturation stages into ABC and D or E yielded an optimal fractal dimension cut-off value of 1.0235. Conclusions: There was a strong negative correlation between fractal dimension and midpalatal suture maturation. Fractal analysis is an objective quantitative method, and therefore we suggest that it may be useful for the evaluation of midpalatal suture maturation.

A Study of Board Function Effectiveness and Organizational Performance in Korean Community Chest Organizations (복지 비영리 조직의 이사회 기능 효과성과 조직성과에 관한 연구 : 한국사회복지 공동모금회를 중심으로)

  • Kang, Chul-Hee;Kim, Hee-Sung
    • Korean Journal of Social Welfare
    • /
    • v.44
    • /
    • pp.7-35
    • /
    • 2001
  • Little empirical study has been conducted concerning board function effectiveness and organizational performance in nonprofit nongovernmental human service organizations in Korea. Using the evaluations of 107 board members and 17 executive directors in Korean Community Chest and 16 regional community chests, this study attempted to examine the level of board function effectiveness and its relationship with organizational performance in these community chests. This study used board function scale developed by Holland and Jackson (1998) to measure board function effectiveness in the following 6 dimensions: contextual dimension: educational dimension: interpersonal dimension: analytical dimension: political dimension: and strategic dimension. This study showed that using 4 points scale, mean of overall board function effectiveness evaluated by board members is 2.62 and mean of overall board function effectiveness evaluated by executive directors is 2.73. That is, it showed that means of overall board function effectiveness are located in the middle point between negative evaluation and positive evaluation. On the other hand, using parametric correlation analysis method, it was found that in these community chests the association between board function effectiveness and organizational performance measured by fund-raising growth rate in $1999{\sim}2000\;and\;1998{\sim}2000$ is very weak and statistically nonsignificant. This study also revealed that using nonparametric correlation analysis method, the association between consensus level in evaluation by board members and executive directors about board function effectiveness, and organizational performance is still very weak and statistically nonsignificant. Finally, this study discussed the direction of future research in board function effectiveness and its relationship with organizational performance and the areas of board management that requires substantial efforts for promoting effectiveness of nonprofit human service organizations in Korea.

  • PDF

A Study on Evaluation Indicator of Social Sustainability Considering Improvement of Quality of Life in Residential Environment (주거환경의 삶의 질 향상을 고려하는 사회적 지속가능성 평가 지표 제안 연구)

  • Chang, Soo-Jung;Nam, Kyung-Sook
    • Korean Institute of Interior Design Journal
    • /
    • v.24 no.6
    • /
    • pp.47-57
    • /
    • 2015
  • In this research, an attempt was made to approach social sustainability of residential environments that have been studied thus far in community-oriented research in a broader perspective, with the aim to induce evaluation indicators for social sustainability of a residential environment that is oriented for enhancement of the residents' life quality. First, evaluation system of social sustainability of residential environments is divided into 6 areas that include regionality, diversity, fairness, satisfaction of diverse needs, social exchange, and participation and decision making. A subdivision was also introduced to account for evaluation properties by area. Second, regarding measurement of life quality in a residential environment, the scope of evaluation was divided into residential environment dimension, resident dimension, and management dimension which can incorporate both objective evaluation and subjective evaluation in consideration of the fact that it involves both physical environment and socio-psychological elements. Third, evaluation indicators by area were collected based on an analysis of preceding studies. For the purpose, a total of 193 indicators were extracted, including 28 items of regionality area, 26 items of diversity area, 28 items of fairness area, 58 items of satisfaction of diverse needs, 34 items of social exchange area, and 19 items of participation and decision making area. The kind of evaluation indicators have meaning in that it can be used as an evaluation tool of social sustainability that can be applied universally from the planning stage. It can be utilized as a basic data for enhancement of life quality and promotion of social values in a residential environment.

Evaluation methods of occlusal vertical dimension and their clinical applications: A narrative review (수직 고경 평가법의 임상적 적용: 문헌 고찰)

  • Sun, Minji;Moon, Hong Seok;Kim, Jaeyoung
    • The Journal of Korean Academy of Prosthodontics
    • /
    • v.60 no.4
    • /
    • pp.301-312
    • /
    • 2022
  • In an extensive oral rehabilitation, determining a proper occlusal vertical dimension is a critical step and the starting point for successful treatment. Since changing the occlusal vertical dimension could be time-consuming, financially challenging, and physically demanding for both clinicians and patients, multi-faceted analysis and careful consideration are essential in the diagnosis and further treatment process. The purpose of this narrative review is to discuss the occlusal vertical dimension and its current issues, and to summarize previous methods of evaluating occlusal vertical dimension to propose clinical guidance for determining a viable occlusal vertical dimension for full-mouth rehabilitation.

The Effect of Motifs in Korean Traditional Women's Dress on Impression Formation of The Wearer -the sorts, types, arrangements of motifs in the dress- (복식무늬가 한복착용자의 인상형성에 미치는 영향 -무늬 종류, 형태, 배열의 조합을 중심으로-)

  • 이혜숙
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.23 no.7
    • /
    • pp.921-928
    • /
    • 1999
  • The purpose of this study were 1) to find out impression dimensions of the dress wearer with various motifs 2) to evaluate the impression effects of motifs in Korean traditional dress for women. The research method was a quasi-experimental with the between subjects design. The experimental materials developed for the study were a set of stimuli and response scale. The stimuli were consisted of 12 drawings with full factorial design of 3 independent variables : motif sorts (2:flower animal) motif types(2: realistic stylized) motif arrangements(3: all over the traditional to modern) The stimuli consisted of color photographs and color of clothing and motifs was controlled the blue. The response scales were consisted of 30 bi-polar adjectives. The subjects were 333 undergraduate college students of Taejon. The data was analyzed by factor analysis MANOVA and Duncan's multiple range test. Results were as follows: 1. The wearer's impression were consisted of the 3 different dimensions : attractiveness · dignity dimension. Interaction effect among motif sorts motif types and motif arrangements was significant on the same dimension. Interaction effect between motif sorts and motif arrangements was significant on the visibility dimension. 3. The motif arrangements were a significant variable on the attractiveness·dignity and the evaluation dimension. The traditional arrangement and the modern arrangement showed more faborable impression and the all over arrangement showed less favorable impression on the attractiveness·dignity dimension. The all over arrangement showed positive impression on the evaluation dimension and the traditional arrangement and the modern arrangement showed negative impression on the same dimension. There were no significant difference between flower sort and animal sort and also no significant difference between realistic type and stylized type in their impression effects.

  • PDF

The Social Psychological Meaning of Occupation-related Identities among Generations (세대에 따른 직업 관련 사회정체성의 사회심리학적 의미)

  • Choi, Yu-Jung;Choi, Set-Byol;Lee, Myoung-Jin
    • Korea journal of population studies
    • /
    • v.34 no.3
    • /
    • pp.55-84
    • /
    • 2011
  • This study initiated with the intention to reveal the social consultations and fissures through a comparative analysis on generational characteristics by indicating occupation-related identities with the concept of social identity supported by theoretical resources. According to the three dimensions of social identity which are evaluation, potency and activity, there was more generational agreement rather than difference toward occupation-related identities. Among the 44 identities, only evaluation dimensions on minister, congressman, plane captain, farmer and potency dimensions on CEO of a major companies, professor, medical doctor, nurse, celebrity, shaman, unemployed person were statistically significant. For 'Leader and Professional', the respondents in their 50's gave high scores in both evaluation and potency dimensions. On the other side, the 30's had negative viewpoints while the 20's and 40's had neutral perspectives. For the potency dimension, the age groups were divided into the 20's, 30's and 40's, 50's; having the younger generations underestimate the potency dimension of such categories. Also for the 'General Occupation', 20's and the 30's relatively devaluated with more distinctive degree toward evaluation dimensions. For religion, 20's and 30's were positive toward buddhist monks while the 40's and 50's were more favorable with priests. For the non-economically active population, the lifetime cycle influenced each generations. When performing a two dimensional analysis toward the 'Leader and Professional' with evaluation and potency on each axis, the 50's highly evaluated both evaluation and potency dimension of such identities. However, for the 40's, 30's and 20's, the average value fell while the focus of the distribution deepened. The 30's had negative perspective toward the evaluation dimension while the 20's reflected critical attitude toward the potency dimension.