• Title, Summary, Keyword: subjective evaluation

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Analysis and Comparability of the Subjective and Objective Evaluation for Home Appliance's Quality (가전제품의 품질에 대한 객관적 평가와 주관적 평가기준 비교 분석)

  • Huh, Kyung-Ok
    • Journal of Korean Home Management Association
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    • v.27 no.3
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    • pp.213-224
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    • 2009
  • This research aims to analyze and compare the objective and subjective evaluation criteria for home appliances. In addition, this research examined the correlation between those evaluation criteria. Furthermore, consumers are divided by the level of the differences between those criteria; consumer groups whose subjective evaluation level for the quality of home appliances is greater than objective evaluation level, consumer groups whose subjective evaluation level is almost the same, and consumer groups whose subjective evaluation level for the quality of home appliances is lower than objective evaluation level, and this study investigated the differences those three groups by the socio-demographic characteristics and consumers' behavior in the stage of purchase. Results of this research could be summarized as follows. First of all, there were statistically significant between the level of the objective and subjective evaluation in the quality of home appliances. Second, when consumers purchased the expensive home appliance, imported-brand home appliance, home appliances in department store, the level of subjective evaluation level for the quality of home appliances is higher than objective evaluation level. Third, the level of satisfaction for the price, quality, AS, overall satisfaction, and the level of willingness to repurchase were higher in consumer groups whose subjective evaluation level was higher than objective evaluation level.

The Comparison between Subjective Evaluation and Objective Evaluation of Fabric Hand (직물의 주관적인 태 평가와 객관적인 태 평가의 비교)

  • 김경애;이미식
    • Textile Science and Engineering
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    • v.35 no.9
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    • pp.592-600
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    • 1998
  • The effects of alkaline hydrolysis on the properties of polyester fabrics were evaluated by subjective and objective hand measurements. Koshi, hari, kisimi and shinayakasa showed high correlation with all subjective hand values of sense of weight, surface properties, moisture related properties, flexibility, thermal character, however, shari and fukurami revealed low correlation with all subjective hand value. Comparing objective total hand value and subjective fabric preference, total hand value did not show a meaningful difference as the weight loss increased, however, subjective preference showed a meaningful difference. According to the result of comparison between mechanical property and subjective hand evaluation, hand value and subjective hand value, total hand value and fabric preference, it is thought that subjective evaluation is more proper for the hand evaluation of alkaline hydrolyzed polyester thin fabrics.

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A Study on the Quantification of Master Subjective Evaluation in the Safety of Ship's Transit (선박통항 안전성에서의 주관적 평가의 정량화에 관한 기초연구)

  • 이동섭;윤점동;정태권
    • Journal of the Korean Institute of Navigation
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    • v.18 no.4
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    • pp.1-9
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    • 1994
  • Assessment of the safety of ship's transit in the narrow channel consist of the maneuvering safety determined by the chance of running aground, the maneuvering difficulty determined by ship's workload and master's subjective evaluation. To examine the relation between master's subjective evaluation and maneuvering safety, this utilizes a real-time and full-mission shiphandling simulator in the Korea Marine Training & Research Institutes(KMTRI). The vessel chosen was 60,000-ton, Panamax-type ship. The findings regarding master's subjective evaluation were as follows: -Relation between master's subjective evaluation and common logarithms of stranding probability is linear. -Stranding probability with more than 0.001 is master's subjective evaluation with more than 5.

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The Effects of Sujective Knowledge on Information Search and Evaluation Rules for Apparel Products (의류제품에 대한 주관적 지식이 정보탐색과 평가규칙에 미치는 영향)

  • 김은영;이영선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.9
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    • pp.1378-1389
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    • 2002
  • This study was to identify dimensions of subjective knowledge and to test the structural model of the effect of subjective knowledge on information search and evaluation rules for apparel products. A questionnaire was administered to 668 females living in Seoul, Taejon, and Cheongju, and the data were analysed by using LISREL 8. The results of this study were as follows: First, consumers' subjective knowledge regarding apparel products consisted of five factors; Style knowledge, Fashion Knowledge, Store Knowledge, Fabric/Management Knowledge, and Brand knowledge. Those factors were influenced by the experience related with apparel products. Second, the subjective knowledge influenced information searches. That is, internal search was significantly influenced by fashion knowledge and store knowledge, while external search was significantly influenced by fashion knowledge and fabric/management knowledge. Third, the subjective knowledge had indirect effects on evaluation rules via search activities (e.g., internal and external), suggesting that the internal search was mediated in relationship between subjective knowledge and compensatory rule, while the urtemal search was mediated in the relationship between subjective knowledge and noncompensatory rule. Therefore, this study implies that subjective knowledge plays an important role to explain consumers' decision making processes such as information search and evaluation.

An Improvement of Evaluation Items for a Subjective Workload Assessment in Nuclear Power Plants (원자력발전소의 주관적 업무량 평가를 위한 평가 항목 개선)

  • Park, Jae-kyu;Lee, Yong-Hee
    • Journal of the Ergonomics Society of Korea
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    • v.29 no.4
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    • pp.687-691
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    • 2010
  • Workload assessment is one of the important elements of the human factors evaluation for the nuclear power plants in operation. This paper describes a further study upon the additional elements of the workload which elements should be considered in the subjective workload assessment. We have tried to predict the burden of the work and to improve the work through a comparison of the objective workload and the subjective workload in the previous studies in nuclear power plants. However, there is a restriction to perform a precise assessment because of the limitations of the method itself. The objective workload assessment is performed by relative comparison using the quadrant analysis with objective workload and subjective workload because there were no clear criteria of objective workload assessment. And the subjective workload assessment is performed by NASA-TLX (NASA Task Load Index) which includes six evaluation dimensions of subjective workload. NASA-TLX is difficult to grasp the other aspects that could influence on the subjective workload because the analysis relies on predetermined assessment items. We conduct a factor analysis between the factors that affect the workload and the assessment adopted from ISO 10075 and NASA-TLX. At the same time, this study suggests other evaluation elements which can be added for subjective workload assessment except for evaluation elements of NASA-TLX.

Real-Time Subjective Sensibility Assessment System Using Digitizer (디지타이저를 이용한 실시간 주관적 감성 평가 시스템)

  • Jeong, Sun-Cheol;Min, Byeong-Chan;Min, Byeong-Un;Kim, Yu-Na;Sin, Mi-Gyeong;Kim, Cheol-Jung
    • Journal of the Ergonomics Society of Korea
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    • v.20 no.1
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    • pp.1-13
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    • 2001
  • Conventionally the subjective assessment for measuring the human sensibility is always performed after an experiment or a stimulus is terminated. This aftermath method can not. exactly, reflect the human sensibility which is produced at the moment of the presentation of the stimulus. In the present study, a new real-time subjective assessment system is developed. The system is composed of two parts: the sensibility input part and the sensibility evaluation part. The sensibility input part gets the values, which are recorded on the input board using pen-mouse, from the evaluation of each subject on his/her own subjective sensibility for the stimulus. The sensibility evaluation part displays the level of the pleasantness and arousal on one and two dimension in real time. An experiment on the design of the input board that any subject can easily and exactly evaluates one's own sensibility is also included in this study. The system can be used for evaluating the human subjective sensibility in real time, and, also, can be applied to other subjective assessment tests that require real time evaluation.

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An effective evaluation method for the subjective sensibility of linen-like silk (의마 가공된 견직물의 효율적인 주관적 감성평가 방법)

  • You, Ji-Ho;Lee, Jung-Soon
    • Korean Journal of Human Ecology
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    • v.15 no.3
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    • pp.439-447
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    • 2006
  • The purpose of this study is to explore the accuracy and reliability of subjective evaluation instruments in evaluating sensibility of similar fabrics, Kendall's coefficient of concordance W (agreement among subjects) and Spearman rank correlation coefficient (reproducibility after 1 week) were used to evaluate which one is more efficient. Eight kinds of linen-like silk fabrics finished with polyurethane resin were used, Subjective evaluation instruments such as rating scale method, contrasting method against a control, rank ordering method, paired comparison and Quad analysis were used, 'Stiffness and Pliability' and 'Preference of summer fabric' were estimated, From the result of subjective stiffness and pliability, which are effective on objective properties of fabric, the rating scale method in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient were given the highest score, From the result of subjective preference of summer fabric, which are effective on individual sensibility, contrasting method against a control in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient revealed the highest score, Regarding the accuracy, reliability and efficiency, Quad analysis was an efficient method for subjective evaluation of linen-like silk fabrics.

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A Study on Correlation between Subjective and Objective Evaluation of Comfort for a Vehicle Passing Bumpers (범퍼 통과 차량의 안락성에 대한 주관평가와 객관평가의 상관성 도출에 관한 연구)

  • Ahn, Se-Jin;Yoo, Wan-Suk;Kim, Min-Seok;Kim, Myung-Hwan
    • Proceedings of the KSME Conference
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    • pp.1736-1740
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    • 2003
  • There have been various studies to find out the correlation between subjective and objective evaluation ride comfort in vehicle. To be proper, subjective evaluation considers the signal pattern of vibration generated by vehicle. In this study, driving test is carried out to extract the correlation between subjective evaluation by subjects and vibration signals measured on the seat when a test vehicle is passing over test bumpers, which have two sorts of width change and height change respectively. A unique reference bumper is used to be compared with the relative comfort of test bumpers.

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Evaluation of Subjective Responses for Urban Environmental Sounds to Create Comfortable Environment (쾌적환경 조성을 위한 도시 환경음의 주관반응 평가)

  • Park, Hyeon-Ku;Kim, Hang;Kook, Chan;Jang, Gil-Soo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.670-673
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    • 2005
  • For the comfortable housing life, an urban environment should give comfort and pleasantness to people living in house and in city. There are lots of environmental conditions in city affecting house and life and most of all the noise pollution have been become factor that makes people's life hard without need to say. Recently researches have been performed to create comfortable urban environment and a study on the evaluation of urban environmental sounds is now undergoing. This study aimed to analyse the subjective characteristics through the subjective evaluation to the sounds measured with physical parameters and eventually to find out evaluation method for urban environmental sounds. Vocabularies applied to previous studies were used for the subjective evaluation and sound sources recorded in specific places were presented with picture at the same time.

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Development of an Evaluation Method for Tactile Properties of Sportswear Fabrics Using Quad Analysis (Quad 분석법을 이용한 스포츠웨어 소재의 촉감 평가법 개발)

  • 김주용
    • Textile Science and Engineering
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    • v.41 no.5
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    • pp.312-316
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    • 2004
  • Recently, many researches have been focused on functional fabrics with a high level of wear comfort. Many descriptive models have been developed based on the subjective feeling determined through a series of wear trials. Furthermore, some comprehensive standardized methods were developed by combining the measurement devices and statistical modeling methodology. Most of researches in the field take a similar approach that is to try to build prediction models for objective comforts by finding correlation between a series of data measured and subjective rating. The approaches, however, have serious problems of low repeatability and reproducibility. This research is aimed at exploring the feasibility of applying the Quad analysis to evaluate subjective tactile properties. The traditional 'rating scale method' has been replaced by a new method to produce more reliable subjective evaluation results. The tactile properties of the sportswear fabrics in the market have been measured by KES-FB, and correlated with the subjective rating obtained by the paired comparison experiments of the Quad analysis. The evaluation method developed in this study has been found to be more reliable both in repeatability and reproducibility.