• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.3
• /
• pp.1066-1070
• /
• 2010

This study was to examine the effectiveness of Neurofeedback training by observing the pre and post brain wave measurement results of about S kindergarten kids 40 (experimental group 20 comparative group 20) subjects who have shown resistance stress, in between the months of Jan. 2008 and Dec. 2008. As the brain waves are adjusted by time series linear analysis, the result confirmed the differences of both resistance stress. The result of the study suggest Neurofeedback technique's possibility in positively affecting the subjects' mental state.

• Journal of Korean society of Dental Hygiene
• /
• v.21 no.4
• /
• pp.481-489
• /
• 2021

Objectives: This study was conducted to understand the effect of learners' self-determination on class participation, focusing on the feedback type of educators. Methods: A survey was conducted from May 1 to May 31 2021 on dental hygiene students, and a total of 151 valid responses were analyzed. The questionnaire consisted of general characteristics, self-determination, class participation, and educator's feedback type. The analysis method used correlation analysis and hierarchical regression analysis. Results: In relation to self-determination, class participation, and feedback type of educators, self-determination was positive feedback (r=0.338, p<0.01), class participation was corrective feedback (r=0.418, p<0.01), and positive feedback was correction (r=0.742, p<0.01). As a result of the mediating effect of the educator's feedback type in the relationship between self-determination and class participation, it was found to be significant by partially mediating positive and corrective feedback. Conclusions: It was found that the right to self-determination influences class participation based on positive feedback and corrective feedback of educators. It relates to efforts to strengthen learners' self-determination and provide appropriate types of feedback from educators.

• Journal of the Korea Computer Graphics Society
• /
• v.22 no.5
• /
• pp.37-47
• /
• 2016

This study evaluate user feedback such as physiological response and facial expression when subjects play a social decision making game with interactive virtual agent partners. In the social decision making game, subjects will invest some of money or credit in one of projects. Their partners (virtual agents) will also invest in one of the projects. They will interact with different kinds of virtual agents which behave reciprocated or unreciprocated behavior while expressing socially affective facial expression. The total money or credit which the subject earns is contingent on partner's choice. From this study, I observed that subject's appraisal of interaction with cooperative/uncooperative (or friendly/unfriendly) virtual agents in an investment game result in increased autonomic and somatic response, and that these responses were observed by physiological signal and facial expression in real time. For assessing user feedback, Photoplethysmography (PPG) sensor, Galvanic skin response (GSR) sensor while capturing front facial image of the subject from web camera were used. After all trials, subjects asked to answer to questions associated with evaluation how much these interaction with virtual agents affect to their appraisals.

• Journal of The Korean Association For Science Education
• /
• v.24 no.3
• /
• pp.646-658
• /
• 2004

In this study, the effects of feedback types in self-assessment on the students' science concept understanding and science-related attitudes were investigated. Student's perceptions towards the self-assessment and the feedback provided were also examined. Ten classes from a middle school were chosen. Five of those classes were assigned to the comparative group that any type of feedback was not provided and the other five classes were assigned to the experimental group which feedback was provided. The experimental group was further divided into three groups for implement of three types of feedback. Experimental group A was given feedback in the form of written comments and experimental group B was provided feedback through correct-wrong response to the students answer. Experimental group C was provided oral feedback to the whole class. The tests of science-related attitudes were administered before and after the instruction period. The science concepts understanding test was done only after the instruction. There were significant differences between the experimental group and comparative group in understanding of scientific concepts. The enhancement of science-related attitudes was also significantly higher for the experimental group. There were significant differences between the experimental groups in science-related attitudes. However, there were no significant differences in understanding of scientific concepts in relation to the types of feedback in experiment groups. Interviews with the students of the experimental groups showed that students had positive attitudes towards self-assessment and the types of feedback. And they regarded self-assessment and feedback as helping them understand the science concepts. In conclusion, it was acknowledged that providing feedback in self-assessment showed considerably positive influences on the improvement of the understanding of scientific concepts and science-related attitudes.

• The Journal of the Korea Contents Association
• /
• v.15 no.12
• /
• pp.185-192
• /
• 2015

This study analyzed the spatial interrelation between living wages and economic variables and how they operate based on systems thinking theory to understand what value living wages have as policy instruments and why they are necessary. Results from this study can be summed as follows. First, the relationship between living wages and economic variables shows close interaction at a considerable level. In particular, mutual feedback which connects to laborers' standards of living, consumption, business, and economy was operating closely. Second, largely three positive (+) feedback loops were operating in the feedback structure of living wages and economic variables. This can be interpreted to mean that positive economic variables which are associated with living wages have the possibility of growth. Also, it can mean that the minimum wage system did not fully fulfill its role. Through these study results, it can be learned that living wages have sufficient value as a policy means and that it is advisable to allow living wages to exceed simple application levels in the public sector to expand into the private sector, to bring positive change to the economic system.

• Journal of the Korean Chemical Society
• /
• v.51 no.2
• /
• pp.193-200
• /
• 2007

This study investigated the effects of situational context feedback in CAI upon students' conceptual understanding, science learning motivation, and the perception of CAI. Seventh graders (N = 114) from a coed middle school in Incheon were assigned to the situational context feedback CAI (SCF-CAI), the feedback CAI (F-CAI) and the CAI groups, and were taught about ‘three states of matter' and ‘motion of molecules' for 8 class hours. Prior science achievement test score used as a blocking variable. Two-way ANCOVA results revealed that the conceptual understanding test scores of the SCF-CAI group were significantly higher than those of the other groups. For the higher achievers, the scores of the F-CAI group in science learning motivation test were significantly higher than those of the CAI group. However, there was no significant difference among the lower achievers of three groups. The higher achievers in the SCFCAI and the F-CAI groups perceived the CAI more positively than those of the CAI group. The lower achievers in the FCAI group perceived the CAI more negatively than those of the other groups. Educational implications are discussed.

• Journal of KIISE:Databases
• /
• v.34 no.3
• /
• pp.193-205
• /
• 2007

Increasing amount of digital images requires more accurate and faster way of image retrieval. So far, image retrieval method includes content-based retrieval and keyword based retrieval, the former utilizing visual features such as color and brightness and the latter utilizing keywords which describe the image. However, the effectiveness of these methods as to providing the exact images the user wanted has been under question. Hence, many researchers have been working on relevance feedback, a process in which responses from the user are given as a feedback during the retrieval session in order to define user’s need and provide improved result. Yet, the methods which have employed relevance feedback also have drawbacks since several feedbacks are necessary to have appropriate result and the feedback information can not be reused. In this paper, a novel retrieval model has been proposed which annotates an image with a keyword and modifies the confidence level of the keyword in response to the user’s feedback. In the proposed model, not only the images which have received positive feedback but also the other images with the visual features similar to the features used to distinguish the positive image are subjected to confidence modification. This enables modifying large amount of images with only a few feedbacks ultimately leading to faster and more accurate retrieval result. An experiment has been performed to verify the effectiveness of the proposed model and the result has demonstrated rapid increase in recall and precision while receiving the same number of feedbacks.

• Journal of Digital Convergence
• /
• v.19 no.9
• /
• pp.1-8
• /
• 2021

The purpose of this study is to identify the influence of users' satisfaction with the Automatic Writing Evaluation(AWE) on learners' sense of learning achievement through self efficacy in English writing class. AWE is a tool that automatically provides feedback on writing outputs by AI technology. College students were asked to write essays for each topic and use AWE to get feedback on their drafts, and finally revise them referring to the feedback. A questionnaire survey was conducted for the data collection. The data was analyzed using SPSS, and smart PLS-SEM along with bootstrapping techniques, The results of the study reveal the followings: 1) the convenience and usefulness of AWE had a positive effect on the willingness to reuse it; 2) the satisfaction with AWE had a positive effect on self-efficacy; 3) self-efficacy had a positive effect on learning achievement in terms of emotional and linguistic aspects. With the development of the 4th industry and A.I. technology, it is recommended to introduce new materials or programs such as AWE in English education.

• The Journal of the Korea Contents Association
• /
• v.20 no.1
• /
• pp.573-580
• /
• 2020

The purpose of this study was to explore and to suggest the effective teaching methods for university students to improve their speaking abilities through peer assessment-feedback and self assessment-feedback based presentation and debate class. The objects and content of the study were the students who took a class "Reading and Communication" of H university, and here examine closely the speaking activities and their effects during the integrated activities of 'reading, speaking and writing'. In speaking education peer and self assessment feedback is to form an emotional consensus among the students and encourage active participation, and enable self-discovery and communication learning to students. As a result of the study, it was found that the variety speaking practice had a very positive effect on the attitude of speaking and the psychological aspect, and it was confirmed that the evaluation and feedback activities had a meaningful learning effect on the students. Effective speech education and guidance measures should be continuously studied and developed.

• Journal of Digital Convergence
• /
• v.13 no.9
• /
• pp.361-368
• /
• 2015

This research aimed to investigate the effects of neurofeedback training on unilateral neglect and depression in patients with stroke. Fourteen of the subjects were selected from the experimental group and the control group respectively; the following results were obtained. First, experimental group and the control group presented significant statistical difference before and after intervention on neglect. However, there is after intervention no significant statistical among them. Two, experimental group and the control group presented significant statistical difference before and after intervention on depression, and the experimental group demonstrated more decrease than the control group in depression. The results obtained from this research expect us that applying the neurofeedback training for the improvement of neglect and depression, to stroke patients has a positive effect on the rehabilitation of patients.