• Science of Emotion and Sensibility
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• v.12 no.3
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• pp.279-288
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• 2009

The purpose of this study was to verify the impact of cognitive factors and GSR on the task performance. For this study 64 students participated. Multiple regression and repeated measures were applied to analyze the data. The result for the survey indicated that previous knowledge, physical efforts, and task difficulty had significant impacts on task performance. Particularly, task difficulty has a negative impact. This can be interpreted as someone who has high prior knowledge inputs higher physical efforts with low task difficulty perception will show high performance. On the other hand, the low arousal level of GSR in the evaluation stage is a prediction variable of task performance. This result shows that high prior knowledge and low arousal level of GSR produces high performance. However, the analysis of difference in GSR between learning and evaluation stages does not show significant difference. It suggests that physiological measure such as GSR is reliable index of cognitive load; however, it partially represents cognitive load. Other crucial factors should be added for comprehensive measures.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.9
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• pp.4054-4060
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• 2011

The purpose of this study was to investigate the effects of coach confidence on member satisfaction and perceived performance in throwers. The participants were 198 throwers who were competed in the 40th National Athletics Championship. To analyze the data, multiple regression was performed using SPSS 18.0 ver Windows. The results showed that coach confidence of throwers affected significantly on the athlete satisfaction(p<0.05). In other words, the subfactor of coach confidence such as integrity, ability, consistency, sacrifice, and openness affected the subfactor of player satisfaction such as technical analysis, teaching ability, and coaching qualification. And also, coach confidence of throwers affected significantly on the perceived performance(p<0.05). The subfactor of coach confidence such as integrity, ability, consistency, sacrifice, and openness affected the subfactor of player satisfaction such as victory will and skill exhibition. It was concluded that the coach confidence of throwers may affect player satisfaction and perceived performance.

• Korean Journal of Poultry Science
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• v.15 no.3
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• pp.247-251
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• 1988

This experiment was carried out to investigate comparison of total cholesterol, lipid and fatty acid composition of breast and thigh from female and male broiler meats. Total lipid and neutral lipid content of female and male broiler breast meats were lower, but phospholipid and glycolipid contents were highter than thigh meats. Unsaturated fatty acid composition of broiler thigh meats were higher than breast meats on neutral and phospholipid, but breast meat was higher than thigh meat on glycolipid. Glycolipid content in total lipid was lower in female than male broiler meat. Contents of palmitic acid in neutral lipid, palmitic stearic linolenic arachidic and arachidonic acid in phospholipid, palmitic and stearic acid in glycolipid were higher than male broiler meat. The highest content of total cholesterol in defatted tissue was thigh tissue of male and undefatted thigh tissue of female.

• Journal of the HCI Society of Korea
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• v.14 no.2
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• pp.31-39
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• 2019

This research examined the changes that fast-growing voice-based devices would bring in the media multitasking environment. Based on the theoretical background that information processing efficiency improves when performing multiple tasks requiring different resource structures at the same time, we conducted an experiment where participants searched for information with voice-based or screen-based devices while performing an additional visual task. Results showed that both task performance environment and interface modality had significant main effects on cognitive load. The overall cognitive load level was higher in the voice interface group, but the difference in cognitive load between the two groups decreased in a multitasking environment where the additional visual resources was required. The visual task performance was significantly higher when using the voice interface than the screen interface. Our findings suggest that voice interfaces offered advantages in the cognitive load and task performance by distributing two tasks to the auditory and visual channels. The results of this study imply that voice-based devices have the potential to facilitate efficient information processing in the screen-centric environment where visual resources collide. We provided theoretical evidence of resource distribution using multiple resource theory and tried to identify the advantages of the voice interface more specifically based on the threaded cognition model.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2000.05a
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• pp.164-170
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• 2000

본 논문은 과거 많은 학자들에 의해 제기된 주구조와 부구조, 하위구조 등의 담화 내 계층적 구조에 대한 증거로 일탈을 중심으로 부구조를 분석하였다. 먼저 주제 일탈의 구조와 정의에 관해 분석하고 중단과 화제 전환 등과의 차이를 설명하였다. 지식 표현 언어인 Sowa의 개념구조론의 체계 내에서 담화의 계층적 구조와 그 구조를 나타내는 언어적 표시인 담화 표지의 예를 기술하는 방법을 제시한다. 개념 관계로 일탈, 화제 전환, 틀의 관계를 설정하여 담화 내 계층구조와 담화 부분과의 화용적인 관계를 규명하였다. 기존의 개념구조론은 선택적 제약, 조응 등의 의미론적인 개념들을 간결하고 정확하게 기술할 수 있었는데 화용론적인 측면의 기술도 가능함을 보여준다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.635-637
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• 2003

복잡한 소프트웨어가 필요한 응용분야에 기존에 보유하고 있는 컴퓨팅 자원을 사용하여 구축될 수 있는 클러스터 시스템을 적용할 수 있다. 하지만 제공되는 서비스의 질을 예측하여 가용성과 성능 요구사항을 만족하기 위한 QoS 인지 클러스터 시스템 구조에 관한 연구가 필요하다. 따라서 본 논문에서는 차별화 된 서비스 제공과 의존도 요구사항을 만족하기 위해 다양한 메커니즘을 장착한 클러스터 시스템 구조를 도출하고 실제 상용 서비스를 제공하는 웹 서버의 로그 분석을 통한 작업 부하 모델링을 수행하여 얻은 시스템 운영 조건에 대한 성능 분석 실험을 수행하였다.

• Management & Information Systems Review
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• v.31 no.2
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• pp.89-114
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• 2012

The purposes of this research are to examine the effect of humor sense of leader on innovative behavior and to examine the moderating effects of empowerment on the relationship between humor sense of leader and innovative behavior. For these purposes, literature review and survey research were conducted. The 350 questionnaires were sent to the 10 manufactural firms in the Pusan and Kyungsang Nam-Do region for empirical analysis. Total 276 usable responses were collected(effective response rate : 78.86%). The major findings of the empirical research are as follows ; First, generation of humor, use of humor, attitude of humor and evaluation of humor which are composed factors of humor sense of leader have positive influence innovative behavior. Second, composed factors of humor sense of leader have differential influence on innovative behavior by empowerment. In conclusion, humor sense of leader is expected to improve innovative behavior which is individual behavior in an organization. Therefore, managers have to develop innovative behavior by exhibiting humor sense, considering empowerment.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.11
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• pp.1374-1379
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• 2016

In almost all schemes of cooperative cognitive radio networks (CCRN), the users transmit and receive signals in half-duplex mode. In this paper, a design of CCRN adopting the full-duplex (FD) technique is addressed. In order to enable FD communication among users in the CCRN, simultaneous transmitting and receiving antennas are employed for the secondary users. Preliminary results from analysis and numerical evaluation indicate that the proposed FD multiple-input-multiple-output CCRN framework can provide a performance gain over the conventional CCRN frameworks.

• The Journal of Korean Association of Computer Education
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• v.15 no.1
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• pp.55-64
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• 2012

The purpose of this study is to identify how realism of pedagogical agent can have impacts on persona effect and cognitive load factors. Eighty-two college students participated, and the independent variables of this study were the degree of image details and presence of gesture. The degree of image details were picture, illustration, and line-drawing. The $3{\times}2$ factorial design was applied. There was a significant interaction effect on the engaging of agent persona instrument. When the learners were under the condition of line-drawing agent without gesture, they showed the highest score on engaging of the agent persona instrument. Regarding the cognitive load factors, when learners under the condition of line-drawing showed the highest score of self-evaluation.

• Journal of The Korean Association For Science Education
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• v.19 no.4
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• pp.684-695
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• 1999

In this study, the 'extended science investigation' was conceptualized as a comprehensive science investigation contrasted with exercise of process and skill component and cookbook style experiment. The extended investigation tasks can be characterized with practical context. openness and continuity. The purpose of this study is to describe the change of students' cognitive engagement while they perform the extended science investigations and to explore how the characteristics of the extended investigation tasks affect the students' cognitive engagement. 128 7th graders attending coeducational school in Seoul were participated in this study. The questionnaire was implemented repeatedly to monitor students' cognitive engagement. And ten students were interviewed to explore the cause of the change of cognitive engagement. The result showed that there was no difference between directive traditional investigations in textbook and developed extended investigations in understanding of the content and whole process of investigations but participants' commitment was increased significantly in the extended science investigations. Especially the extent of students' understanding and commitment became higher in the second half than in the first half of the extended science investigations. The openness of the extended investigation tasks contributed on the increase of commitment. And the continuity of the tasks contributed on the increase of students' understanding in the second half of the extended science investigations.