• Journal of Broadcast Engineering
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• v.10 no.3
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• pp.422-435
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• 2005

Compared with analog broadcasting, digital broadcasting supports technical background to provide personalize the TV watching environment by offering broadcasting services that can adapt to viewers' preferences. However, current digital broadcasting shows limited services such as reservation recording, simple program guiding with an electronic program guide (EPG) on a personal video recorder system, and primitive data broadcasting by broadcasters. Therefore, the purpose of this paper is to suggest a new broadcasting environment which gives a person facility and a difference fur watching TV by serving enhanced personalized services. For that reason, we propose an intelligent broadcasting system which can minimize viewer's actions, and enhanced broadcasting services which are based on understanding of the semantics of broadcasting contents. To implement the system, agent technology as well as the MPEG-7 and TV-Anytime Forum (TVAF) are employed. For content-level services, real-time content filtering and personalized video skimming are designed and implemented. To verify the usefulness of the proposed system, we demonstrate it with a test-bed on which content-level personalized services are implemented.

• Journal of Intelligence and Information Systems
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• v.21 no.1
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• pp.83-98
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• 2015

Many TV viewers use mainly portal sites in order to retrieve information related to broadcast while watching TV. However retrieving information that people wanted needs a lot of time to retrieve the information because current internet presents too much information which is not required. Consequentially, this process can't satisfy users who want to consume information immediately. Interactive video is being actively investigated to solve this problem. An interactive video provides clickable objects, areas or hotspots to interact with users. When users click object on the interactive video, they can see additional information, related to video, instantly. The following shows the three basic procedures to make an interactive video using interactive video authoring tool: (1) Create an augmented object; (2) Set an object's area and time to be displayed on the video; (3) Set an interactive action which is related to pages or hyperlink; However users who use existing authoring tools such as Popcorn Maker and Zentrick spend a lot of time in step (2). If users use wireWAX then they can save sufficient time to set object's location and time to be displayed because wireWAX uses vision based annotation method. But they need to wait for time to detect and track object. Therefore, it is required to reduce the process time in step (2) using benefits of manual annotation method and vision-based annotation method effectively. This paper proposes a novel annotation method allows annotator to easily annotate based on face area. For proposing new annotation method, this paper presents two steps: pre-processing step and annotation step. The pre-processing is necessary because system detects shots for users who want to find contents of video easily. Pre-processing step is as follow: 1) Extract shots using color histogram based shot boundary detection method from frames of video; 2) Make shot clusters using similarities of shots and aligns as shot sequences; and 3) Detect and track faces from all shots of shot sequence metadata and save into the shot sequence metadata with each shot. After pre-processing, user can annotates object as follow: 1) Annotator selects a shot sequence, and then selects keyframe of shot in the shot sequence; 2) Annotator annotates objects on the relative position of the actor's face on the selected keyframe. Then same objects will be annotated automatically until the end of shot sequence which has detected face area; and 3) User assigns additional information to the annotated object. In addition, this paper designs the feedback model in order to compensate the defects which are wrong aligned shots, wrong detected faces problem and inaccurate location problem might occur after object annotation. Furthermore, users can use interpolation method to interpolate position of objects which is deleted by feedback. After feedback user can save annotated object data to the interactive object metadata. Finally, this paper shows interactive video authoring system implemented for verifying performance of proposed annotation method which uses presented models. In the experiment presents analysis of object annotation time, and user evaluation. First, result of object annotation average time shows our proposed tool is 2 times faster than existing authoring tools for object annotation. Sometimes, annotation time of proposed tool took longer than existing authoring tools, because wrong shots are detected in the pre-processing. The usefulness and convenience of the system were measured through the user evaluation which was aimed at users who have experienced in interactive video authoring system. Recruited 19 experts evaluates of 11 questions which is out of CSUQ(Computer System Usability Questionnaire). CSUQ is designed by IBM for evaluating system. Through the user evaluation, showed that proposed tool is useful for authoring interactive video than about 10% of the other interactive video authoring systems.

• Archives of design research
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• v.19 no.5 s.67
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• pp.373-382
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• 2006

In this study, emotional word logging software,'VideoTAME' was developed as an effective measurement tool for complementing the current psychological measuring methods. With the software, we measured the user's emotional changes while they interact with a product. The main goal of this study is to reveal the influence of usability on human emotions by analyzing the user's emotional changes while using a product. In this research, we asked 30 subjects to examine their emotional changes with watching the video clip recorded when they performed a series of tasks with a cellular phone in the experiment room. The results of this research indicated that negative emotion such as 'Uncomfortalbeness' was elicited mostly while they performed tasks which were difficult due to usability problems. On the other hand, positive emotion such as 'Satisfaction in Usability' was elicited for tasks which were easy to perform because of good usability. The reason for the user's emotional changes while they interact with a product can be assumed that the emotional changes were caused by specific situations they face when performing a task rather than the characteristics of task itself. We expect to clarify how usability of a product impact user's emotions in depth with more data collected and analyzed with the help of 'VideTAME'.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.29-42
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• 2020

The purpose of this study is to present a qualitative research method for extracting and analyzing the comments written by YouTube video users. To do this, we used YouTube users' feedback to measure the hedonic, social, and utilitarian gratification of use and gratification theory(UGT) through by using analysis and topic modeling. The result of the measurement found that the first reason why users watch the trot singer, Cho Myung-sub's video in the KBS Korean broadcasting channel is to achieve hedonic gratification with high frequency. In word-document network analysis, the degree of centrality was high in words, such as 'cheering', 'thank you', 'fighting', and 'best'. Betweenness centrality is similar to the degree of centrality. Eigenvector centrality also shows that words such as 'love', 'heart', and 'thank you' are the most influential words of users' opinions. The results of the centrality analysis present that the majority of video users show their 'love', 'heart' and 'thank you' for the video. it indicates that the high words in centrality analysis is consistent with the high frequency words of hedonic and social gratification dimension of the UGT. The study has research methodological implication that shed light on the motivations for watching YouTube videos with UGT using text mining techniques that automate qualitative analysis, rather than following a survey-based structural equation model.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.171-187
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• 2018

The purpose of this study is to investigate the lifestyle factors influencing behavioral problems such as Inattention, hyperactivity/impulsivity, and internet overuse in elementary and middle school students. Data from 889 elementary school students and 676 middle school students were used and teacher reporting on students' attention deficit and hyperactivity and impulsivity symptoms was also included in the analysis. Lifestyle included opportunities for family interaction, sleep, watching TV, playing Video games, eating breakfast, eating junk food, and private education. As a result of stepwise regression analysis, Video games, junk foods, and family interactions significantly predicted the inattention of elementary and middle school students. Video games, TV, junk foods, and family interactions significantly predicted elementary school students' hyperactivity and impulsivity, but the lifestyle variables hardly accounted for the hyperactivity/impulsivity of middle school students. Video game, and family interactions significantly predicted Internet overuse for both elementary and middle school students. Current study suggest that family interaction opportunities and the use of video games, TV and junk food should be considered to intervene in behavior problems.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.48 no.6
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• pp.77-87
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• 2011

In this paper, we propose a disparity correction technique to reduce the inherent visual discomfort while watching stereoscopic videos. The visual discomfort must be solved for commercial 3D display systems to provide natural stereoscopic videos to human eyes. The proposed disparity correction technique consists of horizontal and vertical disparity corrections. The horizontal disparity correction is implemented by controlling the depth budget of stereoscopic video using the geometric relations of a stereoscopic camera system. In addition, the vertical disparity correction is implemented by using a feature-based stereo matching algorithm. Conventional vertical disparity corrections have been done by only using camera calibration parameters, which still cause systematic errors in vertical disparities. In this paper, we minimize the vertical disparity as small as possible by using a feature-based correction algorithm. Through the comparisons of conventional feature-based correction algorithms, we analyze the performance of the proposed technique.

• Journal of the Korean Society of Clothing and Textiles
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• v.16 no.1 s.41
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• pp.85-96
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• 1992

The puropse of this study is to find out that whether the juvenile delinquency could be decreased by the revival of school uniform for the high school students. For this purpose, the difference and frequency of juvenile delinquency between uniformed students and none·uniformed students were surveyed. In addition, the relation among the students, social classes, receiving attitude for the sub-culture, with juvenile delinquency were also surveyed. For this study, 728 high school students were' studied with a questionaire. They were 328 ' uniformed students from 6 schools and 400 none-uniformed students from other 6 schools. The conclusions of this study are as follow: 1. The order of juvenile delinquency is resistance to their parents and teachers, cunning in examination, drinking, watching shameful video tapes, possession of dirty books and pictures, gambling, entering to thea rooms, billiard rooms, the prohibited cinema houses aild drinking houses, and smoking. The students' delinquency was chiefly misdeed against the public order and social position and most of them were without any victims. And there were no misdeed such as drug addiction, robbrry and bodily harm. 2. The difference of juvenile delinquency between uniformed and non·uniformed schools was not found. 3. More nisdeed were occurred when they were without uniform; especially in cases of entering to shameful video shops, drinking houses, tea rooms and billiard rooms. 4.The logical propriety that the juvenile delinquency would be decreased by putting on uniform to all students is scarce, because Ell misdeed were occurred when they were without uniform after school. Uniform were worn only when they go to school. 5. A negative effect between student's affection toward their parents and schools, and juvenile deliquency was found. Much they love their parents and schools, less misdeed occurred. 6. Positive effect between sub·culture and juvenile delinquency was found. The friendship with delinquent students gives a great influence to juvenile delinquency.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.687-689
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• 2018

The current EEG device can determine the concentration, but can not determine the concentration of the state. Therefore, we distinguish attitude based on Mindwave Attention data and additionally Pitch data to distinguish whether or not we are looking at a video object, and suggest a method to obtain better performance. Attention data were measured in the state where the images were viewed and concentrated. In the case of the Pitch data, Sit was measured when sitting on a desk and Lie when lying down. Attention value was 38 or more. When the value of the Pitch is smaller than -48, it is judged that it is in a prone state. When the concentration and sitting state were satisfied with this threshold value, it was judged that they focused on watching the actual video.

• Journal of The Korean Association For Science Education
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• v.16 no.2
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• pp.154-163
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• 1996

In Korea, previous survey in science education mainly dealt with Quantitative variables. Qualitative ethnographic observation can bring deeper understanding of the context of school lesson and it's feature. The purpose of this study was to develop qualitative understanding about the learning experiences provided in middle school and students' responses to them through observation and interview and to investigate it from a constructivist perspective. Six lessons of the 9th grade were observed and recorded on the video tape. The topics of the lessons were potential energy, kinetic energy and conservation of mechanical energy. We had also unstructured interview with the teacher and three groups of students. The teacher's deductive explanation starting from scientific definition and quantitative problem solving using formula were the main features of the classroom lectures. The video - watching lesson was taking the role of a break rather than being seen as a useful tool for science learning and teaching by both students and the teacher. The teacher's perception about the lab experiment was not supported by the responses from the students. The teacher and students preferred problem-book to textbook for their teaching and learning. From a constructivist's perspective, however the teacher seemed to have intention of introducing daily life context, he couldn't unfold it to main context of the lessons. Students were so accustomed to passive learning that they did not express directly their complaint about their learning and did not participate in planing and controling their learning. The teacher and the students believed the scientific knowledge came from an exact experiment. There was a cooperation to seek right answer rather than a social process of making sense of knowledge. In conclusion, the observed science lessons of a middle school showed typical cross section of teacher - centered, passive learning environment, which is far from constructivist perspective.

• Women's Health Nursing
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• v.17 no.4
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• pp.395-406
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• 2011

Purpose: This study was done to identify factors that affect sexual permissiveness in college students. Methods: A descriptive design was used with 380 college students who completed a questionnaire about self-esteem, parents-adolescent communication, friend's sexual attitude and sexual permissiveness. Results: The sexual permissiveness showed significant differences for the variable: grade (F=0.51, p=.002), gender (t=7.28, p<.001), age (F=14.72, p<.001), religion (t=4.97, p<.001), residence type (F=4.75, p=.009), number of call with parents (F=3.56, p=.030), number of viewing pornographic video (F=36.05, p<.001), number of viewing pornographic magazine (F= 47.90, p<.001), status of dating (t=3.62, p<.001), number of sexual intercourse (F=14.51, p<.001), and experience of sexual intercourse (t=13.00, p<.001). There was a positive correlation between the friend's sexual attitude and sexual permissiveness (r=.64, p<.001). The variables such as friend's sexual attitude, experience of sexual intercourse, the number of watching pornographic video, educational system, religion, and the number of calls with parent explained 52% of the variance in sexual permissiveness. Conclusion: The results of this study indicate that it is necessary to develop sexual education program for college students considering their level of sexual permissiveness and their friend's sexual attitude.