• Journal of the Korea Academia-Industrial cooperation Society
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• v.3 no.4
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• pp.274-279
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• 2002

ATM packet switching technologies for the purpose of the B-ISDN service are focused on high performance which represents good qualities on throughput, packet loss, and packet delay. ATM switch designs on a class of parallel interconnection network have been researched. But these are based on the self-routing function of it. It leads to conflict with each other, and to lose the packets. Therefore, this paper proposes the method based on Sort-Banyan network should be adopted for optimal routing algorithm. It is difficult to expect good hardware complexity. For good performance, a switch design based on the development of new routing algorithm is required. For the design of switch network, the packet distributor and multiplane are proposed. They prevent each packet from blocking as being transmitted selectively by two step distributed decision algorithm. This switch will be proved to be a good performance switch network that internal blocking caused from self-routing function is removed. Also, it is expected to minimize the packet loss and decrease the packet delay according to packet transmission.

• Journal of Korean Medical classics
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• v.23 no.5
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• pp.35-50
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• 2010

By grouping freshly the virtue terms used in herbal medicine, we are apt to establish the position coordinates of concepts and raise the level of the herbal virtue research in future. As the terms related to the herbal virtue used in herbal medicine are used with the virtue terms mingled with the chief treatable disease terms, it's hard to use the herbal virtue data only. And though the virtues terms imply many data like medical act data or medical operation data, we can't use them fully. We sort the terms related to the herbal virtue into the virtue terms and the chief treatable disease terms and acquire many data like medical act data or medical operation data and group the data by same attribute. At this time in the process of classification we establish sort standards inductively, put relations between the attributes in order, out of this result we grasp the actual conditions of the virtue terms used now, and show useful data for herbal virtue research in future. We got the chief treatable disease terms from the ones related to the herbal virtue, acquired a lot of data from the virtue terms and grouped the data by the same attribute. We established a proper standard inductively in the process of classification, put the relations between the attributes in order, grasped the actual conditions of the virtue terms in use at the moment out of the result of the classification and presented the applicable data for the herbal virtue research in future.

• Journal of The Korean Association of Information Education
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• v.24 no.3
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• pp.225-232
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• 2020

This study is to clarify how college students think about quality computer classes. Q methodology is applied to extract the subjective thinking of college students. After extracting the statements through students' interviews and advanced study, the 54 Q samples were selected. The P sample consisted of 50 college students. They performed Q sort against the Q sample questionnaire. The Q sort results were analyzed by performing QUANL program. As a result of the analysis, four types of perceptions of quality computer classes based on college students' ideas were extracted. There were no differences between male and female students, but there was a clear difference between general college and teacher's college students by type. The types were divided into four categories which we named as follows: is 'Value change-oriented class through creative problem-solving', is 'Improving computer application skills through the learner's competition', is 'Improving advanced computer technology with programming skills' and is 'Learner centered pleasant class'.

• Journal of Dental Rehabilitation and Applied Science
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• v.23 no.3
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• pp.205-218
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• 2007

Statement of problem, and purpose: This study was performed to make good foundations for better development of mouth guards by surveying, analyzing and finding the understanding or opinions of athletes on mouth guards. Material and Methods: 617 sports players comprised the data base of the Survey, 230 contact sports, 387 non-contact sports. We surveyed and analyzed by asking following questions for athletes. 1. The sort of sports in which the player is majoring. 2. How long the players career is. 3. Whether the player has received prize or not. 4. The condition of stomatognathic system. 5. His or her eating habits. Results and conclusion: 1. Inconveniences should be minimized in wearing mouth guards. 2. The differential designs are thought to be needed for different sort of sports and for frequently affected regions 3. The changes in acknowledgment of athletes in mouth guards is necessary, that is mouth guard is very important & essential to prevent or minimize the traumatic damages. 4. Keeping in intimate and close contact with related athletic associations and putting athletes under the obligation to wear it for themselves, should be required.

• Journal of The Korean Association of Information Education
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• v.16 no.2
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• pp.255-263
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• 2012

Early algorithm education is very important in order to nurture excellent S/W developers in an information society. However a algorithm learning is a great challenge to elementary school students since understanding what a computer algorithm written in a static text format meant to do is difficult. It is expected that a student can easily visualize a algorithm through animations. In this study, we evaluate the pedagogical effectiveness of algorithm visualizations in teaching the fundamental data structures and algorithms in elementary schools. Thus we defined a new measure called 'Algorithm Visualization Factor(AVF)' and developed both text-oriented and animation-oriented PPTs of algorithm education elements, that is, Stack, Queue, Bubble Sort, Heap Sort, BDF, and DFS. We have conducted experiments and evaluations on diverse students groups. Extensive experiment results show that the average score of the student groups using animation-orirented PPT is greater(22%) than the one of the student groups using text-orirented PPT.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.399-410
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• 2019

The purpose of this study was to find out the types and characteristics of 'good camping' on the base of camping participant's recognition with Q-methodology. The subjects were selected 15 Q population and did 1:1 interview on them. With those statements, this study was selected 45 P samples and performs Q sort with them. The Q sort result was analyzed by using QUANL program. The results of this study, First, the characteristics of company·break type can be defined with comfort break in nature and the companion except family. Second, family activity type can be defined with the various activities with family. Third, nature·activity can be defined with free hobby activities in nature.

• Journal of Dental Rehabilitation and Applied Science
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• v.23 no.2
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• pp.105-117
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• 2007

Statement of problem,and purpose: This study was performed to make good foundations for better development of mouth guards by surveying, analyzing and finding the understanding or opinions of athletes on mouth guards. Material and Methods: 617 sports players comprised the data base of the Survey, 230 contact sports, 387 non-contact sports. We surveyed and analyzed by asking following questions for athletes. 1. The sort of sports in which the player is majoring. 2. How long the players career is. 3. Whether the player has received prize or not. 4. The condition of stomatognathic system. 5. His or her eating habits. Results and conclusion: 1. Inconveniences should be minimized in wearing mouth guards. 2. The differential designs are thought to be needed for different sort of sports and for frequently affected regions 3. The changes in acknowledgment of athletes in mouth guards is necessary, that is mouth guard is very important & essential to prevent or minimize the traumatic damages. 4. Keeping in intimate and close contact with related athletic associations and putting athletes under the obligation to wear it for themselves, should be required.

• Journal of the Korean Society of Clothing and Textiles
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• v.39 no.3
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• pp.468-475
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• 2015

This study has examined the 20's and the 30's Korean who have a desire, 'to be getting younger' and how to relate what appearance management-behavior they follow. The methodology of this study used both theoretical and quantitative research for an empirical study. First, a theoretical study researched a big stream of the 20's and the 30's Koreans' to be getting younger' on articles based on the social and cultural background of the past 30 years that defined various concepts of age through previous research. Data was also collected via SMS for five months (August to December 2014) and 96 Korean participants in their 20's and the 30's who have lived in and around Seoul. The results of the survey analysis showed that the desire of 'to be getting younger' irrelevant to the age among Korean young people. In addition, this tendency to be the ideal age as being younger is realized by appearance management sort of skin care or clothing styling among 20's and the 30's Korean. This study suggested a phenomenon, 'to be getting younger' in Korean society would lead to an alternative sort of age that targets individual taste rather than the chronological age in the apparel market.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.1B
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• pp.60-70
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• 2011

IPTV was introduced as the new growth engine of the broadcasting and telecommunications industry and has experienced a high growth rate as its subscribers exceeded 2 million in early 2010. However there have been some doubts on if the IPTV market will keep current growth drift. One of such suspicions is that IPTV market has not been developed by the competitiveness of IPTV industry itself. In addition, the recent slowdown of subscribers' growth and IPTV players' operating at a loss has been suggested as obstacles to the IPTV market growth. This sort of phenomenon has been brought about by ambiguous proposition of IPTV's own value as well as IPTV service positioning gap. To resolve these problems this study empirically investigates what customers want to get from IPTV service by analyzing switching value of IPTV subscribers. This study also identifies which values must be strategically considered to develop next generation IPTV services, in particular mobile IPTV services. Following the investigation, this study analyzes the possible positioning gap of mobile IPTV. Through this analysis, this study suggests which sort of service values need to be reconciled.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.92-101
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• 2019

This study used the Q-method to derive the structure of subjective opinions and perceptions of university students about the behavior of food delivery agency service provided by staff not directly employed in restaurants. For this purpose, the Q factor analysis was performed using the PC QUANL program for the Q-sort, which consists of a statement card, a P-sample, and a classification process. The results were classified into three types. The factor names were set as the first type (N = 7): efficiency seeking type, the second type (N = 19): benefit seeking type, and the third type [(N = 6): cost-effectiveness seeking type. The characteristics of each type are Type 1:Types that recognize aspects that are efficient for both consumers and restaurants, Type 2: Types of recognizing aspects of being benefited from speed, convenience and benefit, Type 3: Although it contributes to labor cost savings, it appears to recognize price and quality aspects in the initial market, which is burdened by consumers. The purpose of this study is to derive the problems of food delivery agency service business according to the three types and to provide strategic implications for the development direction and improvement plan.