• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.12
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• pp.1280-1288
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• 2014

In this paper, we use the ECMA-392 standard, the first cognitive radio networks to meet the demand for IT services in the ship. First, we learn about ECMA-392-based network and examine the consideration and the problems for assigning channels to the device. And, we propose a fair channel resource allocation to ensure efficiently channel required by device groups in ECMA-392 MAC protocol. This is a method to reallocate the channels fairly with considering the channel assignment parameters to a new device group and existing device groups. The simulation results show that the proposed scheme improves throughputs compared to the existing one.

• Korean Journal of Health Education and Promotion
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• v.32 no.2
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• pp.75-84
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• 2015

Objectives: This study examines that the compatibilities between the health promotion programs in community health center and the leading health indicators in National Health Plan. Methods: We analyzed health promotion programs associated with three health indicators; smoking(smoking rate in male), alcohol use(alcohol use rate in adults), obesity(obesity rate) in twenty five community health centers in Seoul. First, we classified three groups(excellent, fair and poor groups) using average scores of Seoul, that of Korea and National Health Plan2010 goals in three health indicators. Afterwards, we examined the compatibility between contents of health promotion programs regarding leading health indicators and the specific program activities. Results: The compatibility levels between health indicators and contents of health promotion programs was 80 % for smoking among fair and poor groups while fair and poor for smoking reported 60% and 70%, respectively. For obesity, excellent group reported 80% and fair group had 91%. Conclusion: In conclusion, although all districts were able to access available data for health indicators and health statistics every year, it seems that they did not only utilize these data enough in conjunction with health promotion programs but also did not integrate specific activities according to National Health Plan systematically.

• Journal of The Korean Association For Science Education
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• v.15 no.2
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• pp.158-163
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• 1995

The 40th Annual Southern Arizona Regional Science and Engineering Fair was analyzed in terms of contents of exhibits and research methods. Elementary school students like to choose first, biology; secondly. physics; thirdly, chemistry; fourthly. consumer science; fifthly, S.T.S; sixthly. earth science area topics. Chemistry area topics are 20 %, which are much more than rates appeared in American elementary science textbooks. Elementary school students like topics such as pollutions, energy saving materials and characteristics/selection of products required in every-day life. In the most preferential area, biology, students do experiments or survey about plants growth, microbiology, learning/behavior of animals, health/exercise, which are reconcile with the analysis of American elementary science contents.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.321-322
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• 2010

• Journal of Animal Environmental Science
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• v.19 no.2
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• pp.169-176
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• 2013

This survey was conducted to investigate the present conditions of operational management in the 45 animal manure public resource center (APRC) in Korea. The regional distribution, processing capacity per year, capacity of liquid fertilizer storage tank, solid-liquid separation, utilization of facilities, odor reduction facility, on-site odor strength, complained in the community, liquid fertilizer sprayed area, use the Agrix, land application recipe, composting degree, quality management and general grading were surveyed and evaluated. General grading was divided with 5 stages (very good, good, fair, lack and bad). The number of evaluated "very good" animal manure public resource center was 7, and "good" was 5 and more than "fair" was 27. However, the number of evaluated negatively including "lack" and "bad" was occupied as 40% of the 45 animal manure public resource center.

• Journal of the Korea Furniture Society
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• v.22 no.1
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• pp.26-33
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• 2011

This study aims at suggesting a creative way of activating KOFURN (Korea Furniture) fair by analyzing its problem in studying its marketing strategy. The proposition is limited to the analysis of the matter for the strategy based on KOFURN's status in 2010 with its history. Through the related references and documents, the interview with the related people in KFFIC (Korea Federation of Furniture Industry Cooperatives) that has held the KOFURN fair since 2002, and its viewing in 2010, the materials were collected. As a result, first, there is no effectiveness following participating the fair; second, its public relations on the internet is not enough; third, the furniture-related firms don't make sure that KFFIC is able to do a good job for them; lastly, the companies, KFFIC, and consumers require better communication. Therefore, in order to resolve the four matters, first, the publicity on the internet needs to supplement creative ways of making KOFURN attract a lot of people. Second, KFFIC hosting KOFURN fair needs to offer an opportunity for the visitors to participate and experience a variety of events prepared by itself. Finally, KFFIC has necessity of building its better reliance which is able to lead the furniture-related firms by planning and carrying out various businesses with them.

• Science of Emotion and Sensibility
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• v.27 no.3
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• pp.27-36
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• 2024

This study aimed to determine how 15 weeks of Tai Chi training affected attention and brain waves. Thirty-six university students (mean age = 24.27 years; SD = ±1.054) participated in this experiment. Participants practiced form postures from the first section of form 85 of the traditional Yang style of Tai Chi Chuan. The Frankfurt Attention Inventory (FAIR) was used to assess each participant's level of attention. The sensorimotor rhythm (SMR) power analysis demonstrated that participants in the Tai Chi group show higher SMR power than the control group. This study showed that Tai Chi Chuan increases theta and alpha waves by relaxing the body and mind, as well as through soft and slow movement and deep breathing. It reduces fast beta waves, which stabilizes the brain and improves attention. FAIR results showed that 15 weeks of Tai Chi training improved selective ability, control index, and persistence index. These findings suggested that Tai Chi is an exercise that helps improve attention.

• Journal of Korean Elementary Science Education
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• v.20 no.1
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• pp.59-73
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• 2001

The National Science Fairs has been held in every year for the promotion of science and technology and scientific civil life. The purpose of this study is to survey the current problems in National Science Fairs by making up a question and to improve them. The study makes up a questionnaires about the existing Science Fairs to the teachers who have submitted their works to the Science Fairs and suggest the ways of improvement. The result of questionnaires is that little availability of reference materials, difficulty of paying proper attention to regular classes because of frequent travels, and absence of experimental devices and experimental rooms are perceived as major obstacles in preparing for the exhibition. Respondents teacher also pointed out some problems with the current organization of the exhibition; non-voluntary selection process for the potential authors, separation of research content from regular teaching materials, unrealistically high standard, low participation rate of teachers, so many exhibited works, lack of professionalism in the screening process. The majority however, agreed that the exhibition event should be continuously done, after remedial measures have been taken about the problems. First, the side of science education is emphasized in a purpose of the science fairs to let activity related to science fair be closely connected with school education. Second, students have to be divided according to grade. Third, research level have to be set not too higher than regular instruction content. Fourth, hand book related to science fairs have to be manufactured and spread. Fifth, data of local science fair have to be arranged. Sixth, judging section have to be subdivided and people related to science education have to be included to a judge. Seventh, excellent works have to be support to participate in ISEF.

• Asian Journal of Innovation and Policy
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• v.9 no.3
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• pp.339-359
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• 2020

The policy change in the Data 3 Act is one of the issues that should be noted at a time when non-face-to-face business strategies become important after COVID-19. The Data 3 Act was implemented in South Korea on August 5, 2020, calling 'Big Data 3 Act' and 'Data Economy 3 Act,' and so personal information that was not able to identify a particular individual could be utilized without the consent of the individual. With the implementation of the Data 3 Act, it is possible to establish a fair economic ecosystem by ensuring fair access to data and various uses. In this paper, the law on the protection of personal information, which is the core of the Data 3 Act, was compared around Korea, the European Union and the United States, and the implications were derived through network analysis of keywords.

• Journal of Korean Society of Forest Science
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• v.109 no.2
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• pp.243-247
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• 2020

This study investigates bench grafting (BG) and field grafting (FG) in walnut by comparing the graft take rate, grade ratio, and simple earning rate using a conventional method. The mean grafting-take rate of the BG was 30.3% while that of FG was 77.1%. The quality of grafted seedlings is classified as good, fair, and poor. The quality grade ratio of FG seedlings is 3:4:3 (good:fair:poor) while the grade ratio of BG seedlings is 2:3:5. Field grafting resulted in 20% more good and fair seedlings than the BG method. As a result of calculating the earning rate with the sales income versus the input cost, FG has 1.5 times higher earning rate than BG. In summary, FG could be an alternative to conventional epicotyl grafting because it produced high-quality seedlings and increased productivity due to its high graft-take rate and earning rate.