• Korean Journal of Microbiology
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• v.7 no.1
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• pp.10-21
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• 1969

The effect of glucose and 2-thiobarbituric acid on the biosynthesis of cell constituents such as protein, carbohydrate, DNA, RNA, phospholipid and PCA-soluble phosphate compounds in Chlorella duing the life cycle was measured, and the changes in the content of these main cellular components of the algal cell were analyzed in connection with the nuclear and cytoplasmic divison. In the normal autotrophic synchronous culture the contents of protein, RNA, and DNA in the cell showed a chracteristic changes according to the progress of cell development, increasing more or less throughout all the life cycle. The synthesis of protein is more prominent in the division period nad that of DNA is more active in the ripening period, while the synthesis of RNA is more rapid in the growing and ripening periods than other developmental stages. The period of division cycle was little affected by glucose in the medium, although the synchrony of the growth and cellular division was disturbed and the n value increased. The cotents of protein, carbohydrate, RNA nad DNA of the cell were increased by the glucose treatment throughout all the life cycle. On the other hand, both of cellular growth and division were retarded severely and the n value was decreased by the 2-thiobarbituric acid treatment throughout all the life cycle. On the other hand, both of cellular growth and division were retarded severely and the n value was decreased by the 2-thiobarbituric acid treatment. The synthesis of protein, carbohydrate, DNA, RNA and phospholipid of the cell was also retarded by 2-thiobarbituric acid. In the autotrophic, mixotrophic and 2-thiobarbituric acid-treated cultures, each having different mode cytoplasmic division, a common general schema occurring in the cell during the life cycle may be drawn as follows. The ratio of RNA to protein attains maximum value in the $L_1$-cell stage prior to the nuclear division and thereafter decreases during the periods of ripening and division. The ratio of PCA-soluble phosphate compounds to protein increased from the begining of the culture to $L_4$-cell stage successively and thereafter decreased gradually during the division period, while the ratio of protein to DNA kept almost constant up to the division period and thereafter increased during the division period. Therefore, it is presumed that the increase in the ratio of RNA to protein is to be an inducer of nuclear division and that the cytoplasmic division is induced by the increase in the ratio of protein to DNA.

• Journal of Information Technology Applications and Management
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• v.20 no.3
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• pp.79-92
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• 2013

Word-of-mouths (WOMs) are now an important information source for purchase decision. Due to the advance in internet technology, people now can share online their consumption experience, both positive and negative, to others. The WOMs may diffuse to not only their friends but also enormous online users. When consumers dissatisfy the product or service, they may share the dissatisfactory experience to others as WOM, which may bring out discussions for the product or service. The discussions on the negative WOM may help to communicate the negative information to enormous others, which may damage the sale of the product or service. The diffusion and life cycle of negative WOM is an important issue for managers. However, few studies focus on it. Thus, the current study focuses on the discussion pattern and life cycle of negative WOMs by observing the 782 discussion articles in a large online community.

• Korean Journal of Human Ecology
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• v.13 no.3
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• pp.425-440
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• 2004

This study was conducted to provide a foundation for housewife-consumer education programs appropriate in the information society. For this purpose, the authors reviewed existing literature, analysed consumer counseling cases, and conducted focus group interviews. The need for housewife-consumer education was illustrated, and desirable educational contents and methods were proposed. The existing housewife-consumer education programs did not work effectively because the contents were too general, and mostly structured with non-interactive one-way lectures. More effective programs should be designed to accomodate the educational purpose and contents which fitted with the specific needs of housewives as the representatives of the family consumer units. It should also take the family life cycle stages into consideration. The education programs would work better when they were oriented more toward actively participating, locally-based spontaneous small-groups.

• Journal of Korean Home Economics Education Association
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• v.20 no.2
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• pp.31-46
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• 2008

The purpose of this study is to analyze the contents of elderly housing in the unit "Family Life & Housing" in Technology & Home Economics 9th grade textbooks. The results of this study are as follows: First, the contents, illustrations, pictures, floor-plans, graphs and tables in current unit "Family Life & Housing" varied widely among textbooks and some didn't even contain these informations. Illustrations and pictures which are suit to the content and which contain positive image of space and living should be chosen. Second, most of the contents about elderly housing were concentrated on the life cycle, three-generation housing and universal design, discussed in chapter 'utility of living space.' The unification of overlapped contents and description which don't have stereotype about elderly housing are needed. Not only the interior environment but also the exterior environment of the elders and life-support service for them should be included in the contents. Contents that reflect the change of future population composition and the ratio of three-generation household are required. The elderly housing floor plan needs to be diversified in quantity such as ones which reflect the Korean characteristics or ones which enable person an independent life.

• Journal of Microbiology and Biotechnology
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• v.12 no.6
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• pp.943-949
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• 2002

It has been proposed that chitin synthase 3 (CHS3)-nediated chitin synthesis during the vegetative cell cycle is regulated by chitin synthase 4 (CHS4) of Saccharomyces cerevisiae. To investigate direct protein-protein interaction between the coding products of these two genes, a domain of Chs3p that is responsible for interaction with Chs4p was identified, using the yeast two-hybrid system. This domain of 54 amino acids, termed MIRC3-4 (Maximum Interacting Region of Chs3p with Chs4p), is well conserved among CHS3 homologs of various fungi. Some mutations in MIRC3-4 resulted in a decrease in the enzymatic activity and chitin contents. Chs3p carrying those mutations exhibited weak interactions with Chs4p, when assayed by the yeast two-hybrid system. Surprisingly, all the mutants were sensitive to Calcofluor regardless of changes in enzymatic activities or chitin contents. This report deals with a core region in MIRC3-4 that affects the interaction with Chs4p.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.421-433
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• 2016

Recently, although the interest in transfer and transactions of intangible assets increases, there is no valuation model to objectively assess market value of knowledge and information contents such as electronic databases and the necessity of researches associated is brought up. Therefore, the present study proposes valuation models so as to utilize as objective reference information in the contents market of intangible assets, by assessing the market value of science and technology information contents including patents, academic papers and reports. First, we look into application methods of calculating cash flows by content types out of key variables which has been applied to the present technology valuation, and in case of patents we propose valuation methods based on concepts which are applied in the present technology valuation. Next, in case of both papers and reports, in order to reflect the characteristics of these contents we newly propose qualitative valuation methods which are adjustable based on both technology innovation and market demands indices while estimating the economic life cycle of the technology, and also present the input cost-based calculation method as the calculation method of cash flows. Throughout the study, we could establish frameworks by technology fields and business models applicable such as copyright licensing, transactions of individual science and technology information contents, and expect that more objective and reasonable assessment of content values is accessible.

• Korean Journal of Health Education and Promotion
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• v.16 no.1
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• pp.203-232
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• 1999

This study reviewed the, reference of health promotion program and investigated the status of health promotion program at work sites in U.S.A. Good health promotion program is essential for both employees and employers to reduce morbidity rate, to promote productivity and to enhance quality of life and so on. Health promotion aimed at modifying unhealthy life-styles by building awareness, knowledge, skills, and interpersonal support. And health promotion cycle is resemblance to the plan-do-check-act. The major contents of this study are briefed following as : 1) Links between life-style, environment, and health 2) Effect of work sites health promotion effort 3) Prevalence and contents of work site health promotion programs 4) Health promotion process 5) Program framework and structure 6) Stages in the health promotion cycle 7) Approaches for modifying organizational stressors In addition this, the survey was conducted to aim diagnosing the status of health promotion p개gram in work sites in Korea. The main finding-outs are summarized as follows: 1) In 4 large size work sites, there are working with 1 doctor in all work sites, 1 nurse per 3,000 employees and other health related professionals. They have clinic office(4 work sites), gymnasium(2 work sites), and other many facilities like physical therapy center. And only one company have a wellness clinic center. All employees use to exercise health gymnastics in terms of 5 minutes regularly 2 times in a day. 2) In 4 middle size work sites, there are no doctor, 1 nurse and 1 nutritionist in all work sites. They have also clinic, physical therapy center(1 work site), and all employees exercise health gymnastics regularly 2 times in a day too.

• The Journal of the Korea Contents Association
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• v.16 no.8
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• pp.192-201
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• 2016

The purpose of this study is to verify the correlations among mindfulness, interpersonal relationships, and life satisfaction and to verify the mediating effect of the interpersonal relationships. Questionnaire survey measuring the mindfulness, the interpersonal relationships, and the life satisfaction was performed for 549 adult males and females. The research results by structural equation model to investigate the correlations among mindfulness, interpersonal relationships, and life satisfaction are as follows. First, mindfulness, interpersonal relationships, and life satisfaction steadily increase in accordance with the three stages of life: youth, early adults, middle and old age. Second, mindfulness has a significantly positive effect on interpersonal relationships and life satisfaction, and interpersonal relationships also has a significantly positive effect on life satisfaction. Third, interpersonal relationships has a significantly mediating effect between the relationships between mindfulness and life satisfaction. These results imply that various and active works are required to improve interpersonal relationships as well as mindfulness to enhance life satisfaction.

• International Journal of Contents
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• v.6 no.4
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• pp.22-29
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• 2010

In flash memory, many previous garbage collection methods only merge blocks statically and do not consider the contents of buffer. These schemes may cause more unnecessary block erase operations and page copy operations. However, since flash memory has the limitation of maximum rate and life cycle to delete each block, an efficient garbage collection method to evenly wear out the flash memory region is needed. This paper proposes a memory compaction scheme based on block-level buffer for flash memory. The proposed scheme not only merges the data blocks and the corresponding log block, but also searches for the block-level buffer to find the corresponding buffer blocks. Consequently, unnecessary potential page copying operations and block erasure operations could be reduced, thereby improving the performance of flash memory and prolonging the lifetime of flash memory.

• Journal of The Korean Association of Information Education
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• v.3 no.1
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• pp.33-43
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• 1999

Most educational Web contents developed so far can be regarded' as another type of printed textbooks since they are made up of static lists of textual information. It results in a lack of capability in such educational viewpoints as interaction between students and/or teachers, self-directed learning of individual students, and so on. This paper proposes a new style of Web contents, which can improve the self-directed learning capabilities as well as the interaction between students, with the topic of "the life cycle of frog" that the student studies in the third year of elementary school. It has been designed to provide BBS and a studying material appropriate to the achievement level of individual students, and implemented with DHTML and Java.