• The Korean Journal of Health Service Management
• /
• v.6 no.4
• /
• pp.131-142
• /
• 2012

The purpose of the study was to identify the mediating effects of health promoting lifestyle in the relationship between life stress and adaptation to college life of health department college students. The data was collected for 10 days form sept. 3 to 14, 2012. Among a total of 351 cases of questionaries, only 342 cases were used. To data were analyzed by frequency, t-test, ANOVA, correlation and a hierarchical multiple regression analysis as suggested by Baron and Kenny(1986) using PASW statistics 18.0. From the analyses, there was a negative relationship between life stress and adaptation to college life but a positive relationship between health promoting lifestyle and adaptation to college life. There was a partial mediating effect of health promoting lifestyle between life stress and adaptation to college life. The results indicate a need to develop programs that effectively promote the health promoting lifestyle of health department college students to decrease life stress and maximize adaptation to college life.

• East Asian mathematical journal
• /
• v.32 no.3
• /
• pp.301-310
• /
• 2016

Lookback options, in the terminology of nance, are a type of exotic option with path dependency whose the payoff depends on the optimal (maximum or minimum) underlying asset's price occurring over the life of the option. In this paper, we exploit Mellin transform techniques to find a closed-form solution for European lookback options in Black-Scholes model.

• Journal of the Korean Society for Railway
• /
• v.8 no.3
• /
• pp.203-209
• /
• 2005

Y-form steel sleeper are currently enjoying a renaissance in Germany. Their use on ballast track proves hat-especially under extreme conditions and loads-they reliably help ensure high stability and a long service life of the track. In addition to conventional partly mechanised tracklaying methods, a new Method has been developed that for the first time enables Y-form sleepers to be laid on an assembly-line basis at a fast rate and with high quality.

• Journal of the Korean Professional Engineers Association
• /
• v.45 no.2
• /
• pp.44-47
• /
• 2012

The water is very important resource that we can maintain our life and get the high-quality energy. The water begins with creation of the earth and circulates in the atmosphere, ocean, surface and subsurface in the form gases, liquids and solids. Human has used the water in abundance, however we have polluted water irresponsibly and discharged wastewater into the earth. We must think, how long does areas, pollution, pollution treatment, produce. Consider together about the water shock will occur when in any form.

• Journal of the Korean Institute of Rural Architecture
• /
• v.2 no.2
• /
• pp.11-22
• /
• 2000

The structure and space construction of local houses and its form of shape were under the influence of the character of locality and times. Each area makes an distinctive culture by spreading the developed culture to an undeveloped area. Frequent interchange were formed between Samcheok and Bonghwa district for a long time ago. But the change of life zone by progressive traffic makes it to a strange area. Accordingly this study clarify the changed shape and form of local houses by selecting and put it on record an scattered along the road of old times.

• Proceedings of the KSR Conference
• /
• 2002.10a
• /
• pp.642-647
• /
• 2002

Y-form steel sleeper are currently enjoying a renaissance in Germany. Their use on ballast track proves that-especially under extreme conditions and loads-they reliably help ensure high stability and a long service life of the track. In addition to conventional partly mechanised tracklaying methods, a new Method has been developed that for the first time enables Y-form sleepers to be laid on an assembly-line basis at a fast rate and with high quality.

• Journal of Applied and Pure Mathematics
• /
• v.5 no.1_2
• /
• pp.109-119
• /
• 2023

As for the practical purpose of mathematics education, the extrinsic purpose is emphasized. As an alternative to this, a discussion on mathematics education as a character education is urgently requested. It can be said that the main purpose of learning mathematics is to have a form of life that values the form and structure of mathematics. The epistemological basis of such an idea can be seen as based on Kant's philosophy. Kant's epistemology can provide one answer to the question of the intrinsic purpose of mathematics education.

• Journal of Microbiology and Biotechnology
• /
• v.11 no.6
• /
• pp.1031-1037
• /
• 2001

By a sequential action of ${\beta}$-ketothiolase and acetoacetyl-CoA reductase, two molecules of acetyl-CoA re converted into D-3-hydroxybutyryl-CoA, a substrate for PHB synthase to form poly-3-hydroxybutyryl-CoA, a substrate for PHB synthase to form poly-3-hydroxybutyrate (PHB) of rhodobacter sphaeroides. The ${\beta}$-ketothiolase gene, phbA, and acetoacetyl-CoA reductase gene, phbB, were cloned and analyzed for their expression. Enzyme activities of ${\beta}$-ketothiolase and acetoacetyl-CoA reductase showed constitutive levels during aerobic and photoheterotrophic growth of R. sphaeroides. In addition, no difference of each enzyme activity was observed between cells grown aerobically and photoheterotrophically. The constitutive level of the enzyme activities are regulated according to the growth phases along with growth conditions. Thus, phbAB expression is not determinative in regulating the PB content. On the other hand, phbA-deleted cell AZI accumulated only $10\%$ PHB of the wild-type, and an elevated dosage of phbAB in trans in R. sphaeroides resulted in a higher content of PHB, indicating that phbAB codes for the enzymes responsible for providing the main supply of subsyrate for PHB synthase. PHB formation by an alternative pathway that does not does not depend on the phbA-and phbB-coding enzymes is also proposed.

• BMB Reports
• /
• v.45 no.4
• /
• pp.239-241
• /
• 2012

Iron availability is limited in the environment and most bacteria have developed a system to acquire iron from host hemoproteins. Heme oxygenase plays an important role by degrading heme group and releasing the essential nutrient iron. The structure of Bacillus subtilis HmoB was determined to 2.0 ${\AA}$ resolution. B. subtilis HmoB contains a typical antibiotic biosynthesis monooxygenase (ABM) domain that spans from 71 to 146 residues and belongs to the IsdG family heme oxygenases. Comparison of HmoB and IsdG family proteins showed that the C-terminal region of HmoB has similar sequence and structure to IsdG family proteins and contains conserved critical residues for heme degradation. However, HmoB is distinct from other IsdG family proteins in that HmoB is about 60 amino acids longer in the N-terminus and does not form a dimer whereas previously studied IsdG family heme oxygenases form functional homodimers. Interestingly, the structure of monomeric HmoB resembles the dimeric structure of IsdG family proteins. Hence, B. subtilis HmoB is a heme oxygenase with a novel structural feature.

• BMB Reports
• /
• v.41 no.2
• /
• pp.132-138
• /
• 2008

AtbZIP16 and AtbZIP68 are two putative G group bZIP transcription factors in Arabidopsis thaliana, the other three members of G group bZIPs are GBF1-3 which can bind G-box. Members of G group have conservative protein structure: highly homological basic region and a proline-rich domain in the N-terminal region. Here, we report that AtbZIP16 and AtbZIP68 could bind cis elements with ACGT core, such as G-box, Hex, C-box and As-1, but with different binding affinities which from high to low were G-box > Hex > C-box > As-1; AtbZIP16 and AtbZIP68 could form homodimer and form heterodimer with other members of G group; N-terminal proline rich domain of AtbZIP16 had transactivation activity in yeast cells while that of AtbZIP68 did not; AtbZIP16 and AtbZIP68 GFP fusion protein localized in the nucleus of onion epidermal cells. These results indicated that AtbZIP16 and AtbZIP68 were two new members of GBFs. In Arabidopsis, AtbZIP16 and AtbZIP68 may also participate in light-responsive process in which GBF1-3 are involved.