• Journal of The Korean Society of Agricultural Engineers
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• v.57 no.1
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• pp.99-109
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• 2015

In the construction industry, the interest for recycling aggregates is rising as more people demand for alternatives due to lack of supply of natural aggregates and environmental problems. However, in order for recycled aggregates to be used in infrastructures, stability and other factors need to be verified. Therefore, the objective of this study is to analyze the sensitivity of soil properties to secure slope safety according to various heights of embankment when bottom ash and dredged soil mixture is applied in the embankment. In most cases, all heights were safe for the slide for the embankment whether the water level is full or sudden draw down. The result of the sensitivity analysis revealed that the unit weight of embankments is highest among all factors to be considered. However, the sensitivity of the unit weight became smaller and the sensitivity of the friction angle of embankments increased with the height of embankments. The sensitivity of factors of core materials is very small because the core has weaker physical properties than those of the embankment. The effect of the height for each factor is different for each slope and water levels. The sensitivity of the unit weight of embankments is most affected when the height is 60m in the upstream slope. To conclude, bottom ash and dredged soil mixture can be applied in the embankment and different factors must be considered in different scale because the sensitivity depends highly on the height of embankments.

• Journal of Microbiology and Biotechnology
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• v.20 no.12
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• pp.1653-1663
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• 2010

The first gene (${\alpha}$-gal1) encoding an extracellular ${\alpha}$-Dgalactosidase from the thermophilic fungus Talaromyces emersonii was cloned and characterized. The ${\alpha}$-gal1 gene consisted of an open reading frame of 1,792 base pairs interrupted by six introns that encoded a mature protein of 452 amino acids, including a 24 amino acid secretory signal sequence. The translated protein had highest identity with other fungal ${\alpha}$-galactosidases belonging to glycosyl hydrolase family 27. The ${\alpha}$-gal1 gene was overexpressed as a secretory protein with an N-terminal histidine tag in the methylotrophic yeast Pichia pastoris. Recombinant ${\alpha}$-Gal1 was secreted into the culture medium as a monomeric glycoprotein with a maximal yield of 10.75 mg/l and purified to homogeneity using Hisbinding nickel-agarose affinity chromatography. The purified enzyme was maximally active at $70^{\circ}C$, pH 4.5, and lost no activity over 10 days at $50^{\circ}C$. ${\alpha}$-Gal1 followed Michaelis-Menten kinetics ($V_{max}\;of\;240.3{\mu}M/min/mg,\;K_m\;of\;0.294 mM$) and was inhibited competitively by galactose ($K_m{^{obs}}$ of 0.57 mM, $K_i$ of 2.77 mM). The recombinant T. emersonii ${\alpha}$-galactosidase displayed broad substrate preference, being active on both oligo- and polymeric substrates, yet had strict specificity for the ${\alpha}$-galactosidic linkage. Owing to its substrate preference and noteworthy stability, ${\alpha}$-Gal1 is of particular interest for possible biotechnological applications involving the processing of plant materials.

• Journal of the Korean GEO-environmental Society
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• v.17 no.6
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• pp.13-21
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• 2016

Since the landslide hazard areas prediction was analyzed by slope-angle and soil properties, regional characteristics is not taken. Therefore, in order to make more rational prediction, it is necessary to consider the characteristics of the region. Tree roots have been known to increase soil cohesion in landslide hazard areas and to vary the degrees depending on the tree type. In addition, a reasonable prediction of landslide hazard areas can be made by considering crown density based on crown distribution patterns of the area of interest. In this study, using the roots cohesion considering the crown density of the trees, which is in the landslides risk areas around Mt. Gwehwa in Sejong City, the landslides risk areas were predicted and compared with predicted results obtained by not considering root cohesion.

• Journal of Dental Rehabilitation and Applied Science
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• v.32 no.3
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• pp.214-223
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• 2016

Implant-assisted removable partial denture (Implant-assisted RPD, IARPD), posterior edentulous extension areas of which obtains additional support and retention from implants, is attracting increasing interest. This case report presents a successful treatment on a partially edentulous patient with a severely canted occlusal plane resulted from a long-term use of posterior extended RPD. The full mouth was rehabilitated through a fixed prosthesis on maxilla and IARPD with zirconia occlusal surface on mandible, which allowed to achieve an esthetic occlusal plane with long-term stability and, ultimately, functionally satisfying outcome.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.547-550
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• 2017

With the deployment of Internet of Things (IoT) services, the interest of smart building management system is rapidly increased. However, existing smart building management system has some limitations such as single point of failure, scalability, processing delay by using the centralized service platform server. To overcome these limitations, in this paper, the distributed server based smart building management scheme is proposed. In the proposed scheme, it is possible to provide fast and efficient IoT services, regardless of the scale of smart building, by using the distributed server of each floor. From the numerical analysis, it is shown that the proposed scheme provides better performance than the existing centralized scheme in terms of stability of database and service processing delay.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.6B
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• pp.921-929
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• 2010

Group communication that involves the setup of a list of users has been a topic of interest in mobile industry. Push to Talk over Cellular (PoC), a group communication service for cellular phone network, is a type of half duplex communications that allows a single person to reach an active talk group without making several calls, but a single button press. Based on this service, we build a new protocol called Push to Talk over Mobile Wimax that uses group communication service in 802.16e network. Also, weper formed simulation to verify and evaluate performance of the designed service in Mobile Wimax network. From the results of performance evaluation, network administrators can evaluate the stability of network and make a better of network's shortcoming and have decision to build the robust network.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.37-52
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• 2013

Prior to full-scale implementation of smart grid, the Korean government is conducting a smart grid testbed in Jeju island. However, the participants of the ongoing program are skeptical about the success of the expansion of smart grid. The concern rises from various reasons; the limits of the Korean electricity market mainly led by both the government and KEPCO, high stability and reliability of the existing electricity grid, insufficient utilization of renewable energy, and public fear of raised electricity bills. Five key issues in regards to facilitating the Korean smart grid market are extracted and evaluated. The issues are conflict of interest among participants, the effect of introducing real-time pricing, lack of customer participation of demand response, and absence of business models.

• Journal of Korean Academy of Nursing
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• v.13 no.3
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• pp.75-85
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• 1983

This study was done to research the relationship between general characteristics and stressor, stress situation, Nursing Intervention of pregnant woman. The subjects for this study were 70 pregnant woman from 3 clinics of Obstetrics and Gynecology located in J city. The data was collected through questionaires which was developed by Norman J. Chestnut. The content of the questionaire consist of following 3 categories; (1) stressor (2) stress situation (3) Mental and Physical support of husband. Analysis of data was done by use percentage, x²-test. (through EDPS) The findings of this study are as follows; 1, Stressors of pregnant woman are stresses associated with fetus, socioeconomic problem, herself, delivery, abortion and prematureity, husband, change of appearances, management of home, a woman's parents-in-law. Stress situations of pregnant woman are when she is doing on the heavy management of home, limit of life, socioeconomic discomfort, taking medicine, difficult relationship with a woman's parents-in-law, being sign of abortion and prematurity, her physical discomfort, family desire of delivery of son baby. 2. Husband's mental support that pregnant woman desired are careful husband's role, More love and interest about pregnant, cooperation of child reaing, maintenance of healthy life, understaning of diffical pregnancy, early return home, giving up drinking, positive feeling about changed appearance, unconcern about sex of fetus. And husband's mental supports that pregnant woman desired are cooperating of homework and childrearing, limit of intercouse, release behavior of pregnant woman's physical discern-fort, a walk, behavior with pregnancy together, socioeconomic stability. 3. Stressor of pregnant woman was significant with education, number of son, economic status, personality of husband, dowelling. (P<.05) And stress situation of pregnant woman was significant with personality of husband, dwelling, husband's desired sex .of baby. (P<.05) 4. Husband's mental and physical supports that pregnant woman desired was significant with number of daughter. (P<.05).

• Journal of Oriental Medical Thermology
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• v.8 no.1
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• pp.48-63
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• 2010

Purpose : Mothers and primary encounter and Korean traditional Gynecology clinician's perspective on breastfeeding, the importance and general knowledge, familiar with the breastfeeding-related issues to help resolve the maternal education and treatment. treatment options for a specific note down the need for Maternity and think that the existing studies and articles about breast diseases with reference to the view of the contemplated. Method : Maternity and breast disease with reference to research and review papers. Results : The first, from the past to encourage nursing mothers to eat a lot of nursing was given recently is changing the perception of adequate calories. and second, the posture of breastfeeding in prevention of mother's fatigue and pain and the baby's milk intake should be considered effective. The third, breast feeding is heavier than normal because of the surrounding muscle tissue in the breast to support the training may be helpful to. At last is emotional stability, and adequate nutritional intake and their milk is not enough awareness and interest in and education about breast-feeding mothers to breastfeed will help you look. Conclusion : Prenatal care program in order to facilitate breastfeeding and breast-feeding from the breast managed Postpartum Care Program consists of a map for the breast-related discomfort in advance to lead to prevention and to increase women's satisfaction seems to be.

• Journal of Korean Academy of Rural Health Nursing
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• v.3 no.1
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• pp.24-33
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• 2008

Purpose: To analyze health programs of the PHCP (Primary Health Care Posts) Method: From August 2006 to July 2007, data on the general quality and health program of the PHCP was requested by official letter and replies were received via E-mail. From December 8 to December 30, 2007, data from 1,268 (66.8%) PHCP out of 1,897 PHCP were analyzed using SPSS 12.0 Win program. Results: The average population covered by each PHCP is 878.3 people. For the health and special programs, Community Health Practitioners report high motivation for programs on health promotion, management of chronic illness, social welfare (40-50%). Demand by the residents was reported at 10% and increases in the health of the residents were attributed to high interest and demand. Volunteer work was 83.3% for bathing, 54.5% for equipment support and 46% for exercise programs. As elders make up 30% of the population in rural areas, there is an increasing demand for volunteer work in bathing programs. Conclusions: As the number of elders in the population increases and there is an increased need for more medical treatment for older people who are sick, the role of PHCP must be strengthened to include visits to homes of community residents. Where financial support for the PHCP is difficult, it is necessary to develop sound data on demographic characteristics of the population in order to develop efficient and effective health promotion programs. The finding that 54.7% of the population need management of chronic illness has difficulty in seeing a physician indicates a need to enhance the health care delivery system by strengthening the role of the Community Health Practitioners and including them in the civil service system to ensure stability of the PHCP.