• Proceedings of the Earthquake Engineering Society of Korea Conference
• /
• 2003.03a
• /
• pp.157-164
• /
• 2003

A simulation-based approach that can be used to systematically model the uncertainties of seismic loading and geotechnical property is presented in the context of reliability analysis of slope stability. The uncertainty of seismic loading is studied by generating a large series of hazard-compatible artificial motions, and by using them in subsequent response analyses. The stochastic nature of spatially varying material properties and also the uncertainty arising from insufficient information are treated in the framework of random fields. The simulation-based analyses indicate that in a seismically less active region, a moderate variability in soil properties has a relatively large effect as much as characterization of earthquake hazard on the computed risk of slope failure and excessive slope deformations.

• Earthquakes and Structures
• /
• v.8 no.1
• /
• pp.1-18
• /
• 2015

A simple method of assessing the risk of overturning of precast reinforced concrete columns is presented in this paper. The displacement-based methodology introduced herein is distinguished from conventional force-based codified methods of aseismic design of structures. As evidenced by results from field tests precast reinforced concrete columns can be displaced to a generous limit without sustaining damage and then fully recover from most of the displacement afterwards. Realistic predictions of the displacement demand of such (rocking) system in conjunction with the displacement capacity estimates enable fragility curves for overturning to be constructed. The interesting observation from the developed fragility curves is that the probability of failure of the precast soft-storey column decreases with increasing size of the column importantly illustrating the "size effect" phenomenon.

• Journal of Industrial Convergence
• /
• v.6 no.2
• /
• pp.57-74
• /
• 2008

This study investigates the relationship among Appraisal outcome Satisfaction. Perceived Organization Support and Perceived Appraisal Justice. Several important findings emerge from this research. First. both distributive and procedural justice have a significant power in accounting for Perceived Organization Support. Second, it is evidenced that perceiving justice has a positive relationship with perceived organization support. Third, appraisal outcome satisfaction was higher, the level of distributive, procedural. interactional justice and perceived organization support were high. Future study. therefore. have to concentrate on the survey of casual relations among each concept in the framework of a longitudinal study. And to apply the results of this study to practical management, it is suggested that replicate research on various populations and through various experiments should be mand in the future.

• Proceedings of the PSK Conference
• /
• 2003.10b
• /
• pp.210.1-210.1
• /
• 2003

Keokhachukeu-tang is the one of Chinese traditional prescription used for the treatment of liver disease. This prescription consists of Carthami Flos (6g), Persicae Semen (9g), Pteropi Faeces (9g), Corydalis Tuber (9g), Moutan Radicis Cortex (6g), Paeoniae Radix rubra (9g), Angelicae gigantis Radix (9g), Cnidii Rhizoma (9g), Linderae Radix (12g), Cyperi Rhizoma (12g), Aurantii Fructus (9g), and Glycyrrhizae Radix (3g). Water extract of Keokhachukeu-tang showed a moderate hepatoprotective effect on tacrine-induced cytotoxicity in Hep G2 cells. (omitted)

• Journal of the Korean Wood Science and Technology
• /
• v.31 no.6
• /
• pp.22-30
• /
• 2003

This study was performed to obtain the basic data for high quality timber production and efficient utilization by investigating the effect of pruning on timber quality of domestic plantation-grown Korean pine (Pinus koraiensis Sieb. et Zucc.). The results were summarized as follows:Dead knots (unsound knots) in the pruned logs occurred more at upper parts when compared with in non-pruned ones. The numbers of knots on surface in heavily pruned trees were less than those in non-pruned trees, but there was no significant difference in moderately pruned trees. The required period to reveal clear timber surface without defects after pruning increased proportionally with the increase of knot diameter. The yield of clear lumber production increased by about 10% after 14 years from moderate pruning. The quality grade of log improved with more pruning practices. Knots appeared the most important factor in lowering the log grades.

• Structural Engineering and Mechanics
• /
• v.82 no.2
• /
• pp.133-149
• /
• 2022

This study investigates the resistance of sustainable ultra-high performance concrete (UHPC) on steel reinforcement corrosion. For enhancing the sustainability of UHPC, concrete mixes were prepared with ordinary Portland cement main binder, and mixes with moderate to high percentages of blast furnace cement (CEM III), fly ash (FA), and slag cement as partial replacements of the full quantity of the used cement. Linear polarization resistance technique was employed to estimate the electrochemical behavior of the concrete specimens. Results showed that the compressive strength and the resistance of steel to corrosion in marine environments can be enhanced by improving the sustainability of UHPC through incorporation of CEM III, FA, and slag cement. FA replacement of up to 50% with the addition of 15% SF content produced better compressive strength and steel corrosion resistance than slag cement whether with the use of ordinary Portland cement or blast furnace cement as the main binder.

• International Journal of Advanced Culture Technology
• /
• v.11 no.3
• /
• pp.113-121
• /
• 2023

The purpose of this study is to verify whether there is a difference in boredom between education types (offline vs. online) in the mandatory education scene, and to explore the moderator effect of meaning making activities in the relationship between education types and boredom. In this study, 197 college students were divided into offline and online groups and they participated in mandatory education. The meaning making activity was operationalized based on the meaning discovery scale. As a result of the study, the state boredom after mandatory education was significantly higher in the online group than in the offline group. However, meaning making activities did not moderate the relationship between education type and the state boredom. Through further analysis, it was found that boredom in both groups significantly decreased after the meaning making activity.

• International Journal of Computer Science & Network Security
• /
• v.23 no.6
• /
• pp.121-126
• /
• 2023

Many organizations are looking for digital innovation to apply in business process management and this information revolution leaves its effect on the businesses and anticipate competitors. In this article, investigates the strength of the relationship between business process management (BMP) and Digital Innovations (DI) since it has been underdeveloped. The results and findings are extracted from international survey with explanations of expert panel to generalized a positive and moderate link of multiple factors that are affecting the strategic decision-making in business process management. It is extended to the Technology Organization Environment (TOE) framework and contour organizations along their Digital Process Innovation (DPI).

• Asia Marketing Journal
• /
• v.16 no.3
• /
• pp.1-22
• /
• 2014

In this paper, we posit that time-related effects (i.e., the importance of saving time) on patronage preference for shopping online will be moderated by consumer characteristics. To explore these moderating effects, we empirically examine the moderating roles of consumer characteristics on the respective effects of shopping-time-saved and delivery on online purchase preference. On the basis of analyses performed on data gleaned from an Internet-based survey, this study demonstrate that time effects related to both shopping-time-saved and delivery on online purchase preference are more pronounced for consumers who are male, young, and more starved for time. In addition, the effect of delivery time on online patronage preference is amplified by disposable income, but attenuated by online shopping experience. Through our analyses, we also find that Japanese consumers value delivery time to a greater degree than Chinese and American consumers do.

• Korean Journal of Veterinary Research
• /
• v.63 no.3
• /
• pp.22.1-22.4
• /
• 2023

The increasing resistance of head lice Pediculus humanus capitis to many drugs has highlighted the need for new alternatives to control head lice in adults. The effect of two types of extracts (aqueous and alcoholic) of Citrullus colocynthis fruit on adult lice was tested in vitro. The results showed that the alcoholic extract with a concentration of 20% showed similar efficacy in killing adult lice to that of Natroba 9% w/w, with values ranging between 87% to 98% within 18 minutes, followed by a 20% aqueous extract with a 44% to 79% death rate. A 10% concentration of both types of extracts had moderate lethality for lice, while a 5% concentration did not show strong lethality for adult lice. These results revealed significant differences between the control group and those treated with alcoholic and aqueous extract concentrations of C. colocynthis fruits at the probability level p ≤ 0.05.