• Journal of the Korean Geotechnical Society
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• v.32 no.9
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• pp.17-27
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• 2016

Parial drainage characteristics of clayey silt with low plasticity from the west coast (Incheon and Hwaseong) was analyzed using CPTU based existing correlation equations and compulsory replacement method. Generally, the estimated $OCRs={\kappa}{\cdot}((q_t-{\sigma}_{vo})/{\sigma}^{\prime}_{vo})$ using Powell and Quartman(1988) were higher than those obtained by the oeodometer tests. These trends were noticeable for the layers containing a lot of silty and sand soils. The assessment of partial drainage conditions was performed through Schnaid et al. (2004)'s equation; it is based on plotting the normalized cone resistance, $Q_t$ versus the pore pressure parameter, $B_q$ in combination with the strength incremental ratio, $s_u/{\sigma}^{\prime}_{vo}$ to the CPTU data. It is evident that more than half of the data fall in the range where $B_q$ < 0.3, corresponding to the domain in which the partial drainage prevails when testing normally consolidated soils at a standard rate of penetration (2 cm/s). To estimate the replacement depth of clayey silt with low plasticity, back analysis was carried out to evaluate the internal friction angle based on where the design depths are equal to the checked depths using bearing capacity equation. The internal friction angels obtained from the back analysis tended to increase as the plasticity index decreases, which is ranged approximately from ${\varphi}^{\prime}=2^{\circ}$ to ${\varphi}^{\prime}=7^{\circ}$.

• Communications of the Korean Mathematical Society
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• v.37 no.4
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• pp.1073-1097
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• 2022

In this paper, we shall be concerned with evaluation of multifractal Hausdorff measure 𝓗^q,t_𝜇 and multifractal packing measure 𝓟^q,t_𝜇 of Cartesian product sets by means of the measure of their components. This is done by investigating the density result introduced in [34]. As a consequence, we get the inequalities related to the multifractal dimension functions, proved in [35], by using a unified method for all the inequalities. Finally, we discuss the extension of our approach to studying the multifractal Hewitt-Stromberg measures of Cartesian product sets.

• Proceedings of the KIEE Conference
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• 2005.07d
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• pp.2522-2524
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• 2005

We need build a mathematical to apply the system theory to real system, phenomenon analysis, prediction, control, simulation and so on. Especially system identification is building a model from input and output data. This study shows q-Markov Cover based system identification. When we do this, in order to make the identification possible under more general conditions with estimation of the system order, Markov parameters and covariance parameters from input and douput data, 1 suggest the way we can get an optimal model by estimating and Identifying of covariance matrix of observation noises repeatedly.

• Proceedings of the IEEK Conference
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• 2002.06b
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• pp.37-40
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• 2002

We have been fabricated the white organic electroluminescent devices using vacuum evaporation method. The structure of the white OELD is Glass/1T0/NPB/DPVBi/AI $q_{3:}$ Ru bren e/B CP/Alq $q_3$/Al. We have got the white emission with two-wavelength that is mixing blue emission in DPVBi layer and orange emission in Al $q_{3:}$Rubrene layer by varying tile doping concentrations of Rubrene and the thickness of NPB layer.yer.

• Journal of Electrical Engineering and Technology
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• v.5 no.4
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• pp.592-596
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• 2010

In a multi-layer interior permanent magnet synchronous motor, the d- and q-axis parameters vary nonlinearly according to different load conditions, consequently changing the level of saturation. The flux-linkage of d- and q-axis conveys ripple characteristics resulting from mechanical structure and degree of magnetic saturation. If the calculated flux-linkage is correct, the torque using the Maxwell stress tensor method is the same torque calculated by the flux-linkage. However, discrepancy between results exists. In this paper, the d- and q-axis flux-linkage, in consideration of the ripple characteristic, is calculated. Simulation results are then compared with experimental results.

• Journal of the Korean Applied Science and Technology
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• v.14 no.2
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• pp.81-85
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• 1997

Tris(8-hydroxyquinoline)-aluminum complex($AlQ_3$) having greenish luminescent characteristics was synthesized and it was confirmed with UV-Vis absorption spectroscopy, elemental analysis, and FT-IR spectroscopy that $AlQ_3$ was successfully synthesized. Thin films of $AlQ_3$ having multilayer structure were prepared by spin coating method and vacuum evaporation technique. Photopluminescent characteristics of these films were investigated by Luminescence spectroscopy and Current-Voltage(I-V) characteristics of these films were also investigated.

• Journal of Korean Academy of Nursing
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• v.33 no.4
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• pp.519-528
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• 2003

Background. In Seoul, Korea, 70% of all adult males are reported to be smokers, and guidelines to smoking cessation generally include ways to help smokers avoid situations of smoking temptation. However the phenomenon of smoking temptation has been scarcely studied. Therefore, it is critical to acquire a better under-standing of smoking temptation for more effective nursing practice. Aim. This study intends to analyze the subjectivity of smoking temptation. Design. Q-methodology, which applies a scientific method to subjectivity, was utilized. Findings. Five distinct smoking temptation modalities, on Q-types, emerged from the Q-sort: 1) Urge to facilitate interpersonal relation; 2) Psychological desire for tranquility; 3) Habituation in social life; 4) Habituation in daily life; and, 5) Nicotine craving combined with daily routine. Conclusion. It is hoped that analysis of the five types of smoking temptation identified in this study will contribute to the body of knowledge and a better understanding of why smokers are addicted to smoking.

• Wind and Structures
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• v.12 no.2
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• pp.121-132
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• 2009

A systematic reliability evaluation approach for torsional divergence analysis of long span suspension bridges is proposed, consisting of the first order reliability method and a simplified torsional divergence analysis method. The proposed method was implemented in the deterministic torsional divergence analysis program SIMTDB through a new strategy involving interfacing the proposed method with SIMTDB via a freely available MATLAB software tool (FERUM). A numerical example involving a detailed computational model of a long span suspension bridge with a main span of 888 m is presented to demonstrate the applicability and merits of the proposed method and the associated software strategy. Finally, the most influential random variables on the reliability of long span suspension bridges against torsional divergence failure are identified by a sensitivity analysis.

• Korean Journal of Adult Nursing
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• v.15 no.1
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• pp.94-104
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• 2003

Purpose: This study was performed to identify the factors which affected exercise and the perceived exercise behaviors in women according to Q-methodology and to provide basic strategies for health promotion of middle-aged women in Korea. Method: Q-methodology provides a scientific method for identifying perception structures that exist within certain individuals or groups. Thirty subjects in Seoul, Incheon, Chung-buk classified 35 selected Q-statements in to 9 points standard. The collected data was analyzed by using a QUANL pc program. Result: Principal component analysis identified 3 types of exercise behavior of middle-aged women in Korea and named by the researcher. They are called persistent activity preference type, living-exercise preference type, exercise mania type. In persistent activity preference type, the middle-aged women thought activity was very helpful to achieving health and releasing stress or fatigue. Also, they recognized the relationship between physical health and psychological health. In living-exercise preference type, the middle-aged women preferred maintaining stability or nonactivity to intended exercise or activity for health. In exercise mania type, the middle-aged women thought there was no other way to keep her health than to exercise. Conclusion: The findings of this study will provide the health care provider including nurse with useful information. It's very important to offer appropriate exercise intervention to the middle-aged women of each type by taking into consideration the characteristics of individual types.

• Women's Health Nursing
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• v.4 no.1
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• pp.103-122
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• 1998

This study measures the subjectivity(opinions attitudes) of college women. Identifying the schemata (structure of subjectivity) would be a basic step for the sexual educational program and alternative strategies of induced abortion. More concretely, those following research questions are focused. 1) The subjective schemata : find out typologies based on the opinions and attitudes toward the induced abortion. 2) Applications : describe the characteristics of each type. 3) Alternatives : provide suggestion of the alternative strategies for solving the induced abortion problems of women. Q-Methodological method was used for that purpose. As the research method, Q-statements were collected preliminary to the study of through in-depth interviews and a literature review. For the study 34 Q-statements were selected. There were 48 college women as subjects for the research. The 48 college women sorted the 34 statements using the principle of Forced Normal Distribution. The principle of Forced Normal Distribution, which has nine scales to measure the individual opinions, was called. Q-Factor Analysis by using PC Quanl Program to supply the material. According to the outcomes of this study, there were four categories of special opinion about the induced abortion in college women. The first type is called Practical type. The second type is called Responsible type. The third type is called Ambivalent type. As a result, We now need to change our perspective of women's health problems and need to develop realistic way of caring those women in suffering women's problems. Followings are to be suggested of the alternative strategies for solving the induced abortion problems. Finally, The result of the study will provide us the clue for developing the sexual educational program and alternative strategies for women's induced abortion problems.