• Korean Journal of Oriental Medicine
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• v.11 no.2
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• pp.167-178
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• 2005

As a part of the quality control of herbal prescriptions which has been used for diabetes and related diseases, a reversed-phase liquid chromatographic method was developed for the simultaneous quantification of the three marker compounds, puerarin (Puerariae Radix), glycyrrhizin (Glycyrrhizae Radix), schizandrin (Schizandrae Fructus) in Oc Chun San. The HPLC analysis method was validated for parameters such as linearity, Limits of Detection(LOD), quantification(LOQ), repeatability, stability and recovery.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.10 no.4
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• pp.275-280
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• 2010

Verification of efficiency in data management fuzzy entropy and similarity measure were discussed and verified by applying reliable data selection problem and numerical data similarity evaluation. In order to calculate the certainty or uncertainty fuzzy entropy and similarity measure are designed and proved. Designed fuzzy entropy and similarity are considered as dissimilarity measure and similarity measure, and the relation between two measures are explained through graphical illustration. Obtained measures are useful to the application of decision theory and mutual information analysis problem. Extension of data quantification results based on the proposed measures are applicable to the decision making and fuzzy game theory.

• Journal of Korean Society for Quality Management
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• v.30 no.3
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• pp.38-52
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• 2002

This paper is concerned with the analysis of structural equation model(SEM) with the ordinal data such as Likert scale. The SEM is misused when the arbitrary scores allocated to the Likert scale are treated as quantitative data. The underlying distribution approaches have been studied to solve this problem, and the partial least squares(PLS) Is also tried. In this paper the quantification methods for the Likert scale are proposed to analyze the SEM. We assume that the Likert scale is an observation of the interval of the continuous underlying distribution, and the respondents have their own patterns in the response of some questions. Normal and beta distributions as the response patterns are considered to quantify the Likert scale. To compare the efficiency of the proposed method the bootstrap simulations are tried.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.305.2-306
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• 2003

We aimed at determining bioavailability of chlorphenesin carbamate, a muscle relaxant, and developing a simple analysis in human blood using HPLC. A rapid and sensitive HPLC method was developed and validated using reverse-phase C 18 column with retention time and limit of quantification of toferisone being 8.6 min and 0.5 ng/$m\ell$, respectively. Quantification was performed at 260 nm with tolferison as internal standard. (omitted)

• Proceedings of the KIEE Conference
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• summer
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• pp.645-647
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• 2004

According to NERC definition, Available Transfer Capability (ATC) is a measure of the transfer capability remaining in the physical transmission network for the future commercial activity To calculate ATC, accurate and defensible TTC, CBM and TRM should be calculated in advance. This paper proposes a method to quantify time varying ATC based on probabilistic approach. The uncertainties of power system and market are considered as complex random variables. TRM with the desired probabilistic margin is calculated based on PLF analysis, and CBM is evaluated using LOLE of the system. Suggested ATC quantification method is verified using IEEE RTS with 72 bus. The proposed method shows efficiency and flexibility for the quantification of ATC.

• The KSFM Journal of Fluid Machinery
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• v.10 no.4
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• pp.47-54
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• 2007

Simultaneous 3-D LDV measurements of the in-cylinder flows of three different engine setups were summarized for the quantification of the flow characteristics in each vertical or horizontal plane, and in entire cylinder volume. The ensemble averaged-velocity, tumble and swirl motions, and turbulent kinetic energy during the intake and compression strokes were examined from the measured velocity data (approximately 2,000 points for each engine setup). The better spatial resolution of the 3-D LDV allows measurements of the instantaneous flow structures, yielding more valuable information about the smaller flow structures and the cycle-to-cycle variation of these flow patterns. Tumble and swirl ratios, and turbulent kinetic energy were quantified as planar and volumetric quantities. The measurements and calculation results were animated for the visualization of the flow, and hence ease to analysis.

• Korean Journal of Pharmacognosy
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• v.47 no.2
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• pp.192-196
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• 2016

The herb of Agastache rugosa (Lamiaceae) called Korean mint as a spice or Agastache Herba as a crude drug is known to contain highly fragrant volatile substances. This research aimed to establish the quantitative gas chromatography (GC) method on the essential oil of A. rugosa using the three standard compounds, estragole, methyleugenol, pulegone, and to find whether the essential oil has anti-Alzheimer's activity. The GC quantification method was established by determining the linearity of calibration curve ($R^2$), linear range, and both limit-of-detection (LOD) and limit-of-quantification (LOQ). The $IC_{50}$ of the essential oil on the activities of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) were determined to be $69.06{\pm}0.26$ and $76.71{\pm}0.58{\mu}g/ml$, respectively.

• Communications for Statistical Applications and Methods
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• v.18 no.5
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• pp.637-644
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• 2011

Partially ranked data refers to the situation in which there are p distinct objects; however each judge specifies only first s (s < p) choices. The group theoretic formulation for partially ranked data analysis was set up by Critchlow (1985). We propose a graphical method for partially ranked data by quantifying objects and judges. In a plot for judges, the interpoint distances can be interpreted as Spearman or Kendall distances between two rankings given by respective judges. Similarly, we also construct a plot for objects with a sensible relationship to the previous plot for judges. This study extends the Han and Huh (1995) quantification method of fully ranked data using Gabriel's (1971) biplot technique for multivariate data matrix.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.54 no.11
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• pp.533-539
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• 2005

According to NERC definition, Available Transfer Capability (ATC) is a measure of the transfer capability remaining in the physical transmission network for the future commercial activity. To calculate Available Transfer Capability, accurate and defensible Total Transfer Capability, Capacity Benefit Margin and Transmission Reliability Margin should be calculated in advance. This paper proposes a method to quantify time varying Available Transfer Capability based on probabilistic approach. The uncertainties of power system and market are considered as complex random variables. Total Transfer Capability is determined by optimization technique such as SQP(Sequential Quadratic Programming). Transmission Reliability Margin with the desired probabilistic margin is calculated based on Probabilistic Load Flow analysis, and Capacity Benefit Margin is evaluated using LOLE of the system. Suggested Available Transfer Capability quantification method is verified using IEEE RTS with 72 bus. The proposed method shows efficiency and flexibility for the quantification of Available Transfer Capability.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.304.1-304.1
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• 2003

We aimed at determining bioavailability of tolperisone, a muscle relaxant. and developing a simple analysis in human blood using HPLC. A rapid and snsitive HPLC method was developed and validated using reverse-phase C18 column with retention time and limit of quantification of toferisone being 7.3 min and 20 ng/$m\ell$, respectively. Quantification was performed at 260 nm with chlorphenesin as internal standard. (omitted)