• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.1570_1571
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• 2009

본 논문에서는 초고주파를 이용하여 하지정맥류(Varicose vein)의 초기증상인 모세혈관 확장증(Telangiectasia)을 치료하는 데에 목적을 두었다. 유전율 차이에 따라 전자파(Electromagnetic waves)를 흡수하는 양이 다르다는 것을 전제하에 다리 모델링에 필요한 피부, 혈관, 혈액, 피하조직의 유전율을 구하였고, 혈관과 피부의 유전율에 비해 혈액의 유전율이 높다는 것을 통해 다른 조직에 비해 혈액의 전자파 흡수율이 높다는 것을 확인하였다. 피부의 구조와 유전율을 이용하여 모델링 한 후, 시뮬레이션을 통해 SAR(Specific Absorption rate)분포를 확인하였다.

• Biomolecules & Therapeutics
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• v.15 no.2
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• pp.89-94
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• 2007

Ginseng is a widely-used alternative medicine for the treatment of cancer, diabetes, and cardiovascular diseases. Active components of P. ginseng, absorbed through gastrointestinal tract are the fermented ginsenosides by intestinal microorganisms. In the present study, we investigated the inhibitory effects of fermented ginseng with bifidobacterium (FGb) on the angiogenesis by analyzing in vitro tube formation and invasion assay using human umbilical vein endothelial cells (HUVECs), and in vivo angiogenesis using chick chorioallantoic membrane (CAM) assay. Treatment with FGb inhibited tube-like structure formation in a concentration-dependent manner. In addition, FGb significantly suppressed HUVEC invasion through Matrigel. Moreover, FGb dosedependently inhibited VEGF-induced angiogenesis in a CAM assay. These results suggest that FGb is a valuable anti-angiogenic remedy.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.5
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• pp.164-170
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• 2003

To ensure the reliability of DVDR-P and DVD-ROM, it is imperative to remedy the unrecoverable creep deformation and/or relaxation of the holding force of an optical disc holder. To predict the deformation of an optical disc holder, a deformation analysis of an 80 mm optical disc holder considering the creep characteristics of 3 plastic materials has been conducted. Subsequently, the results by this Finite Element Analysis (FEA) are experimentally verified. A disc holder inserted in a cartridge case is kept in a chamber of $60^{\circ}C$ with 90 % humidity for 24 hours. The arm span and the holding force of the disc holder are measured after being left for another 24 successive hours at a room temperature and under normal humidity. The predicted results by FEA are in good agreement with experimentally measured values.

• Korean Journal of Pharmacognosy
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• v.38 no.4
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• pp.334-338
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• 2007

Roots of Rumex crispus (Rc) (Polygonaceae) has been used as therapeutic agents of acute and chronic cutaneous diseases, cathartics, fever and jaundice in folk medicines. Recently, Seeds of Rc has known as a digestive, an anticancer agent and a remedy of acute hepatitis, among many traditional folk medicines. So far it isn't reported about pharmacological effects of Rumecis Semen. The present study describes the preliminary evaluations of biological activities, anti-inflammatory activity (AA, Carrageenan) analgesic activity (writhing test), and hepatoprotective activities ($CCl_4$), of its methanol extract, ethyl acetate fraction and butanol fraction. Among them butanol fraction showed the highest activity in analgesic acivity.

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.2
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• pp.355-358
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• 2004

Jang Nam's opinion is that Yin-Yang of pathogenic factors change following to the Yin and Yang of human body. As the pathogenic factors injure the human body, the conditions of diseases become different to the inborn constitution of human. Therefore the main principles of remedy set up the diagnosis on the YINㆍYANG & the strengthㆍweakness of constitution. This diagnotic points are body formal distinction, flesh hardness and softness, face color and form, skin color. Moreover he arranges the 4 type of the hole-body constitution based on the Seop-Gye's the guide of clinical differentiation of syndromes(臨證指南); Yang-Strength and Yin-weakness(陽盛陰虛), Yin ㆍYang-strength(陰陽具盛), Yin-Strength and Yang-weakness(陰盛陽虛), YinㆍYang-weakness(陰陽兩虛).

• Journal of Electrical Engineering and Technology
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• v.12 no.5
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• pp.1991-2000
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• 2017

This paper presents a compensative microstepping based position control with passive nonlinear adaptive observer for permanent magnet stepper motor. Due to the resistance uncertainties, a position error exists in the steady-state, and a ripple of position error appears during operation. The compensative microstepping is proposed to remedy this problem. The nonlinear controller guarantees the desired currents. The passive nonlinear adaptive observer is designed to estimate the phase resistances and the velocity. The closed-loop stability is proven using input to state stability. Simulation results show that the position error in the steady-state is removed by the proposed method if the persistent excitation conditions are satisfied. Furthermore, the position ripple is reduced, and the Lissajou curve of the phase currents is a circle.

• The Journal of the Korean life insurance medical association
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• v.27 no.1
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• pp.6-8
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• 2008

Korean life insurance medical association's public periodical, the Journal of Korean Life Insurance Medical association (J Kor Lif Ins Med Assoc, JKLIMA) is now published $27^{th}$ issue. From this issue there are some changes of the journal than before. It is because general requirements for medical journals from the Korean association of medical journals editors. It can be remedy for the development of JKLIMA, in terms of academicism. First, the style of the manuscripts, medical opinion of insurance administration is added. This style of manuscript needs not keep the format of original research article such as background, materials, results, and discussion. Secondly, It is emphasized that submitted manuscripts must be reviewed by peer reviewers. Thirdly, we will make an effort to globalization of our journal. Lastly the publication period has been changed from annual to biannual. The publication date will be at March 31st and September 30th every year.

• Structural Engineering and Mechanics
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• v.2 no.1
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• pp.49-62
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• 1994

Based on the transfer matrix approach and integral transforms, a solution method is developed for the stress analysis of axisymmetrically loaded transversely isotropic elastic media with generalized interlayer and support conditions. Transfer functions (Green's functions in the transformed domain) are obtained in explicit integral form. For several problems of practical interest with different loading and support conditions, solutions are worked out in detail. For the inversion operation, an efficient technique is introduced to remedy the slow convergence of numerical integrals involving oscillating functions. Several illustrative examples are considered and numerical results are presented.

• Journal of Information Technology Services
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• v.8 no.2
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• pp.43-70
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• 2009

As software development and maintenance cost increase quickly, information systems managers are more concerned about how to effectively manage software cost. To estimate the software development cost, most public institutes of Korea use the software cost estimation standard established by the government. Unfortunately, the accuracy of the estimation derived from the standard has not been satisfactory in spite of repetitive modifications made to improve it. One of the major reasons for the inaccuracy is that the standard has too small a number of cost adjustment factors to reflect the various characteristics of a software development project. To remedy this problem, we propose new cost adjustment factors which can be incorporated into the standard and are important to enhance the estimation accuracy, based on the analysis of several well-known software estimation models. Furthermore, by applying the proposed model to real world software projects, we show that the proposed model can produce more accurate estimates than the current standard.

• Communications of the Korean Mathematical Society
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• v.32 no.3
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• pp.765-778
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• 2017

Finding an initial feasible solution on the central path is the main difficulty of feasible interior-point methods. Although, some algorithms have been suggested to remedy this difficulty, many practical implementations often do not use perfectly centered starting points. Therefore, it is worth to analyze the case that the starting point is not exactly on the central path. In this paper, we propose a weighted-path following interior-point algorithm for solving the Cartesian $P_{\ast}({\kappa})$-linear complementarity problems (LCPs) over symmetric cones. The convergence analysis of the algorithm is shown and it is proved that the algorithm terminates after at most $O\((1+4{\kappa}){\sqrt{r}}{\log}{\frac{x^0{\diamond}s^0}{\varepsilon}}\)$ iterations.