• 한국도서관정보학회지
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• 제38권3호
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• pp.425-454
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• 2007

이 연구는 한국 전통음악 녹음자료의 통일표제 기술원칙에 관한 모형안을 제시한 것이다. 주요부분을 중심으로 그 결과를 요약하여 보면 다음과 같다. 비악곡형식의 경우에는 구국악의 아악은 속명을, 민속악은 일반화된 표제를, 신국악은 작곡자가 최초로 표현한 원표제를 통일표제로 하여 각 괄호 속에 기입하되 식별적 요소를 제외하고는 연주수단 등을 생략한다. 그러나 기악곡의 악곡형식의 경우에는 악곡형식, 연주수단 축차번호, 작품번호, 조, 기타 한정어구나 설명구의 순으로 통일표제를 구성하여 각 괄호 속에 기술한다. 그리고 구국악의 성악곡 중 합창곡의 연주수단은 남성, 여성, 혼성합창으로만, 독창곡은 남성, 여성독창으로만 기술하고, 신국악은 양악의 형식을 따른다. 이 밖에 상이한 작품이 동일한 통일표 제를 가질 경우는 연주수단, 축차번호 조 한정어구나 설명구, 발행사명, 발행년 등을 부가하여 구별하도록 한다.

• Journal of Computational Design and Engineering
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• 제2권3호
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• pp.157-164
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• 2015

This paper discusses an optimization-based approach for the design of a product platform for industrial three-axis linear-type robots, which are widely used for handling objects in manufacturing lines. Since the operational specifications of these robots, such as operation speed, working distance and orientation, weight and shape of loads, etc., will vary for different applications, robotic system vendors must provide various types of robots efficiently and effectively to meet a range of market needs. A promising step toward this goal is the concept of a product platform, in which several key elements are commonly used across a series of products, which can then be customized for individual requirements. However the design of a product platform is more complicated than that of each product, due to the need to optimize the design across many products. This paper proposes an optimization-based fundamental framework toward the design of a product platform for industrial three-axis linear-type robots; this framework allows the solution of a complicated design problem and builds an optimal design method of fundamental features of robot frames that are commonly used for a wide range of robots. In this formulation, some key performance metrics of the robot are estimated by a reducedorder model which is configured with beam theory. A multi-objective optimization problem is formulated to represent the trade-offs among key design parameters using a weighted-sum form for a single product. This formulation is integrated into a mini-max type optimization problem across a series of robots as an optimal design formulation for the product platform. Some case studies of optimal platform design for industrial three-axis linear-type robots are presented to demonstrate the applications of a genetic algorithm to such mathematical models.

• Structural Engineering and Mechanics
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• 제68권2호
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• pp.247-259
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• 2018

In this study (Part I), an advanced empirical formulation was proposed to predict the ultimate strength of initially deflected steel plate subjected to longitudinal compression. An advanced empirical formulation was proposed by adopting Initial Deflection Index (IDI) concept for plate element which is a function of plate slenderness ratio (${\beta}$) and coefficient of initial deflection. In case of initial deflection, buckling mode shape, which is mostly assumed type in the ships and offshore industry, was adopted. For the numerical simulation by ANSYS nonlinear finite element method (NLFEM), with a total of seven hundred 700 plate scenarios, including the combination of one hundred (100) cases of plate slenderness ratios with seven (7) representative initial deflection coefficients, were selected based on obtained probability density distributions of plate element from collected commercial ships. The obtained empirical formulation showed good agreement ($R^2=0.99$) with numerical simulation results. The obtained outcome with proposed procedure will be very useful in predicting the ultimate strength performance of plate element subjected to longitudinal compression.

• Structural Engineering and Mechanics
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• 제67권4호
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• pp.317-326
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• 2018

The iterative decomposition coupling formulation of the precise integration finite element method (FEM) and the time domain boundary element method (TD-BEM) is presented for elstodynamic problems. In the formulation, the FEM node and the BEM node are not required to be coincident on the common interface between FEM and BEM sub-domains, therefore, the FEM and BEM are independently discretized. The force and displacement converting matrices are used to transfer data between FEM and BEM nodes on the common interface between the FEM and BEM sub-domains, to renew the nodal variables in the process of the iterations for the un-coincident FEM node and BEM node. The iterative coupling formulation for elastodynamics in current paper is of high modeling accuracy, due to the semi-analytical solution incorporated in the precise integration finite element method. The decomposition coupling formulation for elastodynamics is verified by examples of a cantilever bar under a Heaviside-type force and a harmonic load.

• 약학회지
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• 제43권4호
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• pp.447-457
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• 1999

The purpose of this study is to prepare the adhesive type patch containing flurbiprofen, and to demonstrate the feasibility of flurbiprofen administration through the intact skin using adhesive type patch preparation. For this purpose, two pressure sensitive adhesives, Polyisobutylene(PIB) and $Gelva^{\circledR}737$, were selected from the chemical grade of polymers, and the adhesive type patches of flurbiprofen were prepared. The release rate of flurbiprofen from the PIB-based adhesive patch was higher than that from $Gelva^{\circledR}737$ based adhesive patch. The release rate of flurbiprofen from the PIB-based A-type patch with 1.0mm, 1.5mm or 2.0mm thicknesses followed the first order kinetics. In the skin permeation study, using male hairless mouse skin, a monophasic skin permeation profile was observed with 1% flurbiprofen loading dose. The inclusion of palmitic acid or SLS(0.25~0.5%) as an enhancer produced a remarkable enhancement in the skin permeation rate of flurbiprofen, and the percentile ratio of drug and enhancer appeared to be important for the effective enhancement. In the in vivo percutaneous absorption study, the plasma concentration of the optimal formulation was significantly (p<0.01) higher than that of the conventional cataplasma ($Bifen^{\circledR}$). These studies demonstrate a good feasibility of flurbiprofen administration through the intact skin using a transdermal patch, and show a possibility of the development of flurbiprofen patches.

• Structural Engineering and Mechanics
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• 제68권1호
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• pp.1-15
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• 2018

In ocean industry, free surface type ART (Anti Roll tank) system has been widely used to suppress the roll motion of floating structures. In those, various obstacles have been devised to obtain the sufficient damping and to enhance the controllability of freely rushing water inside the tank. Most of previous researches have paid on the development of simple mathematical formula for coupled ship-ARTs analysis although other numerical and experimental approaches exist. Little attention has been focused on the use of 3D panel method for preliminary design of free surface type ART despite its advantages in computational time and general capacity for hydrodynamic damping estimation. This study aims at developing a potential theory based hydrodynamic code for the analysis of floating structure with baffled ARTs. The sloshing in baffled tanks is modeled through the linear potential theory with FE discretization and it coupled with hydrodynamic equations of floating structures discretized by BEM and FEM, resulting in direct coupled FE-BE formulation. The general capacity of proposed formulation is emphasized through the coupled hydrodynamic analysis of floating structure and sloshing inside baffled ARTs. In addition, the numerical methods for natural sloshing frequency tuning and estimation of hydrodynamic damping ratio of liquid sloshing in baffled tanks undergoing wave exiting loads are developed through the proposed formulation. In numerical examples, effects of natural frequency tuning and baffle ratios on the maximum and significant roll motions are investigated.

• Korean Journal of Mathematics
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• 제18권4호
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• pp.425-440
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• 2010

Using Green's theorem, elliptic boundary value problems can be converted to boundary integral equations. A numerical methods for boundary integral equations are boundary elementary method(BEM). BEM has advantages over finite element method(FEM) whenever the fundamental solutions are known. Helmholtz type equations arise naturally in many physical applications. In a boundary integral formulation for the exterior Neumann there occurs a hypersingular operator which exhibits a strong singularity like $\frac{1}{|x-y|^3}$ and hence is not an integrable function. In this paper we are going to remove this hypersingularity by reducing the regularity of test functions.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1996년도 The Korean Institute of Navigation 1996년도 한·중 국제학술 심포지움 및 추계학술발표회 논문집
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• pp.111-116
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• 1996

To realize the RF layer of Rubber Ferrite-Air-Solid Ferrite(RF-A-F) that proposed by Y.Naito it is tried to grasp the formulation of composition by varying the ratio of mole and element of Complex Isotropic Ferrite Nix-A0.1-Zn(1-x-0.1)*Fe2O4 As a result it was found that the characteristics of the electromagnetic wave absorber constructed by the selected formulation of compositionin in RF-A-F type were improved.

• 농업과학연구
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• 제37권3호
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• pp.361-365
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• 2010

For the development of more effective insecticides for aphids, including the cotton aphid, Aphis gossypii Glover, control released insecticides were developed and tested as new type of formulation for the cotton aphid. Etofenprox is a target-of-control-released formulation that is toxic to insects with piercing-sucking type mouths including aphids and hoppers. The insecticidal effect of etofenprox is distinguished among others; however, continuance period of the effect of insecticide is shorter than other insecticides. In addition, the control effect of control released etofenprox on the cotton aphid was examined. The results show that control released etofenprox induced no control effects to the cotton aphid within 5 days of treatment. The cotton aphid's population was increased, and their reproduction rate was also high. However, control effect was shown to have very low levels 7 days after treatment, and it increased to higher effect. It is supposed that it is possible to control the cotton aphid using the type of control released etofenprox with a kitosan carrier. It is necessary to develop a more effective carrier type to release more of the insecticidal ingredient on the leaf after spraying.

• 대한조선학회지
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• 제23권2호
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• pp.33-45
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• 1986

In the present paper, the nonlinear analysis of dynamic response of the jacket type offshore structures subject to nonlinear fluid force is performed. Furthermore, several analysis methods, such as quasi-static analysis, Newmark-$\beta$ method and state vector time integration technique, and described and compared with each others in order to investigate the efficiency numerical of the schemes for this kind of nonlinear structural analysis. In the problem formulation, various environmental forces acting on the jacket type offshore structure have been studied and calculated. Particularly, hydrodynamic forces are calculated by using the Morison type formula, which contains the interaction effect between the motion of the structure and the velocity of fluid particles. Also, Stokes' 5th order wave theory and Airy's linear wave theory are used to predict the velocity distribution of the fluid particles. Finally, the nonlinear equation of motion of the structure is obtained by using three-dimensional finite element formulation. Based on the above procedures, two examples, i.e. a single pile and a typical offshore jacket platform, are studied in details.