• 대한수학회보
• /
• 제51권2호
• /
• pp.479-499
• /
• 2014

In this paper, we propose new iteration methods for finding a common point of the solution set of a pseudomonotone equilibrium problem and the solution set of a monotone equilibrium problem. The methods are based on both the extragradient-type method and the viscosity approximation method. We obtain weak convergence theorems for the sequences generated by these methods in a real Hilbert space.

• 대한수학회보
• /
• 제52권5호
• /
• pp.1669-1681
• /
• 2015

In this paper, we provide semi-convergence results of the parameterized inexact Uzawa method with singular preconditioners for solving singular saddle point problems. We also provide numerical experiments to examine the effectiveness of the parameterized inexact Uzawa method with singular preconditioners.

• 한국미생물생명공학회:학술대회논문집
• /
• 한국미생물생명공학회 1977년도 추계학술발표회 및 특별 강연초록
• /
• pp.192-193
• /
• 1977

It is certainly a difficult work to find out novel-type "practical" antibiotic from natural sources. In fact, chemically modified antibiotics, such as synthetic penicillins, cephalosporins, derivatives of tetracycline, lincomycin, rifamycin and kanamycin are most widely used in medical practice at present. However, as the possibility of success gained by chemical modification is limited, it would be the buty of our applied microbiologists to offer novel antibiotics to chemist and physician without interruption. In this lecture, some practical problems in new antibiotic research will be discussed.(중략)

• 대한치과보존학회:학술대회논문집
• /
• 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
• /
• pp.583.2-583
• /
• 2001

In these days, as the patients requirements on ethetics are getting greater, so the restorative materials which match well with natural teeth colors are being developed. One of those materials is the composite resin. When we fill the composite resin into the prepared cavity, it makes some clinical problems because it shrinks during the polymerization. To resolve these problems, first we must have sufficient understandings on the polymerization of composite resin.(omitted)

• 한국수학교육학회지시리즈E:수학교육논문집
• /
• 제22권4호
• /
• pp.399-416
• /
• 2008

우리는 제7차 교육과정에서 생산된 많은 문제점들을 대학이 어떻게 수용해야하는지에 대한 고민을 가져 왔다. 이러한 장면에 우리가 유연하게 대학이 대처하고 시대적 조류에 맞는 교육과정의 운용을 위한 방법을 제시한다.

• Kyungpook Mathematical Journal
• /
• 제59권1호
• /
• pp.13-22
• /
• 2019

This paper presents a symbolic method for solving a boundary value problem with inhomogeneous Stieltjes boundary conditions over integro-differential algebras. The proposed symbolic method includes computing the Green's operator as well as the Green's function of the given problem. Examples are presented to illustrate the proposed symbolic method.

• Journal of applied mathematics & informatics
• /
• 제38권1_2호
• /
• pp.113-132
• /
• 2020

In this paper, a class of linear second order singularly perturbed delay differential turning point problems containing a small delay (or negative shift) on the reaction term and when the solution of the problem exhibits twin boundary layers are examined. A hybrid finite difference scheme on an appropriate piecewise-uniform Shishkin mesh is constructed to discretize the problem. We proved that the method is almost second order ε-uniformly convergent in the maximum norm. Numerical experiments are considered to illustrate the theoretical results.

• Nuclear Engineering and Technology
• /
• 제52권10호
• /
• pp.2306-2312
• /
• 2020

Here we report on the first results of sensitivity evaluation of the gadolinium-aluminum-gallium- garnet (GAGG) scintillation detector with SiPM readout to fast and slow neutrons and, to the natural background and Co-60 γ-radiation as well. Data on sensitivity were obtained using certified dosimetry benches, so it can be utilized in the calculation of detection limits of neutron flux with such type of detectors. It was concluded that use of GAGG scintillator has a good prospect for neutron monitoring in different parts of nuclear research reactors and power plants.

• International Journal of Air-Conditioning and Refrigeration
• /
• 제15권4호
• /
• pp.182-190
• /
• 2007

Refrigeration and air-conditioning equipments are indispensable products in this civilized society. However, discharged refrigerants used in the equipments and exhausted carbon dioxide to drive the refrigeration and air-conditioning equipments are related to serious environmental problems and energy problems. Especially, the destroyed ozonosphere by the discharged refrigerants and the increased normal temperature by carbon dioxide and fluorocarbon refrigerants (green house gases) are sounded as serious global problems. For alleviating these problems, environmental-friendly refrigeration and air-conditioning equipments must be developed and will spread soon. To develop new equipment, a suitable refrigerant for each usage must be presented. In this paper, the current state of refrigerants was introduced. And, thermophysical properties of the refrigerants were introduced briefly. From the properties, the refrigerants and refrigeration cycles are promising to be used in the future, were proposed

• 비교문화연구
• /
• 제33권
• /
• pp.143-169
• /
• 2013

Recently, because of the danger and damages that following the steady development of scientific technologies, natural science is faced with many humane and ethical problems. So it is asserted the interdisciplinary with social and human science. However, it comes commonly that the ethical issues such as world view and one's view of life caused the development of sociology, especially development of the market economy. But in many cases, the interdisciplinary can be useful for widen the view of scholars. The interdisciplinary is actually connected with the problems of philosophy, and located in that domain. In this case, this is noticed as a model to the philosophers in 18th century, especially Denis Diderot. Diderot published De $l^{\prime}interpr{\acute{e}}tation$ de la nature during editing the Encyclopedia, from there he picked out the contents from piles of documents of Encyclopedia. Even though the contents or opinions of De $l^{\prime}interpr{\acute{e}}tation$ de la nature are inaccuracy or erroneous, it shows that how human-social science and natural science encountered. Diderot studied mathematics and then Diderot accepted to the natural science proposal, he approaches philosophy with translate English books to the French. Next he understood natural science by reading Buffon and Maupertuis, and during working for Encyclopedia, he possessed his knowledge that he can claim his opinion to other scholars. However in this De $l^{\prime}interpr{\acute{e}}tation$ de la nature, Diderot who sometimes rebutted other scholars' theory and demonstration, tried to build a philosophy on metaphysics in order to it was important for himself that he imposed the methods of science and importance of experience. Anyhow, this De $l^{\prime}interpr{\acute{e}}tation$ de la nature cause consider the recognition of Diderot in the field of natural science, and is suggested as a model about his Nature. This mean that it is an expression of his philosophy, and the content is found from natural philosophy and empirical philosophy. Like giving these attache the importance of method study for science and technique, these are targeted the promotion of popularization of natural-science and scientific-technology. Also it advocates fulfilling from reasonable philosophy to empirical philosophy. Therefore, the philosophy which was speculative and abstracted became his philosophy which was writing the meaning, as waiting the discovery of science. And at that time, the humanities made interdisciplinary with natural science.