• 한국광학회:학술대회논문집
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• 한국광학회 2000년도 제11회 정기총회 및 00년 동계학술발표회 논문집
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• pp.65-65
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• 2000

Although it is difficult to predict the future engineers, including optical engineers, must do it on a regular basis. After all, what is the generation of a new optical design, but an attempt to predict what will be needed next year\ulcorner But optical engineers do not consult oracles or look into crystal balls, instead they look at past history, new research, and the trends in technology. This talk will use this approach to look at where optics will take us in this new century. (omitted)

• 건축사
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• 통권484호
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• pp.14-21
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• 2009

Creation village is to house diverse programs to complete the master plan which was established 13 years ago. The project was asked to envision the second stage leap of the college and also house programs related to the specialized creative activities with dormitory. The site is located right next to the main gate, so the project has very strong and symbolic image by its location. Therefore, the project is to carry out the college philosophy in education and also work with ideas of connection and separation with required diverse programs.

• 한국화재소방학회논문지
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• 제3권2호
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• pp.21-26
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• 1989

The overpopulation phenomenon and complicated various daily life in the city can't presuppose a loss of lives and properties by fire as in today. Especially, mutual relation of buildings and road of the urban preventive dimenson share with important roles and function. This thesis analyses next two articles. First, this study examines improvement counterplan by urban preventive demention centering around theory. Second: as a case study through statistics of fire is Seoul Namdaemun market propose improvement plan in urban preventive dimension.

• 전자통신동향분석
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• 제21권4호통권100호
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• pp.97-106
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• 2006

이동통신과 인터넷 사용에 대한 사용자의 요구는 집이나 회사 등 도심지역에 국한되지 않고 언제 어디서나 그 사용을 요구하고 있다. 하지만 이런 요구를 충족시키기에 지상망의 제한된 서비스 영역은 그 한계를 가진다. 이에 반해 위성은 광역 서비스가 가능하여 이런 욕구를 충족시키기에 좋은 장점을 가진다. 이런 특징에 기반하여 유럽에서는 현재 열차, 항공기 및 선박에 이동 인터넷 서비스 지원을 위한 연구가 활발히 이루어지고 있으며 이에 대한 동향을 알아보고자 한다. 동시에 지상망이 미치지 않는 외각지역에 대해 위성을 이용한 3G 서비스와 함께 MBMS 제공을 위한 연구에 대해서도 알아보고자 한다.

• 충청수학회지
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• 제21권2호
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• pp.209-221
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• 2008

In the present paper, first we define a Douglas space of the second kind of a Finsler space with an (${\alpha},{\beta}$)-metric. Next we find the conditions that the Finsler space with an (${\alpha},{\beta}$)-metric be a Douglas space of the second kind and the Finsler space with a Matsumoto metric be a Douglas space of the second kind.

• 산업경영시스템학회지
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• 제21권45호
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• pp.57-65
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• 1998

This paper addresses the data classification using the induction of decision trees. A weakness of other techniques of induction of decision trees is that decision trees are too large because they construct decision trees until leaf nodes have a single class. Our study include both overcoming this weakness and constructing decision trees which is small and accurate. First, we construct the decision trees using classification threshold and exception threshold in construction stage. Next, we present two stage pruning method using classification threshold and reduced error pruning in pruning stage. Empirical results show that our method obtain the decision trees which is accurate and small.

• Biomolecules & Therapeutics
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• 제22권2호
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• pp.122-128
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• 2014

The stiffness of cancer cells is attributable to intermediate filaments such as keratin. Perinuclear reorganization via phosphorylation of specific serine residue in keratin is implicated in the deformability of metastatic cancer cells including the human pancreatic carcinoma cell line (PANC-1). 12-O-Tetradecanoylphorbol-13-acetate (TPA) is a potent tumor promoter and protein kinase C (PKC) activator. However, its effects on phosphorylation and reorganization of keratin 8 (K8) are not well known. Therefore, we examined the underlying mechanism and effect of TPA on K8 phosphorylation and reorganization. TPA induced phosphorylation and reorganization of K8 and transglutaminase-2 (Tgase-2) expression in a time- and dose-dependent manner in PANC-1 cells. These effects peaked after 45 min and 100 nM of TPA treatment. We next investigated, using cystamine (CTM), Tgase inhibitor, and Tgase-2 gene silencing, Tgase-2's possible involvement in TPA-induced K8 phosphorylation and reorganization. We found that Tgase-2 gene silencing inhibited K8 phosphorylation and reorganization in PANC-1 cells. Tgase-2 gene silencing, we additionally discovered, suppressed TPA-induced migration of PANC-1 cells and Tgase-2 overexpression induced migration of PANC-1 cells. Overall, these results suggested that TPA induced K8 phosphorylation and reorganization via Tgase-2 expression in PANC-1 cells.

• 한국환경과학회지
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• 제21권8호
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• pp.909-929
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• 2012

It is an after-school material for elementary school student based on STEAM education which has a theme of water pollution as a global issue. First of all, we take a look at various ways of measuring water pollution and among them, we include experiment for student to know about the water pollution by using indicator organisms. Next, we examine how some elements in our daily life affect on water and provide class with systematically technological and engineering solution. With this text book, we let the student recognize environmental problem and seek for the solution about it. Therefore, it helps student to connect with stream of thought.

• 대한기계학회논문집A
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• 제21권7호
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• pp.1106-1115
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• 1997

A method of obtaining a control input to reduce residual vibration was developed for nonlinear time-varying systems moving along pre-determined two dimensional paths. First, the nonlinear system equation was solved with nominal input then linearized by nominal response which is defined at equilibrium point. Next an additional input can be obtained by solving the linearized equation that should satisfied the required boundary conditions. Residual vibration reduction was experimentally verified by applying the control input, which is sum of nominal and additional input, to a moving pendulum whose length is varying time.

• 세라미스트
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• 제21권3호
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• pp.283-292
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• 2018

Here, we introduce various type of inorganic nanostructure synthesized with functional nanoparticles and silica. From two decades ago, functional inorganic nanoparticles have been synthesized and highlighted, now we moved to next level of wet-chemical synthesis. By integrating functional nanoparticles with silica, we were able to synthesize multi-functional nanostructure, which expand the applications of nanoparticles to catalyst, drug carrier, sensors. In this context, silica has been spotlighted due to its versatility. Silica has highly biocompatible, relatively transparent and stable under harsh conditions. Thus it can be used as good supporter to synthesize complex multi-functional nanostructure when mixed with other functional nanoparticles. A various shape of complex nanostructures have been synthesized including core-shell type, yolk-shell type and janus type etc. In this paper, we have described the purposes of synthesizing silica noncomplex and various case studies for biomedical applications and self-assembly.