• 대한치과보철학회지
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• 제42권2호
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• pp.125-132
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• 2004

Statements of problem: All ceramic fixed partial denture cores can be made by the slip casting method and the advanced alumina tape method. The fracture resistance of these core connector areas is relatively low. Purpose: The purpose of this study is to standardize the appropriate volumetric figure and location of the connectors in the alumina core fabricated in alumina tape to be used in fixed partial dentures by way of topology optimization. Material and method: A maxillary anterior three-unit bridge alumina core with teeth form and surrounding periodontal apparatus model was used to ultimately design the most structurally rigid form of the connector. Loadings from a $0^{\circ}$, $45^{\circ}$ and $60^{\circ}$ to the axis of each tooth were applied and analyzed with the 3-D finite element analysis method. Using the results from these experiments, the topology optimization was applied and the optimal reinforcement layout of connector was obtained and the detail shape in the fixed partial denture core was designed. Results: The modified prosthesis with the form of a bulk in the lower lingual surface of the connector in the event, reduced the stress concentration up to 20% in the 3-D FEA. Conclusion: The formation of a bulk in the lower lingual connector area of an alumina core for a fixed partial denture decreases the stress to a clinically favorable measure but does not harm the esthetic point of view. This result illustrates the possibility of clinical application of the modified form designed by the topology optimization method.

• Animal cells and systems
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• 제1권2호
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• pp.247-257
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• 1997

Genetic and morphological variations of Korean Hynobius leechii were surveyed. Starch gel electrophoresis was used to study genetic variation at 23 loci. H. leechii is genetically divided into three groups, each of which is named as Form-A, Form-B, and Form-C. These forms are clearly separated with 4-5 fixed or nearly fixed allelic differences. At a sympatry near Jangseong, Jollanam-do, a significant deviation from random mating between Form-A and Form-B was observed. Therefore, they are considered as two distinct taxi of specific rank. Form-A is widely distributed in the inland of Korea, whereas Form-B is distributed in the islands or near the coastal regions of Western and Southern Korea. Form-B had, in addition, a significant morphological difference from Form-A. On the other hand, Form-C was restricted to an area near Kori atomic power plant, Kyongsangnam-do, and the genetic similarities between this form and Form-A and Form-B were 0.742 and 0.736, respectively. Moreover, Form-C had a unique color pattern, short body and small coccyx. Thus, it seems reasonable to assign this form as another new species.

• 대한안전경영과학회지
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• 제16권3호
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• pp.231-237
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• 2014

Construction of the external wall framing using construction Gang-Form withstand the load of a full lift safety is very important in lifting rings can be a lot of Gang-Form is now fixed in the manner that you are welding and applied, but this study is based on the safety of the lifting ring to seek improvements were bolt type fixing method applied to the bonding type were part of the lifting ring in a manner fixed to the concrete surface and was applied in consideration of safety.

• 충청수학회지
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• 제23권4호
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• pp.599-608
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• 2010

In this paper, we introduce the concept of generalized weak contractivity for set-valued maps defined on quasi metric spaces. We analyze the existence of fixed points for generalized weakly contractive set-valued maps. And we have Nadler's fixed point theorem and Banach's fixed point theorem in quasi metric spaces. We investigate the convergene of iterate schem of the form $x_{n+1}{\in}Fx_n$ with error estimates.

• 한국시조학회지:시조학논총
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• 제19권1호
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• pp.63-84
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• 2003

시조는 한국인의 주체성과 정체성을 가장 잘 지닌 우리 민족의 정형시라고 할 수 있다. 21세기에도 시조가 과거처럼 우리 문화에서 한국의 정형시로 주도적인 역할을 계속 유지할 수 있을까\ulcorner 이러한 시조의 존립기반에 대한 탐구를 확실하게 진행하기 위해서 본고는 첫째로 민족문화로서 시조가 지니고 있는 정체성을 살펴보았고, 둘째로 국어교육으로서 시조가 지닌 역사적 지평인 주체성을 수행시키는 정책과 그 학습현장을 살펴보았으며, 셋째로는 창작되는 현대시조가 지닌 현대시로서의 독창성을 찾아내어서 각각 그것들이 지니고 있는 기본적인 기능을 규명하고자 했다. 따라서 이 연구는 21세기 시조문학에 대한 새로운 시각을 열어주고 그 존재기반을 좀더 구체적으로 분석하여 시조에 관한 실용적 가치와 다양한 이해의 길을 온당하게 정립할 수 있는 토대를 마련하는데 그 목적이 있다.

• Architectural research
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• 제16권4호
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• pp.157-166
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• 2014

This research investigates the design process of free-form architecture to understand the design strategy and changing factors during the development phase and the cause for them. It is aimed to foresee the changing factors from the design process and to reduce design changes. It analyzes the design changes of free-form architecture based on projects with finalized documentation or under construction in South Korea. Many free-form shapes of the free-form architectures have to be adjusted to rigid-form in order to satisfy function and be economical to build. The research finds three patterns in design changes. First, from the factors for design changes: function, constructability, design, program add/subtract, efficiency, circulation; Function and Constructability are the higher factors compared with the rest. The two are the design changes suitable for actual usage and cost savings. Second, each project has different predominant factors for design changes as the degree of free-form is different. Contrary to initial expectation, the greater the degrees of free-form of the competition scheme, the higher the rate of Function among the factors for design changes. Constructability is higher when the degree of the free-form is less than others. It means that the lower the degree of the free-form, the more properly planned the space of the building is. Last, Constructability of free-form architecture is considered during the earlier design phase than definite-form, one by which the design changes by comparing 'Before fixed Space Program' (BSP) and 'After fixed Space Program' (ASP) design changes. The research would be helpful as a reference for setting up competition guidelines to reduce trial and error during the design process.

• 패션비즈니스
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• 제14권2호
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• pp.95-109
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• 2010

The goal of this dissertation is to analyze the formative characteristic and the aesthetic values of Romantic style. To attain the goal of this study, the selected objects are the Romantic styles that were prevalent from the 1830s to the 1880s. The methodology for this study consists of literary research, aesthetics, dress and case study based upon the analysis of the 19th century dress. Based upon the theoretical study, two results are derived from the analysis of Romantic style in $19^{th}$ century dress. First, the formative characteristics of Romantic style dress are suppression of body, fixed form, volume, and ornamentation. The suppression of body is embodied by two ways. One is tightening body parts, such as the off-the-shoulder line and the corset, and the other is applying weights on body through the wearing of layers of petticoat, crinoline and bustle. The characteristic of the fixed form created the fixed silhouettes of women's dress, for example, an X-silhouette formed with wide shoulders created by big puffed sleeves, narrow waist by corset, and wide hemline of voluminous skirt and petticoats. In addition to the X-silhouette, the bustle style created fixed h-silhouette. Volume in the women's dress were visually expressed by big puffed sleeves, a huge skirt and petticoat made with gathers, pleats and flounces, crinolines and a bustle. Ornamentation was used to express an elegant and fantastic style not only by using luxurious materials in various colors and patterns, but also by applying sumptuous details and trimmings. Second, the aesthetic values of Romantic style dress are subordination, sensuality, and maternity. Women's dress of the 19th century not only restricted free movement and symbolized men's wealth and status, but also was used as an important tool for seducing men by exposing and accentuating the sexual body, thus becoming a symbol of fertility as a metaphor of pregnancy and uterus. These aesthetic values represented in dress incorporated the contemporary requirements of women of the time.

• Journal of the Korean Statistical Society
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• 제27권3호
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• pp.305-318
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• 1998

Smoothing tests based on an L$_2$ error between a truncated courier series estimator and a true function have shown good powers for a wide class of alternatives, These tests have the same form of the Neyman smooth test whose performance depends on the selected order, a basis, the farm of estimators. We construct flexible data driven Neyman smooth tests by changing a basis, combining model selection criteria and different series estimators. A simulation study shows that the generalized Neyman smooth test with the best basis provides good power for a wider class of alternatives compared with other data driven Neyman smooth tests based on a fixed form of estimator, a fixed basis and a fixed criterion.

• Industrial Engineering and Management Systems
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• 제11권2호
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• pp.183-187
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• 2012

In this paper, we study the fixed charge transportation problem with uncertain variables. The fixed charge transportation problem has two kinds of costs: direct cost and fixed charge. The direct cost is the cost associated with each source-destination pair, and the fixed charge occurs when the transportation activity takes place in the corresponding source-destination pair. The uncertain fixed charge transportation problem is modeled on the basis of uncertainty theory. According to inverse uncertainty distribution, the model can be transformed into a deterministic form. Finally, in order to solve the uncertain fixed charge transportation problem, a numerical example is given to show the application of the model and algorithm.

• Advances in environmental research
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• 제7권1호
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• pp.29-37
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• 2018

A simple mathematical model for predicting fixed bed adsorption dynamics is described. The model is characterized by a linear adsorption isotherm and a linear driving force expression for mass transfer. Its analytic solution can be approximated with an algebraic equation in closed form which is easily evaluated by spreadsheet computation. To demonstrate one application of the fixed bed model, a previously published adsorption system is used as a case study in this work. The adsorption system examined here describes chromium breakthrough in a fixed bed adsorber packed with imidazole functionalized adsorbent particles and is characterized by a nonlinear adsorption isotherm. However, the equilibrium behavior of the fixed bed adsorber is in essence governed by a linear adsorption isotherm due to the use of a low influent chromium concentration. It is shown that chromium breakthrough is predicted reasonably well by the fixed bed model. The model's parameters can be easily extracted from independent batch experiments. The proposed modeling approach is very simple and rapid, and only Excel is used for computation.