• Journal of the Korean housing association
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• v.17 no.6
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• pp.129-140
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• 2006

The study suggests that to compensate for the variety of inhabitants, flexible housing plans are needed. Furthermore, it proposes the support and infill system for the flexible plan of multi-family housing based on the inhabitants need. The inhabitants' need for the flexible plan of multi-family housing was studied using a survey using models. The survey target was the 100 housewives living in a $126.6m^2$(sold as 45 Pyeong) Apartment in Busan. The characteristics of the respondents were first examined, then to figure out the attitude towards the need for the flexible plan of multi-family housing, the concept and preference for the plan, and the satisfaction level of the current apartment plan were analyzed. To find out the structure of the flexible plan of multi-family housing, the need for the structure, furniture, light, and finishing materials were studied. Lastly, to learn the durability of the construction material, the preferred moving period and the reasons were researched. On the basis of the findings, the support and infill system was suggested.

• Journal of the Korean Institute of Intelligent Systems
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• v.20 no.3
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• pp.375-379
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• 2010

The support vector machine (SVM) has been widely used in variety pattern recognition problems applicable to recommendation systems due to its strong theoretical foundation and excellent empirical successes. However, SVM is sensitive to the presence of outliers since outlier points can have the largest margin loss and play a critical role in determining the decision hyperplane. For robust SVM, we limit the maximum value of margin loss which includes the non-convex optimization problem. Therefore, we proposed the design method of robust SVM using genetic algorithm (GA) which can solve the non-convex optimization problem. To demonstrate the performance of the proposed method, we perform experiments on various databases selected in UCI repository.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.944-946
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• 2014

Localization of a sensor network node using machine learning has been recently studied. It is easy for Support vector machines algorithm to implement in high level language enabling parallelism. In this paper, we realized Support vector machine using python language and built a sensor network cluster with 5 Pi's. We also established a Hadoop software framework to employ MapReduce mechanism. We modified the existing Support vector machine algorithm to fit into the distributed hadoop architecture system for localization of a sensor node. In our experiment, we implemented the test sensor network with a variety of parameters and examined based on proficiency, resource evaluation, and processing time.

• Journal of the Korean Mathematical Society
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• v.52 no.4
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• pp.853-868
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• 2015

Let G be a complex semisimple simply connected linear algebraic group. The main result of this note is to give several equivalent criteria for the untwistedness of the twisted cubes introduced by Grossberg and Karshon. In certain cases arising from representation theory, Grossberg and Karshon obtained a Demazure-type character formula for irreducible G-representations as a sum over lattice points (counted with sign according to a density function) of these twisted cubes. A twisted cube is untwisted when it is a "true" (i.e., closed, convex) polytope; in this case, Grossberg and Karshon's character formula becomes a purely positive formula with no multiplicities, i.e., each lattice point appears precisely once in the formula, with coefficient +1. One of our equivalent conditions for untwistedness is that a certain divisor on the special fiber of a toric degeneration of a Bott-Samelson variety, as constructed by Pasquier, is basepoint-free. We also show that the strict positivity of some of the defining constants for the twisted cube, together with convexity (of its support), is enough to guarantee untwistedness. Finally, in the special case when the twisted cube arises from the representation-theoretic data of $\lambda$ an integral weight and $\underline{w}$ a choice of word decomposition of a Weyl group element, we give two simple necessary conditions for untwistedness which is stated in terms of $\lambda$ and $\underline{w}$.

• Journal of the Korean Society for Precision Engineering
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• v.10 no.3
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• pp.97-106
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• 1993

This is the study on fracture life under the interaction of creep and fatigue. It is difficult to explain the interaction of the creep and fatigue with indication of frequency but the dependency of the time should be considered. The formulation of material varieties causing by interaction of creep and fatigue is required in the accumulative damage method. The strain range partition method requires some of modification corresponding to the changes in temperature and load. All of other method also comprehended with above mentioned problems. Generally, in this field, the variety of stress-strain and suitable parameter is required and connective study between the macro and micro results seems to be insufficient. The linear damage rule is acquiring the support generally but it requires modification in the hgigh temperature instruments. The variety of stress effecting on crack and variety of stress on the metallurgical side are considered to be problems in the future days.

• Journal of Technology Innovation
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• v.15 no.1
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• pp.235-250
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• 2007

The Korean Government has recently been pushing ahead with a variety of programs to support regional innovation. This paper examines whether the variety of regional innovation programs of the government are efficiently managed and effectively functioning in regions. To make the assessment, questionnaire surveys were executed targeting innovation actors in fourteen regions and evaluated the efficiency of government regional programs. Key points of assessment were the appropriateness of the program organization and the efficiency of program management for the effectiveness of program results. It was found that the appropriateness of the program organization and the efficiency of program management were related positively to performance of programs, but the performance of regional innovation programs overall was not high. Some problems were found in program organization and program management such as the overlapping of program objectives and functions, the inadequate synergy among programs, insufficient reflection of the needs of industry in planning, the overlapping investment in facilities and equipment, and low effectiveness of evaluation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.712-715
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• 2008

RUPI-based robot service provides a variety of robot services guaranteeing extensibility and flexibility by communications between heterogeneous robots and servers. While providing robotic services, the guarantee of safety is essential. However, as to support a variety of capability of each node deployed in robotic services, security mechanisms that are suitable for each service must be applied. Also, efficient key management structure must be preceded. Therefore, in this paper, we propose a key management structure suitable for RUPI-based robot environment.

• Korean Journal of Computational Design and Engineering
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• v.7 no.4
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• pp.211-218
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• 2002

Swept volumes have been used in a wide variety of applications, and the literature contains much discussion of methods for computing the swept volumes in many situations. However, the commercially available CAD systems do not support the operations of generating the swept volumes enough to satisfy a variety of users' needs. In this paper, we present a new, simple and efficient algorithm for computing the swept volume of moving a polyhedron in 3-D region. The screw motion is used to describe the sweep motion of a polyhedron, because of its simplicity and computational advantages. The boundary of a swept volume is the result of combining the envelope surfaces and the partial boundaries at the initial and final position of a polyhedron. Some portions of these boundaries are inside the swept volume. We develop the algorithm to remove these interior portions. Then, to implement our algorithm, it is performed to integrate our program with the commercial CAD software, CATIA.

• Proceedings of the PSK Conference
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• 2003.10a
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• pp.89-89
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• 2003

Numerous lead compounds, based on multipurpose privileged structures, can be generated that address a variety of targets from a gene family of interest, irrespective of therapeutic area. Solid-phase organic synthesis has been emerged as a powerful technique in generating combinatorial libraries of small organic molecules useful for drug discovery. Heterocyclic compounds provide scaffolds on which pharmacophores can be arranged to yield potent and selective drugs and a variety of heterocycles have been synthesized on solid support. (omitted)

• Journal of the Korean Institute of Rural Architecture
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• v.21 no.1
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• pp.17-24
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• 2019

This study is to seek for the reuse of vacant houses in the old settlement of urban area, focused on the Andeokbeol in Cheongju city, Korea. The following results were derived. Firstly, the maintenance and reuse methods of vacant houses are made for a number of house type as well as a variety of locational characteristics(flatland, gentle and steep slope) of the Andeokbeol. Secondly, reuse plans of vacant houses are established for a variety of classes such as local residents, artist and youth activist around cultural complex(Cheongju old cigarette factory), and outsiders. Thirdly, owners, users and intermediaries of vacant houses should find a solution to the reuse of them in company with Andeokbeol residents. And also institutional and administrative support measures are established for reuse of vacant houses.