• Proceedings of the Korean Operations and Management Science Society Conference
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• 1996.10a
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• pp.199-202
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• 1996

Although numerous studies demonstrate that one technique outperforms the others for a given data set, there is often no way to tell a priori which of these techniques will be most effective to solve a specific problem. Alternatively, it has been suggested that a better approach to classification problem might be to integrate several different forecasting techniques by combining their results. The issues of interest are how to integrate different modeling techniques to increase the prediction performance. This paper proposes the post-model integration method, which means integration is performed after individual techniques produce their own outputs, by finding the best combination of the results of each method. To get the optimal or near optimal combination of different prediction techniques. Genetic Algorithms (GAs) are applied, which are particularly suitable for multi-parameter optimization problems with an objective function subject to numerous hard and soft constraints. This study applied three individual classification techniques (Discriminant analysis, Logit and Neural Networks) as base models to the corporate failure prediction context. Results of composite prediction were compared to the individual models. Preliminary results suggests that the use of integrated methods will offer improved performance in business classification problems.

• Structural Engineering and Mechanics
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• v.38 no.4
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• pp.429-441
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• 2011

In large-scale problem, a huge size of computational resources is needed for a reliable solution which represents the detailed description of dynamic behavior. Recently, eigenvalue reduction schemes have been considered as important technique to resolve computational resource problems. In addition, the efforts to advance an efficiency of reduction scheme leads to the development of the multi-level system condensation (MLSC) which is initially based on the two-level condensation scheme (TLCS). This scheme was proposed for approximating the lower eigenmodes which represent the global behavior of the structures through the element-level energy estimation. The MLSC combines the multi-level sub-structuring scheme with the previous TLCS for enhancement of efficiency which is related to computer memory and computing time. The present study focuses on the implementation of the MLSC on the direct time response analysis and the frequency response analysis of structural dynamic problems. For the transient time response analysis, the MLSC is combined with the Newmark's time integration scheme. Numerical examples demonstrate the efficiency of the proposed method.

• International Journal of Precision Engineering and Manufacturing
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• v.6 no.3
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• pp.24-28
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• 2005

Stress state of chip formation zone is one of the main problems in metal cutting mechanics. In two-dimensional case this process is usually considered as consistent shears of work material along one of several shear surfaces, separating chip from workpiece. These shear planes are assumed to be trajectories of maximum shear stress forming corresponding slip-line field. This paper suggests a new approach to the constriction of slip-line field, which implies uniform compression in chip formation zone. Based on the given model it has been found that imaginary shear line in orthogonal cutting is close to the trajectory of maximum normal stress and the problem about its determination has been considered as well. It has been shown that there is a second central slip-line field inside chip, which corresponds well to experimental data about stress distribution on tool rake face and tool-chip contact length. The suggested model would be useful in understanding mechanistic problems in machining.

• Journal of Agricultural Extension & Community Development
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• v.22 no.4
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• pp.405-421
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• 2015

Agro-fishing villages of agriculture and fishery are suffering deepening gap with urban areas due to depreciation from their products market opening pressure. They are facing problems of decreasing and aging population, poor settlement environment, etc. and losing their vitality for their low productivity and lack of young labor force. These issues of agro-fishing villages of agriculture and fishery are divided in so various items and classes that it is plausible to approach in a way to connect each issue in a small frame of each by selecting sub topics according to each item and each class rather than to solve the issues in a large frame. Chungchungnam-do is approaching the issues through 3 agro innovations(agro fishery, agro fishing villages, agro fishing people) in local government level and Durae enterprises are solving local problems through the self supporting residents' community business by utilizing local resources. This study is to draw clues and solutions to vitalize agro fishery villages through community businesses by detailed reviews and research on cases of Durae enterprises' characteristics and their vitalizations and provide a new alternative plan to agro fishery villages losing their vitality and demolishing their communities.

• Journal of the Korea Society of Computer and Information
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• v.12 no.2 s.46
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• pp.307-314
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• 2007

FDS (Franchise Distributed System) which can efficiently control and manage the resources like food, liquid and services is required in many distributed system related areas like SCM (Supply Chaining Management) and ECR (Efficient Consumer Response). But, established system, such as used PC and Internet or CTI (Computer Telephony Integration) that need other equipment and expenses. And these have many problems, as voices record or recognition, not spreaded. To solve those problems, we design and implemented Web Card Checker for Franchise Distribution. Our system used card checker machine, not make additions, which can order raw materials like SCM as well as managed distributed processes.

• School Mathematics
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• v.11 no.2
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• pp.281-299
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• 2009

In this paper, we show how dynamic manipulation environments can be integrated in the mathematics curriculum by presenting some pedagogical tasks manufactured by dynamic manipulation. These examples are composed to produce meaningful definitions through inductive experiments, to strengthen the thinking ability on continuity through the visualization, to make mathematics through investigation and finding, and to strengthen the ability of posing and generalizing problems. Through these examples students can observe the process of how mathematics is being invented, and they can experience how to solve mathematical problems using physical experiments in dynamic manipulation environments. When integration of dynamic manipulation into the teaching and learning of mathematics is applied, some difficulties can come out. To resolve such difficulties, a teacher must play the role of a co-worker of students in addition to the role of a scaffolder, coach, or close listener.

• Journal of the Korea Society of Computer and Information
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• v.13 no.1
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• pp.213-218
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• 2008

Through the development of computer and multimedia, many different kinds of theories about instructional method are presented. Especially, many lectures in associated with E-learning are done. In mathematics teaching, mathematica-algebra system lecturing, computer and Maple Matlab lecturing etc, are accomplished. There are many controversies among educators in problems originated by computer teaching. In this paper, we going to make a research about problems which are caused by mathematics computer-based education and present a desirable way of computer based education through studying comprehension rate and application ability among learner who uses omputer learning and other learner who uses exiting blackboard-based learning with statistical analysis after sampling test

• Korean Journal of Social Welfare Studies
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• no.36
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• pp.5-28
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• 2008

The purpose of this study is to review recent trends and major emerging problems and explore alternatives of Korean social welfare service policies. The concerns on social welfare service are triggered by the issues of rapid getting lower birth rate and severe growing rate of old people. These concerns resulted in the expansions of social welfare services. But Korean social welfare service systems are not prepared for these expansions. Presenting problems are disconnection between state and local governments, not securing minimum standards on accessibility and service provision, excessive concerns on making caring jobs and lacking in securing of safety and rights of vulnerable service users. As alternatives, this study proposes the integration of market approaches which can facilitate service user's choice and anti-market schemes which could act against the negative effects of market approaches.

• Analyses & Alternatives
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• v.7 no.1
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• pp.201-227
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• 2023

The purpose of this study is to examine how France became a representative country for far-right European populism, despite its tradition of tolerance. To achieve this goal, we examine, first, how the concept of tolerance developed in France after the 16th century. Through this process, we find that within the political system, the tolerance of the liberal tradition met with universalism, a republican value, and developed into an 'institutional tolerance' that allowed 'differences' from an authoritarian perspective rather than on an equal level. This 'assimilation' policy, reflecting a 'patriarchal' and 'oppressive' institutional tolerance, formed the keynote of the immigration policy of the 20th century, which continued until the 1980s, and shows that the French government did not take practical steps for the social integration of immigrant groups under the republican universal value that does not allow 'differences.' The government came up with an 'integration' immigration policy that embraces cultural 'differences' only after encountering problems with immigrant groups. However, this was not enough to calm the antipathy towards immigrants in French society and the discontent of immigrants in French society. Also, universalism, a republican value with deep roots in France, prevented the French immigration policy from escaping its assimilationist nature even in the 21st century. In the midst of this, far-right parties have gained power by promoting xenophobic sentiments centered on immigration problems. Finally, this study also looks at how far-right populism is currently changing the French political environment.

• Journal of the Korean Society for information Management
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• v.21 no.1
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• pp.119-144
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• 2004

Given Korea does not have a competitive edge compared to developed or other competing countries in national information and knowledge resource, it is necessary to consider ways to ensure the best out of the limited resource. It is believed that Korea has to develop a national information policy which enables effective and efficient communication, management and availability of information resource within Korea. In order to ensure the strategic integration of information and knowledge resource in Korea, this research encompasses the followings: First, the needs for establishing a strategic system that helps ensure the integration of information and knowledge resource on national level are probed, Second, current status of national information and knowledge management policy is reviewed, and some problems are brought forward, Third, to resolve the problems a strategic approach to the integration of information resource according to material types and individual institution's characteristics is proposed, fur effective allocation of government budget. Ant finally, based on the findings and models proposed, a national information strategy to integrate the dispersed information resource is suggested.