• Journal of The Korean Association of Information Education
• /
• v.10 no.1
• /
• pp.83-90
• /
• 2006

Ability to find some information is the basic ability in information making activity. Even though students have been instructed how to search information, however, they don't reach a certain level. For improving ability to make information, it needs to be connected to Korean and Social education. Therefore, this paper analyzes the contents of related-subjects to internal and external curriculum of computer education, and develops the program to improve ability to make information, selecting learning point for improving ability to make information.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.23 no.61
• /
• pp.127-135
• /
• 2000

This paper provides a new method of initializing neurons used in self-organizing neural networks and sequencing input nodes for applying to Euclidean traveling salesman problem. We use a general property that in any optimal solution for Euclidean traveling salesman problem, vertices located on the convex hull are visited in the order in which they appear on the convex hull boundary. We composite input nodes as number of convex hulls and initialize neurons as shape of the external convex hull. And then adapt input nodes as the convex hull unit and all convex hulls are adapted as same pattern, clockwise or counterclockwise. As a result of our experiments, we obtain l∼3 % improved solutions and these solutions can be used for initial solutions of any global search algorithms.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.15 no.4
• /
• pp.395-399
• /
• 2005

In this paper, we presents HIGH-Q learning algorithm with reinforcement learning for more fast and exact topic-directed web spidering. The purpose of reinforcement learning is to maximize rewards from environment, an reinforcement learning agents learn by interacting with external environment through trial and error. We performed experiments that compared the proposed method using reinforcement learning with breath first search method for searching the web pages. In result, reinforcement learning method using future discounted rewards searched a small number of pages to find result pages.

• Journal of Korean Association for Spatial Structures
• /
• v.8 no.5
• /
• pp.95-105
• /
• 2008

The objective of this study is find out the stressed condition, slipped direction and slipped dimension when some elements of cable-membrane structures are slipped from it's initially designed coordinates by external loads as wind or non uniform load and so on. In order to search the slipped behaviors of cable-membrane structures, a ALE finite element formulation is introduced. In these procedures, a stiffness matrix related with ALE concept is formulated and a FE analysis program for cable-membrane structures with slipped elements is developed.

• Bulletin of the Society of Naval Architects of Korea
• /
• v.21 no.2
• /
• pp.1-7
• /
• 1984

This paper is concerned with an optimum design study of containerships in preliminary stage by applying economic criteria. The Net Present Value Index (NPVI) and the Required Freight Rate(RFR) are used as measures of merit. Hooke & Jeeves direct search method and External Penalty Function method of Sequential Unconstrained Minimization Techniques(SUMT) are used for solving constrained nonlinear optimization problem. Sensitivity analysis is carried out to investigate the effect on the optimum solution due to change of values in some parameters such as crane capacity, load factor, oil price, ship speed and the ratio between loaded FEU and TEU.

• Structural Engineering and Mechanics
• /
• v.55 no.4
• /
• pp.839-856
• /
• 2015

A multi-contact tooth meshing model for helical gear pairs considering bearing and shaft deformations is proposed. First, to easily incorporate into the system model, the complicated Harris' bearing force-displacement relationship is simplified applying a linear least square curve fit. Then, effects of shaft and bearing flexibilities on the helical gear meshing behavior are implemented through transformation matrices which contain the helical gear orientation and spatial displacement under loads. Finally, true contact lines between conjugated teeth are approximated applying a modified meshing equation that includes the influence of tooth flank displacement on the tooth contact induced by shaft and bearing displacements. Based on the model, the bearing's force-displacement relation is examined, and the effects of shaft deformation and external load on the multi-contact tooth mesh load distribution are also analyzed. The advantage of this work is, unlike previous works to search true contact lines through time-consuming iterative strategy, to determine true contact lines between conjugated teeth directly with presentation of deformations of bearings and shafts.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.12 no.3
• /
• pp.261-268
• /
• 2002

This paper represents that auto tunings of membership functions and weights in the fuzzy neural networks are effectively performed by immune algorithm. A number of hybrid methods in fuzzy-neural networks are considered in the context of tuning of learning method, a general view is provided that they are the special cases of either the membership functions or the gain modification in the neural networks by genetic algorithms. On the other hand, since the immune network system possesses a self organizing and distributed memory, it is thus adaptive to its external environment and allows a PDP (parallel distributed processing) network to complete patterns against the environmental situation. Also, it can provide optimal solution. Simulation results reveal that immune algorithms are effective approaches to search for optimal or near optimal fuzzy rules and weights.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.12 no.3
• /
• pp.246-254
• /
• 2002

In this paper auto-tuning scheme of PID controller based on the reference model has been studied for a Process control system by immune algorithm. Up to this time, many sophisticated tuning algorithms have been tried in order to improve the PID controller performance under such difficult conditions. Also, a number of approaches have been proposed to implement mixed control structures that combine a PID controller with fuzzy logic. However, in the actual plant, they are manually tuned through a trial and error procedure, and the derivative action is switched off. Therefore, it is difficult to tune. Since the immune system possesses a self organizing and distributed memory, it is thus adaptive to its external environment and allows a PDP (Parallel Distributed Processing) network to complete patterns against the environmental situation. Simulation results reveal that reference model basd tuning by immune network suggested in this paper is an effective approach to search for optimal or near optimal process control.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
• /
• v.12 no.2
• /
• pp.148-160
• /
• 1999

In order to strengthen objectivity and availability of oriental herb medicine, the standard formula for herbs has been attempted to set up by documentary testing original herbs which were recorded in authorized document. The object herb medicines are CARYOPHYLLI FLOS. After this study, additional experimental verification is required as a matter of fact. As comparison materials, this thesis will be utilized. Specially the internal and external morphological standard in this study is expected to supply the search for several physiochemical reaction, biological reaction, determination of indicator material and identification of gene with basic sources in the future.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.19 no.2
• /
• pp.29-37
• /
• 2017

Due to the pursuit of individuality by modern consumers, the day has come when it is hard for design to be sustained solely by external beauty. Accordingly, products with the psychological value and brand stories are appearing, so that products that reinterpret traditional crafts are now being appreciated for their merits. Handmade goods defined as new luxury goods or products of high-quality craftsmanship are being used to enhance the consumer's individual image, and has created an unprecedented consumer stratum structure. Japan is one of the countries that actively applies traditional crafts to contemporary design and this study aims to investigate cases that are being reinterpreted in modern fashion in the theme of Boro, which is not as well known among Japanese traditional crafts. The purpose of this study is to offer basic data for designers by investigating the cases of the reinterpretation of traditional crafts. In addition, in reinterpreting traditional crafts into other fields, it is regarded as a meaningful way to contribute to a variety of other ideas. As the research method, first, the definition and kind of Boro were investigated utilizing the related literature information about the traditional fabric of Boro, which is the starting point and basis of the research. Second, Japanese aesthetic sense defined in the previous research was classified and the relationship of the anti-decorative aesthetic sense and Boro investigated. Third, after classifying the reinterpretation cases of Boro that have appeared in four major fashion collections and designer brands from 2011 to 2016 by the selected aesthetic sense, its characteristics were investigated. The search for examples of the reinterpretation of Boro uses the results of the keyword search of Boro and Boro Fashion via the internet search engine Google from April 2016 to December 2016. In addition, the search results were selected on the basis of whether the designer specified borrowing from Boro or whether Boro on the collection order was included or not. In addition to introducing an unknown fabric craft, this study also raises the methodological problems of the reinterpretation of traditional crafts. Products containing psychological value are expected to come into the spotlight in the upcoming consumer market. Therefore, as a follow-up study, it is suggested to research examples in which various crafts are being applied as products before one knows, how this creates new originality, and the limitations involved in this.