• Journal of the Korean Data and Information Science Society
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• v.23 no.4
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• pp.717-725
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• 2012

Data mining is a method to find useful information for large amounts of data in database. One of the well-studied problems in data mining is exploration for association rules. Association rule mining searches for interesting relationships among items in a given database by support, confidence, and lift. If we use the existing association rules, we can commit some errors by information loss not to consider the size of occurrence frequency. In this paper, we proposed a new association rule thresholds considering the number of possible rules of interest items and compare with existing association rule thresholds by example and real data. As the results, the new association rule thresholds were more useful than existing thresholds.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.20
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• pp.369-385
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• 2003

Contracts of carriage evidenced by bill of lading which are made between carrier and unidentified number of the shipper are to a large extent regulated by statute law such as Hague-Visby Rules and Hamburg Rules. These rules qualifies the contractual liberty of parties and especially restrains the carrier from introducing exemption from his liability beyond those admitted by the Rules. However, these Rules are applied only to goods in respect of which a bill of lading or similar document of title has been issued. In this reason, it is possible that liability of carrier in respect of goods shipped could become an issue where electronic bill of lading is used instead of paper bill of lading because electronic bill of lading is not generally recognised document of title in existing rule. Thus, this article discuss the relation between the carrier who create electronic bill of lading and the Rules regulating liability of carrier. Also, new Rules which has been examining in UNCITRAL will be introduced.

• Korean Journal of Hydrosciences
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• v.4
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• pp.65-79
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• 1993

Selection of the best operating rule among a set of alternatives for a multipurpose reservoir system operation requires to evaluate many minor criteria in addition to the major objectives assessed to the system. These problems are sufficiently complex and difficult that they are beyond heuristic decision rules and experiences in case several noncommensurable multiple criteria are included in the evaluation. With the assistance of multicriterion decision analysis techniques, it is possible to select the best one among various alternatives by systematically comparing and ranking the alternatives with respect to the criteria of choice. Evaluation criteria for multipurpose reservoir system operating rules were identified and defined, and the multicriterion decision analysis techniques were applied to evaluate the four existing operating rules of the Chungju multipurpose project according to the identified nine multiple criteria. The application results show that the methodology is very efficient to select the best operation alternative among a finite number of operating rules with many evaluation criteria for a large-scale reservoir system operation.

• Korea Trade Review
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• v.47 no.5
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• pp.223-240
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• 2022

Anti-circumvention rules were discussed profoundly during the Uruguay Round and the DDA negotiations, although WTO members failed to reached an agreement to introduce it to the WTO Anti-Dumping Agreement. However, as the cases of circumvention of anti-dumping duties increase, a number of countries have enacted anti-circumvention regulations as part of their anti-dumping laws. This study aims to analyze anti-circumvention rules from the perspective of WTO law. After overviewing the object and purpose of anti-dumping and anti-circumvention regulations, it examines anti-circumvention regulations of the US, the EU, and India. Next, the study explores the possible WTO-inconsistent aspects of those regulations. Then, it discusses whether it would be preferable for countries not equipped with anti-circumvention regulations, such as Korea, to have one. Thereafter, this study proposes Korean government to introduce anti-circumvention rules into its anti-dumping law.

• Journal of Arbitration Studies
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• v.18 no.2
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• pp.33-54
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• 2008

The KCAB enacted their new international arbitration rules(the KCAB rules) in 2007 wheres The CIETAC revised their arbitration rules(the CIETAC new rules) in 2005. This article investigates some practical problems on both rules respectively and helps trading companies to proceed arbitration by these rules. This study finds some problems as follows. There are the following problems in KCAB rules. First, application fee is too expensive fee. So KCAB should cut down their application fee. Second, if there is no agreement on number of arbitrators, the arbitration is processed by sole arbitrator. But it is very difficult for sole arbitrator to process international arbitration due to characteristics of international arbitration such as complexity of case and a large sum of claim. Third, a period of selection of arbitrator is long. In view of developing of communication means, this period is needed more short. In the meantimes, there are the following problems in CIETAC rules. First, though the CIETAC new rules enlarges the right of parties autonomy such as selection of arbitration rules or revise of it, China arbitration Act stipulates a institute arbitration which restrict partie's autonomy. Second, if there is no agreement on arbitrators, the CIETAC appoints chair of tribural in three arbitrators ion or sole arbitrators. is processed by sole arbitrator. Third, a draft of arbitral award is checked by the CIETAC in advance. Especially, the two latter problems is possible for foreigners to have doubts of fairness of CIETAC arbitration. Becuase the CIETAC is not a complete independent private institution. Consequently, I suggest that Korean trading companies should examine problems of these two arbitration rules carefully, and select a most appropriate rules for settlement of their disputes with Chines companies.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.6
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• pp.871-880
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• 1993

Conventional binary addition rules require a carry formation and propagation to the most significant bit, and lead to serial addition. Thus, the carry progapation in a binary addition stands as a hindrance to the full utilization of parallelism optics offers, Optical adders using a modified signed-digit(MSD) number system have been proposed to eliminate the carry propagation chain states to represent the three possible digits of MSD number system must encode three different states to represent the three possible digits of MSD. In the paper, we propose the design of a parallel optical adder based on 2-bit addition rules using the method of symbolic substitution(SS).

• Journal of the Korean Institute of Telematics and Electronics
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• v.27 no.6
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• pp.954-962
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• 1990

Experties of recognizing an object despite of every possible occlusions among objects is difficult to be provided directly to a system. In this paper, we propose a method for inferring inherent shape-characteirstics of an object from training views provided. The method learns rules incrementally by alternating the rule induction process from limited number of training views and the rule verification process from the following taining views. The learned rules are represented using logical expressions to enhance the readability. Thr proposed method is tested by simulating occlusions on 2-dimensional objects to examine the learning process and to show improvement of recognition rate. Thr result shows that it can be applied to a practical system for 3-dimensional object recognition.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.1 no.1
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• pp.75-80
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• 2001

Rule inconsistency is an important issue that is needed to be addressed while designing efficient and optimal fuzzy rule bases. Automatic generation of fuzzy rules from data sets, using machine learning techniques, can generate a significant number of redundant and inconsistent rules. In this study we have shown that it is possible to provide a systematic approach to understand the fuzzy rule inconsistency problem by using the proposed measure called the Commonality measure. Apart from introducing this measure, this paper describes an algorithm to optimize a fuzzy rule base using it. The optimization procedure performs elimination of redundant and/or inconsistent fuzzy rules from a rule base.

• Nuclear Engineering and Technology
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• v.55 no.10
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• pp.3581-3590
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• 2023

High-temperature design evaluations were conducted on Type 316L stainless steel piping for a 700 ℃ large-capacity thermal energy storage verification test loop (TESET) under construction at KAERI. The hot leg piping with sodium coolant at 700 ℃ connects the main components of the loop heater, hot storage tank, and air-to-sodium heat exchanger. Currently, the design rules of ASME B31.1 and RCC-MRx provide design procedures for high-temperature piping in the creep range for Type 316L stainless steel. However, the design material properties around 700 ℃ are not available in those rules. Therefore, a number of material tests, including creep tests at various temperatures, were conducted to determine the insufficient material properties and relevant design coefficients so that high-temperature design on the 700 ℃ piping may be possible. It was shown that Type 316L stainless steel can be used in a 700 ℃ high-temperature piping system of Generation IV reactor systems or a renewable energy systems, such as thermal energy storage systems, for a limited operation time.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.4
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• pp.29-38
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• 2003

This paper deals with an automated computer-aided process planning and die design system with which designer can determine operation sequences even after only a little experience in process planning and die design of multi former-bolt products by multi-stage former working. The approach is based on knowledge-based rules, and a process knowledge base consisting of design rules is built. Knowledge fur the system is formulated from plasticity theories, empirical results and the empirical knowledge of field experts. Programs for the system have been written in AutoLISP for AutoCAD with a personal computer. An attempt is made to link programs incorporating a number of expert design rules with the process variables obtained by commercial FEM softwares, DEFORM and ANSYS, to form a useful package. The system is composed of four main modules. The process planning and die design module considers several factors, such as the complexities of preform geometry, punch and die profiles, specifications of available multi former, and the availability of standard parts. It can provide a flexible process based on either the reduction in the number of forming sequences by combining the possible two processes in sequence, or the reduction of deviation of the distribution and the level of the required forming loads by controlling the forming ratios. The system uses 2D geometry recognition and is integrated with the technology of process planning, die design, and CAE analysis. The standardization of die parts for multi former-bolt products requiring a cold forging process is described. The system developed makes it possible to design and manufacture multi former-bolt products more efficiently.