• 한국경영과학회지
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• 제35권2호
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• pp.1-17
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• 2010

This paper aims to compare four operating priority rules of RMGC (Rail Mounted Gantry Crane) used in semi-automated container terminal. The four priority rules employed in this paper are FCFS (First-come-first-served), LCFS (Last-come-first-served), TOS (Turn-over-served) and NFS (Nearest-first-served). And to compare the four operating priority rules, this paper analyzed productivity of RMGC and CC (Container Crane), waiting time of YT (Yard Truck) and RT (Road Truck) in container yard, and turnaround time of RT in container terminal of each priority rule by using stevedoring simulation. As a result, NFS was evaluated as the best rule to improve the overall productivity of container terminal in terms of all criteria.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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• pp.303-306
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• 1996

This paper proposes a heuristic method for job shop scheduling with alternative machines. Our heuristic suggests four machine-selecting rules and two priority dispatching rules for modifying existent ones considering alternative machines, and then it extends existing nondelay/active job shop schedule generation. This heuristic provides good criteria(rules) in the selection of a proper machine among those performing a specific operation and for the dispatch of an operation to a selected machine and thus these rules permit the efficient job shop scheduling with alternative machines. The performances of our four machine-selecting rules in addition to the two priority dispatching rules, applied together with the existing 17 rules, are experimented and evaluated, respectively.

• 건축역사연구
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• 제15권4호
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• pp.23-36
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• 2006

Since he was a leading figure in nineteenth century architecture, Viollet-le-Duc's architectural theory is crucial to the foundation of modern architecture. He has been called a Gothic Revivalist, a Structural Rationalist and a Positivist. The first title was perhaps due to his vigorous restoration of Gothic works such as $N\hat{o}tre$ Dame, but he did not adore the Gothic style just for itself. Rather, he hoped to deduce some principles from the style. So how did he manage this? In his book "Entretiens sur l'Architecture (Lectures on Architecture), published between 1864 and 1872, he mentions using Descartes' four rules for reaching architectural certainty in contrast with the chaotic situation during that modernising period. Furthermore Viollet-le-Duc's theory can be seen as a serious attempt to translates Descartes' philosophical rules into systems of architectural speculation. Descartes' four rules of doubt are anchored in mathematical propositions, and without mathematical distinctions, none of these rules are valid. In other word, mathematics for Viollet is the yardstick of judgement between distinctness and indistinctness. Many architectural problems arise from this view. In this paper, the validities of applying Descartes' method of doubt to architectural discourse will be discussed in order to address the question:-Did Viollet-le-Duc clearly grasp Cartesian method by which memory was erased from the world?

• 한국초등수학교육학회지
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• 제17권2호
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• pp.185-205
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• 2013

본 연구에서는 덧셈, 뺄셈, 곱셈, 나눗셈과 직접적으로 연관이 있는 초등학교용 사칙계산 관련 어휘를 획정하기 위하여, 먼저 사칙계산 어휘를 수집하고 그것의 종별, 군별 분류에 관해 논의하였다. 다음으로 기본적인 사칙계산 관련 어휘에 관해 논의하였다. 이때 덧셈, 뺄셈, 곱셈, 나눗셈 관련 어휘가 기본적으로 각각 더하다, 빼다, 곱하다, 나누다의 네 동사에서 비롯된다고 보고, 각각의 어간(즉, 더, 빼, 곱, 나누)을 포함하는 어휘를 기본적인 사칙계산 관련 어휘로 삼았다. 이어 연산을 보조하는 어휘와 연산의 결과를 나타내는 어휘를 그것에 포함시키고, 다음 준거에 맞추어 초등학교용 사칙계산 관련 어휘를 획정하였다. 첫째, 동사의 명사형을 어근으로 한 새로운 동사나 파생어를 사용하지 않는다. 둘째, 편수자료 또는 표준국어대사전에 등재되어 있지만, 교과서/익힘책에 용례가 없거나 드문 어휘는 사용하지 않는다. 셋째, 대체가 불가능한 어휘와 교수학적 이유가 있는 어휘는 사용한다.

• 경영과학
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• 제13권2호
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• pp.147-161
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• 1996

Due-date is an important factor in Flexible Manufacturing System scheduling. Even though most of researchers have focused part selection and loading problem using fixed due-date assignment rules, FMSs consist of multi-function machines which facilitate alternative processes. This research investigates interactions of three dispatching mechanisms, three NSS (Next Station Selection) rules and four due-date assignment rules using simulation. Both cost-based and time-based performance measures are considered in this research.

• East Asian mathematical journal
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• 제38권2호
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• pp.257-275
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• 2022

Recently, there are studies the argument that arithmetic rules established by the four fundamental arithmetic operations, in other words, commutative laws, associative laws, distributive laws, should be explicitly described in mathematics textbooks and the curriculum. These rules are currently implicitly presented or omitted from textbooks, but they contain important principles that foster mathematical thinking. This study aims to evaluate the current level of understanding of these computation rules and provide implications for the curriculum and textbook writing. To this end, the correct answer ratio of the five arithmetic rules for 1-4 grades 398 in five elementary schools was investigated and the type of error was analyzed and presented, and the subject to learn these rules and the points to be noted in teaching and learning were also presented. These results will help to clarify the achievement criteria and learning contents of the calculation rules, which were implicitly presented in existing national textbooks, in a new 2022 revised curriculum.

• 한국지능시스템학회논문지
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• 제2권2호
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• pp.42-60
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• 1992

An adaptive fuzzy system can efficiently classify subimages into four categories according to image activity level for image data compression. The system estimates fuzzy rules by clustering input-output data generated from a given adaptive transform image coding process. The system encodes different images without modification and reduces side information when encoding multiple images. In the second part, a fuzzy system estimates optimal bit maps for the four subimage classes in noisy channels assuming a Gauss-Markov image model. The fuzzy systems respectively estimate the sampled subimage classification and the bit-allocation processes without a mathematical model of how outputs depend on inputs and without rules articulated by experts.

• Management Science and Financial Engineering
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• 제3권2호
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• pp.29-43
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• 1997

Many heuristics have been developed in order to overcome the computational complexity of job shop problems. In this research, we develop a new heuristic by selecting four simple dispatching rules, i.e., SPT, LPT, SR and LR, dynamically as scheduling proceeds. The selection is accomplished by using artificial neural networks. As a result of testing on 50 problems, the makespan obtained by our heuristic is, on the average, 13.0% shorter than the longest makespan, and 0.4% shorter than the shortest makespan obtained by existing dispatching rules.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1998년도 추계학술대회 논문집
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• pp.304-308
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• 1998

With the advances in concurrent engineering, schedulability has become an important design issue in machine loading and routing procedure. In this paper, four rules to improve schedulability of loading and routing are formulated as a mixed-integer programming model based on machine, routing and tool flexibilities. In this model, these rules are represented as an objective function or constraints. The impact of rules on the quality of schedules for the result of loading and routing is measured with makespan, throughput and average machine utilization.

• 한국중재학회지:중재연구
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• 제23권1호
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• pp.177-200
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• 2013

Recently, many international arbitration institutions have responded to the business requirements of their users and have revised their rules to enhance the time and cost efficiency. Korean Commercial Arbitration Board (KCAB) revised the international arbitration rule in 2011, introducing new arbitration mechanisms like the expedited procedure. Also other Asian arbitration institutions introduced the expedited procedure in their international arbitration rules. Now expedited procedures are regarded as a very attractive system in the field of international arbitration. Accordingly, this paper reviewed the expedited procedures of four Asian countries, including China(CIETAC), Hong Kong (HKIAC), Singapore(SIAC) and Korea(KCAB). The purpose of this study is to find out meaningful implications to improve the Korean system. Based on this review, some recommendations are suggested as follows. First, the scope of the expedited procedure has to be adjusted upward than the current 200 million won. Second, there should be a fee schedule only for the expedited procedure. Third, in case of small amount international disputes, written examination should be more used in the expedited procedure. Finally, KCAB should make strong efforts to improve the awareness and usage of the expedited procedure in Korea.