• Proceedings of the Membrane Society of Korea Conference
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• 1996.10a
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• pp.3-7
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• 1996

A rigorous analysis on the effect of colloidal interactions on the separation characteristic has been extended to the case of non-dilute charged solute concentration. The solute partitioning within slit pores for a wide range of solute concentration has been predicted by performing the Monte Carlo technique. Using a hindered transport model, rejection coefficients have been estimated from the predicted concentration profile.

• Proceedings of the KIEE Conference
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• 1999.07c
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• pp.1067-1069
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• 1999

This paper presents a network reduction using weak coupling method. Weak coupling method of identifying coherent generator groups are proposed. The partitioning technique used in this paper is based on a property of sparse matrix factorization. When a matrix has been factorized, a system is divided into study area, boundary buses and external area. A reduction process for external system starts with the load bus elimination and coherent generator aggregation. An identification of coherent generator group, network partitioning and network reduction are presented.

• 한국IT서비스학회:학술대회논문집
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• 2009.11a
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• pp.499-504
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• 2009

최근 공공기관에서는 소프트웨어 산업의 선진화를 위하여 소프트웨어 분할발주 제도를 도입 검토하고 있다. 성공적인 제도 도입을 위해 사전에 고려해야 하는 사항을 제도 도입시 예상되는 위험요인 도출 및 분석, 평가를 통해 파악하고자 한다. 먼저 문헌연구를 통해 소프트웨어 산업의 일반적인 위험요인을 바탕으로, 설문조사를 통해 분할발주 하에서의 위험요인의 영향도 변화 파악 및 추가 위험요인을 도출한다. 이를 바탕으로 AHP기법을 통해 위험요인간 우선순위를 분석하여 위험요인 평가모델을 제시한다.

• Journal of the Korean Institute of Telematics and Electronics
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• v.24 no.3
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• pp.535-540
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• 1987

This paper proposes a circuit partitioning method and a multifunctional BILBO which can perform the multimodule test in the case of testing VLSI circuits. By using these circuit partitioning method and multifunctional BILBO, test time and cost can be reduced greatly by performing the pipeline test method. And the quantity of circuit that shold be added for testing is also reduced in half by interposing only one BILBO between each module. Also, we confirmed that the multifunctional BILBO proposed here has high error detection capability by analyzing error detection capability of this multifunctional BILBO in mathematics.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 1995.11a
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• pp.79-88
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• 1995

Most works done so far have concentrated on developing data modeling techniques such as multi-level relation for data protection. These techniques, however, cannot be applied to practical area. This is because they require new queries or new architectures. In this paper, we propose a query processing technique for multi-level databases using horizontal partitioning and views, which does not need any change in database architecture and query language.

• Journal of the Korea Society for Simulation
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• v.6 no.1
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• pp.1-13
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• 1997

In this paper, we present a partitioning algorithm for distributed simulation of DEVS (Discrete Event System Specification) models. To preserve concurrency inherent in models, the proposed algorithm utilizes the structural information of models. Through benchmark simulation experiments, we show that the proposed algorithm can generate good partitions.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.37 no.2
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• pp.122-129
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• 1988

A design method of decentralized state observer for large scale interconnected systems is proposed by the use of interconnection rejection approach and interconnection modelling technique. The proposed design method is developed based on the interconnection partitioning. Therefore partitioning conditions are suggested. And the conditions for observer pole assignment and observer parameter determination procedures are described for possible interconnection patterns. The decentralized state observer gives good estimates without any information on the interconnection variables and estimations. In addition, a numerical example is given to explain the design procedures and to show the estimation performance of the decentralized observer.

• Communications of the Korean Mathematical Society
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• v.39 no.3
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• pp.595-609
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• 2024

In this article, we study a certain class of partitioning ideals known as Q-ideals, in semirings. Main objective is to investigate differential identities linking a semiring S to its prime Q-ideal I_Q, which ensure the commutativity and other features of S/I_Q.

• Korean Journal of Soil Science and Fertilizer
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• v.46 no.6
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• pp.652-658
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• 2013

A huge number of greenhouse soils in Korea have accumulated mineral elements which induce many nutritional and pathological problems. The present study was performed to the effects of the reduced fertilization on plant growth, and uptake and partitioning of minerals (N, P, K) and soluble carbohydrates using highly minerals-accumulated farmer's greenhouse soil. On the basis of the recommended application for tomato crop, the application rates of N, P and K were 110(50%)-5.2(5%)-41.5(35%)kg $ha^{-1}$, respectively, using Hoagland's nutrient solution. Tomato growth rates during the whole experiment were not significant between treatments, but it was found that a decrease in daily growth represented after 60 days of treatment (DAT). The reduced application led to a drastic decrease in the concentration of N, P and K in fruits, and, thus, this resulted in lower uptake after 40 DAT. The lower phloem export and utilization of soluble carbohydrates caused an accumulation of extra-carbohydrates in leaves, stems and fruits in the reduced application. The reduced fertilization induced the capture of N, P and K in leaves and of soluble carbohydrates in stems compared to the conventional application. In this study, we suggest that it is possible to delay the first fertigation time in minerals-accumulated soils without an adverse impact on crop growth, but it is necessary to regularly monitor mineral status in soil to ensure a balanced uptake, synthesis and partitioning of minerals and carbohydrates.

• School Mathematics
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• v.14 no.1
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• pp.29-43
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• 2012

This paper investigated the conceptual schemes in which four children constructed a strategy representing the situation as a figure and partitioning it related to the work which they quantify the result of partitioning to various types of fractions when an equal sharing situation was given to them in contextual or an abstract symbolic form of division. Also, the paper researched how the relationship of factors and multiples between the numerator and denominator, or between the divisor and dividend affected the construction. The children's partitioning strategies were developed such as: repeated halving stage ${\rightarrow}$ consuming all quantity stage ${\rightarrow}$ whole number objects leftover stage ${\rightarrow}$ singleton object analysis/multiple objects analysis ${\rightarrow}$ direct mapping stage. When children connected the singleton object analysis with multiple object analysis, they finally became able to conceptualize division as fractions and fractions as division.