• Journal of Korea Society of Industrial Information Systems
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• v.12 no.2
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• pp.16-23
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• 2007

Tandem queueing systems well suit for modeling many telecommunication systems. Recently, very general $BMAP/G/1/N/1{\to}{\bullet}/PH/1/M-1$ type tandem queues were constructively studied. In this paper we illustrate application of the obtained results for optimization of a buffer pool design.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.199-200
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• 2012

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.10a
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• pp.67-70
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• 2000

AGV 시스템은 자동화된 물류 시스템에 있어서 필수적인 요소이다 하지만 시스템의 규모가 커질수록, 운반할 작업량이 증가할수록 차량의 운영에 있어서 많은 어려움이 발생된다. Tandem AGV 시스템은 전체 작업장을 몇 개의 지역으로 분할하고 각 지역에 한 대의 차량을 할당함으로써 이러한 운영의 문제점을 한번에 해결한 시스템이다. 본 논문에서는 Multi-load AGV를 사용하는 Tandem AGV 시스템의 설계에 필요한 작업장 분할 방법을 제시하고 시뮬레이션을 통해서 그 성능을 평가한다.

• Communications for Statistical Applications and Methods
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• v.7 no.2
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• pp.499-511
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• 2000

We consider a stable tandem network which consists of two M/M/1 nodes and study the probability that the total backlog exceeds a large level N. Since the excessive backlog is a rare event, it is difficult to estimate this probability efficiently by using the crude Monte Carlo simulation. Instead we perform the ;$h$-transform proposed by McDonald(1999) to obtain the twisted network, in which the node with the larger load is overloaded. Then we use it to run the fast simulation.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.299-303
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• 1995

This paper charcterizes dynamics of cold tandem minns, and constructs it state-space model of which are linear time invariant, using subspace method. Step responses particularly show the influence on mass transfer delay. Input-output data set are obtained form nonlinear differential equations including mass transfer delay and nonlinearity. It is shown that the identified state-apace model well approximates the original systems dynamics.

• Mass Spectrometry Letters
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• v.9 no.3
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• pp.73-76
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• 2018

The number of matched peaks (NMP) is estimated as the spectral similarity measure in tandem mass spectral library searches of small molecules. In the high resolution mode, NMP provides the same reliable identification as in the case of a common dot-product function. Corresponding true positive rates are ($94{\pm}3$) % and ($96{\pm}3$) %, respectively.

• Journal of the Korea Society for Simulation
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• v.3 no.1
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• pp.1-16
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• 1994

In this paper, the modeling capabilities of an object-oriented simulator, AgvTalk is demonstrated by designing and simulating a conceptually configuration of AGV systems, known as the tandem configuration. The characteristics and design methodology in AgvTalk are described between the tandem configuration for AGV systems and conventional AGV systems. Also, simulation between the conventional AGV system and its corresponding tandem AGV system are compared with AgvTalk in the job shop environment. From the simulation results, the characteristics of each system observed are discussed.

• 제어로봇시스템학회:학술대회논문집
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• 1993.10a
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• pp.987-993
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• 1993

A loop-shaping LQ controller is synthesized for tandem cold mills. And a new loop-shaping technique is suggested for LQ controller design. The suggested loop-shaping LQ control system is compared with the standard loop-shaping LQ control system. The simulation results show that the thickness and interstand tension control accuracy of tandem cold mills can be improved by the compensated loop-shaping LQ controller.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.23 no.58
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• pp.29-39
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• 2000

This paper concerns the location of the transit point between adjacent loops and guide direction of loops in the tandem configuration manufacturing system. The tandem configuration has been used to solve control problems like the vehicle dispatching and traffic control. The transit point between loops needs to deliver the parts from one loop to another. The location of transit point between adjacent loops and direction of loops must be determined to minimize the total travel time of parts in the manufacturing system. The model formulation is developed, a numerical example is shown.

• Journal of the Korean Operations Research and Management Science Society
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• v.15 no.2
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• pp.63-69
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• 1990

This note shows that the throughput bounds for two-stage tandem queueing systems with finite buffers, obtained by the existing methods, can significantly betightened via duality.