Faculty Profiles - YANAGAWA Yoshinari

The Optimal Operation Planning of Kanban under the Adaptable Capacity of Container

KANADA Yasuhisa, YANAGAWA Yoshinari, MIYAZAKI Shigeji

Journal of Japan Industrial Management Association 43 ( 3 ) 179 - 185 1992

Language：Japanese Publisher：Japan Industrial Management Association

This paper deals with the fixed order interval withdrawal Kanban system under the variable demand rates. Firstly, two methods, the adaptable capacity of containers and the adaptable number of Kanbans, are introduced. Secondly, the algorithm to determine the optimal operation planning for the two methods is presented. Thirdly, the solutions by the two methods for various numerical examples are compared. The results indicate that the total operation cost under the adaptable capacity containers is lower than the total operation cost under the adaptable number of Kanbans for the small variation of hourly demand.

DOI： 10.11221/jimapre.43.3_179

An Optimal Operation Planning for the Fixed Quantity Withdrawal Kanban System with Variable Leadtime

YANAGAWA Yoshinari, MIYAZAKI Shigeji, OHTA Hiroshi

Journal of Japan Industrial Management Association 43 ( 1 ) 1 - 5 1992

Language：Japanese Publisher：Japan Industrial Management Association

This paper deals with an optimal operation planning for the fixed quantity withdrawal Kanban system with variable leadtime and different consumption rate of parts for each period. The behaviour of the optimal planning (the optimal container capacity) which minimizes average total operation cost is shown by means of simulations under various values of parameters : the order cost factor, the range of consumption rate of parts and the range of leadtime for delivery.

DOI： 10.11221/jimapre.43.1_1

コンテナの部品収納数を可変としたかんばん方式の最適運用法

金田康寿, 柳川佳也, 宮崎茂次

日本経営工学会誌 42 ( 3 ) 206 - 206 1991

不良品による定期引取りかんばん方式運用法への影響

柳川佳也, 宮崎茂次

日本経営工学会誌 41 ( 6 ) 431 - 431 1991

An Optimal Operation Planning of Kanban with Variable Leadtime

YANAGAWA Yoshinari, MIYAZAKI Shigeji, OHTA Hiroshi

Journal of Japan Industrial Management Association 40 ( 6 ) 399 - 406 1990

Language：Japanese Publisher：Japan Industrial Management Association

In the majority of previous researches on Kanban system, the leadtime for delivery is treated as a fixed value.In many practical situations, however, the leadtime is likely variable. In this paper, an optimal operation planning of the fixed-interval withdrawal Kanban with variable leadtime is proposed. A cost is incurred for the inventory level less than the safety inventory level, since the risk of shortage of inventory should be considered.Behaviors of the optimal number of Kanbans and withdrawal interval of Kanban are investigated in terms of various parameters such as standard deviation and the mean of leadtime.

DOI： 10.11221/jimapre.40.6_399

リードタイムの変動を考慮した定量引取りかんばん方式の最適運用法(研究発表)

柳川佳也, 宮崎茂次, 太田宏

日本経営工学会誌 41 ( 3 ) 217 - 217 1990

The Optimal Operation Planning for the Fixed Quantity Withdrawal Kanban System

YANAGAWA Yoshinari, MIYAZAKI Shigeji, OHTA Hiroshi

Journal of Japan Industrial Management Association 41 ( 1 ) 37 - 42 1990

Language：Japanese Publisher：Japan Industrial Management Association

This paper deals with the optimal operation planning for the fixed quantity withdrawal kanban system. First, the formulas are given for obtaining the average inventory level and the minimum number of Kanbans to be required for fixed quantity withdrawal Kanban system. Secondly, the algorithm is proposed to determine the optimal container capacity so as to minimize the total operation cost composed of inventory cost and withdrawal cost. Thirdly, the behaviour of the optimal plannings is analysed under various values of parameters ; the order cost factor, the average consumption of parts per hour, and the duration of period in which the consumption rate of parts is constant.

DOI： 10.11221/jimapre.41.1_37

Optimal Transportation Strategies for the Mixed Parts Delivery under Kanban System

YANAGAWA Yoshinari, MIYAZAKI Shigeji, OHTA Hiroshi

Journal of Japan Industrial Management Association 40 ( 6 ) 407 - 413 1990

Language：Japanese Publisher：Japan Industrial Management Association

A procedure for minimizing the total operating costs in the fixed interval withdrawal Kanban system has been proposed in terms of two decision variables (order interval and container capacity). In the practical situation, however, the transportation strategy between the preceeding stations and the succeeding stations is critical for minimizing the withdrawal cost under the mixed parts delivery. In this paper an algorithm is proposed to determine the suitable transportation strategy among two major categories, depot system and picking up system, as well as the optimal order interval, container capacity and necessary number of Kanbans in the supplier Kanben.

DOI： 10.11221/jimapre.40.6_407

定量引取りかんばん方式の最適運用法

柳川佳也, 宮崎茂次, 太田宏

日本経営工学会誌 40 ( 5 ) 363 - 363 1989

An Analysis of Cost Factors for the Optimal Operation Planning in Kanban System : The Optimal Operation Planning of Kanban in Toyota Production System (Part II)

YANAGAWA Yoshinari, MIYAZAKI Shigeji, OHTA Hiroshi

Journal of Japan Industrial Management Association 40 ( 3 ) 141 - 148 1989

Language：Japanese Publisher：Japan Industrial Management Association

In Part I the optimal order interval of the fixed interval withdrawal Kanban system has been given to minimize the total operating cost. In this paper the cost function compoesed of inventory cost, order cost, and container soct for the supplier Kanban system including the inventory at the preceding station is analyzed. The optimal operation planning of the supplier Kanban is given in terms of two decision variables-the order interval and the container capacity-on the basis of field data in a factory ; the behaviours of optimal order interval and container capacity are investigated under various values of parameters.

DOI： 10.11221/jimapre.40.3_141