Daisuke Hirotani

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In a ‘‘self-balancing production line’’, each worker is assigned work dynamically. In previous research, maximum production rates can be achieved if the workers are arranged in sequence from slowest to fastest [Bartholdi, J. J., & Eisenstein, D. D. (1996). A production line that balances itself, Operations Research, 44(1), 21–34]. However, the conditions(More)
Three types of JIT ordering systems used for supply chain management were quality tested, the Kanban, the original constant work-in-process (CONWIP), and a synchronized CONWIP. The synchronized CONWIP system is described for its ability to handle complicated supply chains, which consist of assembly stages with different lead times. In the system, orders for(More)
In a "Self-Balancing Production Line", each worker is assigned work dynamically, thus they can keep the balanced production under satisfying the specific conditions. For structure of line, in-tree assembly network line has been analyzed in previous paper. In that paper, line are virtually integrated to one and slowest to fastest sequence can be balanced(More)
The interface between the perovskite (PVK, CH3 NH3 PbI3 ) and hole-transport layers in perovskite solar cells is discussed. The device architecture studied is as follows: F-doped tin oxide (FTO)-coated glass/compact TiO2 /mesoporous TiO2 /PVK/2,2',7,7'-tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (Spiro-MeOTAD)/Au. After a thin layer of(More)
The systematic improvement of processes is practically realised in the industry and economy by operating a Process Management (PcM) System. Many authors also recommend a systematic repetition of Value Stream Mapping (VSM); but the global experiences in applying VSM do more or less indicate a single or punctual application of VSM to improve processes or(More)
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