Showing papers by "Musashi University published in 1991"
TL;DR: Evidence was obtained that Eastern lowland gorillas feed regularly on ants in the lowland forests of eastern Zaire, and six species of ants that may have been consumed by the gorillas were identified as Ponerinae, which possess a painful sting.
Abstract: Evidence was obtained that Eastern lowland gorillas feed regularly on ants in the lowland forests of eastern Zaire. The six species of ants that may have been consumed by the gorillas were identified as Ponerinae, which possess a painful sting. Gorillas consumed the ants in both rainy and dry seasons, and fragments of ants were found in fecal samples from gorillas of all age-sex classes. Field signs indicated that the gorillas search intensively ants in primary and ancient secondary forests. Such searching may stimulate the gorillas to range through various types of vegetation and, thus, it may contribute to elongation of the distances that they travel daily.
33 citations
TL;DR: A new manufacturing-oriented simulation package for production management is proposed that can effectively resolve problems in actual plant operation and its distinctive characteristic is its introduction of production-order methods into simulation models.
Abstract: This paper proposes a new manufacturing-oriented simulation package for production management. The objective is to present a technical summary of the proposed simulation system, and to confirm that it can effectively resolve problems in actual plant operation. The distinctive characteristic of this system is its introduction of production-order methods into simulation models. Accordingly, the user can represent manufacturing material logistics in a simulation model. A case study describes the application of the system to an actual manufacturing line. The target manufacturing system is a typical multi-variate low-volume production system with a complex material flow. The simulation study ascertained its potential productivity, bottle-neck process analysis, optimal number of pallets, and other features. This information is extremely important in production management and affects both design and operation. Finally, a simulation strategy for production management in a CIM environment is discussed.
4 citations