In this paper, the design of a repairable series-parallel system with failure dependencies is studied. The key point is that failure dependency and limited repair teams can affect the state transition rates of each subsystem, and thus affect the state distribution of the subsystem and the availability of the system. Taking this into consideration, we present a dependence function to determine t...

The scheduling of tasks in a production line is complex problem that needs to take into account several constraints, such as product deadlines and machine limitations. With innovative focus, the main constraint will be addressed this paper, usually not considered, energy consumption cost line. For that, an approach based on genetic algorithms proposed implemented. use local generation, especial...

Due to population growth in urban areas, especially in the capital cities in developing countries, the use of private vehicles are increasing, leading to many problems such as congestion, pollution, noise, long travel time, high travel cost and more side effects. In such circumstances government policy would encourage people to use public transportation. In the meantime, employing the Intellige...

In this paper, an exact geometric algorithm is presented for solving two-job sequencing and scheduling problems in flexible flow shop and job shop environments while the resources are (un)available in some time periods and processors (un)availability is the same in all work centers. This study seems utterly new and it is applicable to any performance measure based on the completion time. The in...

Resource availability is an important constraint on community structure. Some authors have suggested it conceptually links two of the most basic patterns in ecology, the species-area relationship and the latitudinal gradient in species richness. I present the first experimental test of this conjecture, by manipulating both the area and resource concentration of artificial larval drosophilid fly...

We examine a situation in which a decision-maker executes a sequence of resource allocation decisions over time, but the availability of the indivisible resources at future epochs is uncertain due to actions of competitors. We cast this problem as a specialized type of stochastic knapsack problem in which the uncertainty of item (resource) availability is induced by competitors concurrently fil...

We report on the expression of singular nominals in Burmese, an articleless language, from original elicitation work. Bare nouns are interpreted as definites, to which numeral tiq 'one' is added form indefinites. propose that restricts domain nominal a singleton, and its addition subject Non-Vacuity constraint; this source anti-uniqueness inference furthermore investigate availability anaphoric...

This paper considers a scheduling problem with component availability constraints in a supply chain consisting of two manufacturing facilities and a merge-in-transit facility. Three mixed-integer programming (MIP) models and a constraint programming (CP) model are compared in an extensive numerical study. Results show that when there are no components shared among the two manufacturers, the MIP...

This paper considers a developing nation that faces a foreign exchange shortage and hence its demand for foreign goods is limited both by its income and its foreign exchange balance. Availability of international credit relaxes the second constraint. We develop a simple model of strategic interaction between lending institutions and firms, and show that the availability of international credit ...

In this paper, we present a practical approach for the joint reliability–redundancy optimization of multistate series–parallel systems. In addition to determining the optimal redundancy level for each parallel subsystem, this approach also aims at finding the optimal values for the variables that affect the component state distributions in each subsystem. The key point is that technical and org...