This paper investigates the problem of just-in-time permutation flow shop scheduling with limited buffers and linear job deterioration in an uncertain environment. The fuzzy set theory is applied to describe this situation. A novel mixed-integer nonlinear program is presented to minimize the weighted sum of fuzzy earliness and tardiness penalties. Due to the computational complexities, the prop...

In a task in which the observer must detect a signal at two locations, presenting a precue that predicts the location of a signal leads to improved performance with a valid cue (signal location matches the cue), compared to an invalid cue (signal location does not match the cue). The cue validity effect has often been explained with a limited capacity attentional mechanism improving the percept...

Decision Support System (DSS) is a system that can assist leaders in making decisions are accurate and targeted. Many problems be solved using SPK, from some of these one which the Selection Vocational High School students Medan. Of many Schools located city Medan Education Office, it certainly very difficult to find best School. This because every school must have its own advantages this will ...

Fire is a threat to human safety, property and the environment. The population getting denser, construction of office buildings, residential areas, industrial areas which are increasingly developing creates vulnerability in event fire that requires special handling. This study uses Weighted Sum Model (WSM) method. WSM method for solving complex unstructured situation into several components hie...

Education is one thing that very mandatory for citizens, especially Indonesia. Apart from clothing, food, shelter, and health, which are other basic needs, education no less important. The number of teachers too few to cater the large students, so more needed. This study aims give priority addition public high school in Magetan Regency with Weighted Sum Model method. research only limited being...

We discuss the relationship between matroid rank functions and a concept of discrete concavity called M-concavity. It is known that a matroid rank function and its weighted version called a weighted rank function are M-concave functions, while the (weighted) sum of matroid rank functions is not M-concave in general. We present a sufficient condition for a weighted sum of matroid rank functions ...