Disruptions to supply chains come in many forms. There are natural disasters such as hurricanes and earthquakes, and disasters perpetrated by humans, such as terrorist attacks. And there are dislocations that have more to do with the nature of business. Globalisation is stretching supply chains internationally at a time when market volatility is increasing, exposing companies to greater uncerta...

This paper is about the experience gained in IBM Haifa Research Lab (HRL) in creating regression-suites and minimizing their size, while maintaining high quality as measured by coverage. The problem that we solve, while similar to the one addressed in the literature, has a key difference; the compaction algorithm has to be implemented on-line due to the large number of tests processed. We compa...

We present a new algorithm based on Dual Graph Contrac tion DGC to transform the Run Graph into its Minimum Line Property Preserving MLPP form which when implemented in parallel requires O log longestcurve steps A MLPP graph of a line image compliments the structural information in geometric graph representations like the run graph Using such a graph and its dual line image analysis systems can...

The problem of finding straight-line drawings for planar graphs with small area is an important aspect in the context of drawing planar graphs and it has been extensively studied. In this thesis we will study the problem of finding planar straight-line grid drawings with minimum area. Our contributions to this problem are as follows: First, we will show, that the problem of finding minimum area...

In this study, a mixed model flow line sequencing problem with two objectives is considered. Mixed model flow line (MML) is known to be a special case of production lines where products are transported on a conveyor belt, and different models of the same product are inter-mixed to be assembled on the same line. We have focused on product-fixed, rate-synchronous lines with variable launching. Ou...

We present a new mathematical model for the assembly line balancing problem with the objective of maximizing the line comfort to operators. Besides minimizing discrepancies between the ergonomic risks of workstations, balancing is subject to temporal and spatial conditions for the workstations. To evaluate the performance of the proposed model, we compare it with other mathematical model whose ...

abstract regarding the imprecise or fuzzy data on the agriculture activities, applying models based on fuzzy data may be useful. in line with this condition this study tries to compare the ability of possiblistic programming approach in developing optimal solution with fuzzy and deterministic programming. to get this objective a data set obtained from 90 farmers of kohgilooye region, gathered i...

This paper is concerned about the sequencing problems in pull production systems which are composed of one mixed-model assembly line and one flexible fabrication flow line with limited intermediate buffers. Two objectives are considered simultaneously: minimizing the total variation in parts consumption in the assembly line and minimizing the makespan in the fabrication line. The mathematical m...