Let X = {x1, ..., xn} be a set, and let P = {P1, ..., Pm} be a set of subsets of X. The goal is to find the smallest sub-collection of sets R ⊆ P whose union covers all of X. More concretely, we can say that each xi, 1 ≤ i ≤ n represents a “skill”, and each Pj, 1 ≤ j ≤ m represents a “person”. In this case, xi ∈ Pj if person Pj has the skill xi. Then, as an employer, the goal is to find the min...

The front cover shows ABB serving the cement manufacturing industry, which it has done since 1961 with turnkey installations, electrical equipment and automation systems. In 1990, ABB recognised the MES (Manufacturing Execution Systems) business area as a natural extension to its technology portfolio. Since then, ABB has provided added value solutions that are independent from the installed pro...

Clean water is essential for humans which must be fulfilled survival. The population in Jonggat, Central Lombok, increases from year to causes the using of clean get an increase too. necessity rising not line with availability nature, therefore PDAM (Regency Municipality Waterworks) manages existing resource. Then, it will distributed consumers. purpose this research determine optimal solution ...

Let G be a bridgeless cubic graph. The Berge–Fulkerson Conjecture (1970s) states that admits list of six perfect matchings such each edge belongs to exactly two these matchings. If answered in the affirmative, other recent conjectures would also true: Fan–Raspaud (1994), which three every at most them; and conjecture by Mazzuoccolo (2013), whose deletion yields bipartite subgraph G. It can show...

In this paper we propose a new approach to data mining and knowledge discovery based on information flow distribution in a flow graph. Flow graphs introduced in this paper are different from those proposed by Ford and Fulkerson for optimal flow analysis and they model flow distribution in a network rather than the optimal flow which is used for information flow examination in decision algorithm...

Traffic congestion is a major urban transportation problem which occurs when the traffic volume exceeds the capacity of existing road facilities. The occurring of traffic congestion is due to the freedom of owning private vehicle, poor traffic facility and unrestricted urban population growth. In this study, identification of maximum flow and bottleneck path in Kota Kinabalu, Sabah, Malaysia wa...

D.R. Fulkerson 1976] described a two-phase greedy algorithm to nd a minimum cost spanning arborescence and to solve the dual linear program. This was extended by the present author for "kernel systems", a model including the rooted edge-connectivity augmentation problem, as well. A similar type of method was developed by D. Kornblum 1978] for "lattice polyhedra", a notion introduced by A. Hooma...

Tibial tubercle osteotomy is a common treatment option for a number of patellofemoral joint disorders including chondromalacia, "anterior knee pain" syndromes, patellofemoral arthritis, and patellar instability. Tibial tubercle osteotomy can modify tracking and/or patellofemoral contact forces to effect the unloading of chondral defects of the patella or trochlea, correct multiplanar suboptimal...