Results 271 to 280 of about 803,824 (319)

Joins and subdirect products of varieties

Algebra universalis, 2011
We generalise in three different directions two well-known results in universal algebra. Gratzer, Lakser and Plonka proved that independent subvarieties $${\mathcal{V}_{1}, \mathcal{V}_{2}}$$ of a variety
Kowalski Tomasz, PAOLI, FRANCESCO
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Joining Aluminium for Mass Production Industries

SAE Technical Paper Series, 1983
Resistance welding is the major process used for the mass production of sheet metal components but, when used on aluminium, problems arise because of the conductivity of the sheet, the rapid degradation of the copper electrodes and the tendency to solidification cracking of some alloys.
R. M. Rivett, W. Lucas
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Production cell for laser joining of microsystems with modular “Pick and Join” tools

Microsystem Technologies, 2006
The ongoing trend in the Microtechnology field reflects a further increase of the product miniaturization and in the same time shortened lifetime cycles. These aspects are the basis for the development of new packaging and interconnection concepts with increased efficiency and reliability.
PopraweR., BosseL., BogleaA.
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Rotation and Crossing Numbers for Join Products

Bulletin of the Malaysian Mathematical Sciences Society, 2020
Computing the crossing number of a graph is NP-hard. In the paper, for a disconnected 6-vertex graph $$Q =C_{5}\cup K_{1}$$ , we obtain the crossing number $$Z(6,n)+\lfloor \frac{n}{2}\rfloor $$ of the graph $$Q_{n}$$ which is the join product of Q with the discrete graph by introducing the “rotation” method.
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Joining and production technologies

2009
New approaches to production engineering are being applied extensively in the automotive industry. This involves the entire production process from the car body plant through to assembly, starting with the first metal panel, continuing with the finished body, and ending with the completed vehicle.
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Avoiding Cartesian products for multiple joins

Journal of the ACM, 1997
Computing the natural join of a set of relations is an important operation in relational database systems. The ordering of joins determines to a large extent the computation time of the join. Since the number of possible orderings could be very large, query optimizers first reduce the search space by using various heuristics and then try ...
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