the dogleg severity is one of the most important parameters in directional drilling. improvement of these indicators actually means choosing the best conditions for the directional drilling in order to reach the target point. selection of high levels of the dogleg severity actually means minimizing well trajectory, but on the other hand, increases fatigue in drill string, increases torque and d...

1. Importance of Agricultural Equipment Choice and Operation 2. Methods of Obtaining Access to Equipment 3. Equipment Costs 4. Equipment Selection 4.1 Individual Equipment Selection 4.2 Matching Equipment 5. Equipment Operation 5.1 Equipment Operation Co-ordination 5.2 Operation Productivity 5.3 Equipment Safety 5.4 Equipment Maintenance during Operation 6. Automation of Agricultural Equipment ...

The longwall mining method is one of the most applied methods in extracting low-inclined to high-inclined coal seams. Selection of the most suitable extraction equipment is very important in the economical, safety, and productivity aspects of mining operations. There are a lot of parameters affecting the selection of an extraction equipment in mechanized longwall mining in steeply inclined coal...

An aperiodic test clock methodology to reduce test time of wafer sort has been recently proposed. In practice, however, an automatic test equipment (ATE) allows only a small number of clock periods and finding those is a mathematically complex problem. This paper proposes an algorithm for optimal selection of any given number of tester clock periods. Keywords-Aperiodic clock, Test time reductio...

We examine the selection of jurors' names from multiple source lists, using statistical and optimization methodology. Five plans for sampling at random from overlapping lists of names are analyzed for their probabilistic and cost properties. In each plan the probability of a name being selected is independent of which and how many lists it appears on. We consider the optimal ordering of the fra...

Mining shovels or excavators are basic equipment designed to dig and load material in surface mines. They are often considered the major material-handling equipment for high-production, low-cost operations (HPLC). The selection of an appropriate shovel for any HPLC operation is of critical importance because the overall production of the mine is measured in terms of material handled by a princi...