Execution speed

Let us comment on the developed schematic Monte Carlo (MC) code. Of course there are many clever ways to improve the execution speed. There is the important concept of neighbor lists, of clever implementation of numerical instructions, and so on. In developing a computer simulation one usually plugs in these enhancing concepts bit by bit. 

Thus, positions of the particles at the time t + At can be computed from the positions at times t and t - At, and the second derivative, (frildfi) that corresponds to the acceleration. The latter can be computed via Eqs. (35.1) and (35.2). Equation (35.3) is known as the Verlet algorithm. A number of methods are discussed in specihc textbooks (e.g., Allen and Tildesley, 1992), and the choice must be taken by making a balance between accuracy and cost in execution speed. 

This paper has primarily stressed concepts rather than implementation details. A prototype system based on these concepts has been implemented, with concentration in the cyclohexene domain. The entire system, including grammars, the FMO verification, and WLN manipulation required only 12 pages of Prolog code. Although execution speed was never considered a factor at this stage, the system performs the disconnection... 

Other alignment software. While Smith/Waterman and BLAST alignment are the most popular methods of performing singlealignments a host of other software has been developed for specialized purposes that attempt to improve execution speed by making simplifying assumptions about the types of matches that can be found (Table 4). 

Greater execution speed because fewer operations are required. 

This gave us the flexibility to implement these routines in the most convenient language. Where we felt that execution speed would not be impacted too badly, we opted to code in FORTRAN because of the greater ease of program maintenance. 

This latest extension illustrates how a macro handles arrays. The array must be dimensioned, i.e., the computer must be told to expect a multi-valued parameter that is organized in rows and/or columns. In VBA it is easiest to dimension an array As Variant, which leaves its precise size and nature unspecified. (The only disadvantage of always using As Variant is that it is inefficient in terms of computer memory and execution speed. Fortunately, with modern computers, we only need to consider those factors in programs that involve rather large data arrays.)... 

Several approaches are being investigated to solve the problem of execution speed. Work is proceeding on two hardware solutions faster processors that are designed specifically for artificial intelligence and parallel architectures which work on multiple parts of the problem simultaneously. Software solutions attempt to reduce the number of computations using more efficient algorithms and better heuristics. 

The transaction focus of APS systems renders their speed of execution critical to their effectiveness. Taking advantage of the many advances in hardware and software technology over the last decade, APS systems have execution speeds orders of magnitude faster than those of traditional MRP. Most APS engines have their data downioaded, either in batch or transaction mode, to a dedicated server that is architected to run memory-resident programs and databases. Under this scheme, they are able to deliver real-time order promising and make multiple runs to test various actions in an effort to further improve the plan. 

The primary arguments against saving all of the data tire the storage requirement, which can be excessive, the decrease in simulation execution speed due to electronically writing all of the output data, and the difiiculty of transforming the simulation data into a form suitable for an analysis... 

Selected activity of daily living execution speed Postural stability... 

Selected activity of daily hving execution speed Visual attention span... 

Correlation between feedback and execution speed during the learning phase of a manual assembly task (mean values of 10 subjects and 8 hand and arm muscles). 

General central nervous system effects (of drug) Selected activity of daily hving execution speed Postural stability Upper extremity neuromotor channel capacity Manual manipulation speed Visual-upper extremity information processing speed Visual attention span Visual-spatial memory capacity Visual-numerical memory capacity... 

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