Machining time

The more recent developments have been in the area of manufacture, Rune Nilson of SRM worked with the machine tool manufacturers to develop precision carbide form cutting tools. These permit the rotors to be cut in two to three passes with high accuracy, The machining time has been reduced significantly. 

At all times the interrelationship between budgets must be maintained - sales with finished products - products with consumption of materials - consumption of materials with labor using them, machine time and power. Machine time will influence maintenance, which will have its own content of labor, materials and work by outside specialist contractors. 

It is usually consider a subgroup to the custom processor. They have little involvement in the business of their customer. They usually just sell machine time. 

Using a model framework, such as resource allocation, to model problems ranging from seminar room allocation to scheduling machine time for production lots in a factory. 

Thus the complexity in solving for the flame temperature depends on the number of product species chosen. For a system whose approximate temperature range is known, the complexity of the system can be reduced by the approach discussed earlier. Computer programs and machines are now available that can handle the most complex systems, but sometimes a little thought allows one to reduce the complexity of the problem and hence the machine time. 

There was no limitation on machine time, and it was thus possible to study common tumors on a large scale. A total number of 1297 patients were treated between 1994 and August 2002. 

Because of the strict limitation in the availability of the machine time, patients with dilScult tumor localizations were selected. For these patients, full advantage could be taken from the scanning beam and the energy modulation system [45]. 

Figure 3.29 Effect of machining time on molecular weight of polymer.

Table I (taken from Martin, Sykes, and Hioe16) contains the most recent exact enumerations of C for the triangular and fee lattices. Similar enumerations for other lattices have been given elsewhere ° 11 numerical analysis indicates that the close packed lattices lead to most rapid convergence, and these were therefore selected for an extensive enumeration project. It should be noted that C12 for the fee lattice is of order 1.8 x 1012. Using a direct enumeration procedure on a digital computer, the machine time required would be quite prohibitive. It is only by the way of sophisticated counting theorems17 and skilled programming that these numbers could be obtained.

It was only recently recognized (38) that such constraints, even when applied to a 1arge number of bonds simultaneously, need not appreciably increase the machine time required to do one integration step. Of course the mass-modified system does not have the same dynamics as the original system, and the rigid-bond system has neither the same dynamics nor the same statistical properties however, accurate dynamics is needed only in the bottlenecks— correct statistical properties are sufficient elsewhere. In view of the near-harmonicity of the bonded vibrations, it is probable that their effect on the statistical properties could be computed as a perturbation to the statistical properties of a rigid-bond system. 

It took less machine time and used fewer storage locations than the 3rd method. 

Ab initio methods calculate all quantities needed from first principles and use no experimentally determined parameters. The computations require more machine time and are therefore more expensive than semi-empirical ones. Good energies can now be obtained for small molecules by these techniques. The reader is referred to specialized treatments for further information/... 

The aliquots of the solution-state chemical synthesis samples were directly injected into a standard HPLC-NMR probe by using a robotic liquid handler. The NMR software was used to automatically find and suppress the intense NMR signals from any non-deuterated solvents used, typically using the WET sequence [5]. Unlike the characterisation of impurities in organic compounds (see the next section) or drug metabolites (see the appropriate chapter in this volume) where the proportions of the analytes can be very different, combinatorial chemistry samples tend to be all of similar quantity and this simplifies the analysis in that it is not usually necessary to worry overly about carry-over of material from sample to sample, nor it is necessary to readjust the NMR spectrometer receiver gain after every sample, thus saving considerable machine time. 

The importance of the impurity problems discussed in this chapter are fully recognized as evidenced by the fact that several Tokamaks are under construction or in operation with significant machine time devoted to study impurity release, transport and controls. 

The situation was not so severe in less populated districts, say Hokkaido, where Ohno s group finished the system program JAM0L II and the calculations of excited states of O2 and of metal-porphines. Still they had to manipulate magnetic tapes acrobatically because of the limited machine-time for one job. Most of us had either to be satisfied with semi-empirical -ND0 calculations or to come to the U.S. 

Machine-Time Requests to the Computer of the Institute for Molecular Science (1980)... 

M200H has an integrated array processer (lAP). Through the benchmark test in IMS, however, we found out that at best only 30 of our pregram was vectorized, gaining less than 20 of the total machine time. It is quite natural, therefore, this array processer is out of present users concern. Since the vendors are most seriously persuing vectrezation, however, excellent products will be offered very soon. 

As a practical conclusion of this section, we are allowed to say that we have now at our disposal a number of efficient methods for calculating in reasonable machine times band structures of stereoregular polymers. 

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