Good versus bad

Thus, it is closely related to our understanding of good versus bad visibility for a particular set of environmental conditions. 

Additional analysis of the molecular weight distribution of the polyethylene layer in the "good" versus "bad" packages was performed using high-temperature GPC. 

The most commonly cited mechanistic explanation for the paradoxical roles of -NO in cell and organ injury involves the interaction of NO with reactive oxygen species (ROS). The complexity of these reactions, many of which are mentioned above, leaves ample room to interpret results in terms of good versus bad by emphasizing one or another collection of reactions. Central to ROS biological actions is the metal-catalyzed Haber-Weiss reaction ... 

It should be noted, however, that full quantification of the SIMS data is not always required. Indeed, when comparing good versus bad samples, or when an understanding of concentration variations is required, intensity variations alone can generally suffice. In such cases, it is, however, still advisable to reference the signal of interest to some stable internal signal (a matrix signal). 

Once the choice of necessary technique(s) has been made, then details, such as the way in which the technique(s) must be used to produce the crucial information, and any precautions that must be taken to avoid ambiguity in interpretation have to be decided. In many problems vital clues can be extracted from good versus bad or before versus after analytical comparisons, which require control specimens. There is also the ever-recurring and vexed question, referred to earlier, of how to access buried information. Here practicalities enter again. The customer may decide that solution of the problem can be achieved only by such access, but then he must be made aware not only that extra time, and therefore money, are involved but that the mechanics of obtaining access, typically by ion bombardment to removal material, may change the nature of the information irretrievably. There is no firm and final answer to that situation every sample and problem has to be considered individually, and the pros and cons weighed up. 

Actual Costs versus Standard Costs Let us consider the sales, profits, and manufacduring-cost data in Table 9-40. The gross profit is 33,129 per period better than e)mected. Clearly, there is less incentive to investigate overall costs when the profit variance is favorable than if the profit were less than expected. However, standard costing enables an objective analysis of the data, whether good or bad, to be made. 

N. Linden, S. Popescu, Good dynamics versus bad kinematics is entanglement needed for quantum computation , Phys. Rev. Lett. 87 (2001) 047901-1. 

As with many analytical techniques, an understanding of the fundamental concepts underlying the generation of a recorded signal is not necessary in order to carry out an effective routine analysis. Indeed, the analytical information needed is most often acquired through comparisons of known good versus known bad samples, or comparisons of unknown versus known samples (the latter can be in the form of reference materials) using procedures developed specifically for the analysis at hand. 

Consider two recent experiences with salespeople, one good and one bad. In each case, consider how much they talked versus how much they listened. Compare and contrast how much each salesperson thought in terms of his or her needs versus yours. 

From a practical point of view this is all that can and need be said about the subject. The remarks that are about to follow are of interest only to perfumers who would like to dig deeper, and to prepare themselves for discussions on the "synthesis-versus-nature" subject. We regret that they are full of provisos and apparent contradictions. In any debate this makes it very hard for the differentiated view to hold its own against the sweeping view, "nature is good, chemistry is bad."... 

If it is the intrinsic viscosity that we want to determine, why don t we just plot the relative viscosity versus concentration and determine the initial slope Because that would be too easy and we don t see any reason to pass up an opportunity to make your life difficult and miserable by introducing a few more viscosities and a more complex way of plotting the data. Actually, the plot itself is not too bad, and the reason we do all this is to try and minimize errors and obtain more accurate values of [77]. In the good old days,... 

The good news is that the data reveal a well-defined primordial abundance for 4He. The bad news is that the scale of Fig. 6 hides the very small statistical errors, along with a dichotomy between the OS/OSS and ITL/IT primordial helium abundance determinations (Yp(OS) = 0.234 0.003 versus Yp(IT) = 0.244 0.002). Furthermore, even if one adopts the IT/ITL data, there are corrections which should be applied which change... 

In a comparison study of automatic versus manual inspection, Louer et al. reported a much better rejection rate for known bad ampules (93% vs 54%). However, they also showed that the rate of rejection of good ampules by the automatic inspection machine increased significantly. Generally, the automatic visual inspection machines do not detect particles much smaller than the human threshold, but they will help to increase the rate of rejection of truly bad units while eliminating human error. 

FIGURE 7 Types of data objects with respect to their location in the space of a robust model and their residuals from a robust model (A) regular objects ( ), (B) good leverage object (+), (C) bad leverage object ( > < ) and orthogonal outlier ( ), and (D) distance-distance plot with score versus orthogonal distances of objects. 

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