Performance-based testing technologies issues

Unlike simulations, which are not the actual activities performed in the workplace but an abstraction or representation of aspects of those activities, work sample testing involves the actual activities performed on the job. These are measured or rated for use as a predictor. The logic applied to work sample testing is somewhat different from other selection technologies in that it employs a criterion-based perspective the performance being tested is usually a subset of the actual task employed and is derived chrectly from the content domain of that task. This stands in contrast to other types of selection methodologies where a measure of some construct (such as personality, aptitude, ability, or intelligence) is measured and related statistically (usually correlated) with actual job performance (see Swezey 1981 for a detailed discussion of this issue). 

So far, no matter the determining technology of catalyst structure is improved from classic methods or developed and applied from new physical technology, the aim is to determine the structural characteristics of catalysts faster and more accurately and thus associate these structural characteristics with the performances of the catalyst, in an attempt to understand the nature of catalysis. Now a variety of methods have made many achievements, but either theoretical base or experimental technology need futher improvement, particularly to make them effectively functional under reaction conditions in situ) is still a key issue. It is more important to reasonably combine these methods to take comprehensive test, and combined with the study of catalytic kinetics and surface chemisorption. The details are discussed in Sec. 2.1.3 of Chapter 2. 

While the work carried out thus far has appeared promising, and several patents to many parties have been issued on the technology, to date no extensive studies yet exist of field performance of CP-based anti-corrosion coatings. And of course, no CP anti-corrosion coatings are yet commercially available. Field performance tests would be required to encompass not only corrosion protection, but also durability (e.g. against abrasion), and environmental impact (e.g. runoff or leaching from P(ANi) coatings). Thus, as compared to the tried-and-true chromate conversion... 

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