Definition of performance

They aid in diagnosis of whether a student has absorbed the tiaining content because the tests are, in fact, operational definitions of performance objectives. 

Compression garments are becoming increasingly more common among athletes as the garments have been shown to promote everything from an increase in oxygenation to a decrease in recovery time. Ibrahim (1968) developed several new test methods to provide a quantitative definition of performance of form-persuasive fabrics and... 

Assessing the state of the art in ceramic fibers requires a thoughtful definition of performance requirements and comparisons of these requirements to current capabilities. Defining the state of the art also requires the rigorous characterization of available materials, particularly the properties that are relevant to CMC applications. Microstructural stability, stiffness (elastie modulus), and creep behavior, as a function of temperature and time at temperature in actual service environments, are the most eritieal fiber properties. Therefore, research should focus on determining these properties, including understanding mierostruetural and compositional relationships to these properties. 

The commercial goals of getting the best value, and of encouraging competition, are enhanced by specifying items available from existing standard products rather than special-purpose items. The definition of performance and any other features should as far as possible be referenced to national or international standards that are familiar in the suppliers market. Similarly, and especially for lower-value items, the specification should be as simple to read and interpret as possible. Length, complexity, and non-standard requirements are all features which can be expected to cause less competition and higher prices. 

The methodology includes multiple steps common to many modeling methodologies, such as definition of performance measures, data gathering, execution of models, and analysis of results. There are also several issues relatively unique to supply chain environments and supply chain configuration. Many of these issues... 

The conceptual modeling step produced the formal descriptive representation of the supply chain configuration problem. In order to proceed with further evaluation, an experimental plan is developed. The purpose of experimental planning is to define procedures for modeling and analysis of the supply chain configuration problem. The tasks of experimental planning are (1) selection of appropriate modeling methods (2) definition of performance measures (3) identification of relevant experimental scenarios and experimental factors and (4) definition of individual experiments to be conducted as well as their properties. 

If "what gets measured gets done," what are we measuring when we measure performance From a systems standpoint, performance means output. In the context of psychology, performance means behavior or output from a human system. We cannot discuss measurement and evaluation without an operational definition of performance. Let us examine different definitions more closely. 

There are several important partial results. (1) Definition of quality of the CT-data in relation to the imaging task, including a model of the X-ray paths and how it is used to predict the optimal performance. (2) A model and method to determine how the information of the imaged object transfer from the detector entrance screen through the detector chain to CT... 

The three-part draft of the radioscopy standard pr EN 13068 is ready for the necessary european inquiries. This standard covers the requirements placed on the imaging system, the checking procedures as to the performance of the entire system and also the specifications of user guidelines for certain inspection tasks. The standard remains open to the definition of new inspection classes for future application cases. 

Definitions of some terms commonly used in describing scale performance foUow (6,7) ... 

Grademarking and certification—includes certification procedures performed by a qualified inspection and testing agency, and definitions of panel marking requirements... 

In applying the definition of rehabihty, the concept of adequate performance must be estabhshed clearly. Products usually do not fail suddenly, but degrade over time. Gasket leaks on equipment, for example, may start as a slow weep and increase in volume over time. The point at which this undesirable occurrence is called a failure must be clear before rehabihty can be measured objectively. Changing the failure definition for a product changes its rehabihty level, although the product itself has not changed. 

A reliability block diagram can be developed for the system from the definition of adequate performance. The block diagram represents the effect of subsystem or component failure on system performance. In this preliminary analysis, each subsystem is assumed to be either a success or failure. A rehabihty value is assigned to each subsystem where the appHcation and a specified time period are given. The reUabiUty values for each subsystem and the functional block diagram are the basis for the analysis. 

Additional definition of the operative mechanisms can obviate the need for the larger unit. It maybe possible to assess limitations in a smaller unit that has only a few injection points on the distributor. The unit could be used to evaluate distributor designs that permit a wide range of acceptable operating conditions. However, if the acceptable range proves smaller than desired, the larger pilot unit would then be needed to estabUsh acceptable performance. 

No single method or algorithm of optimization exists that can be apphed efficiently to all problems. The method chosen for any particular case will depend primarily on (I) the character of the objective function, (2) the nature of the constraints, and (3) the number of independent and dependent variables. Table 8-6 summarizes the six general steps for the analysis and solution of optimization problems (Edgar and Himmelblau, Optimization of Chemical Processes, McGraw-HiU, New York, 1988). You do not have to follow the cited order exac tly, but vou should cover all of the steps eventually. Shortcuts in the procedure are allowable, and the easy steps can be performed first. Steps I, 2, and 3 deal with the mathematical definition of the problem ideutificatiou of variables and specification of the objective function and statement of the constraints. If the process to be optimized is very complex, it may be necessaiy to reformulate the problem so that it can be solved with reasonable effort. Later in this section, we discuss the development of mathematical models for the process and the objec tive function (the economic model). 

Historical Definition Plant-performance analysis has been defined as the reconcihation, rec tification, and interpretation of plant... 

Manufacturing Facility location where work will be performed Yield definition of the quantity of product to be produced from a given quantity of raw materials... 

The definition of N as the total length of mobile disloeation per unit volume takes us from the mieroseale (atoms in a erystal lattiee) to the meso-seale (a sealar quantity N. Equation (7.1) then takes us from the mesoseale to the maeroseale in whieh we aetually make measurement of the rate at whieh materials aeeumulate plastie strain. The quantity may also have its own evolutionary law involving yet another mesoseale variable. When the number of evolutionary equations (ealled the material eonstitutive deserip-tion) equals the number of variables, we ean perform a ealeulation of expeeted material response by eombination of the evolutionary law with equations of mass, momentum, and energy eonservation. 

With today s technology, the definition of the surface as it effects a material s performance in many cases means the outer one or two monolayers. It is the specific chemistry of these immediate surface molecules that determines many of the chemical and physical properties. Therefore, it is important to have available a tool that is able to characterize the chemistry of these layers. One such method that has met with considerable success is Static Secondary Ion Mass Spectrometry (SIMS). 

To reiterate the definition of chromatographic resolution a separation is achieved in a chromatographic system by moving the peaks apart and by constraining the peak dispersion so that the individual peaks can be eluted discretely. Thus, even if the column succeeds in meeting this criterion, the separation can still be destroyed if the peaks are dispersed in parts of the apparatus other than the column. It follows that extra-column dispersion must be controlled and minimized to ensure that the full performance of the column is realized. 

The performance of a product where adhesion plays a role is determined both by its adhesive and cohesive properties. In the case of silicones, the promotion of adhesion and cohesion follows different mechanisms [37]. In this context, adhesion promotion deals with the bonding of a silicone phase to the substrate and reinforcement of the interphase region formed at the silicone-substrate interphase. The thickness and clear definition of this interphase is not well known, and in fact depends on many parameters including the surface physico-chemistry of... 

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