Look up table

Figure 10.2-9. Application of a counterpropagation neural network as a look-up table for IR spectra sinnulation, The winning neuron which contains the RDF code in the upper layer of the network points to the simulated IR spectrum in the lower layer.

The trained counterpvopagation network is then able to predict the spectrum for a new structure when operating as a look-up table (see Figure 10.2-9) the encoded query or th.c input structure is input into the trained network and the winning neuron is determined by considering just the upper part of the network. The neuron points to the corresponding neuron in the lower part of the network, which then provides the simulated IR spectrum. 

Procedures and instru- Standardize on commonly accepted units and ments have different keep them consistent Provide conversion charts and look-up tables Provide change control to ensure devices and procedures are synchronized Update procedures to include appropriate unit conversion data CCPS G-32... 

The range of directions used in the search is determined from a set of look-up tables based on the aspect ratio of the area source, the stability category, and the downwind distance. The SCREEN model also provides the user an option to specify a wind direction orientation relative to the long axis of the rectangular area. The second option may be used to estimate the concentration at a particular receptor location relative to the area. The output table for area sources includes the wind direction associated with the maximum concentration at each distance. 

Finally, it is interesting to compare NETtalk s skills with the skills of commercially available text-to-speech systems such as DECtalk. Unlike NETtalk, DECtalk uses both extensive (and labor intensive) look up tables that store the phonetic transcription of common and not so common words and sets of phonological rules for words not in its main look up table. While DECtalk performs undeniably better than NETtalk, the comparison is not really a fair one. DECtalk is a combined r sult of many years worth of careful linguistic analysis and codification. NETtalk, on the other hand, is a self-contained. system that (in the span of a few hours worth of DEC VAX CPU time) can learn enough on its own from a set of simple examples to be both intelligible and accurate. 

The actual computation is broken down into two steps (1) A Collision Step, during which the value of a site is sent to a computation look-up table, with its input written to the display screen memory as in CAM-6. RAPl s screen memory consists of 16 256 x 512 planes, (2) A Propagation Step, during which the system is decomposed into a set of one-bit two-dimensional planes (one plane for each bit of each site), and the bits of each site are displaced to one of the site s neighbors by a translation of the entire plane. 

Cellsim s universe consists of a 512 x 512 array. The program itself is completely menu-driven and includes these features (1) 256-state computed-function rules, in addition to lookup-tables, on both the Sun and CM (2) creation of look-up tables using Langton s lambda parameter (see section 3.2) (3) the ability to save images in Sun raster format and (4) the ability to generate lookup tables with standalone C code. Cellsim can be obtained via anonymous ftp on the Internet to think.com. 

Since we are doing inverse transform using a look-up table, we need to break down any given transfer functions into smaller parts which match what the table has—what is called partial fractions. The time-domain function is the sum of the inverse transform of the individual terms, making use of the fact that Laplace transform is a linear operator. 

The linear property is one very important reason why we can do partial fractions and inverse transform using a look-up table. This is also how we analyze more complex, but linearized, systems. Even though a text may not state this property explicitly, we rely heavily on it in classical control. 

Since we rely on a look-up table to do reverse Laplace transform, we need the skill to reduce a complex function down to simpler parts that match our table. In theory, we should be able to "break up" a ratio of two polynomials in 5 into simpler partial fractions. If the polynomial in the denominator, p(s), is of an order higher than the numerator, q(s), we can derive 1... 

Example 2.8 Repeat Example 2.7 using a look-up table. 

Groeneveld, D. C., S. C. Cheng, and T. Doan, 1986, AECL—UO Critical Heat Flux Look up Table, Heat Transfer Eng. 7 46-64. (5)... 

In Equation 8, V is the value to be tested. Xv is the mean, and n is the number of values. The t-score is converted to a probability by a subroutine which calculates the incomplete Beta function. This could also be accomplished using an internal look-up table. 

Since it is not necessary to permanently recalculate the coherence between the Suction Speed, the Suction Amount and the required amount of rinse water, implementation of a special FUZZY PROCESSOR with the AEG Oko-Lavamat washing machines was abandoned. Instead, the perceived knowledge was registered in a conventional microprocessor as look-up tables. The values were taken from the... 

Values accounted using Look-up tables (Modelling and Mapping Manual, 2004)... 

The result of this work with the model clearly shows that there are worthwhile savings to be had from brine optimisation particularly as the cost of implementation will be small. The plant already has a system which optimises its production schedule and the brine optimisation results can be added to the associated program in the form of a simple look-up table. 

Construction of Look-up Tables for Numerical Simulations and Validation... 

Timing circuits are provided for measuring precisely the time between ti and t. That time difference can be correlated directly with the temperature of the fluorescent sensor by reference to an empirically determined look up table stored digitally within the instrument. 

The result of a number of curve fits are averaged to further reduce the effects of noise. The averaged decay time is then compared with values stored in adigital look-up table to determine the temperature of the sensor. 

A first description of the microhotplate in AHDL was developed, which calculates the power dissipated by the polysilicon heater as shown in Fig. 3.3 [89]. The calculated power serves as input for a look-up table with the measured values of the power dissipated by a normalized polysilicon resistor, which then provides the corresponding microhotplate temperature. The model extracts the microhotplate temperature from the table. This microhotplate temperature is subject to temporal delay... 

Fig. 3.3. AHDL description of a microhotplate using look-up tables...

For some reactions, has been determined by direct measurement over a broad range of temperature, pressure, and salinities. Enough data exist to formulate empirical equations that enable extrapolation to the exact temperature, salinity, and pressure of interest. This has been done for the chemical reactions in the carbonate system, for the dissociation of water and for the dissolution of gases. These equations have been used to formulate look-up tables, such as those presented in the online appendix on the companion website. 

Methods for handling these compHcations were worked out in the early 1970s. In practice, a look-up table can assign hue to each HI/LO pair of attenuation measurements. Traditionally, orange is assigned to organic material 10),... 

All essential identification information related to the sample is either printed on the sample vial s bar code label or exists within a look up table resident in controller memory. This approach avoids operator entry of this information through the computer keyboard and also facihtates implementation of a random order processing scheme. 

The rates Wj, Wij, and Woj in a turbulent flame are assumed to be similar to those in a laminar flame. Thus, prior turbulent flame calculations, Wj, Wij, and Woj, are tabulated in the form of look-up tables. 

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