Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Iteration command

After eleven iterations, hinfopt identifies that 7 in equation (9.176) has a best value of 0.13. The command sigma calculates the data for a singular value Bode diagram as shown in Figures 9.32, 9.34 and 9.35. Other information printed in the command window is given below... [Pg.416]

It is beyond the scope of this book to go though all the specifics of catalyst testing and to discuss all pitfalls that may arise. Instead we list the Ten Commandments for the Testing of Catalysts. This is a set of guidelines that have been provided by experts of a company called Catalytica [F.M. Dautzenberg in Characterization of Catalyst Development An Iterative Approach (Eds. S.A. Bradley, M.J. Gattuso, R.J. Ber-tolacini), ACS Symposium Series, Vol. 411 (1989)]. [Pg.204]

The INTERACT RESET command allows making the next iteration with GO. The value of the first derivative, TEMP at the end of each run can be checked with VAL. [Pg.634]

Although this equation cannot be solved analytically for A pi, it can be solved by iteration (or by using the solve command on a calculator or spreadsheet), because all other parameters are known. The unknown velocity is then given by... [Pg.355]

As before, everything in this equation is known except for ARe>pl, which can be determined by iteration (or by using the solve spreadsheet or calculator command). When this is found, the unknown diameter is given by... [Pg.356]

In general, non-linear problems cannot be resolved explicitly, i.e. there is no equation that allows the computation of the result in a direct way. Usually such systems can be resolved numerically in an iterative process. In most instances, this is done via a truncated Taylor series expansion. This downgrades the problem to a linear one that can be resolved with a stroke of the brush or the Matlab / and commands see The Pseudo-Inverse (p.ll 7). [Pg.48]

In order to call newtonpoly (start, n) implicitly on a command line with success, the two implicit inputs start and n must have been declared previously and must be available in the current workspace. Of course, one can also call newtonpoly9 explicitly by entering newtonpoly (21,42), for example, on the command line if one wants to see the list of 41 Newton iterates for the same polynomial-root problem, starting from start = xo = 21. [Pg.31]

If A is not a square matrix and we command A b in MATLAB, then the SVD is invoked and finds the least squares solution to the minimization problem min., Ax — b. A slight variant that uses only the QR factorization mentioned in subsection (F) for a singular but square system matrix A Rn,n is used inside our modified boundary value solver bvp4cf singhouseqr. m in Chapter 5 in order to deal successfully with singular Jacobian matrices inside its embedded Newton iteration. [Pg.544]

This code is listed under the Run Prog command button. It is found following the nonactive line number 1140 in the program listing. Each time the user clicks this command button, the program iterates fully, producing new answers if any data input changes were made. [Pg.386]

The current iteration number is displayed in the formula bar. To terminate calculations, press COMMAND+(period) or ESC (Macintosh) or ESC (Windows). [Pg.203]

Solve this problem using finite difference technique (either using fsolve command [section 10.1.3] or iteration [section 10.1.4]) for O = 2, y = 30 and P = 0.1. Which method is more efficient ... [Pg.856]

The Madonna software allows an automatic, iterative solution of boundary value problems. Selecting Boundary Value from the Model menu prompts for the boundary condition input Set S=1 at X=1 with unknowns Sguess. Allowing Sguess to vary between 0.5 and 0.6 gives a solution that approaches Sguess=0.562. After an additional RUN command the solution is shown. It is also instructive to use the manual slider method, as explained above. [Pg.585]

Following the preceding command, the results of the intermediate iterations are graphically shown in the form of an eiTor bar on the screen so that the user can follow the convergence of the calculations. Next, a message showing the results of the optimization appears on the screen. To proceed, press RETURN.)... [Pg.124]

Recommendation 4. The quantitative risk assessment (QRA) for each chemical demilitarization site should be iterative. Actual chemical events should be used routinely to test the completeness of the QRA, which should be routinely utilized to hypothesize the frequency and consequences of chemical events. The Program Manager for Chemical Demilitarization and the U.S. Army Soldier and Biological Chemical Command should use the QRAs to evaluate measures to control future chemical events. The Army should also consider using QRAs to examine scenarios associated with sabotage, terrorism, and war. [Pg.69]

This qualifier decrements the base rating of the transform for each primary halide that is on a cyclic carbon which is not a part of the path keying the transform. From this example, it is possible to see how densely the chemical data is packed (one qualifier takes up only one computer word - 52 bits). There is a target to be searched for (the halide), a domain or location to which the search is restricted (alpha to the carbon but on a rirxg and off the path), and an iteration command indicating that the operation (the subtraction) is to be performed for each occurrence. [Pg.23]

All input spectra and structures must also be saved in direct access files for later use in the iterative process or for checking the results. Different data types (structures, spectra, sets of commands) must be coded uniformly in all system modules for input and output. The same is true for the files on which the final or intermediate results are stored. Because a resulting output file of one module may act as an input file to another one, or be used as an input for starting a new problem, all data exchange processes and files must be standardized. Good library search systems perform the reformatting of data transparently to the... [Pg.4547]

The command charge tells the program to change the concentration of H+ until the charges balance. After nine iterations, an output file is produced which includes these lines ... [Pg.479]

Analyzing the Results and Iterating. After the basic pipelined data flow is created, the user should schedule the control steps and simulate a representative set of instructions to estimate the performance of the design. Once control steps have been scheduled using CSTEP, the Workbench s Simulate Instruction command can be used to trace the execution of an instruction and determine the amount of time spent executing the instruction in each stage. However, since the CSTEP control step scheduler does not understand pipelined SELECTs, the results of the simulation must be processed slightly by hand to reflect this. [Pg.75]

The command HALT indicates that processing on that SMILES is to stop, the programmed MODSMI transformation is to be made, and re-execution of the entire ACL using the newly modified smiles is to be performed. The MODSMI transformations are performed iteratively until no more can be apphed. By appropriate nesting very elaborate transformations can be made to a 2-D structure. [Pg.320]


See other pages where Iteration command is mentioned: [Pg.31]    [Pg.300]    [Pg.15]    [Pg.257]    [Pg.319]    [Pg.326]    [Pg.456]    [Pg.244]    [Pg.821]    [Pg.833]    [Pg.855]    [Pg.26]    [Pg.109]    [Pg.409]    [Pg.72]    [Pg.184]    [Pg.383]    [Pg.1847]    [Pg.144]    [Pg.121]    [Pg.86]    [Pg.269]    [Pg.472]    [Pg.325]    [Pg.279]    [Pg.281]    [Pg.283]    [Pg.301]    [Pg.314]    [Pg.212]   
See also in sourсe #XX -- [ Pg.23 ]




SEARCH



ITER

Iterated

Iteration

Iteration iterator

Iterative

© 2024 chempedia.info