Concurrency procedure

Procedure and task Concurrent procedure calls are allowed. Concurrent procedure calls are not allowed. 

This example may seem a little complicated, but it clearly demonstrates how a procedure can be used in both a sequential and concurrent manner. The concurrent procedure is effectively a process. This process may contain a Clock statement (but not a Walt statement Box 7.8) or may simply be a block of combinational logic, as in this case. As with any concurrent statement variables cannot be passed to the procedure but can be used inside it, as seen here. Refer again to Box 7.9 for more details. 

A procedure is a statement and therefore, unlike a function, it is not called as part of an expression. Furthermore, it can be treated as both a sequential statement and a concurrent statement. The same procedure can be used in both ways, assuming a concurrent procedure returns and receives signals and not variables. The behaviour of the procedure is always executed in a sequential manner. The simple syntax of a procedure call is ... 

A concurrent procedure is called whenever its Inout or Out parameters change. It is therefore like a commonly used process that can be called from a package whenever it is required. 

A concurrent procedure call is equivalent to a process and may contain a Clock statement. 

Remember that multiple calls to the same procedure will result in logic being generated each time. For a concurrent procedure, multiple calls can be made through a For-Generate statement. For a sequential procedure, multiple calls can be made with a For-Loop statement. 

This parameterization allows for the tracking problem for general nonstationary situations. In the following, a concurrent procedure is introduced to estimate the noise parameter vector. As a result, not only the optimal estimation can be obtained but also the associated uncertainty can be quantified. 

Matrix QMC procedures, similar to configuration interaction treatments, have been devised in an attempt to calculate many states concurrently. These methods are not yet well developed, as evidenced by oscillatory behavior in the excited-state energies. 

Each plant or laboratory should adopt definite rules and procedures for electrical iastahations and work. All iastahations should be ia accordance with the National Electrical Code (NEC) for the type of ha2ard, eg. Class I flammable gas or vapor Class II organic, metallic, or conductive dusts and Class III combustible fibers and the degree of process containment, eg. Division 1 open and Division 2 closed (67). Regardless of the flammabiUty of the materials ia the iastaHed operations, changes ia procedure involving use of such materials often occur, sometimes without concurrent alteration of the electrical iastaHation. 

A successful procedure for the formation of 2,5-di-t-butylfuran involves reaction of the parent heterocycle with f-butyl chloride in the presence of iron(III) chloride and iron(III) oxide. Iron(III) oxide acts as a hydrogen chloride scavenger and at the same time regenerates the catalyst. Concurrent polymerization normally deactivates the catalyst (82CI(L)603). 

Both common and systematic names of compounds are used throughout this volume, depending on which the Editor-in-Chief felt was more appropriate The Chemical Abstracts indexing name for each title compound, if it differs from the title name, is given as a subtitle Systematic Chemical Abstracts nomenclature, used in both the 9th and 10th Collective Indexes for the title compound and a selection of other compounds mentioned in the procedure, is provided in an appendix at the end of each preparation. Registry numbers, which are useful in computer searching and identification, are also provided in these appendixes. Whenever two names are concurrently in use and one name is the correct Chemical Abstracts name, that name is adopted. For example, both diethyl ether and ethyl ether are normally used. Since ethyl ether is the established Chemical Abstracts name for the 8lh Collective Index, it has been used in this volume The 9th Collective Index name is 1,1 -oxybisethane, which the Editors consider too cumbersome. 

Observation level some form of queuing system for jobs required. Evaluation level management must outline explicit criteria for running concurrent tasks train staff not only in normal work situations, but also in heavy work load situations use valid training methods and provide procedures. 

At the start the cathode is invariably a metal different from that to be deposited. Frequently, the aim is to coat a base metal with a more noble one, but it may not be possible to do this in one step. When a metal is immersed in a plating bath it will corrode unless its potential is sufficiently low to suppress its ionisation. Fortunately, a low rate of corrosion is tolerable for a brief initial period. There are cases where even when a cathode is being plated at a high cathodic (nett) current density, the substrate continues to corrode rapidly because the potential (determined by the metal deposited) is too high. No satisfactory coating forms if the substrate dissolves at a high rate concurrently with electrodeposition. This problem can be overcome by one or more of the following procedures ... 

Common names of the compounds arc used throughout this volume. Preparations appear in the alphabetical order of common names of the compound or names of the synthetic procedures. The Chemical Abstracts indexing name for each title compound, if it differs from the common name, is given as a subtitle. Because of the major shift to new systematic nomenclature adopted by Chemical Abstracts in 1972, many common names used in the text are immediately followed by the bracketed, new names. Whenever two names are concurrently in use, the correct Chemical Abstracts name is adopted. The prefix n- is deleted from w-alkanes and w-alkyls. In the case of amines, both the common and systematic names are used, depending on which one the Editor-in-Chief feels is more appropriate. All reported dimensions are now expressed in Systeme International units. 

Fia. 12. Input of goal state and generation of concurrent goals. (Reprinted from Comp. Chem. Eng., 12. Lakshmanan, R. and Stephanopoulos, G., Synthesis of operating procedures for complete chemical plants. Parts I, II, p. 985, 1(X)3, Copyright 1988, with kind permission from Elsevier Science Ltd., The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK.)... 

Furthermore, pH electrode calibration can be performed in situ by the new method [48], concurrently with the pKj determination. This is a substantial improvement in comparison to the traditional procedure of first doing a blank titration to determine the four Avdeef-Bucher parameters [24]. The traditional cosolvent methods used with sparingly soluble molecules can be considerably limited in the pH<4 region when DMSO-water solutions are used. This is no longer a serious problem, and routine blank titrations are now rarely needed in the new in situ procedure. 

The use of standards prepared in control matrices is typically not allowed for determinative procedures because control tissues are not routinely available to regulatory laboratories. When a matrix effect alters the spectrum or chromatography of an analyte relative to the pure standard, so that confirmatory criteria cannot be met, a control extract containing standard may be substituted for pure standard. Justification, with CVM concurrence, should be provided for confirmatory methods that use fortified control extracts. 

For the confirmatory procedure, it is recommended that the sponsor develop spectral data based on at least three structurally specific ions that completely define the marker residue molecule. These ions may or may not include the molecular ion. The use of water loss and isotopic ions is usually unacceptable and CVM concurrence should be sought when water loss ions or isotopic ions are selected for the confirmatory analysis. The proposed fragment ion structures should be consistent with the fragmentation pattern, and justification for specificity of selected ions or scan range should be included. All confirmation criteria should be specified in the standard operating procedure. 

DP-6 over 3000 soil samples collected from several terrestrial field dissipation studies. The sample procedural recoveries using this method, conducted concurrently with the treated samples during soil residue analysis, are summarized in Table 5. This method was proven to be short, rugged, sensitive, and suitable for measuring residues in soil and sediment at levels down to 0.01 mg kg . The reproducibility of the methods also indicated acceptable method performance and, as a result, thousands of samples were analyzed using this methodology. 

Tang X, Falls DL, Li X, et al. Antigen-retrieval procedure for bromodeoxyuridine immunolabeling with concurrent labeling of nuclear DNA and antigens damaged by HC1 pretreatment. J. Neurosci. 2007 27 5837-5844. 

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