Basic block conditional

This basic construct is used for all CEXG operations. In the case of operations that will be performed only if some condition hdds (that is, inside conditional basic blocks), these are translated into conditional assigmnents. 

There are several possibilities for combining these three moieties to give dyad 1 such as routes A and B shown in Fig. 2. In route A, the critical step is the cyclization which, however, causes complete hydrolysis of the PDI part (arrow in Fig. 2, compound 1-a) under basic reaction conditions. On the other hand, regarding route B, by using the unsymmetrical compounds PMI-PMA and TMI-TMA as the building blocks to avoid the cyclization, it was not possible to achieve the target compoimd 1 via statistical imidization. It thus needs to be decided which chromo-phore, PDI or TDI, should be connected to the linker first. Both PDI and TDI tend to... 

Control operators are a special set of operators that specify which precedence edge is taken when leaving a basic block. In addition to specifying control flow, control operators also specify the data flow characteristics of the control action which values are used, and which new values are produced as a consequence of the control action. Specific control operators support conditional control flow, loops, and procedures. 

The SELECT control operator supports conditional control flow by providing a multiway branch. A SELECT operator uses an input value to transfer control to one of two or more branches, where each branch is composed of a set of basic blocks. Control is transferred back to the SELECT operator after the basic blocks in the branch have executed. 

In basic list scheduling as is done for microcode compaction, an operator cannot be scheduled in a control step until all of the operators that provide it with inputs are scheduled in previous control steps. An operator that meets these conditions is said to be data ready. To support cascaded operator scheduling, this definition must be modified. An operator can be placed in the same control step as an operator that provides it with an input if the accumulated delay does not exceed the clock period. With these modifications, an operator Xa in basic block Rj is data ready for placement into control step csij when for each input ia,b a one of the following conditions is met ... 

HIS uses a modified global data-flow analysis based loosely on du-chaining (definition-use) [2]. Since most high-level synthesis literature does not address this step in detail and often restricts it to so called basic blocks (e.g., [38]), and since data-flow analysis can be computationally expensive, we include the exact algorithm used below. It first computes the reachability for each value assigned and then its lifetime. HIS performs global data-flow analysis not restricted to basic blocks. In this case the control flow (conditional execution and iteration) must be taken into account ... 

For each interface operation JANUS checks for consistency among the diagrams. First, they must have the same basic block structure (conditionals and loops) with compatible entry conditions for each diagram segment. Second, label data items must be present on both sides and appear as inputs on one side and outputs on the other. Finally, after adding these data dependencies, the timing constraints must be checked to ensure no inconsistencies were introduced. For example, a violation would occur if two data dependencies caused a deadlock between the two interfaces. 

For the example of Fig. 3, the intra-block v is the interval from the entrance of Bs to instruction 4, the inter-block is the interval from 3 to the exit of B3. The most essential parameter of each basic block n, the post condition 4> n) depends on the successive blocks, and can be calculated through the system of linear equations for each block n and its immediate successors, this relationship holds ip[n) = J2m succ(n) m)) x where is a variable associ-... 

This set of linear equations has a unique solution and can be solved efficiently. In Fig. 3, we also labels the post condition for each basic block. For example, the post condition of B3 is 0.75. Finally, the effect e of each masking range can be calculated via Equation (1). And the masking probability function can also be determined easily, i.e. if the previous accessing instruction i is located in the same block of mask inserted, then cj) i) = 1, otherwise cj) i) = 0(/3(i)). 

Data flow analysis is often defined over a flowchart representation of the program a flowchart is essentially a CFG where the nodes are individual statements, or conditions, rather than basic blocks. (For our model language in Section 2.1 the nodes are assignments, conditions, or skip statements.) The edges in the flowchart are the program points a data flow analysis computes a set of data... 

As synthesis research progressed, scheduling and binding techniques evolved to relax the basic block restriction by considering also the conditional control-... 

Spinnerette Process. The basic spinning process is similar to the production of continuous filament yams and utilizes similar extmder conditions for a given polymer (17). Fibers are formed as the molten polymer exits the >100 tiny holes (ca 0.2 mm) of each spinnerette where it is quenched by chilled air. Because a key objective of the process is to produce a relatively wide (eg, 3 m) web, individual spinnerettes are placed side by side in order that sufficient fibers be generated across the width. This entire grouping of spinnerettes is often called a block or bank, and in commercial production it is common for two or more blocks to be used in tandem in order to increase the coverage and uniformity of laydown of the fibers in the web. 

The ASME code requires every pressure vessel that can be blocked in to have a relief valve to alleviate pressure build up due to thermal expan sion of trapped gases or liquids. In addition, the American Petroleum Institute Recommended Practice (API RP) 14C, Analysis, Design, Installation and Testing of Basic Surface Safety Systems on Offshore Production Platforms, recommends that relief valves be installed at vari ous locations in the production system and API RP 520, Design and Installation of Pressure Relieving Systems in Refineries, recommends various conditions for sizing relief valves. 

Hairspray is formulated to hold hair in place and keep it shiny, without flaking off, without failing, even in humid conditions. Yet it must retain the ability to be washed out of the hair easily for at least forty-eight hours, and it must not clog the spray can s nozzle. Complex polymers are needed to perform all of these tasks well. The basic building blocks of these polymers are the same ones found in acrylic paints and white glue. But they are put together in a different way. 

While alkane metathesis is noteworthy, it affords lower homologues and especially methane, which cannot be used easily as a building block for basic chemicals. The reverse reaction, however, which would incorporate methane, would be much more valuable. Nonetheless, the free energy of this reaction is positive, and it is 8.2 kj/mol at 150 °C, which corresponds to an equihbrium conversion of 13%. On the other hand, thermodynamic calculation predicts that the conversion can be increased to 98% for a methane/propane ratio of 1250. The temperature and the contact time are also important parameters (kinetic), and optimal experimental conditions for a reaction carried in a continuous flow tubiflar reactor are as follows 300 mg of [(= SiO)2Ta - H], 1250/1 methane/propane mixture. Flow =1.5 mL/min, P = 50 bars and T = 250 °C [105]. After 1000 min, the steady state is reached, and 1.88 moles of ethane are produced per mole of propane consmned, which corresponds to a selectivity of 96% selectivity in the cross-metathesis reaction (Fig. 4). The overall reaction provides a route to the direct transformation of methane into more valuable hydrocarbon materials. 

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