Results 261 to 270 of about 12,123,915 (305)

The Control of Fermentation Processes

IFAC Proceedings Volumes, 1985
Abstract A survey of the control of fermentation processes operated in fed-batch mode is Presented. Truely optimal conditions can only be found by minimizing for maximizing) a cost criterion subject to the constraints imposed by a mathematical model of the process. This approach leads to the design of a tracking controller, or servomechanism as it is
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Control of polymerization processes

IFAC Proceedings Volumes, 1980
Abstract This paper presents a survey of the control of commercial continuous and batch polymerization plants, by conventional means as well as with the help of processcomputers, PLC’s and microcomputers.
K. Hoogendoorn, R. Shaw
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Rheometry for Process Control

1993
The uniform shape of a biscuit, the performance of a fuel oil in a burner and the ability to spin fibres from a polymer resin all rely on the ability to control rheological properties during processing. Moreover, rheological properties are useful as indicators of primary material characteristics; for example, the concentration of solvent in a paint ...
T. O. Broadhead, J. M. Dealy
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Process control and communication

Proceedings of the second symposium on Operating systems principles - SOSP '69, 1969
The paper contains a description of the structure of processes and the interprocess communication facility implemented within a general purpose operating system. Processes within the system operate asynchronously. The communication facility allows a process to signal another process, to send information to it, to cause it to be suspended or to cause it
Arthur J. Bernstein, G. D. Detlefsen, R. H. Kerr   +2 more
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Importance of Process and Control in Statistical Process Control

1992
We consider a process, or a system, working in time that can be in a number of states. Some states are more desirable than others. The process has to be inspected to detect undesirable states and to avoid the penalties of operating in these undesirable states.
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Biosensors in process control

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1987
Abstract Improvement in bioprocess control will require development of monitors for a wide range of cell-growth and downstream-process parameters. These requirements are examined in terms of the development and application of biosensor devices and physical measurement techniques.
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On Normal Control Processes

Journal of Optimization Theory and Applications, 1974
The concept of normality for a control process represented by an ordinary differential equation dx/dt – A(t)|x = B(t)u(t) was introduced by J. P. LaSalle to ensure uniqueness of time optimal controls. It presents a theorem that states that if L is normal for C and LC is closed then L is also essentially normal for C.
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The need for integrating statistical process control and automatic process control

2014 IEEE International Conference on Industrial Engineering and Engineering Management, 2014
Statistical Process Control (SPC) and Automatic Process Control (APC) are two different methods for quality improvement and process adjustment that have been developed in isolation from each other and applied within different industries. SPC minimizes variability by monitoring and eliminating the assignable causes of variation whereas APC achieves the ...
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Controlled Branching Processes

Theory of Probability & Its Applications, 1974
Sevast'yanov, B. A., Zubkov, A. M.
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Origin of the heaviest elements: The rapid neutron-capture process

Reviews of Modern Physics, 2021
John J Cowan, Christopher Sneden, J E Lawler   +2 more
exaly