Sampling systematic

Example of a systematic sampling plan for collecting samples from a lake. Each solid dot represents a sample collected from within the sampling grid. 

A sampling plan that combines judgmental sampling with systematic sampling. 

Plant-fiber identification is described in TAPPI T8 and TIO. In order to identify synthetic fibers, it usually is necessary to conduct solubihty and physical properties tests in addition to light microscopy observations. Systematic sampling is required to obtain quantitative information on sample composition. Because different types of pulps contain varying numbers of fibers per unit weight, it is necessary to multiply the total number of each kind of fiber by a relative weight factor, thereby the weight percentage that each fiber type contributes to the sample can be deterrnined. 

The idea now is to use A to systematically sample, and study the behavior of, rules in the rule space starting with one-dimensional CA. The sections below... 

Systematic sampling is one of the most commonly used sampling techniques. This type of sampling involves taking increments from the bulk material at predetermined intervals, as defined by the sampling plan. 

In systematic sampling, a sample is taken at set intervals (such as every fifth container of reagent or taking a sample of water from a fixed sample point in a flowing stream every hour). This is most commonly employed in quality assurance or (in the clinical chemistry lab) in quality control. 

Sometimes random sampling is difficult to execute, as when a stream is being monitored with a time-activated automatic remote sample collection device. Under such conditions a random start or other superimposed random time element may be substituted. The efficiency of systematic sampling improves as the population becomes better understood. Both theoretical and experimental studies of this point have been made (14). 

Clark, M., Meshkat, S., Talbot, G. T., Carnevali, P., Wiseman, J. S. (2009) Fragment-based computation of binding free energies by systematic sampling. / Chem Inf Model 49,1901-1913. 

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