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Linear discriminant analysis based on gas chromatographic measurements for geographical prediction of USA medical domestic cannabis

Al Bakain Ramia Z., Al-Degs Yahya S., Cizdziel James V., Elsohly Mahmoud A.

Acta Chromatographica

2021

Vol. 33, no. 2

179--187

Fifty four domestically produced cannabis samples obtained from different USA states were quantitatively assayed by GC–FID to detect 22 active components: 15 terpenoids and 7 cannabinoids. The profiles of the selected compounds were used as inputs for samples grouping to their geographical origins and for building a geographical prediction model using Linear Discriminant Analysis. The proposed sample extraction and chromatographic separation was satisfactory to select 22 active ingredients with a wide analytical range between 5.0 and 1,000 µg/mL. Analysis of GC-profiles by Principle Component Analysis retained three significant variables for grouping job (Δ9-THC, CBN, and CBC) and the modest discrimination of samples based on their geographical origin was reported. PCA was able to separate many samples of Oregon and Vermont while a mixed classification was observed for the rest of samples. By using LDA as a supervised classification method, excellent separation of cannabis samples was attained leading to a classification of new samples not being included in the model. Using two principal components and LDA with GC–FID profiles correctly predict the geographical of 100% Washington cannabis, 86% of both Oregon and Vermont samples, and finally, 71% of Ohio samples.

Coherence in control of information security: coins

Monfelt Y.

Management and Production Engineering Review

2011

Vol. 2, No. 4

33-49

The message is a norm-related and experience based policy guidance about control of authorization and authenticity in communications for sustainability in life cycle system's ubiquitous principal - agent relation's dependable behavior with respect to reliability, maintainability and maintenance concerning confidentiality; i.e., confidence or secrecy, integrity and availability. The performance is fed back through monitoring, account and audit of fault caused incidents, errors and rule failure consequent effect events. Knowledge management, for entities' evaluated requisite variety width in cognition of situation event contexts, is the primary condition for authorization of the system entities' right to access role adequate assets; i.e., adapted and accredited communication architecture applications.