A quasi-static dynamic analysis technique of Laplace transformation and a modified Gauss–Newton optimization algorithm were adopted in the proposed method.
#BACK CALCULATION OR BACKCALCULATION PORTABLE#
When a back calculation is being used in an investigation the police are required to fill out a MGDD/D form, this form is used to provide forensic toxicologists with details that will aid them in performing the back calculation. This paper presents a comparison between static and dynamic back-calculation procedures, specifically with regard to typical South African inverted pavements. To improve the accuracy of back-calculation of soil modulus using the portable falling weight deflectometer (PFWD), a viscoelastic method (VEM) overcoming the limitations of the conventional linear elastic method (LEM) was proposed. In this paper, the probabilistic approach to FWD back-calculation is used as a tool to investigate the reliability of different dynamic and static back-calculation procedures. KW - biological intercept model mathematical and computer techniques. FWD back-calculation is mathematically an inverse problem that can be approached deterministically or probabilistically. Materials and Methods Total 20 individual of Luciobarbus mystaceus species were obtained from commercial fishermen fishing in the Keban Dam Lake between October and November 2017. KW - back-calculation model mathematical and computer techniques. Alcohol Back Calculations in Drink Driving CasesĪ back calculation is a process which is carried out by a forensic toxicologist in order to determine what a person's alcohol content was at an earlier point in time.īack calculations can be carried out in cases where the analysis of evidential blood, breath or urine specimens indicate a level of alcohol in the specimen provided which is below the maximum legal prescribed limit but investigators have reason to suspect that at the time of the alleged incident the alcohol in a persons system would have exceeded the legal limit.īack calculations are usually only used in connection with investigations into serious cases where a road traffic collision results in serious injury or fatality. Back-Calculation of Layer Parameters for LTPP Test Sections Volume II: Layered Elastic Analysis for Flexible and Rigid Pavements PUBLICATION NO. Back-Calculation of Total Lengths of Luciobarbus mystaceus (Pallas, 1814) from Scale and Otolith Measurements 34 2.
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