Hands-on versus computer simulation methods in chemistry

1987 ◽  
Vol 64 (3) ◽  
pp. 232 ◽  
Author(s):  
Donald R. Bourque ◽  
Gaylen R. Carlson
Keyword(s):  
Computer Simulation ◽  
Simulation Methods ◽  
Hands On

scholarly journals Computer simulation methods of redundant measurements with the nonlinear transformation function

2019 ◽  
Vol 2 (5 (98)) ◽  
pp. 16-22
Author(s):  
Volodymyr Shcherban ◽  
Ganna Korogod ◽  
Vitaliy Chaban ◽  
Oksana Kolysko ◽  
Yury Shcherban’ ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Transformation Function ◽  
Nonlinear Transformation ◽  
Simulation Methods

Examining Coordination in Disaster Response Using Simulation Methods

2015 ◽  
Vol 12 (4) ◽  
pp. 891-914 ◽  
Author(s):  
Xuesong Guo ◽  
Naim Kapucu
Keyword(s):  
Computer Simulation ◽  
Performance Assessment ◽  
Petri Net ◽  
Disaster Response ◽  
Process Analysis ◽  
Critical Factor ◽  
System Optimization ◽  
Simulation Methods ◽  
Average Delay ◽  
Disaster Exercise

Abstract Purpose of the research is to examine coordination in disaster response by computer simulation using Petri net. We addressed issues on coordination in disaster response by focusing on interorganizational processes. Defining the processes according to disaster exercise, we developed the model based on Stochastic Petri Net. Index items, including average delay time and busyness probability, were introduced to facilitate discussion. Simulation demonstrated utilization of process analysis in performance assessment of collaborative disaster response. Since fragmentation is critical factor hindering efficient response, its remedy or elimination should be focused for system optimization.

scholarly journals Appendix: Mathematical approaches to the evaluation of the flux of γ-aminobutyrate in brain tissue in vitro

1970 ◽  
Vol 116 (3) ◽  
pp. 461-467 ◽  
Author(s):  
B. J. Hammond ◽  
T. Julian ◽  
Y. Machiyama ◽  
R. Balázs
Keyword(s):  
Computer Simulation ◽  
Tricarboxylic Acid Cycle ◽  
Preceding Paper ◽  
Experimental Results ◽  
Simulation Methods ◽  
Metabolic Compartmentation ◽  
A Value ◽  
Time Courses ◽  
Cortex Slices

In the preceding paper (Balázs, Machiyama, Hammond, Julian & Richter, 1970) the flux of γ-aminobutyrate (GABA) was found, in guinea-pig brain-cortex slices incubated in glucose–saline medium, to represent about 10% of the total tricarboxylic acid cycle flux, as opposed to other estimates, which are as high as 40%. However, the latter value was deduced from experimental results by methods that made no allowance for the metabolic compartmentation of glutamate: a mathematical investigation was therefore undertaken to show that this omission necessarily leads to an overestimation of GABA flux. The magnitude of this over-estimation was shown by computer simulation methods to be of such an order as to bring the corrected value into agreement with the lower value. Computer simulation methods were also used to evaluate the GABA flux from the experimental results presented by Balázs et al. (1970) and a value of 0.0315μmol/min per g wet wt. was obtained. This value was also shown to be consistent, in the simulated system, with the experimentally observed time-courses for the radioactivity and quantity of aspartate. Since there is now evidence that GABA is itself a metabolically compartmented intermediate this possibility was considered mathematically, but it was found that in this case the assumption of compartmentation had little effect upon the value of GABA flux deduced on the basis of GABA homogeneity.

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