[摄入乙醇计算中的不确定性估计]
1Samara State Medical University, Samara, Russia.
Sudebno-meditsinskaia ekspertiza
|December 14, 2023
概括
一种新方法估计了使用Widmark公式计算摄入乙醇的不确定性. 一个酒精计算器程序提供了法医评估的置信区间.
科学领域:
- 法医毒理学 法医毒理学
- 药理动力学 药理动力学
背景情况:
- 维德马克公式是估计血液中酒精含量的标准方法.
- 准确的不确定性估计对于可靠的法医解释至关重要.
研究的目的:
- 开发一种方法来估计基于Widmark公式的摄入乙醇计算中的不确定性.
- 创建一个计算机程序来实现这种不确定性估计方法.
主要方法:
- 摄入乙醇质量的不确定性估计方程的分析构造.
- 使用Widmark运动模型进行数学分析.
- 开发了一个C#计算机程序,酒精计算器V 5.0.0.
主要成果:
- 通过使用标准偏差,推导出摄入乙醇质量的不确定性估计方程.
- 创建了酒精计算器V 5.0应用程序.
- 该程序以任何概率计算摄入乙醇估计的置信误差间隔.
结论:
- 开发的不确定性估计方程和软件适用于法医医学评估.
- 推用于评估口服乙醇的动力学.
更多相关视频
相关概念视频
00:59Uncertainty: Overview
560
In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
560
02:46Uncertainty in Measurement: Reading Instruments
38.2K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
38.2K
00:59Propagation of Uncertainty from Random Error
698
An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
698
01:10Propagation of Uncertainty from Systematic Error
528
The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
528
00:58Significant Figures in Calculations
10.5K
Uncertainty in measurements can be avoided by reporting the results of a calculation with the correct number of significant figures. This can be determined by the following rules for rounding numbers:
10.5K
01:27Margin of Error
4.1K
The margin of error is also called the maximum error of an estimate. The margin of error is the maximum possible or expected difference between the observed sample parameter value and the actual population parameter value. For proportion, it is the maximum difference between the value of sample proportion obtained from the data and the true value of population proportion. As the true value of the population parameter is not known, the margin of error is calculated using the sample statistic.
4.1K