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Among the 33 deaths, 17 (52%) were certified from a heroin/methadone or opiate overdose, 4 (12%) from drug misuse, 4 (12%) unascertained, and 8 (24%) unrelated to acute toxic effects of drug use.


Second, the unascertained measure was defined and credible identification was set up.


First, the basic knowledge of the unascertained sets was introduced briefly.


Therefore, a mathematical tool, the unascertained measure, was introduced.


Safety assessment of platform loadout procedures based on unascertained measures

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 Based on the unascertained mathematical theory and with electronic countermeasures taken into consideration, a study is made on the evaluation index system and measuring methods, and on how to make identification and sequencing. An evaluation model of jamming effect on radar is set up based on the unascertained effect measurement. The model has been employed in the analysis of a case of active jamming and has been proved successful. This model is perfect, and the evaluating result is reasonable,... Based on the unascertained mathematical theory and with electronic countermeasures taken into consideration, a study is made on the evaluation index system and measuring methods, and on how to make identification and sequencing. An evaluation model of jamming effect on radar is set up based on the unascertained effect measurement. The model has been employed in the analysis of a case of active jamming and has been proved successful. This model is perfect, and the evaluating result is reasonable, with a high resolving power. It is suitable for evaluating the jamming effect on radar.\;  在未确知数学理论基础上 ,结合电子对抗的特点 ,研究了雷达干扰效果的评价指标体系和度量方法 ,以及如何识别、排序的问题。建立了基于未确知效果测度的雷达干扰效果评价模型 ,并结合有源干扰的一个实例分析 ,获得了较为成功的应用。未确知效果测度评价模型严谨 ,评价结果合理、精细、分辨率高 ,适合于雷达干扰效果的评价  The dynamic characteristic analysis model of antenna structures was built,in which the structural physical parameters and geometrical dimensions were all considered as unascertained variables.And a structure dynamic characteristic analysis method based on the unascertained factor method was given.By the mathematics expression of unascertained factor and the principles of unascertained rational number arithmetic,the computational expression of structural characteristic was developed.At... The dynamic characteristic analysis model of antenna structures was built,in which the structural physical parameters and geometrical dimensions were all considered as unascertained variables.And a structure dynamic characteristic analysis method based on the unascertained factor method was given.By the mathematics expression of unascertained factor and the principles of unascertained rational number arithmetic,the computational expression of structural characteristic was developed.At last,an example was given,in which the possible values and reliabilities of the unascertained structure characteristics were obtained.The rationality and validity of the presented method are demonstrated.  构建了物理参数和几何参数同时具有未确知性的天线结构动力特性分析模型,并提出了基于未确知因子的结构动力特性分析方法;利用未确知因子的数学表述和未确知有理数的运算规则,推导出结构特征值的计算表达式。算例给出了未确知性结构的特征值可能值及其可信度的计算结果,表明该方法的可行性和有效性。  
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