称重计数法计算气枪弹检材数量
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摘要
为解决涉枪物证检验鉴定中大批量气枪弹的计数问题,参照文献报道中有关称重计数的计算方法,建立气枪弹称重计数的方法。使用天平对气枪弹总质量进行称量,并从气枪弹中随机抽取2批各10发称量计算单发气枪弹质量,将总质量与单发气枪弹质量的商作为气枪弹数量,并将两次抽样称重的误差进行取合。从鉴定实际需要的角度,对称重计数法的可行性进行验证与讨论,并建立气枪弹称重计数的操作流程。
Quantity determination is sometimes crucial for the gun-concerned evidence identification when a large amount of air-gun pellets are involved. Referred to the literature reports about quantity calculation by weighing and counting, a method is here set up for counting air-gun pellets through weighing. The total mass of air-gun pellets is weighed with an eligible electronic balance. Two batches of samples are randomly selected to have their respective 10 air-gun pellets measured so as to get the average weight of one air-gun pellet. The quantity of air gun pellets is calculated through division of the total mass by the average weight of one pellet. The error is also estimated through combination of the results from the two batches of randomly selected samples. Orienting to the actual requirements of identification, the above method is verified and discussed on its feasibility along with the operational procedure being put up, plus the three ways of result-expression being shown with either the pellet amount or the error range or the quantity span.
Quantity determination is sometimes crucial for the gun-concerned evidence identification when a large amount of air-gun pellets are involved. Referred to the literature reports about quantity calculation by weighing and counting, a method is here set up for counting air-gun pellets through weighing. The total mass of air-gun pellets is weighed with an eligible electronic balance. Two batches of samples are randomly selected to have their respective 10 air-gun pellets measured so as to get the average weight of one air-gun pellet. The quantity of air gun pellets is calculated through division of the total mass by the average weight of one pellet. The error is also estimated through combination of the results from the two batches of randomly selected samples. Orienting to the actual requirements of identification, the above method is verified and discussed on its feasibility along with the operational procedure being put up, plus the three ways of result-expression being shown with either the pellet amount or the error range or the quantity span.
引文
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[5]广东省珠海市中级人民法院.(2013)珠中法刑初字第12号刑事判决书[EB/OL].[2014-02-26].http://wenshu.court.gov.cn.
[6]广东省高级人民法院.(2013)粤高法刑三终字第239号刑事裁定书[EB/OL].[2014-01-06].http://wenshu.court.gov.cn.
[7]吴建国.称重法在计数收发中的妙用[J].中国计量,1998(3):27-28.
[8]詹姆斯戴根.硬物计数变得更容易[J].衡器,2001,30(1):36-41.
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[2]广东省连州市人民法院.(2016)粤1882刑初46号刑事判决书[EB/OL].[2017-02-09].http://wenshu.court.gov.cn.
[3]安徽省和县人民法院.(2016)皖0523刑初65号刑事判决书[EB/OL].[2016-05-31].http://wenshu.court.gov.cn.
[4]赵群英.一种螺母点数机:CN 105857654 A[P].2016-08-17.
[5]广东省珠海市中级人民法院.(2013)珠中法刑初字第12号刑事判决书[EB/OL].[2014-02-26].http://wenshu.court.gov.cn.
[6]广东省高级人民法院.(2013)粤高法刑三终字第239号刑事裁定书[EB/OL].[2014-01-06].http://wenshu.court.gov.cn.
[7]吴建国.称重法在计数收发中的妙用[J].中国计量,1998(3):27-28.
[8]詹姆斯戴根.硬物计数变得更容易[J].衡器,2001,30(1):36-41.
[9]陈宝琛,邓定邦.称重计数法合理计量规范的探讨[J].江苏工学院学报,1987,8(3):57-64.