反馈在射击教学训练中的作用

反馈,在各项运动技能形成中,都具有极其重要的作用。同理,反馈在人民警察手枪射击教学训练中,能够有效地提高教学效果、促进学员射击技能的形成,使学员尽快掌握动作要领、纠正不足和错误的动作,从而提高动作质量、提高射击水平。     

Accuracy and Reproducibility of Bullet Trajectories in FARO Zone 3D

With three-dimensional (3D) laser scanning technology and software packages, the practice of documenting and measuring bullet trajectories has benefited from greater accuracy and reproducibility. This study investigated the accuracy and reproducibility of the bullet trajectory tools in the software package, FARO Zone 3D (FZ3D). Twelve participants were provided laser scanner data for 21 bullet trajectories on drywall panels with impact angles between 25° and 90°. When the impact plane was manually aligned by the operator, 75% of the absolute errors were within 0.91° and 0.98° for the azimuth and vertical angles, respectively. The vertical angle improved to 0.47° when impact plane alignment was taken with respect to gravity (no operator influence). Thus, manual alignment is shown to be subject to greater error than alignment with gravity. However, this study shows that the accuracy and reproducibility of the FZ3D bullet trajectory tools to be comparable with previous research studies.     

毛细管气相色谱柱的保养与维护

综述了毛细管气相色谱柱的保养与维护.就毛细管柱分析使用中常遇到的一些问题,例如如何避免色谱柱的断裂,固定相的损伤,色谱柱的污染以及如何解决一些不能避免的问题和应采取的措施、步骤.     

Evaluation of shooting distance by AFM and FTIR/ATR analysis of GSR

The techniques of atomic force microscopy (AFM) and Fourier transform infrared attenuated total reflectance (FTIR/ATR) spectroscopy are applied to the analysis of gun-shot residue (GSR) to test their ability to determine shooting distance and discrimination of the powder manufacturers. AFM is a nondestructive technique that is capable of characterizing the shapes and size distributions of GSR particles with resolution down to less than a nanometer. This may be useful for estimation of the shooting distance. Our AFM images of GSR show that the size distribution of the particles is inversely proportional to the shooting distance. Discrimination of powder manufacturers is tested by FTIR/ATR investigation of GSR. Identifying the specific compounds in the GSR by FTIR/ATR was not possible because it is a mixture of the debris of several compounds that compose the residue. However, it is shown that the GSR from different cartridges has characteristic FTIR/ATR bands that may be useful in differentiating the powder manufacturers. It appears promising that the development of AFM and FTIR/ATR databases for various powder manufacturers may be useful in analysis and identification of GSR.     

谈手枪射击训练中的教学方法

手枪射击技战术训练不是普通的课堂教学,教师除了教会学员掌握正确的手枪射击技战术技能,更重要的是培养他们坚强的意志、良好的心理素质和顽强的作风,以适应实战需要。而良好的技能、精湛的技艺只有靠平时刻苦训练取得。     

加强基层民警射击技能训练之我见

公安工作性质决定了基层民警必须熟练掌握射击技能。本文以实例探讨了基层民警射击机能普遍较差的原因，提出了强化基层民警射击技能训练的重要性，并有针对地介绍了有效的训练方法。     

提高公安院校学员实战射击技能的方法

射击技能是公安民警所必须掌握的最基本、最重要的警务技能。如何使公安院校学员掌握牢固、精湛的射击技能并能合理应对日渐复杂的犯罪案件是公安教育改革的一项重要内容。文章结合在实际公安工作中进行射击时所面临的各种复杂环境与情境,分析了在实战射击教学中物理模拟训练与数学模拟训练的差异性,为提高公安院校学员的实战射击技能提出了相应的对策。     

射击实弹教学的心理训练

第一次进行实弹射击训练的学员普遍感到新鲜、兴奋,抑或难以消除的恐惧感,这种心态将会对射击教学质量造成一定的影响。对学员进行射击实弹教学的心理训练,将有助于消除学员的不良心理,提高技术动作的准确性,提高实弹射击成绩。     

硬盘腔体故障的分析及处理

本文就硬盘的腔体故障的原因进行了深入的分析与探讨 ,并提出了对上述故障的修复及处理办法     

试论警察射击心理素质的培养

警察射击心理素质训练直接关系到警务人员射击技术水平,是提高学员综合素质的重要环节。因此,必须克服目前教学工作中忽视心理素质作用的思想,纠正将警察实战射击心理训练等同于运动射击心理训练的做法,将心理素质训练摆到应有的位置。应在＂练为战＂的思想指导下,通过创设各种模拟实战心理训练情景,培养学生过硬的心理素质,并在不同的教学训练阶段采取相应的心理训练方法,使教学和实践有机相结合,培养高素质的公安大学生射击人才。