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GA/T 1678-2019: Forensic sciences - Technical specifications for examination of shoe sole wear feature in forensics
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Forensic sciences - Technical specifications for examination of shoe sole wear feature in forensics
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GA/T 1678-2019
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Basic data | Standard ID | GA/T 1678-2019 (GA/T1678-2019) | | Description (Translated English) | Forensic sciences - Technical specifications for examination of shoe sole wear feature in forensics | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 6,635 | | Date of Issue | 2019 | | Date of Implementation | 2019-12-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1678-2019: Forensic sciences - Technical specifications for examination of shoe sole wear feature in forensics
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Forensic sciences - Technical specifications for examination of shoe sole wear feature in forensics
ICS 13.310
A92
Public Safety Industry Standard of the People's Republic of China
Forensic Science Technical Specification for Sole Wear Characteristics Inspection
Published on October 14,.2019
2019-12-01 Implementation
Issued by the Ministry of Public Security of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some content of this document may involve patents. Publication of this document
The institution does not assume responsibility for identifying these patents.
This standard was proposed by the National Criminal Technology Standardization Technical Committee Trace Inspection Sub-Committee (SAC/TC179/SC9) and
Be in charge.
This standard was drafted by. Physical Evidence Appraisal Center of the Ministry of Public Security.
The main drafters of this standard. Liu Jin, Ban Maosen, Jiang Xuemei, Liu Weiping, Hu Shuliang, Fu Huanzhang.
Forensic Science Technical Specification for Sole Wear Characteristics Inspection
1 Scope
This standard specifies the technique for inspecting shoe prints and shoes through the wear characteristics of the soles.
This standard applies to the inspection of shoe prints and shoes in the field of forensic science.
2 Principle
Through statistical analysis of the three-dimensional shoe prints formed by tens of thousands of people of different ages, heights, occupations, etc., it was found that different people wear shoe shapes
The shape and location of the sole wear are different.The combination relationship of the sole wear characteristics formed by the same person is similar regardless of the type of shoes worn.
The combination of the shape and location of the sole wear formed by the same person wearing the same shoe type and size is basically the same, only the size of the wear surface (ie.
There is a difference. Sole wear characteristics are determined by the foot shape and walking habits of the person wearing the shoe. The same person is relatively stable, and different people are different.
3 Requirements for inspection objects
3.1 At least one shoe print extracted on site is complete.
3.2 The examinee wears his own shoes or new shoes to make a shoe print sample, the material and pattern structure of the shoe, the object of the remaining shoe print, and the attached objects
The quality, movement method and other conditions should be similar to the conditions of the shoe prints left on the site, and more than 3 samples of the examinee's shoe prints should be made.
3.3 The examinee's barefoot prints, shoe print samples and shoes from which samples are made.
4 Equipment, laboratory and environmental requirements
4.1 Equipment
4.1.1 Photographic equipment for recording shoe prints, digital cameras or optical cameras with optical zoom function of more than 5 million pixels.
4.1.2 Illumination light source with adjustable brightness.
4.1.3 Electrostatic extraction instrument.
4.1.4 Press box, press paper, gypsum powder, ruler, protractor, sub-gauge, special pencil, transparent film, grid film, copy film.
4.1.5 Magnifying glass and stereo microscope.
4.2 Laboratory and environmental requirements
4.2.1 Can carry out non-destructive disinfection on the inspection materials and samples.
4.2.2 With light distribution and ventilation conditions.
5 Operation steps
5.1 Separate inspection
5.1.1 First inspect the morphological characteristics of the on-site shoe prints, and then inspect the morphological characteristics of the examinee's shoe print samples.
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