THEORETICAL ISSUES
The article considers some topical issues of theory and practice of production of forensic radio-technical examination. It outlines the objects of forensic radiotechnical examination, including, in particular, radio-electronic safety and arming mechanisms of homemade explosive devices; special technical means for concealed information obtainment; scanning radio receivers, electromagnetic field indicators, radio interference generators, etc.
On the basis of explored investigative and expert practice the typical and special questions raised before an expert under production of forensic radiotechnical examination are highlighted. It has been established that electronic control units of passive safety systems are provided for forensic radiotechnical examination.
The examination of unmanned aerial vehicles and unmanned vessels equipped with radio-electronic control systems is emphasized as an upcoming trend, which determines the future tasks aimed at developing relevant methodological recommendations for their study and training of forensic experts as well.
The article analyzes the need of the law enforcer in special knowledge in the fields of occupational safety and health and industrial safety as well as the implementation of this law enforcement requirement by forensic institutions of the Russian Ministy of Justice in the form of a new kind of forensic examination – occupational safety and health examination.
METHODS AND TOOLS
The article considers the methodological approaches developed by forensic institutions of the Russian Ministry of Justice for forensic examination of videophonograms (videograms/phonograms) when solving the tasks of their comparison in order to determine the fact of obtaining the videophonograms from the original one. The presented methods are applicable to solving a wide range of tasks, including: determining presence or absence of changes in video recordings, describing visual environment in the video, as well as characterizing the acoustic environment based on audio recordings and other similar tasks. The methodology produced by the Department of forensic video and audio examination of the Russian Federal Centre named after professor A.R. Shlyakhov of the Ministry of Justice of the Russian Federation can be used in particular to study phonograms as part of complex forensic examination of musicmaking objects and of criminalistic examination of video and sound recordings.
The article considers a number of theoretical and applied issues related to solving the task of computer editing identification in the process of forensic examination of electronic images of documents. The possibility of computer editing identification by means of digital image processing is demonstrated in specific examples including: a) methods based on correction and analysis of particular sections of the image tonal range (shadows, midtones and lightings) as well as the entire tonal range; b) methods based on the analysis of additional inside information (metadata) stored in files; c) methods of visual examination; d) methods of least significant bits analysis; e) methods based on some of the principles of the JPEG format (Error Level Analysis).
The principles of operation and limitations of methods used to identify computer editing are given as well as the possibility of their application for working with PDF and JPEG files.
There is also shown the study of possible use of methods to identify the signs of editing after an attempt to conceal them by adding noise and deliberately degrading the quality through repeated compression.
The examples of specific software use (specialized programs, graphic editors) are described in relation to examination of electronic images of documents in particular expert situations.
The article provides the basics of solving the task of establishing the causal relationship of damage to wheeled vehicles with the event that led to their occurrence. The methodological approaches addressed in the article can be used in the compendium of forensic vehicle commodity methods currently being developed by the Department of vehicle commodity examination of the RFCFS named after professor A.R. Shlyakhov of the Ministry of Justice of Russia.
TOPIC OF THE DAY
The article considers the issues of forensic support for investigation of crimes committed by “Kiev regime”, using the example of the Forensic Centre of the Investigative Committee of the Russian Federation, and reveals basic methods and directions of the complex work. It also illustrates the process of reorientation of expert units’ activities taking into account the priorities of the special military operation and provides an analysis of the results of work on high-profile criminal cases.
FORENSIC CASEWORK
The article provides a classification of modern firmware allowing for use of the writing instruments to reproduce handwritings. Its architecture and design features are considered. The technical capabilities for simulation of separate elements of handwriting objects are assessed.
The article deals with the issues of automation and computerization of forensic handwriting examination and handwriting studies with regard to the introduction of new information technologies – the artificial neural networks – into the expert production. The main purpose of the scientific work is to develop handwriting examination methods that help investigators and judges recognize illegible handwriting in case materials. It substantiates the idea of setting up an automated information retrieval system (IRS) for handwriting examination objects containing handwriting reference samples of those persons who passed the Unified State Exam. The advantages and disadvantages of such handwriting samples are discussed in terms of their completeness, reliability, sufficiency and comparability. Necessary management and legislative decisions are proposed to be taken in order to set up the relevant repository. In addition to providing handwriting reference samples for comparative analysis in the framework of handwriting examination, the handwriting samples repository solves another important task – it contains big data allowing for neural networks training which, in its turn, is capable of solving various identification and diagnostic tasks of forensic handwriting examination. The training data are subject to markup and systematization, and the article suggests the basis for their markup. An algorithm for two-stage recognition of illegible handwriting by neural networks is proposed: the one based on the graphical characteristics of the manuscript and the other one related to morphological and syntactic features of the written speech, which is based on computer vision technologies and the language model of the Russian language. The author presents his own systems of diagnostic and identification features and rules for their calculation, the application of which contributes to solving the tasks assigned to experts.
The article discusses some methodological aspects of a systematic approach to the results of construction design study in the process of forensic examination.
The author describes the problem and points out the determinacy of the system reflecting the object of forensic examination, provides the description of relevant properties of the project (as an object of reality) subject to accounting, systematization and formalization under system analysis. The conditions of formalization, criteria and definitions of basic concepts corresponding to the solved expert task are proposed.
Methods of quality level assessment of the project documentation through the integral feature “project readiness” and a way to study the causal relationships of the project with the external environment, properties of buildings and structures causes.
The article is recommended to scientists, experts and specialists working in the field of forensic construction and technical examination.
Use of special purpose land zones (SPLZ) in their modern form is regulated by the Land Code of the Russian Federation since 2019. But the limitations associated with territorial regimes arose much earlier and are subject to examination as part of the evidence in land-related court cases. The purpose of this article is to disclose SPLZ as a spatial object as well as its three components: a zone-forming object, a geospatial object and prohibition regime. Each of them is analyzed from the point of view of the study object within the framework of forensic land surveying examination. It is shown that correct definition of properties, characteristics and composition of the object is necessary to formulate a reliable answer by the expert to the question of the court. The article describes the multidimensionality of spaces that can be examined in relation to SPLZ, identifies legal issues when analyzing the limitation regime in such zones and addresses the topics of their life cycle.
The article presents the based on expert practice, approaches to conducting expert integrative diagnostics (situational analysis) of an event, stages recorded by a video surveillance system from multiple angles and with varying image details. The main areas of expert situational analysis are examined as a method for investigating and reconstructing a captured event, as well as issues related to preparation of video materials for forensic photo and video examination at the Forensic Center of the Investigative Committee of the Russian Federation.
БИБЛИОГРАФИИ И ИСТОРИЧЕСКИЕ ОЧЕРКИ
The article presents the documents compiled by the outstanding national criminalist Sergei Mikhailovich Potapov in 1945 and 1948 where he justifies the need to organize an independent Institute of Forensics on the basis of the forensic laboratory which functioned under his head as part of the Institute of Law of the USSR Academy of Sciences. The author of the article points to the importance of publication of these materials and also proves the need to conduct research in the context of the national history of forensiс activities.
ISSN 2587-7275 (Online)