• MAINTENANCE OF TECHNICAL SYSTEMS IN THE FUNCTION OF SAFETY AT WORK

    pg(s) 51-54

    Safety engineering is consistently promoted and there is an evident need for improvement and development. The maintenance process is dependent on the method of editing and organizing the setup and execution of such kind commitments.
    Working with the maintenance system itself determines the manner of maintenance.
    Тhe contractor’s responsibility for providing a high level efficiency of system maintenance because the process involves detecting and reducing degradation and restoring the functions of the system in working order.
    The purpose of this paper is to overcome the shortage of updating data for occupational safety for maintenance, knowledge and to introduce new methods to protect workers and the working environment, as well as monitoring the current trends and standards.

  • SPATIAL TECHNOLOGIES FOR CRISIS MANAGEMENT

    pg(s) 46-50

    Over the last decades the impact of natural disasters to the global environment is becoming more and more severe. In this context, satellite remote sensing, along with Geographic Information Systems (GIS), has become a key tool in flood risk management analysis. Remote sensing for supporting various aspects of flood risk management was investigated in the present thesis. In particular, the research focused on the use of satellite images for flood mapping and monitoring, damage assessment and risk assessment.

  • Types of bulletproof vest. Classification

    pg(s) 43-45

    This report proposes a classification of the bulletproof vest according to various features, which is based on a study and analysis of modern threats and the use of vest by military, police and other units. This classification would allow for a quick, easy, adequate and reasoned choice of the appropriate vest kind and type depending on the tasks and the environment of operation.

  • INNOVATIVE INVESTIGATIONS OF THE CRIME SCENE USING 3D SCANNERS

    pg(s) 39-42

    Innovative solutions that can be applied in contemporary forensic science, including the examination of the place of the incident or crime, are still being sought. One of them is the preservation of evidence by means of 3D scanners. In Europe, 3D scanners have got, among others, Police services of the following countries: Switzerland, Germany, France, Spain and Italy In the paper, the results of research on the preservation of the crime scene using 3D scanning techniques have been presented. The research used Creaform hand scanners, both laser and structural light, Smarttech3D portable 1.3MPix, a scanner on the measuring arm – FARO Laser ScanArm AND
    TERRESTIAL scanners (Faro, Leica, Z + F). The accuracy and precision of scanners were carried out on a certified measurement pattern. The obtained accuracy results for the tested scanners are within the accuracy range given by the manufacturers in the technical specifications of the devices. To examine the scanners’ resolution, an object with a complicated shape and many small elements was used. It was examined how the tested scanners behave when attempting to scan surfaces generally considered as hard to scan surfaces. Attempts have also been made to use a 3D structural light scanner to scan snow tracks. The possibilities of combining scans from a portable scanner (Go! SCAN50, Smarttech) and a scanner on a measuring arm (Faro), with scans obtained from long-range were examined. It has been found that it is possible to supplement clouds of points acquired in 3D scanning technology with photos from digital cameras, detailed scans of selected traces and precise geographical locations.

  • RESEARCH ALGORITHM FOR THE EFEICIENCY OF AN INDEPENDENT POWER SOURCE

    pg(s) 171-173

    It has been created an algorithm that tracks the stages of constructing an independent chemical power source. It has been given consideration to the selection and design of the composite components, as well as the solving of construction tacks. Attention is paid to the mechanical-dynamic and climatic tests, which are carried out in order to prove the working capacity for both of the components and the whole unit as a final product.

  • COMPARATIVE ANALYSIS OF THE ARMAMENT AND EQUIPMENT SUPPORT MODULES IN THE FIELD OF COMMAND AND CONTROL INFORMATION SYSTEMS OF NATO ARMIES

    pg(s) 163-167

    In the paper is made a comparative analysis of the armament and equipment support modules in the field of information systems for command and control of NATO armies and the main functions of each information system for maintenance of the logistical assurance.

    The classification of information systems is made depending on the integration capabilities with Microsoft products ,as well as depending on the capabilities of deploying emerging technologies such as remote monitoring, remote control, and more.

  • THE RESULTS OF BLAST LOADING OF REINFORCED CONCRETE SPECIMENS WITH VARYING FIBRE TYPES AND CONTENT

    pg(s) 168-170

    The experiment report presents the results of the field tests of fiber-reinforced concrete (FRC) and reinforced concrete specimens which were performed by research team from Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic in cooperation with the Czech Army corps in the military training area Boletice. The tests were performed using real scale reinforced concrete precast slabs (6×1.5×0.3m) with varying fibre content, fibre type, fibre strength and concrete strength class and 25 kg of TNT charges placed at a distance from the slab for better simulation of real in-situ conditions. The slabs were recorded using a high speed framing camera during the blast loading. The instrumentation enabled us to study the propagation of the blast shock wave through the material, propagation of the cracks on the soffit of the specimen and the final collapse of the middle part of the slab exposed to blast loading. The sequence of the structural behaviour is documented in detail and verified by numerical modelling using the LS-DYNA solver.

  • MEASUREMENTS OF SPEED AND DIAMETERS OF DROPLETS OF FOGS WITH DEVICES, OPERATING ON THE BASIS OF THE SURFACE PHOTO-CHARGE EFFECT

    pg(s) 154-156

    This work is related to development of a new type of fog sensors and measurement devices. We study fogs, their properties, and especially their ability to clean different contaminants from the air, such as chemical, biological, radiological and nuclear (CBRN) agents. In that sense, fog can be used for effective counteraction to terrorist attacks and for prevention of industrial accidents and disasters. In this paper, we present the possibility for measurements of fog parameters using the Surface photo-charge effect (SPCE) and some results obtained in that way concerning size and speed of droplets. Knowledge of these fog parameters is important in order to gain a more practical insight about the optimization of the penetration and cleaning properties of fogs used for large scale decontamination.

  • AN EXPERIMENTAL INVESTIGATION OF THE 122mm ARTILLERY SYSTEM FIRING ACOUSTIC FIELD

    pg(s) 160-162

    In the recent years, the battlefield acoustic exploration acquires a new dimension. This is due to the fact that modern weapons have a significantly increased distance of defeat, but the intelligence cannot detect such weapons at a sufficiently distance. In this connection the purpose of the present study is to investigate the near acoustic field of 122 mm artillery system firing. The collected with advanced technology equipment raw data were analyzed with the harmonic and wavelet analysis tools.

  • A MEASURING DEVICE FOR WEAK SIGNALS WITH A HIGH-IMPEDANCE INPUT – SPCE METER

    pg(s) 121-124

    Measurement device, specifically developed to capture and quantify low-amplitude surface photo-charge effect signals. It can also modulate and power a laser in various modes, and extract the processed signal as an output. The device is compatible with all of our surface photo-charge effect-based systems. The device is part of a portable system for detection of pollution in fogs or aerosols.

  • MONITORING OF THE NATURAL RADIOACTIVE FUND AND RADIOACTIVE POLLUTION – AN IMPORTANT FACTOR OF NUCLEAR SECURITY IN BULGARIA

    pg(s) 125-128

    The radioactive contamination has actual national and international importance. It is related to the increasing the prevention measures of accidents as consequences of exploring the nuclear energy for peaceful purposes, and in the military purposes as well. The optimization and management of operational systems for monitoring of radioactive background should bring the increasing of nuclear Bulgarian safety, and the quality of the population defense from expose to radiation, as a consequence of changing the characteristics of the natural radioactive background.