Papers by Keyword: Algorithm

Abstract: The use of Unmanned Aerial Vehicles (UAVs) is increasing as their usage enhance many activities in our modern world. These include their specific roles in warfare, surveillance, agricultural activities, entertainments with attendant economic importance. In areas grappling with insecurity challenges due to banditry, kidnappings, oil spillage and theft, farmers and herdsmen clashes, utilizing more than one UAV in an area for surveillance is not only good but more advantageous. If many UAVs are used in an area at the same time, they are termed swarm or group of UAVs. Their operations in this manner, are seen as more scalable and reliable mode of using UAVs in current and future applications. Thus, usage of multiple UAVs that operate together as a cohesive unit are redundant and scalable, performing tasks that would be challenging or inefficient for a single UAV to accomplish. However, operating a group of UAVs as one unit can become expensive and risky if they are not properly coordinated. The UAVs may collide, causing catastrophic damage and requiring costly repairs. The need for autonomous coordination therefore comes from the vast number of vehicles, which might be intrinsic members of the system as a whole. Also, all UAVs in the swarm are to contribute to the effective execution of task without wasting resources. These imply that an intelligent coordination algorithm that implements awareness for swarm UAVs to avoid risky states is required. This paper presents the development and implementation of an algorithm for intra-swarm collision avoidance by treating each UAV in a swarm unit as individual agent capable of a homogenous number of tasks modelled as contours using their field of view and received signal strength indication.

Abstract: The fundamental algorithms of many additional applications, including those that deal with machine learning, signal processing, image processing, and video processing, depend heavily on addition units. In addition to their intrinsic value, addenda are essential for many mathematical operations such as division, multiplication, squaring, and comparison. The parallel prefix adder (PPA) is among the fastest adders available. The efficient parallelization implementation of Parallel Prefix Adders (PPAs) in the carry production (G) and propagation (P) phases may be responsible for their fast performance. A PPA approximation based on estimates from POs is presented in this work. Each of these requires less energy than the others. Keywords—Adder, Signal processing, Algorithm, Parallel Prefix Adder,

Abstract: An algorithm for predicting the intensity of sorption of gaseous materials released into the atmosphere as a result of an accident is proposed. The algorithm consists of three hierarchical levels: monitoring the parameters of gaseous material emission, predicting the consequences of gaseous material emission before and after sorption, and making a management decision. The first hierarchical level includes 4 blocks: obtaining information from the chemical reconnaissance group and the facility representative on the type, amount of hazardous gaseous materials, release intensity and scale of the accident; obtaining information from the hydrometeorological service on temperature, atmospheric pressure, wind direction and speed in the accident area; processing the information received; information on the availability of forces and means for sorption of hazardous gaseous materials. The second hierarchical level also includes 4 blocks: readiness of forces and means for sorption of hazardous gaseous materials; calculation with sorption; calculation without sorption; determination of the boundaries of the chemical damage zone according to the established criteria. At the third hierarchical level, there is 1 block: making a management decision. The software implementation of the proposed algorithm was carried out. The use of the developed algorithm and its software implementation will increase the speed and accuracy of predicting the consequences of the release of hazardous gaseous materials in an accident.

Abstract: The article presents modelling of spherical elements based on the developed computer model. We recorded the main combinations of spherical particles during filling, which are formed in the hopper. It was found that the most likely combination that occurs when modelling spherical elements consists of three balls. It should be noted that in the cross-section of such a combination passing through the center of the balls, an equilateral triangle is formed. And in the cross-section of the structure, which consists of four spherical balls, a rhombus is formed, if you connect the centers of these spherical elements. It is worth noting that from this formed combination of spherical elements, it can be seen that the rhombus forms two smaller equilateral triangles that fix the process of pushing the spherical balls apart. In turn, the process of pushing spherical elements apart made it possible to fix the contact between spherical elements, as well as to state the stable position of each (individual) particle. This paper also presents the main fragments of encoding the source text of a 3D computer model for modelling spherical elements, which made it possible to optimize the model parameters. It was found that from the obtained data on the distribution of coordination numbers for different volume fillings of spherical elements, it follows that the largest filling was 72 %, which corresponds to the state when 112 lobules have an average coordination number of 3,92.

Abstract: The article analyzes and develops an algorithm for the operation of the powder backfill process using vibration oscillations. The results of the study make it possible to predict the main properties of particles of any shape. The developed computer simulation model also provides for the superposition of horizontal and vertical oscillations. It should be noted that the difference between them is that the main one for the implementation of horizontal oscillations is the X - coordinate, and for vertical ones – the Y - coordinate. It is also important that the model algorithm provides for simultaneous application of vibration oscillations, which makes it possible to study the influence of the history of the backfill process. It should also be noted that in this scientific study, a number of experiments were conducted, the change in porosity during the imposition of oscillations was studied, and graphs of the obtained experimental dependences were constructed. Porosity from the main parameters of the bunker, in particular: width and height, is also studied. The obtained results made it possible to record the optimal porosity of the backfill with a reliable deviation error (± 1%).

Abstract: The goal of this article is to demonstrate how smart contracts can be leveraged via blockchain technologies. This will enable us to create a bridge between management and the materials used in the construction industry. It is all too common for construction projects to encounter a number of problems along the way, including a lack of communication between builders, laborers, and vendors. As a result of these issues, the proposed timelines and quality of construction end up being compromised. Oftentimes, stakeholders involved in the project are not quite aware of the quality and quantity of materials that will be used to complete the project. It is precisely this problem that we aim to solve through the use of blockchain technology. As a result of the use of blockchain technology, smart contracts offer transparency and trust to their stakeholders. In order to achieve our primary objective, we intend to leverage the advantages of blockchain. This will enable us to ensure clear visibility of construction materials, deadlines, subcontractors and any other elements that are part of a construction project.

Abstract: The flat grinding of low-rigidity prismatic workpieces side surfaces is investigated. Algorithm of determination of optimal conditions for low-rigidity prismatic workpieces flat grinding has been developed. The optimization of parameters in the range of allowable values is carried out with the view of ensuring the maximum process efficiency. Mathematical models for determination of maximum elastic deformation of prismatic workpieces when fixing and machining are presented.

Abstract: An algorithm for identifying the structure and parameters of the aggregation model of additive systems is presented. Simulation modeling is used. For each alternative, the numbers of the strength levels of the materials that are included in the analyzed structure are determined. the scheme of identification of the adaptive structure of the analyzed object is presented. Algorithms of intelligent decision-making support when forming the structure of an object are presented.

Abstract: Worldwide, natural fiber insulation is in high demand, offering not only thermal comfort but also soundproofing. Another important aspect for which these biodegradable materials is popular is that it presents no health risk. Due the soft texture, natural fibers can be introduced very simply in any type of construction. Regardless of the vertical or inclined mounting, the stapling or gluing of the material gives stability. For example, the wool insulation is made from natural fibers, washed and treated. These wool fibers are held together either mechanically or using up to 12% polyester fibers to form semi-rigid tiles/mattresses or rollers. With a higher price than mineral wool, natural insulation is ideal for eco-friendly wooden houses. Depending on the type of construction, the wool can be mounted in a single layer or several layers, of different thicknesses [1]. For the evaluation of the thermal efficiency of the wool panel’s insulation four variants of insulating panels based on 100% wool were accomplished. Using a specialized simulation program, it is found that the heat losses through the walls themselves represent 86% of the total heat loss and the heat losses through the windows/doors to the outside represent 14% of the total heat losses.

Abstract: The evolution of ideas about materials is analyzed: the initial accumulation of data, experience and skills in the production of new material (the emergence of new technology); identification of patterns of influence of various factors on the properties of the material with the involvement of fundamental sciences (the formation of a new technology); obtaining building material with a given level of quality (development of an effective technology ); identification of the technological process and the construction of an adequate model of “recipe-technological factors - structure - quality of the material”. In models of structural material science, the existence of certain hierarchical structures of objects considered as systems is assumed; model selection is determined by the objectives of the structural description of the object at each scale level. The shift of paradigms based on the basic models of a continuous self-developing environment to the side of paradigms based on models of a structured self-developing environment based on the ideas and methods of a systematic approach and synergetics is indicated. The approaches to the fundamentalization of the synthesis of materials based on their own experience in designing materials for special purposes are presented: the presentation of the material in the form of a complex system (at first - poorly structured with conflicting goals and criteria); quality assessment of composite materials; formalization of kinetic processes; material quality management; minimization of dimension of criterion space; multi-criteria optimization.