Kongzhi yu Juece/Control and Decision (ISSN:1001-0920) is a monthly peer-reviewed scopus indexed journal originally founded in 1986. It is sponsored by the Ministry of Education, china and Northeastern University, china. Kongzhi yu Juece/Control and Decision (ISSN:1001-0920) has always adhered to the correct purpose of running the journal, and has been committed to gathering and disseminating excellent academic achievements, inspiring technological innovation, and promoting the development of disciplines in my country.Aiming at major national needs and international frontiers, this journal has published a large number of original and high-level research result. The journal was selected into the "China Science and Technology Journal Excellence Action Plan Project" in December 2019.In the future, it will strive to build an open innovation, collaborative integration.
With the widespread application of Unmanned Aerial Vehicle (UAV) in various fields, the problem of interference with their Global Navigation Satellite System (GNSS) signals is becoming increasingly serious, which puts forward higher requirements for network security situational awareness. This paper proposes an Integration Algorithm of Support Vector Machine and K-Nearest Neighbor (IASK) for network security situational awareness of UAV GNSS signal interference. This algorithm combines the advantages of Support Vector Machine (SVM) and K-Nearest Neighbor (KNN) algorithms in binary classificati
The present study consists of numerically studying the torque generated by a gravitational vortex turbine (GVT) with 3 relationships between the diameter of the tank and the diameter of the outlet hole and with an H-Darrieus turbine as rotor. The relationship that presented the highest torque generated was 18% at an angular speed of 25rpm. The maximum torque generated was 0.18 Nm where it presented a great difference between the other ratios 0.12 Nm and 0.08 Nm for the ratio of 16% and 14% respectively. This is due to the vortex of air formed in the tank, where it completely floods the rotor b
The Active Noise Control System is carried out by measuring variations in the measuring distance. The method used in the research used the spherical method. The aim of the research is to obtain noise reduction that propagates in the circle. The Active Noise Control device used functions to reduce noise from noise sources. This tool is a self-designed device consisting of 6 units which function to produce sound to counteract noise originating from the source. The source of noise in this research is the USU Generation III NVC Unmanned Aircraft with a 2-stroke engine with the DLE Gas Engine-30 se
In this article, the authors present a detailed analysis of Russian tender aggregators. It is proposed to consider which innovative solutions are used by Russian systems and how they can be useful for world practice. The key similarities and differences of the tender systems will also be described, which will identify the strengths and weaknesses of each model.
The paper discusses the problem of creating a composite indicator for assessing the effectiveness of recommendation system algorithms. This indicator was developed by combining several metrics using the entropy method. The study is based on testing a set of 12 algorithms and 3 datasets. Foreach combination, several criteria used in practice for evaluating recommendation systems were applied. The results indicate that the composite indicator is a useful tool for assessing algorithm performance. It was found that algorithm quality varies depending on dataset size and other characteristics. The g