The paper discusses the challenges and directions of development of microchips with a flip-chip technology. The features and properties of polymer and LTCC substrates are considered. The main characteristics of microchips developed at the SRISA RAS are presented. The "System-in-Package" technology and its advantages are described.

The effects of random fluctuations of an alloying impurity on the electrophysical characteristics of silicon field GAA nanotransistors with different radii of the working area are investigated. It is shown that transients with a smaller radius are characterized by a decrease in the average value and variation of the subthreshold slope and the DIBL effect, thereby increasing resistance to short-channel effects. On the contrary, the relative variations of the transistor drain current increase with decreasing diameter, which is associated with a decrease in the conductivity of the working area with narrower cross-sections. The absolute fluctuations of the flow current depend significantly on the amount of impurity penetrating into the working area. To determine the causes of fluctuations in the flow currents of silicon field GAA nanotransistors, statistical characteristics of the source/drain series resistance and low field mobility were studied. These parameters critically affect the current spread of the transistor drain at the same time. To offset the influence of the diffusion mechanism of the alloying impurity into the working area, it is recommended to limit the level of doping of the drain/source areas and use relatively large cross-sections of the working area from the range of possible ones. This will ensure stable electro-physical characteristics of transistors with high parry of shortchannel effects.

The quality of random tests generation depends on the choice of random number generator. Testing popular generators using the Pearson chi-square test shows that a uniform distribution with a significance level of 70% or higher is observed for only half of the samples. For this reason, to obtain the necessary coverage, you need to increase the volume of tests. A method is proposed to increase the uniformity of distribution for random number generators, based on filtering the sample. Selection of filter parameters allows you to obtain the desired uniformity of distribution with a moderate number of rejects.

In this paper we describe results of virtual disk I/O performance tests in GNU Linux/QEMU/KVM environment and propose optimization methods that improve use of the system page cache. The authors have developed a utility for dynamic analysis and optimization of virtual disk usage. Testing has shown that this utility can provide more than 2x acceleration for mixed I/O workloads on SSDs.

A model of a cognitive autonomous agent that cognizes simple properties of nature is constructed and analyzed. It is assumed that the agent develops the ability of primitive thinking; in particular, the agent has the ability to predict future events in the external world and has an elementary feeling of causality. The agent forms concepts characterizing the external world, observes and analyzes phenomena of the external world. An illustrative computer model of a cognitive autonomous agent using its abilities to perform certain useful work has been constructed and analyzed.

In this work, models of interacting autonomous agents are studied. Biologically inspired models are studied; agents ensure the protection of their own territory in these models. In particular, it is shown that two agents placed in a cellular world are capable to divide this world into two approximately equal sections, each section representing the “property” of one agent. Each agent protects its section, threatening the other agent. Cases of collective defense by relatively weak agents of their territory from predators are also analyzed.