Implementing cognitive architecture plan-image to search tasks in agent models

In the article we discuss some questions connected with cognitive structures and behavior algorithms of an artificial social agent. We suggest a cognitive Plan-Image architecture that is based on the concepts of TOTE model by Miller, Galanter and Pribra

Simulating budget system in the agent model of the Russian Federation spatial development

In this paper we present methods, data and algorithms for simulating budget system in the model of the Russian Federation spatial development. We show the place of this task in methodology of our research and give a brief overview of the background results. We determine revenues and expenditures of the budgets and funds on the basis of federal laws, Budget and Tax codes of the Russian Federation. For validation of the budget system algorithms in the model we conduct retrospective modeling for the federal budget and the budget of Belgorod region in 201

The first experience of low-invasive correction of Pectus Carinatum at children by Abramson procedur

Purpose: justification of relevance of use of a low-invasive method of correction across Abramson and improvement of treatment of pectus carinatum (PC) at children. Materials and methods. The result of treatment of 7 boys aged from 12 up to 17 years operated from 2012 to 2017 concerning PC in MRRCI was analyzed. 4 of them were operated in the open way on Ravich. A lot of sequels during and after operation led to refusal of open methods of correction of PC. In the period from 2015 to 2017 three children were operated by Abramson’s method. Dynamometer researches proved the efficiency of Abramson’s method. The multispiral computer tomography with 3D reconstruction was carried out and allowed to avoid possible intraoperative complications. During the operation were used epidural and general anesthesia. Allocation of ribs in places of bracing of stabilizers to a periosteum without injury of a pleura allowed to reach the best stability and reliability of fixatives, reduce a pain syndrome and avoid a possible injury of intrathoracic organs. Epidural anesthesia in combination with analgetics intramusculary provided optimum anesthesia during the postoperative period. This method leads to faster recovery after operation, 5 days vs 10 days. Results: the catamnesis collected from 1 month till 2 years is positive. At 1 patient the early postoperative period was complicated by the intense pheumothorax caused by a rupture of a bulla of an apex of the right lung. The thoracoscopic atypical resection of the violent changed site of a lung is executed. Inputs. Using of Abramson’s method allowed to reduce quantity possible intra-and postoperative complications, achieve amazing cosmetic result and reduce terms of hospitalization by 2,5 times

Structural relaxation of E' gamma centers in amorphous silica

We report experimental evidence of the existence of two variants of the E' gamma centers induced in silica by gamma rays at room temperature. The two variants are distinguishable by the fine features of their line shapes in paramagnetic resonance spectra. These features suggest that the two E' gamma differ for their topology. We find a thermally induced interconversion between the centers with an activation energy of about 34 meV. Hints are also found for the existence of a structural configuration of minimum energy and of a metastable state.Comment: 4 pages, 2 figures, submitted to Phys. Rev. Let

Exciton Spin Dynamics in Semiconductor Quantum Wells

In this paper we will review Exciton Spin Dynamics in Semiconductor Quantum Wells. The spin properties of excitons in nanostructures are determined by their fine structure. We will mainly focus in this review on GaAs and InGaAs quantum wells which are model systems.Comment: 55 pages, 27 figure

Prevalence of occult hepatitis B infection among blood donors in Saint Petersburg

The aim of this study was to assess the prevalence of occult hepatitis B infection among blood donors in St. Petersburg, as well as to characterize the identified virus isolates. The study material was represented by 2800 blood plasma samples collected in 2019 from blood donors living in St. Petersburg. The ELISA study for HBV marker rate consisted of HBsAg, anti-HBs IgG, anti-HBcore IgG. HBV DNA was analyzed by nested PCR with real-time hybridization-fluorescence detection on three targets allowing to determine virus DNA at low viral load, including HBsAg-negative chronic hepatitis B. Hepatitis B serological markers were detected in 69.43% of those surveyed, HBsAg was found in 0.43% of individuals, and all of which donated blood first time. A significant excess of the anti-HBcore IgG antibodies occurrence among primary donors (15.1%) compared with repeated/regular donors (7.48%) was shown. The prevalence of virus DNA in the group was 3.14%, including 2.71% of cases in HBsAg-negative CHB. Based on phylogenetic analysis of 88 isolates, HBV subgenotypes were determined in the following order: D1 and D2, 40.91% each, D3 and A2, 9.09% each. While determining the serological subtype in detected isolates, the serotype ayw3 (52.27%) vs ayw2 (46.59%) and adw2 (10.23%) prevailed. Drug resistance mutations, including compensatory ones, were detected in six examined patients (6.82%). In all genotype D isolates, multiple amino acid substitutions were identified in the RT, SHB, MHB, LHB, and Core regions; mutations in the preCore region were detected in 21.59% samples. In the MHR of the HBV genotype D genome, twenty-six positions were identified in which amino acid substitutions occurred, and all isolates showed modifications at positions 113, 114, 131, 134, 159, 161, 168, in 76 — at position 122, in 68 — at position 127, in 36 — at position 118, in 24 — at position 128. In HBV A2 isolates, mutations T113S, S143T, Y161F were identified. Nine isolates in the preCore region showed a polymorphism including a stop codon W28*W; in five isolates the W28S substitution was shown in the same position, and the W28*S variant was found in one more sample. The high incidence of HBsAg-negative CHB cases among blood donors, as well as the predominance of HBV isolates that simultaneously carry mutations resulting in diagnostic failure of HBsAg tests and prophylactic failure of immunoglobulin or vaccines and virus reactivation, mutations that contribute to disease progression obviously pose a threat to health and require to be further examined

Circularly polarized electroluminescence from silicon nanostructures heavily doped with boron

The circularly polarized electroluminescence (CPEL) from silicon nanostructures which are the p-type ultra-narrow silicon quantum well (Si-QW) confined by {\delta}-barriers heavily doped with boron, 5 10^21 cm^-3, is under study as a function of temperature and excitation levels. The CPEL dependences on the forward current and temperature show the circularly polarized light emission which appears to be caused by the exciton recombination through the negative-U dipole boron centers at the Si-QW {\delta}-barriers interface