Assessment of entrepreneurial territorial attractiveness by the ranking method

The relevance of the researched problem is caused by existence of differentiation in development of separate regional units (urban districts and municipalities) within the region. The aim of this article is to offer a method, which determines the level of differentiation in development of various components of the region, and also in producing a set of recommendations for local government administration to achieve higher level in development of their territories. The leading approach to the research of this problem is the ranking method of regional units according to cumulative socioeconomic potential and integral risk. The results of the research are: the estimation procedure for entrepreneurial territorial attractiveness is offered and tried out, with the use of municipal formations of the Samara region as an example; the advantages and “bottlenecks” in development of the concrete urban district are educed; specific measures for realization of advantages and (or) elimination of “bottlenecks” are offered. The materials of the research can be useful for developing strategy for improvement of the region by regional public authorities, for leveling-off of social and economic differentiation of separate regional units, and also for developing of scientifically based municipal programs of support and development of entrepreneurship. © 2016 Karpova et al

Role of coupling delay in oscillatory activity in autonomous networks of excitable neurons with dissipation

We study numerically the effects of time delay in networks of delay-coupled excitable FitzHugh Nagumo systems with dissipation. The generation of periodic self-sustained oscillations and its threshold are analyzed depending on the dissipation of a single neuron, the delay time, and random initial conditions. The peculiarities of spatiotemporal dynamics of time-delayed bidirectional ring-structured FitzHugh-Nagumo neuronal systems are investigated in cases of local and nonlocal coupling topology between the nodes, and a first-order nonequilibrium phase transition to synchrony is established. It is shown that the emergence of oscillatory activity in delay-coupled FitzHugh-Nagumo neurons is observed for smaller values of the coupling strength as the dissipation parameter decreases. This can provide the possibility of controlling the spatiotemporal behavior of the considered neuronal networks. The observed effects are quantified by plotting distributions of the maximal Lyapunov exponent and the global order parameter in terms of delay and coupling strength.Comment: 14 pages, 17 figure

Development of differentiated surgical technique for treating patients with multilevel degenerative diseases of cervical spine

Background. Currently, there is no uniform tactics for the differentiated use of dorsal decompressive-stabilizing techniques for multilevel degenerative diseases of the cervical spine, and the results of these technologies application are largely controversial.Aim. Analysis of the unsatisfactory outcomes of dorsal decompressive-stabilizing interventions in the treatment of patients with multilevel degenerative diseases of the cervical spine and development of a clinical-instrumental algorithm for differentiated surgical tactics.Material and Methods. A retrospective study included 112 patients with degenerative diseases of the cervical spine at two levels or more due to hernias of intervertebral discs, yellow ligament hypertrophy and arthrosis of facet joints, which in 2007–2014 underwent dorsal decompressive-stabilizing interventions in the volume of laminotomy with laminoplasty (LP) and laminectomy with fixation for lateral masses (LF). A correlation analysis of clinical parameters with anamnestic data, instrumental parameters, a feature of accepted surgical tactics and postoperative adverse effects.Results. In the analysis, it was established that "satisfactory" postoperative outcomes of LP are associated with a neutral or lordotic configuration of the cervical spine, the preservation of segmental movements without clinical and instrumental signs of instability. In addition, the use of LF is possible with mobile kyphotization of the cervical spine and the presence of translational instability of the cervical segments. The "unsatisfactory" postoperative results of the LP and LF are in direct correlation with the duration of the disease, the presence of myelopathic focus and rigid kyphosis of the cervical region.Conclusion. Differential use of dorsal decompressive-stabilizing techniques based on a comprehensive assessment of disease duration, configuration of the cervical spine, spinal cord condition and volume of segmental movements allows to reduce neurological symptoms, improve the level of pain and improve the functional status of patients, as well as significantly reduce the number of adverse outcomes associated with the progression of kyphotic deformity, deterioration of neurological symptoms and revision on-line decompressive-stabilizing interventions

Digital receivers for low-frequency radio telescopes UTR-2, URAN, GURT

This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. Since 1998, digital receivers performing on-the-fly dynamic spectrum calculations or waveform data recording without data loss have been used at the UTR-2 radio telescope, the URAN VLBI system, and the GURT new generation radio telescope. Here we detail these receivers developed for operation in the strong interference environment that prevails in the decameter wavelength range. Data collected with these receivers allowed us to discover numerous radio astronomical objects and phenomena at low frequencies, a summary of which is also presented.Comment: 24 pages, 15 figure

Approaches to defining scientific priorities in healthcare and medicine: the Russian experience

This paper describes the system of organization and management for healthcare and medical science in Russia. The procedures for forming scientific priorities in medicine in the post-Soviet period are described. The necessity of applying modern methods in the selection of scientific priorities is substantiate

Spallative ablation of dielectrics by X-ray laser

Short laser pulse in wide range of wavelengths, from infrared to X-ray, disturbs electron-ion equilibrium and rises pressure in a heated layer. The case where pulse duration $\tau_L$ is shorter than acoustic relaxation time $t_s$ is considered in the paper. It is shown that this short pulse may cause thermomechanical phenomena such as spallative ablation regardless to wavelength. While the physics of electron-ion relaxation on wavelength and various electron spectra of substances: there are spectra with an energy gap in semiconductors and dielectrics opposed to gapless continuous spectra in metals. The paper describes entire sequence of thermomechanical processes from expansion, nucleation, foaming, and nanostructuring to spallation with particular attention to spallation by X-ray pulse

Developing an Individual Neurosurgical Strategy in Patients With a Two-Level Cervical Degenerative Disc Disease

Background: Little is written about substantiated clinical and biometric indications for dynamic stabilization, rigid fixation, and their combinations in patients with two-level degenerative disease of the cervical intervertebral discs (IVD).Objective: To study the risk factors for poor outcomes of two-segment interventions (total disk arthroplasty, TDA; anterior cervical discectomy and fusion, ACDF; and their combination) in patients with two-level degenerative diseases of the cervical IVD; to develop a custom clinical and instrumental assessment strategy for future interventions.Materials and methods: We retrospectively analyzed the outcomes in 118 patients with a two-level degenerative disease of the cervical IVD, who underwent TDA (n = 37), ACDF (n = 41), and their combination (n = 40) from 2005 to 2015. After this analysis, we built a mixed effects logistic regression model to identify and assess the impact of various risk factors on poor clinical outcomes in each intervention.Results: TDA correlated with favorable outcomes in patients with cervical lordosis over 12 °; I–III grade IVD changes according to Pfirrmann scale; I–II grade facet joints (FJ) changes according to Pathria criteria; no FJ tropism; segmental movements amplitude > 8 °; interbody space height ≤ 6 mm, and with no central spinal stenosis/spine interventions. Favorable ACDF outcomes may be achieved in patients with cervical lordosis ≥ 7 °; more than III grade IVD changes according to Pfirrmann scale; more than II grade changes in FJ according to Pathria criteria; segmental movements amplitude ≤ 8 °; interbody space height < 6 mm. FJ tropism, central spinal stenosis, and history of spine interventions do not affect ACDF outcomes.Conclusions: An individual approach to TDA, ACDF, and their combination as well as comprehensive preoperative clinical and instrumental assessment in patients with a two-level degenerative IVD disease contribute to the effective resolution of existing neurological symptoms, which reduced the pain severity in the cervical region and upper limbs, improve the patients’ functional status and quality of life in the late postoperative period, and reduce the number of postoperative complications and reinterventions

Stem rust in Western Siberia – race composition and effective resistance genes

Stem rust in recent years has acquired an epiphytotic character, causing significant economic damage  for wheat production in some parts of Western Siberia. On the basis of a race composition study of the stem rust  populations collected in 2016–2017 in Omsk region and Altai Krai, 13 pathotypes in Omsk population and 10 in  Altai population were identified. The race differentiation of stem rust using a tester set of 20 North American  Sr genes differentiator lines was carried out. The genes of stem rust pathotypes of the Omsk population are avirulent only to the resistance gene Sr31, Altai isolates are avirulent not only to Sr31, but also to Sr24, and Sr30. A low  frequency of virulence (10–25 %) of the Omsk population pathotypes was found for Sr11, Sr24,Sr30, and for Altai  population – Sr7b,Sr9b,Sr11,SrTmp, which are ineffective in Omsk region. Field evaluations of resistance to stem  rust were made in 2016–2018 in Omsk region in the varieties and spring wheat lines from three different sources.  The first set included 58 lines and spring bread wheat varieties with identified Sr genes – the so-called trap nursery  (ISRTN – International Stem Rust Trap Nursery). The second set included spring wheat lines from the Arsenal collection, that were previously selected according to a complex of economically valuable traits, with genes for resistance  to stem rust, including genes introgressed into the common wheat genome from wild cereal species. The third  set included spring bread wheat varieties created in the Omsk State Agrarian University within the framework of  a shuttle breeding program, with a synthetic wheat with the Ae. tauschiigenome in their pedigrees. It was established that the resistance genes Sr31, Sr40,Sr2 complexare effective against stem rust in the conditions of Western  Siberia. The following sources with effective Srgenes were selected: (Benno)/6*LMPG-6 DK42, Seri 82, Cham 10,  Bacanora (Sr31), RL 6087 Dyck (Sr40), Amigo (Sr24,1RS-Am), Siouxland (Sr24,Sr31), Roughrider (Sr6, Sr36), Sisson  (Sr6,Sr31,Sr36), and Fleming (Sr6,Sr24,Sr36,1RS-Am), Pavon 76 (Sr2 complex) from the ISRTN nursery; No. 1 BC 1F2 (96 × 113) × 145 × 113 (Sr2,Sr36,Sr44), No. 14а F 3(96 × 113) × 145 (Sr36,Sr44), No. 19 BC 2F3(96 × 113) × 113 (Sr2, Sr36, Sr44), and No. 20 F 3 (96 × 113) × 145  (Sr2,Sr36,Sr40, Sr44) from the Arsenal collection; and the Omsk State Agrarian  University varieties Element 22 (Sr31,Sr35), Lutescens 27-12, Lutescens 87-12 (Sr23,Sr36), Lutescens 70-13, and  Lutescens 87-13 (Sr23,Sr31,Sr36). These sources are recommended for inclusion in the breeding process for developing stem rust resistant varieties in the region

Wheat landraces as sources of high grain quality and nutritional properties

Background. Improving the grain quality of modern spring bread wheat cultivars is a highly relevant task of breeding. To solve this problem, old and local wheat varieties (landraces) are of considerable interest. A rich collection of them is available among the plant genetic resources preserved at VIR. With this in view, the aim of this research was to identify sources of high protein, gluten, macro- and micronutrient content out of the landraces from the VIR collection for improvement of wheat grain quality through breeding.Materials and methods. Field and laboratory research were conducted in the experimental field of Omsk State Agrarian University under the conditions of the southern forest-steppe of Western Siberia in 2020–2021. Sowing was carried out on fallow on conventional sowing dates. Mineral composition in the grain of the studied landraces was analyzed at the Kurchatov Genomic Center, Novosibirsk, using atomic absorption spectrometry techniques.Results. The research results showed that landraces from different regions of Russia, Kazakhstan, Tajikistan, and Kyrgyzstan were characterized by high levels of protein (18.4–18.8%) and gluten (35.9–36.0%) in grain. Landraces from Kazakhstan had low Zn content (on average 38.3 mg/kg), while those from Kyrgyzstan, on the contrary, had high content of Zn (41.9 mg/kg) and Fe (55.1 mg/kg), and landraces from Tajikistan had high K content (3820 mg/kg). A positive relationship between the concentrations of Mg, Mn, Fe, and Zn was found in the grain of wheat landraces.Conclusion. Wheat landraces are of interest as genetic resources for the development of high-protein cultivars with improved nutritional value of grain for the milling and breadmaking industries