124 research outputs found
Russia’s economy innovative development in conditions of the import substitution
© 2018, Universidad del Zulia. All rights reserved. The article aims to investigate Russia’s economy innovative development in conditions of the import substitution. The analysis of the nomenclature of import-substituting products was carried out using the official list of priority and critical types of products, services and software in terms of import substitution and national security. As a result, the model of catching-up development which was being objectively criticized earlier, has once again taken up the leading position in the economic agenda of the state. In conclusion, the sanctions pressure exerted on Russia has affected both the current macroeconomic situation and the system of its promising technological development
Outlier detection and classification in sensor data streams for proactive decision support systems
A paper has a deal with the problem of quality assessment in sensor data streams accumulated by proactive decision support systems. The new problem is stated where outliers need to be detected and to be classified according to their nature of origin. There are two types of outliers defined; the first type is about misoperations of a system and the second type is caused by changes in the observed system behavior due to inner and external influences. The proposed method is based on the data-driven forecast approach to predict the values in the incoming data stream at the expected time. This method includes the forecasting model and the clustering model. The forecasting model predicts a value in the incoming data stream at the expected time to find the deviation between a real observed value and a predicted one. The clustering method is used for taxonomic classification of outliers. Constructive neural networks models (CoNNS) and evolving connectionists systems (ECS) are used for prediction of sensors data. There are two real world tasks are used as case studies. The maximal values of accuracy are 0.992 and 0.974, and F1 scores are 0.967 and 0.938, respectively, for the first and the second tasks. The conclusion contains findings how to apply the proposed method in proactive decision support systems
The use of screening methods as element array system improvement public health
The priority pollutants of the environment in industrial cities are such reproductive toxic substances as benzo(a)pyrene, formaldehyde, phenol and nitrogen dioxide [1]. Chemical substances, which a person confronts in the course of professional activity, may cause mutagenic and genotoxic effects and hereditary disorders. The exposure to physical factors of production environment may result in pathology. The study of harmful factor impact on the reproductive health of workers, the development of study screening methods and prevention activities is an important one. The tiered screening system was used, including socio-sanitary, physical, chemical, clinical, biochemical and cytogenetic studies. 318 men were observed - the workers of the machine-building enterprise who deal with harmful chemical and physical factors during their work and 148 workers without a contact (control group). Questionnaire screening showed that almost 70% of respondents work in contact with a chemical factor, 2/3 of respondents work in a noisy atmosphere, about 40% work with local vibration, at that 8.5% of the patients consulted a doctor concerning reproductive function disorders. The measurements of physical factors at workplaces revealed the excess of maximum permissible levels of noise and local vibration. The exceeding of maximum permissible concentrations (MPC) of benz(a)pyrene, mineral oil aerosols, nitrogen dioxide, epichlorohydrin were also revealed in the working area. The results of testosterone, lutropin and follitropin levels showed that abnormalities were found among 25.5% of the employees, including 21% of workers exposed to a local vibration. The mathematical model is developed for the estimation of reproductive disorder occurrence probability, significantly influencing factors were determined. These factors are presented by vibration impact, the experienced diseases, the activator of which could have the affinity for seminiferous epithelium, the changes of testosterone levels, the miscarriages among women in history. The noise at workplaces (87.7 + 4.5 dB) significantly affects the blood levels of testosterone (r = 0,51, p < 0.04), which may be associated with the influence on Leydig cells and hypothalamic-hypophysial system. The impact of reprotoxicants (benz(a)pyrene, mineral oil aerosols, nitrogen dioxide), may cause reproductive health damage. In order to study the reproductive health status, to determine risk groups and the development of preventive measures it is advisable to use a multi-level screening system, including questioning, the hygienic assessment of industrial environmental factors, hormonal status determination, mathematical modeling
Studying informativity of specific IgE levels to whole cow milk allergen and its components, as well as to soy and gluten in children
Successive development of immunological tolerance to cow’s milk proteins largely depends on the timeliness and validity of the elimination diet and is most difficult in IgE-mediated food allergy. From 2012 to 2017, when examining children aged 3 months to 10 years, we found some cases with high levels of specific IgE to beta-lactoglobulin that exceeded the levels of specific IgE to the whole cow’s milk allergen (the latter is often used as a screening allergen). The aim of this study was to assess the informativity of studying the levels of specific IgE to the whole cow’s milk allergens in blood serum of children at early, preschool and primary school age. We have also included gluten (gluten) and soy as possible components of early childhood nutrition into the list of allergens under study. The study involved 100 children aged 9 months to 12 years. Clinical selection criteria included presence of anamnestic data on exacerbation of atopic dermatitis, urticaria, exacerbation of rhinitis/asthma, diarrhea, constipation or abdominal pain in response to usage of cow’s milk and/or dairy products during the last 6 months. It is shown that extended study of specific IgE levels to whole cow’s milk allergen, its components, as well as to soy and gluten, increases the accuracy of laboratory diagnostics and differential diagnosis of IgEmediated form of food allergy to cow’s milk proteins, compared with determination of serum IgE to whole cow’s milk as a screening test. A detailed study of specific IgE to milk components allowed to confirm the presence of IgE-mediated form of allergy to cow’s milk in 7% of the examined children with signs of food allergy, but in absence of specific IgE to whole cow’s milk allergen. We have also shown that in 29% of cases, the level of specific IgE to milk components was higher than those to whole cow’s milk allergen. The results of this study may be of practical importance, since the form of food allergy, as well as intensity and dynamics of reduction of production of specific IgE, are accepted criteria to forecast development of tolerance to cow’s milk proteins. In addition, identification of specific allergen (including soy bean allergen) that causes the most intense production of specific IgE, may be importance for administration of a reasonable elimination diet. The most significant allergens for diagnosis and differential diagnostics of allergy to cow’s milk in children, in addition to the “whole cow’s milk, f2” preparation, are the following allergens: “whey, f236”, “beta-lactoglobulin, f77” and “soy, f14”
Analysis of the low-energy electron-recoil spectrum of the CDMS experiment
We report on the analysis of the low-energy electron-recoil spectrum from the
CDMS II experiment using data with an exposure of 443.2 kg-days. The analysis
provides details on the observed counting rate and possible background sources
in the energy range of 2 - 8.5 keV. We find no significant excess in the
counting rate above background, and compare this observation to the recent DAMA
results. In the framework of a conversion of a dark matter particle into
electromagnetic energy, our 90% confidence level upper limit of 0.246
events/kg/day at 3.15 keV is lower than the total rate above background
observed by DAMA by 8.9. In absence of any specific particle physics
model to provide the scaling in cross section between NaI and Ge, we assume a
Z^2 scaling. With this assumption the observed rate in DAMA differs from the
upper limit in CDMS by 6.8. Under the conservative assumption that the
modulation amplitude is 6% of the total rate we obtain upper limits on the
modulation amplitude a factor of ~2 less than observed by DAMA, constraining
some possible interpretations of this modulation.Comment: 4 pages, 3 figure
Puzzles of Dark Matter - More Light on Dark Atoms?
Positive results of dark matter searches in experiments DAMA/NaI and
DAMA/LIBRA confronted with results of other groups can imply nontrivial
particle physics solutions for cosmological dark matter. Stable particles with
charge -2, bound with primordial helium in O-helium "atoms" (OHe), represent a
specific nuclear-interacting form of dark matter. Slowed down in the
terrestrial matter, OHe is elusive for direct methods of underground Dark
matter detection using its nuclear recoil. However, low energy binding of OHe
with sodium nuclei can lead to annual variations of energy release from OHe
radiative capture in the interval of energy 2-4 keV in DAMA/NaI and DAMA/LIBRA
experiments. At nuclear parameters, reproducing DAMA results, the energy
release predicted for detectors with chemical content other than NaI differ in
the most cases from the one in DAMA detector. Moreover there is no bound
systems of OHe with light and heavy nuclei, so that there is no radiative
capture of OHe in detectors with xenon or helium content. Due to dipole Coulomb
barrier, transitions to more energetic levels of Na+OHe system with much higher
energy release are suppressed in the correspondence with the results of DAMA
experiments. The proposed explanation inevitably leads to prediction of
abundance of anomalous Na, corresponding to the signal, observed by DAMA.Comment: Contribution to Proceedings of XIII Bled Workshop "What Comes beyond
the Standard Model?
CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment
SuperCDMS is an experiment designed to directly detect Weakly Interacting
Massive Particles (WIMPs), a favored candidate for dark matter ubiquitous in
the Universe. In this paper, we present WIMP-search results using a
calorimetric technique we call CDMSlite, which relies on voltage- assisted
Luke-Neganov amplification of the ionization energy deposited by particle
interactions. The data were collected with a single 0.6 kg germanium detector
running for 10 live days at the Soudan Underground Laboratory. A low energy
threshold of 170 eVee (electron equivalent) was obtained, which allows us to
constrain new WIMP-nucleon spin-independent parameter space for WIMP masses
below 6 GeV/c2.Comment: 7 pages, 4 figure
Results from a Low-Energy Analysis of the CDMS II Germanium Data
We report results from a reanalysis of data from the Cryogenic Dark Matter
Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken
between October 2006 and September 2008 using eight germanium detectors are
reanalyzed with a lowered, 2 keV recoil-energy threshold, to give increased
sensitivity to interactions from Weakly Interacting Massive Particles (WIMPs)
with masses below ~10 GeV/c^2. This analysis provides stronger constraints than
previous CDMS II results for WIMP masses below 9 GeV/c^2 and excludes parameter
space associated with possible low-mass WIMP signals from the DAMA/LIBRA and
CoGeNT experiments.Comment: 9 pages, 8 figures. Supplemental material included as ancillary
files. v3) Added appendix with additional details regarding energy scale and
background
Measurement of Charged Pion Production Yields off the NuMI Target
The fixed-target MIPP experiment, Fermilab E907, was designed to measure the
production of hadrons from the collisions of hadrons of momenta ranging from 5
to 120 GeV/c on a variety of nuclei. These data will generally improve the
simulation of particle detectors and predictions of particle beam fluxes at
accelerators. The spectrometer momentum resolution is between 3 and 4%, and
particle identification is performed for particles ranging between 0.3 and 80
GeV/c using , time-of-flight and Cherenkov radiation measurements. MIPP
collected events of 120 GeV Main Injector protons striking a
target used in the NuMI facility at Fermilab. The data have been analyzed and
we present here charged pion yields per proton-on-target determined in bins of
longitudinal and transverse momentum between 0.5 and 80 GeV/c, with combined
statistical and systematic relative uncertainties between 5 and 10%.Comment: 15 pages, 13 figure
Search for inelastic dark matter with the CDMS II experiment
Results are presented from a reanalysis of the entire five-tower data set
acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the
Soudan Underground Laboratory, with an exposure of 969 kg-days. The analysis
window was extended to a recoil energy of 150 keV, and an improved
surface-event background-rejection cut was defined to increase the sensitivity
of the experiment to the inelastic dark matter (iDM) model. Three dark matter
candidates were found between 25 keV and 150 keV. The probability to observe
three or more background events in this energy range is 11%. Because of the
occurrence of these events the constraints on the iDM parameter space are
slightly less stringent than those from our previous analysis, which used an
energy window of 10-100 keV.Comment: 10 pages, 10 figures, minor changes to match published version,
conclusion unchange
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