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Search Results: 1 - 10 of 117644 matches for " O.Ju. Korennova "
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Clinical and cost effectiveness of preventive counseling of young patients with arterial hypertension in primary health care
M.I. Shupina,O.Ju. Korennova,E.N. Loginova
Rational Pharmacotherapy in Cardiology , 2013,
Abstract: Aim. To study clinical and cost effectiveness of training of young patients with arterial hypertension (HT) in the health school in comparison with individual counseling.Material and methods. Hypertensive outpatients (n=114) at the age of 18-27 years were included into the study. Patients were randomized into 2 groups: “Health school” and "Typical practice". “Health school” patients received special training course “School health for patients with HT." Patients of the "Typical practice" had individual consultation. Clinical and cost analysis was performed in 6, 12 and 36 months of the follow-up.Results. The total cardiovascular risk in patients of “Health school” and "Typical practice" groups after 12 months decreased from 15.85±3.47% to 7.22±2.59% and from 15.60±3.34% to 11.29±4.14%, respectively, after 36 months to 10.77±3.18% and to 11.40±3.93%, respectively. Cost of 1% reduction in the total cardiovascular risk was 3425.1 and 190.4 rubles per one patient in “Health school” and "Typical practice" groups, respectively.Conclusion. The more time after the training course passes, the more its clinical and cost effectiveness reduces. This requires a follow-up care and repeated preventive counseling of these patients.
Effects of acute physical exercise of varying intensity on lipid metabolism in middle aged men
G.E. Roytberg,I.D. Slastnikova,O.Ju. Dmitrieva,T.I. Ushakova
Rational Pharmacotherapy in Cardiology , 2010,
Abstract: Aim. To investigate effects of acute physical exercise of varying intensity on lipid metabolism in middle aged men.Material and methods. Two bouts of physical exercise of moderate and high intensity were performed in 54 clinically healthy men aged 30-45 y.o. without obesity with subsequent assessment of lipid profile (total cholesterol, high density lipoprotein cholesterol, triglyceride levels, and atherogenic index). Effect of physical exercise on the lipid profile was studied both in the whole group and in subjects with and without insulin resistance.Results. Acute physical exercise of moderate and high intensity produced beneficial effects on lipid parameters (increase in cholesterol of high density lipoprotein level and reduction of atherogenic index). Increased intensity of physical exercise caused more prominent improvement of lipid profile in subjects without insulin resistance. However subjects with insulin resistance had weaker response to physical exercise than individuals without insulin resistance did and increased intensity of physical exercise did not cause significant improvement of lipid parameters in subjects with insulin resistance.Conclusion. Response to moderate or high intensive physical exercise may depend on baseline metabolic profile. It should be taken into account under development of preventive programs for modifying risk factors of cardio-vascular diseases and type 2 diabetes mellitus.
Application of Integrated Soil Fertility Approach in the Improvement of Soil Fertility in Semi-Arid Ecology
O Ugboh, JU Ulebor
Journal of Agriculture and Social Research (JASR) , 2011,
Abstract: Nutrient level and moisture status are low in major soils of the tropical and semi arid ecology. This ecological region, to buttress the facts of its inadequacy in soil fertility and crop production, and do to these results, the soil suffers from inherent soil or land degradation, overgrazing, lack of adequate use of modern facing technologies, continuous cultivation, annual bush burning, moistures stress, and related erosion problems. Innovational practices in the management of organic matters in semi-arid soil, emphasizes, that farmers should engage in the act of recycling of organic matters, ensure that conservative tillage is operated, practice of irrigation, mulching and Alley farming are encouraged. Additionally, the use of organic and inorganic fertilizer in an integrated programme will play a major role in the solving of low nutrient level associated problems, improvement of soil texture and structure, thus boosters food production in the ecological region.
An approximation of the ideal scintillation detector line shape with a generalized gamma distribution
O. Ju. Smirnov
Physics , 2007, DOI: 10.1016/j.nima.2008.07.139
Abstract: An approximation of the real line shape of a scintillation detector with a generalized gamma distribution is proposed. The approximation describes the ideal scintillation line shape better than the conventional normal distribution. Two parameters of the proposed function are uniquely defined by the first two moments of the detector response.
Beyond Categories: A Structural Analysis of the Social Representations of Information Users' Collective Perceptions on 'Relevance'
Boryung Ju,Daniel O. O’Connor
Journal of Information Science Theory and Practice , 2013, DOI: 10.1633/jistap.2013.1.2.2
Abstract: Relevance has a long history of scholarly investigation and discussion in information science. One of its notable concepts is that of 'user-based' relevance. The purpose of this study is to examine how users construct their perspective on the concept of relevance; to analyze what the constituent elements (facets) of relevance are, in terms of core-periphery status; and to compare the difference of constructions of two groups of users (information users vs. information professionals) as applied with a social representations theory perspective. Data were collected from 244 information users and 123 information professionals through use of a free word association method. Three methods were employed to analyze data: (1) content analysis was used to elicit 26 categories (facets) of the concept of relevance; (2) structural analysis of social representations was used to determine the core-periphery status of those facets in terms of coreness, sum of similarity, and weighted frequency; and, (3) maximum tree analysis was used to present and compare the differences between the two groups. Elicited categories in this study overlap with the ones from previous relevance studies, while the findings of a core-periphery analysis show that Topicality, User-needs, Reliability/Credibility, and Importance are configured as core concepts for the information user group, while Topicality, User-needs, Reliability/Credibility, and Currency are core concepts for the information professional group. Differences between the social representations of relevance revealed that Topicality was similar to User-needs and to Importance. Author is closely related to Title while Reliability/Credibility is linked with Currency. Easiness/Clarity is similar to Accuracy. Overall, information users and professionals function with a similar social collective of shared meanings for the concept of relevance. The overall findings identify the core and periphery concepts of relevance and their relationships in terms of coreness, similarity, and weighted frequency.
MODELOS DE áRBOL DE REGRESIóN BAYESIANO: UN ESTUDIO DE CASO
O. Juárez* y E.Castells**
Revista Investigación Operacional , 2010,
Abstract: The Bayesian method for selecting regression models proposed by Chipman et al. (1998a) as well as some related results of the same authors are explored. In applications of this method, forming groups of the generated models has resulted a very useful tool (models are generated by Monte Carlo Markov Chains) so some metrics are required and here we propose a new one for grouping the models. The possibility of reducing the number of necessaries models to be generated in order to determine (with Chipman et al. (1998a) approach) a tree which give a satisfactory explanation of the data is explored by means of a simulation study. We apply the method to the data used by Denison et al. (1998) and some comparisons are made. Lastly we analyze the results of the application to the data of some socio-economical study.
Dynamic conductivity of symmetric three-barrier plane nanosystem in constant electric field
Ju. Seti,M. Tkach,O. Voitsekhivska
Condensed Matter Physics , 2011,
Abstract: The theory of dynamic conductivity of nanosystem is developed within the model of rectangular potentials and different effective masses of electron in open three-barrier resonance-tunnel structure in a constant homogeneous electric field. The application of this theory for the improvement of operating characteristics of quantum cascade laser active region (for the experimentally investigated In0.53Ga0.47As/In0.52Al0.48As heterosystem) proves that for a certain geometric design of nanosystem there exists such minimal magnitude of constant electric field intensity, at which the electromagnetic field radiation power together with the density of current flowing through the separate cascade of quantum laser becomes maximal.
Precision measurements of timing characteristics of the 8" ETL9351 series photomultiplier
O. Ju. Smirnov,P. Lombardi,G. Ranucci
Physics , 2004,
Abstract: During the test measurements of the PMTs to be used in the future Borexino experiment, the data from 2200 PMT were accumulated. The unique timing characteristics of the apparatus used and the large statistics acquired, permit resololution of the fine structure of the ETL9351 PMT time response. A method to obtain the probability density function of the single photoelectron counting from the experimental data is proposed and applied to derive the PMT average characteristics. For the first time, an analytical model of the single photoelectron PMT time response is proposed, describing all the features of the single photoelectron time arrival. The origin of the small amplitude pulses is explained.
Dynamic conductivity of symmetric three-barrier plane nanosystem in constant electric field
Ju. Seti,M. Tkach,O. Voitsekhivska
Physics , 2011, DOI: 10.5488/CMP.14.13701
Abstract: The theory of dynamic conductivity of nanosystem is developed within the model of rectangular potentials and different effective masses of electron in open three-barrier resonance-tunnel structure in a constant homogeneous electric field. The application of this theory for the improvement of operating characteristics of quantum cascade laser active region (for the experimentally investigated In$_{0.53}$Ga$_{0.47}$As/In$_{0.52}$Al$_{0.48}$As heterosystem) proves that for a certain geometric design of nanosystem there exists such minimal magnitude of constant electric field intensity, at which the electromagnetic field radiation power together with the density of current flowing through the separate cascade of quantum laser becomes maximal.
Non-perturbation theory of electronic dynamic conductivity for two-barrier resonance tunnel nano-structure
M. V. Tkach,Ju. O. Seti,O. M. Voitsekhivska
Physics , 2012, DOI: 10.5488/CMP.14.43702
Abstract: The non-perturbation theory of electronic dynamic conductivity for open two-barrier resonance tunnel structure is established for the first time within the model of rectangular potentials and different effective masses of electrons in the elements of nano-structure and the wave function linear over the intensity of electromagnetic field. It is proven that the results of the theory of dynamic conductivity, developed earlier in weak signal approximation within the perturbation method, qualitatively and quantitatively correlate with the obtained results. The advantage of non-perturbation theory is that it can be extended to the case of electronic currents interacting with strong electromagnetic fields in open multi-shell resonance tunnel nano-structures, as active elements of quantum cascade lasers and detectors.
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