Критеріальне моделювання якості функціонування автоматичних систем керування

В даній статті пропонується метод отримання критерію якості функціонування автоматичних систем керування, оснований на поєднанні теорії марковських процесів та принципів критеріального моделюванняThe method of getting criteria quality functioning of automatically control systems based at association of the theory of Markov processes and criterion modeling is considered in given article

Формирование ценовых заявок электростанций с учетом адресных потерь мощности в условиях энергорынка

В работе рассмотрены метод и алгоритм формирования ценовых заявок с учетом транзитных потерь мощности в электрических сетях энергетической системы, что позволяет усовершенствовать метод оптимального распределения нагрузок между станциями и повысить эффективность функционирования рынка электроэнергии

Formation of electric stations price applications taking into account address power losses in conditions of energy market

The given research considers the method and algorithm for formation of price applications taking into account transit power losses in electric network of energy system, that enables to improve the method of optimal distribution of loads among stations and increase the efficiency of electric energy market functioning

Оптимальне керування нормальними режимами ЕЕС з врахуванням чутливості втрат потужності і технічного стану регулюючих пристроїв

Досліджено існуючі математичні методи визначення чутливості втрат потужності до зміни навантаження в вузлах. Запропоновано при оптимальному керуванні нормальними режимами (НР) електроенергетичних систем (ЕЕС) на етапі формування керуючих впливів враховувати чутливість втрат потужності в вітках до зміни навантаження в вузлах та технічний стан регулюючих пристроїв. Вдосконалено математичну модель коефіцієнту якості функціонування трансформаторів з регуляторами під навантаженням (РПН).The existing mathematical methods for determining power losses sensitivity to a change in the nodes. An optimal control in normal mode (HP) electric power systems (EPS) at the stage of control actions take into account the sensitivity of the power losses in branches to a change in the condition of sites and control devices. Improved mathematical model coefficient as function transformers with regulators under load (RPN)

Antiseptics: analysis of assortment, technologies of compounding and using

Proper hand hygiene disrupts the spread of a numerous infections and is therefore a guarantee of good human health. Wide use of antiseptics by the public raises questions about their effectiveness, safety and availability. At the same time, the culture of hand hygiene is a priority for all spheres of society. The aim of the work is to study the range of antiseptics on the pharmaceutical market of Ukraine and assess the peculiarities of their use, to compound the antiseptic for hands of optimal composition and provide its quality control. The study used information retrieval, pharmacological, organoleptic, physical and chemical, graphic and statistical methods. Based on the analysis of information sources, the active ingredients and their optimal concentrations in the composition of antiseptics of industrial and extemporaneous production have been established. According to the results of this stage of work, four prescriptions of antisepticswith different compositions were selected for further compounding.It was found that positive results of quality control according to the organoleptic and physical and chemical parameters were received for the solution compounded using 96%ethanol and paying attention to key technological features that are decisive in the compounding of non-aqueous solutions and affect the quality of the product. The problematic issues of registration and circulation of antiseptics in Ukraine were identified as a result of the development of normative documents. Its consequence is the spread of unscrupulous practices of selling products that do not have a proven disinfection effect. The active components of industrial and extemporaneous antiseptic agents were determined based on the analysis of literary sources. It was established that most of the products recommended for home production did not meet the requirements of regulatory documents in terms of composition and concentration of active substances. This is a sign of the spread of unreliable information among the population, which can harm health. The need to comply with the rules for dosing ingredients and the technological features of manufacturing of non-aqueous solutions is substantiated. It was established that the required concentration of ethanol in the finished product is achieved when preparing solutions according to prescription N 3, which included 96% ethanol according to the results of the physical and chemical control. The presence of disinfection corners at National Pirogov Memorial Medical University, Vinnytsya certainly popularizes hand hygiene among students of higher education. This is indicated by the high frequency of students' use of the products that were placed in the appropriate places. At the same time, it was established the need to conduct educational work among students, which will contribute to increasing the level of awareness of the regulatory framework of registered disinfectants, their proper composition, labeling and method of use

The Majorana Project

Building a \BBz experiment with the ability to probe neutrino mass in the inverted hierarchy region requires the combination of a large detector mass sensitive to \BBz, on the order of 1-tonne, and unprecedented background levels, on the order of or less than 1 count per year in the \BBz signal region. The MAJORANA Collaboration proposes a design based on using high-purity enriched Ge-76 crystals deployed in ultra-low background electroformed Cu cryostats and using modern analysis techniques that should be capable of reaching the required sensitivity while also being scalable to a 1-tonne size. To demonstrate feasibility, the collaboration plans to construct a prototype system, the MAJORANA DEMONSTRATOR, consisting of 30 kg of 86% enriched \Ge-76 detectors and 30 kg of natural or isotope-76-depleted Ge detectors. We plan to deploy and evaluate two different Ge detector technologies, one based on a p-type configuration and the other on n-type.Comment: paper submitted for the 2008 Carolina International Symposium on Neutrino Physic

Highly deformed 40^{40}Ca configurations in 28^{28}Si + 12^{12}C

The possible occurrence of highly deformed configurations in the $^{40}$Ca di-nuclear system formed in the $^{28}$Si + $^{12}$C reaction is investigated by analyzing the spectra of emitted light charged particles. Both inclusive and exclusive measurements of the heavy fragments (A $\geq$ 10) and their associated light charged particles (protons and $\alpha$ particles) have been made at the IReS Strasbourg {\sc VIVITRON} Tandem facility at bombarding energies of $E_{lab} (^{28}$Si) = 112 MeV and 180 MeV by using the {\sc ICARE} charged particle multidetector array. The energy spectra, velocity distributions, and both in-plane and out-of-plane angular correlations of light charged particles are compared to statistical-model calculations using a consistent set of parameters with spin-dependent level densities. The analysis suggests the onset of large nuclear deformation in $^{40}$Ca at high spin.Comment: 33 pages, 11 figure

Identification of Radiopure Titanium for the LZ Dark Matter Experiment and Future Rare Event Searches

The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a detector containing a total of 10 tonnes of liquid xenon within a double-vessel cryostat. The large mass and proximity of the cryostat to the active detector volume demand the use of material with extremely low intrinsic radioactivity. We report on the radioassay campaign conducted to identify suitable metals, the determination of factors limiting radiopure production, and the selection of titanium for construction of the LZ cryostat and other detector components. This titanium has been measured with activities of $^{238}$U$_{e}$~$<$1.6~mBq/kg, $^{238}$U$_{l}$~$<$0.09~mBq/kg, $^{232}$Th$_{e}$~$=0.28\pm 0.03$~mBq/kg, $^{232}$Th$_{l}$~$=0.25\pm 0.02$~mBq/kg, $^{40}$K~$<$0.54~mBq/kg, and $^{60}$Co~$<$0.02~mBq/kg (68\% CL). Such low intrinsic activities, which are some of the lowest ever reported for titanium, enable its use for future dark matter and other rare event searches. Monte Carlo simulations have been performed to assess the expected background contribution from the LZ cryostat with this radioactivity. In 1,000 days of WIMP search exposure of a 5.6-tonne fiducial mass, the cryostat will contribute only a mean background of $0.160\pm0.001$(stat)$\pm0.030$(sys) counts.Comment: 13 pages, 3 figures, accepted for publication in Astroparticle Physic