Investigation of the influence of the symmetry of membership functions in the fuzzy controller on the quality of MPPT regulation in the photovoltaic system

The paper presents the results of the investigation of the influence of asymmetric membership functions in a fuzzy controller on the quality of MPPT regulation in the photovoltaic system. Comparison of the quality of fuzzy MPPT regulation with symmetrical and asymmetric membership functions is carried out. The results of the research showed the advantage of using asymmetric membership functions in the MPPT algorithm with fuzzy logic

Геохимические особенности годовых колец хвойных пород деревьев как индикатора изменения природно-техногенного состояния территории

Научный доклад об основных результатах подготовленной научно-квалификационной работы. В работе говорится об индикаторе, пока еще малоизученном в целях применимости, годичных кольцах деревьев, который показывает уровень накопления химических элементов в дереве, а также динамику их накопления во времени, ограниченную временным интервалом жизни дерева.Scientific report on the main results of the prepared scientific and qualification work. The work speaks of an indicator, still poorly studied for applicability, tree rings, which shows the level of accumulation of chemical elements in the tree, as well as the dynamics of their accumulation in time, limited by the time interval of a tree’s life

Разработка высокопроизводительного устройства размагничивания длинномерных изделий.

Работа посвящена разработке устройства размагничивания, реализующее метод, основанный на использовании постоянного магнитного поля, корректируемого по измеряемым в процессе размагничивания начальной и остаточной намагниченностям, является наиболее приемлемым при поточном контроле изделий, либо конвейерном размагничивании, из-за высокого быстродействия, низкого энергопотребления и достаточно высокого качества размагничивания. После проведения размагничивания остаточная намагниченность находится в рамках не препятствующих проведению сварки (менее 0,01 Тл), и не вызывает налипания ферромагнитных частиц более 0,1 мм.The work is devoted to the development of a demagnetization device that implements a method based on the use of a constant magnetic field, corrected for the initial and residual magnetizations measured during demagnetization, is most acceptable for in-line inspection of products or pipeline demagnetization, because of high speed, low power consumption and high enough quality of demagnetization. After the demagnetization is carried out, the residual magnetization is within the limits of not impeding the conduct of welding (less than 0.01 Tl), and does not cause the sticking of ferromagnetic particles more than 0.1 mm

Apnea of prematurity: from cause to treatment

Apnea of prematurity (AOP) is a common problem affecting premature infants, likely secondary to a “physiologic” immaturity of respiratory control that may be exacerbated by neonatal disease. These include altered ventilatory responses to hypoxia, hypercapnia, and altered sleep states, while the roles of gastroesophageal reflux and anemia remain controversial. Standard clinical management of the obstructive subtype of AOP includes prone positioning and continuous positive or nasal intermittent positive pressure ventilation to prevent pharyngeal collapse and alveolar atelectasis, while methylxanthine therapy is a mainstay of treatment of central apnea by stimulating the central nervous system and respiratory muscle function. Other therapies, including kangaroo care, red blood cell transfusions, and CO2 inhalation, require further study. The physiology and pathophysiology behind AOP are discussed, including the laryngeal chemoreflex and sensitivity to inhibitory neurotransmitters, as are the mechanisms by which different therapies may work and the potential long-term neurodevelopmental consequences of AOP and its treatment

MUSiC: a model-unspecific search for new physics in proton–proton collisions at √s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton–proton collision data recorded at the LHC at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 35.9fb-1, are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches

Combined searches for the production of supersymmetric top quark partners in proton–proton collisions at √s=13Te

A combination of searches for top squark pair production using proton–proton collision data at a center-of-mass energy of 13TeV at the CERN LHC, corresponding to an integrated luminosity of 137fb$^{-1}$ collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on the model, the combined result excludes a top squark mass up to 1325GeV for a massless neutralino, and a neutralino mass up to 700GeV for a top squark mass of 1150GeV. Top squarks with masses from 145 to 295GeV, for neutralino masses from 0 to 100GeV, with a mass difference between the top squark and the neutralino in a window of 30GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420GeV