Electroweak corrections to ZZ-boson hadroproduction at finite transverse momentum

We calculate the full one-loop electroweak radiative corrections, of ${\cal O}(\alpha^2\alpha_s)$, to the cross section of single $Z$-boson inclusive hadroproduction at finite transverse momentum ($p_T$). This includes the ${\cal O}(\alpha)$ corrections to $Z+j$ production, the ${\cal O}(\alpha_s)$ corrections to $Z+\gamma$ production, and certain QCD-electroweak interference contributions involving a single quark trace. We recover the QCD and purely weak corrections and study the QED corrections and the QCD-electroweak interference contributions for the first time. We also consider direct and resolved photoproduction in elastic and inelastic scattering. We present $p_T$ and rapidity distributions for the experimental conditions at the Fermilab Tevatron and the CERN LHC and assess the significance of the various contributions.Comment: 31 pages, 11 figures; discussion enhanced, figures added, references added and updated; accepted for publication in Nucl. Phys.

Nonlinear response of superparamagnets with finite damping: an analytical approach

The strongly damping-dependent nonlinear dynamical response of classical superparamagnets is investigated by means of an analytical approach. Using rigorous balance equations for the spin occupation numbers a simple approximate expression is derived for the nonlinear susceptibility. The results are in good agreement with those obtained from the exact (continued-fraction) solution of the Fokker-Planck equation. The formula obtained could be of assistance in the modelling of the experimental data and the determination of the damping coefficient in superparamagnets.Comment: 7 PR pages, 2 figure

ЛІДЕРСТВО ЯК ПЕРЕДУМОВА ЕФЕКТИВНОЇ СИСТЕМИ МЕНЕДЖМЕНТУ ОРГАНІЗАЦІЇ

In the light of existing trends in modern social development (globalization, democratization, informatization) the focus on the role of the individual acquires a new significance. In the article has been grounded that leadership is the type of activity that permeates the entire management system and helps to achieve high organization’ efficiency. Understanding the phenomenon of leadership is characterized by complexity, diversity and variability, so it does not allow for any unified definition. The multiplicity of the concept of «leadership» definitions is due to different approaches to the analysis of its subject. In the article a critical analysis of approaches to defining the concept of «leadership» has been performed. The author’s definition of the «manager’s leadership» concept is offered. Manager’s leadership is the process in which the manager, as the leader of the organization, to achieve its goals together with its employees, creates a common vision of their future and organizes interaction, as well as involves organization’s employees in these goals’ implementation. The authors emphasize that in the study of the leadership’ impact on the effectiveness of the organization, it is advisable to use the concept of «managerialleadership». Management leadership is manifested primarily as a process of improving the organizational culture, which allows you to develop elements that together ensure the effective operation of the company to achieve  strategic goals. The concept of the managerial leadership’ effectiveness has been proposed. It is proved that the effectiveness of managerial leadership, which is the basis of the organization’s effectiveness, is determined by the ability to plan and implement changes in accordance with promising ideas and goals. The article highlights that successful companies understand that leadership is a managerial competence from which you can extract profits, capitalize on potential opportunities in real resources.В статье обосновано, что лидерство является тем видом деятельности, который пронизывает всю систему управления и помогает достичь высокой эффективности в деятельности организации. В статье проведен критический анализ подходов к определению понятия «лидерство». Предложено авторское определение понятия «лидерство менеджера». Авторами подчеркнуто, что при исследовании влияния лидерства на эффективность работы организации, целесообразно применять понятие «управленческое лидерство». Предложена концепция эффективности управленческого лидерства и доказано, что эффективность управленческого лидерства, которое является основой эффективности деятельности организации, определяется способностью планировать и осуществлять изменения в соответствии с перспективными идеями и целями.В статті обґрунтовано, що лідерство є тим видом діяльності, який пронизує всю систему управління та допомагає досягти високої ефективності в діяльності організації. В статті проведений критичний аналіз підходів до визначення поняття «лідерство». Запропоновано авторське визначення поняття «лідерство менеджера». Авторами підкреслено, що при дослідженні впливу лідерства на ефективність роботи організації, доцільно застосовувати поняття «управлінське лідерство». Запропоновано концепцію ефективності управлінського лідерства та доведено, що ефективність управлінського лідерства, що є основою ефективності діяльності організації, визначається здатністю планувати і здійснювати зміни у відповідності з перспективними ідеями і цілями

Co-application of Difenoconazole with Thymol Results in Suppression of a Parastagonospora Nodorum Mutant Strain Resistant to this Triazole

Results of in vitro study of thymol, a natural chemosensitizer, as a potential agent for overcoming of difenoconazole resistance of Parastagonospora nodorum causing glume and leaf blotch of wheat are first reported. The level of difenoconazole resistance of a natural mutant PNm1 strain with low sensitivity to the Dividend fungicide (a.i. difenoconazole) was determined by the cultivation of this isolate on potato dextrose agar in the presence of the fungicide at sub-lethal and lethal (in relation to the initial fungicide-sensitive strain) concentrations. A principal possibility of the thymol use to overcome resistance of P. nodorum to DMI (demethylation inhibitors) fungicides is shown. Co-application of this compound with Dividend SC, 3 % resulted in a significant reduction of resistance of the mutant strain and enhancement of its sensitivity to difenoconazole up to the level corresponding to the initial non-resistant isolate

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

Probe microscopy in the study of the surface of aluminum alloys

The work was supported by the Grant of the RNF 14-19-01033-P (study of topography and elemental composition of the surface) and the State Task (№ State registration AAAA-A17-117021310379-5 - study of electrical properties of the surface). The authors are grateful to N.A. Belov (MISiS) for providing samples

Equilibrium susceptibilities of superparamagnets: longitudinal & transverse, quantum & classical

The equilibrium susceptibility of uniaxial paramagnets is studied in a unified framework which permits to connect traditional results of the theory of quantum paramagnets, \Sm=1/2, 1, 3/2, ..., with molecular magnetic clusters, \Sm\sim5, 10, 20, all the way up, \Sm=30, 50, 100,... to the theory of classical superparamagnets. This is done using standard tools of quantum statistical mechanics and linear response theory (the Kubo correlator formalism). Several features of the temperature dependence of the susceptibility curves (crossovers, peaks, deviations from Curie law) are studied and their scalings with \Sm identified and characterized. Both the longitudinal and transverse susceptibilities are discussed, as well as the response of the ensemble with anisotropy axes oriented at random. For the latter case a simple approximate formula is derived too, and its range of validity assessed, so it could be used in modelization of experiments.Comment: 32 pages, 5 figures. Submitted to J.Phys.Condens.Matte

Blood Lipoproteins under the Action of Exogenous Sex Steroids in the Postresuscitation Period

Objective: to study the effect of reproductive hormones on the blood lipoprotein spectrum in the postresuscitation period after cardiac arrest. Materials and methods. Experiments were carried out on 66 mature albino rats of either sex weighing 200—250 g. Ten-minute cardiac arrest was induced by intrathoracic ligation of the vascular bundle. At 30 min after resuscitation, 49 animals were intramuscularly injected placebo and 17 animals were administered gyn-odian depot (Schering, Germany). The investigators measured the plasma concentrations of progesterone, 17-OH progesterone, androstenedione, dehydroepiandrosterone sulfate, testosterone, estradiol, and estriol, as well as the levels of triglycerides, total, and high-density lipoprotein (HDL), low-density lipoprotein (LDL), and very low-density lipoprotein (VLDL) cholesterols. Blood was sampled on days 2 and 16 in the absence of therapy and on day 16 of sex steroid therapy. Results. By day 2 postresuscitation, the progesterone/estradiol ratio increased by approximately 1.8 times in males and females. Despite the fact that there were no changes in the concentrations of triglycerides, VLDL and HDL cholesterols in both males and females at that time, but the level of LDL cholesterol increased. Gender-related differences in the LDL spectrum by day 2 postresuscitation remained only in the levels of LDL cholesterol. Despite the normalization of progesterone levels, the concentrations of triglycerides and VLDL cholesterol decreased by day 16 of the postresuscitative period in the absence of therapy. There were no gender-related differences in the lipoprotein spectrum at this stage. The exogenous estradiol in combination with dehydroepiandrosterone caused a significant increase in the concentration of HLD cholesterol and a reduction in that of VLDL cholesterol in males and females both. Conclusion. Under gynodian action, the lipid spectrum was indicative of the exogenous estra-diol and dehydroepiandrosterone sulfate activation of the receptor transport of polyunsaturated fatty acids to the cells and that of reverse cholesterol outflow from the cell membranes in the resuscitated animals. Key words: cardiac arrest, reproductive steroids, blood lipoproteins, gynodian, postresuscitation period

Effect of Pr3+/Pr4+ ratio on the oxygen ion transport and thermomechanical properties of the pyrochlore and fluorite phases in the ZrO2-Pr2O3 system

This paper examines the effect of the Pr3+/Pr4+ ratio on the mechanism of ionic and electronic transport in the (Pr2?xZrx)Zr2O7+x/2 (x = 0.15), Pr2Zr2O7, and Pr2(Zr2?xPrx)O7?x/2 (x = 0.1) pyrochlore phases and Pr3ZrOx with the fluorite structure and on the behavior of their thermal expansion coefficient (TEC). The solid solutions were prepared through coprecipitation followed by firing of the green compacts in air at a high temperature of 1550 ?C for 4 h. The Pr3+/Pr4+ ratio was shown to decrease in going from the (Pr2?xZrx)Zr2O7+x/2 (x = 0.15), Pr2Zr2O7, and Pr2(Zr2?xPrx)O7?x/2 (x = 0.1) pyrochlores to the Pr3ZrOx fluorite, leading to changes in the conductivity type from mixed (ionic?electronic) to electronic and in the color of the materials from beige to black and to an anomalous deviation of the TEC from linearity in fluorite Pr3ZrOx, i.e. at the highest Pr4+ content. According to impedance spectroscopy results, (Pr2?xZrx)Zr2O7+x/2 with x = 0.15 has purely oxide-ion conductivity (3 ? 10?3 S/cm at 1000 ?C) in a wide range of oxygen partial pressures: from 10?10 to 102 Pa. With increasing Pr content, p-type electronic conductivity becomes significant, reaching a maximum in fluorite Pr3ZrOx: ?0.5 S/cm at 1000 ?C. According to XPS data, all pyrochlore samples (Pr2?xZrx)Zr2O7+x/2 (x = 0.15), Pr2Zr2O7 and Pr2(Zr2?xPrx)O7?x/2 (x = 0.1) contain only Pr3+ at room temperature, whereas Pr3ZrOx contains both Pr3+ and Pr4+. The considerable deviation of the TEC of Pr3ZrOx from linearity above 500 ?C is due to partial reduction of Pr4+. The reduction process Pr4+ + e? ? Pr3+ followed by oxygen release in the range 500?1100 ?C has been identified in Pr3ZrOx by thermal analysis and mass spectrometry in a He atmosphere.371C-9F16-EBDE | Eduarda GomesN/

The Determinants of the 13-Year Risk of Incident Atrial Fibrillation in a Russian Population Cohort of Middle and Elderly Age

Atrial fibrillation (AF) is the most common arrhythmia and a predictor of the complications of atherosclerotic cardiovascular diseases (ASCVDs), particularly thromboembolic events and the progression of heart failure. We analyzed the determinants of the 13-year risk of incident AF in a Russian population cohort of middle and elderly age. A random population sample (n = 9360, age 45–69 years) was examined at baseline in 2003–2005 and reexamined in 2006–2008 and 2015–2017 in Novosibirsk (the HAPIEE study). Incident AF was being registered during the average follow-up of 13 years. The final analysis included 3871 participants free from baseline AF and cardiovascular disease (CVD) who participated in all three data collections. In a multivariable-adjusted Cox regression model, the 13-year risk of AF was positively associated with the male sex (hazard ratio (HR) = 2.20; 95% confidence interval (CI) 1.26–3.87); age (HR = 1.10 per year; 95% CI 1.07–1.14); body mass index (BMI), (HR = 1.11 per unit; 95% CI 1.07–1.15); systolic blood pressure (SBP), (HR = 1.02 per 1 mmHg; 95% CI 1.01–1.02), and it was negatively associated with total cholesterol (TC), (HR = 0.79 per 1 mmol/L; 95% CI 0.66–0.94). In women, the risk of AF was more strongly associated with hypertension (HT) and was also negatively related to total cholesterol (TC) level (HR = 0.74 per 1 mmol/L; 95% CI 0.56–0.96). No independent association was found with mean alcohol intake per drinking occasion. These results in a Russian cohort have an implication for the prediction of AF and ASCVD complications in the general population