On the T-Odd Quark Fragmentation Function and on Transversal Handedness

The first probe of the correlation of the T-odd one-particle fragmentation function responsible for the left--right asymmetry of fragmentation of a transversely polarized quark is done by using the 1991-95 DELPHI data for $Z\to 2$-jet decay. Integrated over the fraction of longitudinal and transversal momenta, this correlation is of 1.5% order, which means order of 13% for the analyzing power. A rather large ($\approx 10$) handedness transversal to the production plane was observed in the diffractive production of ($\pi^-\pi^+\pi^-$) triples from nuclei by the $40 GeV/c \pi^-$--beam. It was shown that the phenomenon has a clear dynamic origin and resembles the single spin asymmetry behavior. All this makes us hope to use this effects in polarized DIS experiments for transversity measurement.Comment: 10 pp, 5 epsfig, Latex 2e, szjp.cls, epsfig.sty, wrapfig.sty included. Talk in "Spin and Symmetry - Praha98". To be published in Czechoslovak Journal of Physics, Supp

Sol-gel Synthesis, Photo- and Electrocatalytic Properties of Mesoporous TiO2 Modified with Transition Metal Ions

Abstract Mesoporous nanosized titania films modified with Co2+, Ni2+, Mn3+, and Cu2+ ions have been produced by templated sol-gel method and characterized by optical spectroscopy, X-ray diffraction (XRD), and Brunauer, Emmett, and Teller (BET) surface area measurement. Band gap energy and the position of flat band potentials were estimated by photoelectrochemical measurements. The films doped with transition metals possessed higher photocurrent quantum yield, as well as photo- and electrochemical activity compared to undoped samples. Mn+/TiO2 (M–Co, Ni, Mn, Cu) electrodes with low dopant content demonstrate high efficiency in electrocatalytic reduction of dissolved oxygen. Polarization curves of TiO2, TiO2/Ni2+, TiO2/Co2+/3+, and TiO2/Mn3+ electrodes contain only one current wave (oxygen reduction current). It means that reaction proceeds without the formation of an intermediate product H2O2

Phase and Intensity Distributions of Individual Pulses of PSR B0950+08

The distribution of the intensities of individual pulses of PSR B0950+08 as a function of the longitudes at which they appear is analyzed. The flux density of the pulsar at 111 MHz varies strongly from day to day (by up to a factor of 13) due to the passage of the radiation through the interstellar plasma (interstellar scintillation). The intensities of individual pulses can exceed the amplitude of the mean pulse profile, obtained by accumulating 770 pulses, by more than an order of magnitude. The intensity distribution along the mean profile is very different for weak and strong pulses. The differential distribution function for the intensities is a power law with index n = -1.1 +- 0.06 up to peak flux densities for individual pulses of the order of 160 Jy

Analysis of spatial humus distribution in virgin and arable Chernozems in the eroding landscapes

A statistical assessment of data on the content and spatial distribution of humus in virgin and arable Chernozems on slopes in the south of the forest-steppe zone of the Central Russian Upland was performed. The greatest number of statistically significant differences between arable and virgin Chernozems was found for the upper soil layer (0–20 cm

Formal bases of optimization procedures of system-object imitation models of processes and systems

The paper discusses some optimization methods for system-object simulation models of processes and systems. The authors proposed some optimization principles in the article in order to increase the efficiency of the system-object analysis of organizational, business and industrial processes by improving the theoretical and instrumental means of optimizing the system-object simulation model

Asymmetry Function of Interstellar Scintillations of Pulsars

A new method for separating intensity variations of a source's radio emission having various physical natures is proposed. The method is based on a joint analysis of the structure function of the intensity variations and the asymmetry function, which is a generalization of the asymmetry coefficient and characterizes the asymmetry of the distribution function of the intensity fluctuations on various scales for the inhomogeneities in the diffractive scintillation pattern. Relationships for the asymmetry function in the cases of a logarithmic normal distribution of the intensity fluctuations and a normal distribution of the field fluctuations are derived. Theoretical relationships and observational data on interstellar scintillations of pulsars (refractive, diffractive, and weak scintillations) are compared. Pulsar scintillations match the behavior expected for a normal distribution of the field fluctuations (diffractive scintillation) or logarithmic normal distribution of the intensity fluctuations (refractive and weak scintillation). Analysis of the asymmetry function is a good test for distinguishing scintillations against the background of variations that have different origins

WORK OF A HIGHER EDUCATIONAL INSTITUTION MULTIDISCIPLINARY DEPARTMENT ON THE FORMATION OF PROFESSIONAL COMPETENCES OF FUTURE ELEMENTARY SCHOOL TEACHERS

The aim of the study is to test new approaches to the management of professional and personal development of students of pedagogical university. Methodology and research methods. The theoretical analysis of the following information sources was carried out: psychological, pedagogical and methodological literature on the researched topic; teaching-program documentation and teaching materials (work programs of studying disciplines, textbooks, manuals, collections of tasks, guidelines, etc.); normative documents (Federal State Educational Standards (FSES), General Educational Programs (GEP), curricula, instructional acts, etc.). The methods of modeling and expert evaluation were used. Results and scientific novelty. The features of integrative activities of the multidisciplinary department of pedagogical university for formation of professional competences of future elementary school teachers are revealed. The diagnostics of the competences mastered by pupils at the level of a bachelor degree was carried out during deployment period, carrying out mini-researches and performing of the combined analytic-constructive and diagnostic tasks at lessons. Practical significance. The diagnostic approach to formation of professional competences of future teachers of primary school (undergraduate level) under conditions of multidisciplinary department work may be of interest to teachers of other pedagogical universities and colleges.Цель представленной в статье работы - поиск и апробация новых подходов к управлению профессионально-личностным развитием студентов педагогического университета. Методология и методики исследования. Был проведен теоретический анализ психологической, педагогической и методической литературы по исследуемой проблеме; анализ учебно-программной документации и учебных материалов (рабочих программ дисциплин, учебников, учебных пособий, сборников задач и заданий, методических рекомендаций и др.), нормативных документов (ФГОС, основных образовательных программ (ООП), учебных планов, инструктивных актов и т. п.). В ходе исследования использовались методы моделирования и метод экспертной оценки. Результаты и научная новизна. Раскрыты особенности интегративной деятельности многопредметной выпускающей кафедры педагогического университета по формированию профессиональных компетенций будущих учителей начальных классов. На основе анализа продуктов деятельности студентов в период практики, при проведении мини-исследований и выполнении комбинированных аналитико-конструктивных и диагностических заданий на занятиях осуществлена диагностика освоенных учащимися компетенций на уровне бакалавриата. Практическая значимость. Представленный в статье диагностический подход к формированию профессиональных компетенций будущих учителей начальных классов (уровень бакалавриата) в условиях деятельности многопредметной выпускающей кафедры может быть экстраполирован на деятельность преподавателей других педагогических вузов и колледжей