Polarized strangeness in the nucleon

A large violation of the Okubo-Zweig-Iizuka rule was discovered in the annihilation of stopped antiprotons. The explanation of these experimental data is discussed in the framework of the model assumed that the nucleon strange sea quarks are polarized.Comment: 10 pages, Latex using espcrc1.sty, Invited talk at Low Energy Antiproton Physics Conference (LEAP 2000), Venice, Italy, August, 200

Comparison of longitudinal polarization of Λ\Lambda and Λˉ\bar\Lambda in deep-inelastic scattering at COMPASS

The longitudinal polarization of Lambda and anti-Lambda hyperons produced in deep-inelastic scattering of 160 GeV/c polarized muons is studied in the COMPASS experiment. Preliminary results on x- and y- dependence of the longitudinal polarization of Lambda and anti-Lambda from data collected during the 2003 run are presented.Comment: 8 pages, 7 figures, submitted to the Proceedings of XI Workshop on High Energy Spin Physics "SPIN-05", Dubna, September 200

Longitudinal polarization of Λ\Lambda and Λˉ\bar\Lambda in deep-inelastic scattering at COMPASS

Production of $\Lambda$ and $\bar\Lambda$ hyperons in deep-inelastic scattering of 160 GeV/c polarized muons is under study in the COMPASS (CERN NA58) experiment. Preliminary results on longitudinal polarization of the hyperons from the data collected during the 2002 run are presented.Comment: 6 pages, 4 figures, submitted to the Proceedings of XVII International Baldin Seminar "Relativistic Nuclear Physics and Quantum Chromodynamics", Dubna, 200

Theory of pattern-formation of metallic microparticles in poorly conducting liquid

We develop continuum theory of self-assembly and pattern formation in metallic microparticles immersed in a poorly conducting liquid in DC electric field. The theory is formulated in terms of two conservation laws for the densities of immobile particles (precipitate) and bouncing particles (gas) coupled to the Navier-Stokes equation for the liquid. This theory successfully reproduces correct topology of the phase diagram and primary patterns observed in the experiment [Sapozhnikov et al, Phys. Rev. Lett. v. 90, 114301 (2003)]: static crystals and honeycombs and dynamic pulsating rings and rotating multi-petal vortices.Comment: 4 pages, 5 figures, submitted to Phys. Rev. Let

Far-from-equilibrium Ostwald ripening in electrostatically driven granular powders

We report the first experimental study of cluster size distributions in electrostatically driven granular submonolayers. The cluster size distribution in this far-from-equilibrium process exhibits dynamic scaling behavior characteristic of the (nearly equilibrium) Ostwald ripening, controlled by the attachment and detachment of the "gas" particles. The scaled size distribution, however, is different from the classical Wagner distribution obtained in the limit of a vanishingly small area fraction of the clusters. A much better agreement is found with the theory of Conti et al. [Phys. Rev. E 65, 046117 (2002)] which accounts for the cluster merger.Comment: 5 pages, to appear in PR

Hadronic Probes of the Polarized Intrinsic Strangeness of the Nucleon

We have previously interpreted the various large apparent violations of the naive Okubo-Zweig-Iizuka (OZI) rule found in many channels in $\bar{p}p$ annihilation at LEAR as evidence for an intrinsic polarized $\bar{s}s$ component of the nucleon wave function. The model is further supported by new data from LEAR and elsewhere. Here we discuss in more detail the possible form of the $\bar{s}s$ component of the nucleon wave function, interpret the new data and clarify the relative roles of strangeness shake-out and rearrangement, discuss whether alternative interpretations are still allowed by the new data, and propose more tests of the model.We have previously interpreted the various large apparent violations of the naive Okubo-Zweig-Iizuka (OZI) rule found in many channels in $\bar{p}p$ annihilation at LEAR as evidence for an intrinsic polarized $\bar{s}s$ component of the nucleon wave function. The model is further supported by new data from LEAR and elsewhere. Here we discuss in more detail the possible form of the $\bar{s}s$ component of the nucleon wave function, interpret the new data and clarify the relative roles of strangeness shake-out and rearrangement, discuss whether alternative interpretations are still allowed by the new data, and propose more tests of the model.We have previously interpreted the various large apparent violations of the naive Okubo-Zweig-Iizuka (OZI) rule found in many channels in $\bar{p}p$ annihilation at LEAR as evidence for an intrinsic polarized $\bar{s}s$ component of the nucleon wave function. The model is further supported by new data from LEAR and elsewhere. Here we discuss in more detail the possible form of the $\bar{s}s$ component of the nucleon wave function, interpret the new data and clarify the relative roles of strangeness shake-out and rearrangement, discuss whether alternative interpretations are still allowed by the new data, and propose more tests of the model.We have previously interpreted the various large apparent violations of the naive Okubo-Zweig-Iizuka (OZI) rule found in many channels in $\bar{p}p$ annihilation at LEAR as evidence for an intrinsic polarized $\bar{s}s$ component of the nucleon wave function. The model is further supported by new data from LEAR and elsewhere. Here we discuss in more detail the possible form of the $\bar{s}s$ component of the nucleon wave function, interpret the new data and clarify the relative roles of strangeness shake-out and rearrangement, discuss whether alternative interpretations are still allowed by the new data, and propose more tests of the model.We have previously interpreted the various large apparent violations of the naı̈ve Okubo–Zweig–Iizuka (OZI) rule found in many channels in p ̄ p annihilation at LEAR as evidence for an intrinsic polarized s ̄ s component of the nucleon wave function. The model is further supported by new data from LEAR and elsewhere. Here we discuss in more detail the possible form of the s ̄ s component of the nucleon wave function, interpret the new data and clarify the relative roles of strangeness shake-out and rearrangement, discuss whether alternative interpretations are still allowed by the new data, and propose more tests of the model

Investigando la educación en educación con el caso de M.M. Sistema educativo de Speransky

M.M. Speransky is a famous Russian public and political figure. However, his activities were not limited to political issues. His pedagogical activity is studied poorly. The basic principles of the younger generation upbringing were laid during the seminar period, which coincided in time with the pedagogical activity by M. Speransky. The success of Speransky’s pedagogical system is evidenced by the fact that he was invited as an educator to the royal family. The basic principles of Speransky's pedagogy were the following ones: the authority of a teacher, but the lack of authoritarianism, the interaction with a student in the search for the right educational solutions, the attachment to the students and responsibility for them.M.M. Speransky es una famosa figura pública y política rusa. Sin embargo, sus actividades no se limitaron a cuestiones políticas. Su actividad pedagógica es poco estudiada. Los principios básicos de la educación de la generación más joven se establecieron durante el período del seminario, que coincidió en el tiempo con la actividad pedagógica de M. Speransky. El éxito del sistema pedagógico de Speransky se evidencia por el hecho de que fue invitado como educador a la familia real. Los principios básicos de la pedagogía de Speransky fueron los siguientes: la autoridad de un maestro, pero la falta de autoritarismo, la interacción con un estudiante en la búsqueda de las soluciones educativas correctas, el apego a los estudiantes y la responsabilidad por ellos

Categoría de “educación” en M.M. Sistema educativo Speransky

M.M. Speransky is a famous Russian public and political figure. However, his activities were not limited to political issues. His pedagogical activity is studied poorly. The basic principles of the younger generation upbringing were laid during the seminar period, which coincided in time with the pedagogical activity by M. Speransky. The success of Speransky’s pedagogical system is evidenced by the fact that he was invited as an educator to the royal family. The basic principles of Speransky’s pedagogy were the following ones: the authority of a teacher, but the lack of authoritarianism, the interaction with a student in the search for the right educational solutions, the attachment to the students and responsibility for them.M.M. Speransky es una famosa figura pública y política rusa. Sin embargo, sus actividades no se limitaron a cuestiones políticas. Su actividad pedagógica es poco estudiada. Los principios básicos de la educación de la generación más joven se establecieron durante el período del seminario, que coincidió en el tiempo con la actividad pedagógica de M. Speransky. El éxito del sistema pedagógico de Speransky se evidencia por el hecho de que fue invitado como educador a la familia real. Los principios básicos de la pedagogía de Speransky fueron los siguientes: la autoridad de un maestro, pero la falta de autoritarismo, la interacción con un estudiante en la búsqueda de las soluciones educativas correctas, el apego a los estudiantes y la responsabilidad por ellos