389 research outputs found

    Моніторингові дослідження в університеті: досвід і результати

    Get PDF
    The article presents the research of the monitoring that has recently been intensified, as well as radical changes in the organization of Ukrainian universities. Thus, we can observe that researches are gradually changing the goals, and as a result their functional features. Initially, the conduction of monitoring research is related to the definition of the degree of subjective perception of the quality of lecturers’ activity, as well as administrative and organizational changes, but afterwards it performs the functions of control and evaluation. Today the monitoring research is becoming an integral part of inner audit of the quality of educational activity. The problems, which arise, concern both, the quality of monitoring tools and the purpose of monitoring; its results are also connected with the results of efficient activity of subjects in educational process, including the university. It should be noted that, except for the purely internal instrumental functions, in the future, monitoring will become the means of the diagnosis of transparent activity in higher educational institutions. One of such steps is the demonstration of the content and the results of monitoring research, which was conducted at Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv during 2008–2016, especially the results since 2010, as they enable us to compare. The authors give emphasis to the monitoring stages, analyzing the objectives, content and results. The data analysis of the research is the basis for the new approaches formation, concerning the university as a subject. This study stimulates the development of similar practices at other universities. First of all, it will encourage the transparency in their activities; secondly, the exchange of experience in the formation of internal system of quality, and finally, this work is essential in the creation of common space for international relations and significant inter-university research.Дослідження моніторингового характеру, що активізувалися в українських університетах одночасно з радикальними змінами в їх організації, поступово змінюють свої цілі, отже, й функціональні риси. Спочатку їх проведення було пов’язане із визначенням ступеня суб’єктивного сприйняття якості діяльності викладачів та адміністративно-організаційних змін, потім вони набули контрольно-оцінних функцій. Зараз моніторингові дослідження стають елементом внутрішнього аудиту якості освітньої діяльності. Проблеми, що при цьому виникають, пов’язані і з якістю засобів моніторингу, і з його метою, і зі зв’язком його результатів та ефективності діяльності суб’єктів освітнього процесу, в тому числі й університету. Слід зазначити, що, крім винятково внутрішніх інструментальних функцій, моніторинг у перспективі стане ще й засобом діагностики транспарентності діяльності вищих навчальних закладів. Одним із таких кроків є оприлюднення змісту й результатів порівнюваних моніторингових досліджень, проведених у Львівському національному університеті ветеринарної медицини та біотехнологій імені С.З. Ґжицького протягом 2008–2016 рр., зокрема результатів починаючи з 2010 р. (пілотний не включений). Авторами виокремлені етапи моніторингу (пілотний і три основні), проаналізовані цілі, зміст, отримані результати. Аналіз відомостей, здобутих у результаті проведених досліджень, є основою формування нових підходів щодо суб’єктивації університету в цілому, зокрема персоналізації управління, індивідуалізації діяльності його суб’єктів. Це дослідження стимулює розвиток аналогічної практики в інших університетах, що сприятиме, по-перше, відкритості у їх діяльності, по-друге, обміну досвідом у побудові внутрішніх систем якості, по-третє, ця робота має важливе значення для створення загального простору для міжнародних зв’язків і значущих міжуніверситетських досліджень

    A unified treatment of cubic invariants at fixed and arbitrary energy

    Full text link
    Cubic invariants for two-dimensional Hamiltonian systems are investigated using the Jacobi geometrization procedure. This approach allows for a unified treatment of invariants at both fixed and arbitrary energy. In the geometric picture the invariant generally corresponds to a third rank Killing tensor, whose existence at a fixed energy value forces the metric to satisfy a nonlinear integrability condition expressed in terms of a Kahler potential. Further conditions, leading to a system of equations which is overdetermined except for singular cases, are added when the energy is arbitrary. As solutions to these equations we obtain several new superintegrable cases in addition to the previously known cases. We also discover a superintegrable case where the cubic invariant is of a new type which can be represented by an energy dependent linear invariant. A complete list of all known systems which admit a cubic invariant at arbitrary energy is given.Comment: 16 pages, LaTeX2e, slightly revised version. To appear in J. Math. Phys. vol 41, pp 370-384 (2000

    A relativistic quark model for the Omega- electromagnetic form factors

    Full text link
    We compute the Omega- electromagnetic form factors and the decuplet baryon magnetic moments using a quark model application of the Covariant Spectator Theory. Our predictions for the Omega- electromagnetic form factors can be tested in the future by lattice QCD simulations at the physical strange quark mass.Comment: 13 pages, 5 figure

    Results on the disconnected contributions for hadron structure

    Get PDF
    7 pages, 15 figures. Proceedings of the Lattice 2014 conference. v2 fixes captions of figures 1 and 2We present results on the disconnected contributions to three point functions entering in studies of hadron structure. We use NF=2+1+1N_F = 2+1+1 twisted mass fermions and give a detailed description on the results of the nucleon {\sigma}-terms, isoscalar axial charge and first moments of bare parton distributions for a range of pions masses. In addition we give the {\sigma}-terms and the computations are performed using QUDA code implemented on GPUs

    Nucleon generalized form factors with twisted mass fermions

    Get PDF
    Talk presented at the 31st International Symposium on Lattice Field Theory - LATTICE 2013, July 29 - August 3, 2013, Mainz, Germany 7 pages and 7 figuresWe present results on the nucleon form factors, momentum fraction and helicity moment for Nf=2N_f=2 and Nf=2+1+1N_f=2+1+1 twisted mass fermions for a number of lattice volumes and lattice spacings. First results for a new Nf=2N_f=2 ensemble at the physical pion mass are also included. The implications of these results on the spin content of the nucleon are discussed taking into account the disconnected contributions at one pion mass

    The Maupertuis principle and canonical transformations of the extended phase space

    Full text link
    We discuss some special classes of canonical transformations of the extended phase space, which relate integrable systems with a common Lagrangian submanifold. Various parametric forms of trajectories are associated with different integrals of motion, Lax equations, separated variables and action-angles variables. In this review we will discuss namely these induced transformations instead of the various parametric form of the geometric objects

    The quark contents of the nucleon and their implication for dark matter search

    Get PDF
    7 pages, 6 figures, talk given at the 31st International Symposium on Lattice Field Theory (Lattice 2013), July 29-August 3 2013, Mainz, GermanyWe present results concerning the light and strange quark contents of the nucleon using Nf=2+1+1N_f=2+1+1 flavours of maximally twisted mass fermions. The corresponding σ\sigma-terms are casting light on the origin of the nucleon mass and their values are important to interpret experimental data from direct dark matter searches. We discuss our strategy to estimate systematic uncertainties arising in our computations. Our preliminary results for the σ\sigma-terms read \sigma_{\pi N} = 37(2.6)(24.7) \mev and \sigma_s=28(8)(10) \mev. We present our recent final analysis of the yNy_N parameter and found yN=0.135(46)y_N=0.135(46) including systematics\cite{Alexandrou:2013nda}

    Nucleon form factors and moments of generalized parton distributions using Nf=2+1+1N_f=2+1+1 twisted mass fermions

    Get PDF
    Version accepted for publication in Phys. Rev. D. 23 pages, 27 figuresWe present results on the axial and the electromagnetic form factors of the nucleon, as well as, on the first moments of the nucleon generalized parton distributions using maximally twisted mass fermions. We analyze two N_f=2+1+1 ensembles having pion masses of 210 MeV and 354 MeV at two values of the lattice spacing. The lattice scale is determined using the nucleon mass computed on a total of 18 N_f=2+1+1 ensembles generated at three values of the lattice spacing, aa. The renormalization constants are evaluated non-perturbatively with a perturbative subtraction of O(a2){\cal O}(a^2)-terms. The moments of the generalized parton distributions are given in the MSˉ\bar{\rm MS} scheme at a scale of μ=2 \mu=2 GeV. We compare with recent results obtained using different discretization schemes. The implications on the spin content of the nucleon are also discussed

    Disconnected quark loop contributions to nucleon observables in lattice QCD

    Get PDF
    One additional figure, typos corrected, version to appear in Phys. Rev. D. 14 pages and 14 figures. arXiv admin note: text overlap with arXiv:1309.2256We perform a high statistics calculation of disconnected fermion loops on Graphics Processing Units for a range of nucleon matrix elements extracted using lattice QCD. The isoscalar electromagnetic and axial vector form factors, the sigma-terms and the momentum fraction and helicity are among the quantities we evaluate. We compare the disconnected contributions to the connected ones and give the physical implications on nucleon observables that probe its structure

    Sigma terms and strangeness content of the nucleon with Nf=2+1+1Nf=2+1+1 twisted mass fermions

    Get PDF
    7 pages, 6 figures. Talk given at the XXX International Symposium on Lattice Field Theory - Lattice 2012, June 24-29, 2012 Cairns, AustraliaWe investigate excited state contaminations in a direct computation of the nucleon σ\sigma-terms. This is an important source of systematic effects that needs to be controlled besides the light quark mass dependence and lattice artefacts. We use maximally twisted mass fermions with dynamical light (uu,dd), strange and charm degrees of freedom. Employing an efficient stochastic evaluation of the disconnected contribution available for twisted mass fermions, we show that the effect of excited states is large in particular for the strange σ\sigma-terms, where it can be as big as O(40O(\gtrsim 40%). This leads to the unfortunate conclusion that even with a source-sink separation of \sim 1.5 \fm and a good statistical accuracy it is not clear, whether excited state effects are under control for this quantity
    corecore