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Archive of LIT Seminars (2007)
 
December 20, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:
   T.L. BOYADJIEV (LIT, JINR), H.T. Melemov (University of Plovdiv, Bulgaria):  "Numerical solution of systems of ODE’s on embedded intervals"

A method of solution of boundary-value problems for nonlinear systems of ordinary differential equations on embedded intervals of a change of independent variable is discussed. The algorithm uses the Continuous analog of Newton method and collocation with hermitian cubic splines. Such problems originate, in particular, at investigation of the stability and bifurcations of bound states in the multilayer long Josephson contacts, which separate layers have unequal lengths. Numerical experiments show that the difference in lengths exert essential influence on possible states of a magnetic flux in the layers.

December 6, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:
    Christoph-Erdmann Pfeiler  (Institute for Scientific Computing of Forschungszentrum Karlsruhe)

  1. Activities, opportunities and experience in dissemination and training for grid computing
A role of gLite related training, funded by EGEE, will be assessed within the dissemination process

  2. Setup of a user environment for EGEE training
The conditions, pitfalls and layout of this year's GridKa International Summer School will be acquainted.

November 29, 2007, at 14.30  (LIT conference hall) the seminar LIT will be held:
    Ж. Мусульманбеков:  "Создание персональной базы данных библиографической информации"

  1. Текущая информация по доступным электронным ресурсам.
  2. Описание пакета EndNote*, позволяющего:

  1. Создавать персональную библиографическую базу
  2. Осуществлять поиск и загружать ссылки из доступных библиографических баз в Интернете
  3. Подсоединять к библиографическим ссылкам полнотекстовые статьи, рисунки и таблицы
  4. Встраивать в документ Word библиографические ссылки
* для заинтересованных пользователей: имеется ограниченное количество лицензий
November 15, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:
   E.P. Zhidkov, R.V. POLYAKOVA, I.G. Voloshina, N.S. Rossiyskaya, E.E. Perepelkin, T.V. Shavrina, I.P. YUDIN:  "Computer Simulation of Spectrometric Magnet for Experimental Installation MARUSYA "
November 1, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:

  V.M. DUBOVIK,  E.N. Dubovik:  "Generalized equations of quantum mechanics"

October 25, 2007, at 11.00 a.m.00  (LIT, r. 310) the seminar LIT will be held:

  A.N. Vasilyev  ( St.-Pb. SPU):  "Neural Network Modeling in Mathematical Physics"
(Materials of Doctoral Thesis)
Abstract:
Methodology of constructing of robust mathematical models of complicated systems with distributed parameters according to heterogeneous information is offered in the report. A new paradigm of modeling such systems on the basis of neural network computing technology is formulated. Neural network methods and algorithms to the solution of mathematical physics problems in the case of classical and non-classical statement are developed. These methods and algorithms allow computing parallelization and give us the opportunity to combine selection of optimal structure of modeling system with parameter tuning of neural network function basis depending on modeling problem to be solved. Some applications of practical importance are considered: temperature field model of "blood vessels - tissue environment", nano-object model (quantum dot), model of two phase system with free boundary and model of alternating pressure reference calibration rig with working chamber shape optimization. Analysis of building neural network regularizations of solutions of non-classical mathematical physics problems was performed by the example of characteristic boundary value problem for the ultrahyperbolic PDE under problem solvability criterion and by the example of ill-posed problem of field continuation according to experiment point data.

October 18, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:

  B. Saha, V. Rikhvitsky:  "Nonlinear spinor fields in anisotropic cosmological model filled with viscous fluid: exact solutions and qualitative analysis"

October 11, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:

  S.A. Sukhov  (IHEP, Protvino):  "Development of a monitoring system of operative data based on WEB-technologies"
(materials of a PhD thesis)

October 11, 2007, at 11.00 a.m.  (LIT, r. 310) the seminar LIT will be held:

  V.O. Nesterenko:  "Review of nanosystems:  physics, applications, perspectives"

September 25, 2007, at 12.00 a.m.  (LIT, r. 310) the seminar LIT will be held:
  I.L. Chernyavsky  (MEPhI):  "Mathematical simulation of wave processes and autoregulation of blood motion in vessels"
  (Materials of PhD thesis)
September 11, 2007, at 15.00   (LIT, r. 310) the seminar LIT will be held:
  S.P. Radev, Т. Boyadjiev, F. Onofri:  "Mathematical simulation of extraction of glass-fiber out of alloy"
August 17, 2007, at 15.00  (LIT, r. 310) the seminar LIT will be held:
  Dubravko Klabucar  (Physics Department, Faculty of Science, University of Zagreb, Croatia):  " mesons in the Dyson-Schwinger approach with a generalization of the Witten-Veneziano relation"

Abstract:
The phenomenologically successful Dyson-Scwinger treatments of the mesons have so far relied on the Witten-Veneziano relation. It was used to extract the mass contribution due to the gluon anomaly. However, this relation was derived in the approximation of the large number of quark colors Nc. Recently, Shore proposed a framework which amounts to a generalization, valid to all orders in the 1/Nc expansion, of the Witten-Veneziano relation. The previous Dyson-Schwinger treatments of the complex are considered in the same three dynamical models, but now using Shore's generalization instead of the original Witten-Veneziano relation, and the results are compared.

July 20, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  1.  Amirkhanov I.V., Muzafarov D.Z., Sarker N.R., SARHADOV I., Sharipov Z.A.:  "The solution of boundary-value problems for singular - perturbed differential equations of high order"

  2.  Akishina E.P., Akishina T.P., Denisova O.Yu., IVANOV V.V. :  "On identification of particles (e/) in the CBM experiment using TRD"
July 11, 2007, at 15:00 . (LIT, r. 310) the seminar LIT will be held:
    Vladimir Dimitrov (University of Sofia, Bulgaria) :  "Development of Applications with Service Oriented Architecture for Grid "
July 5, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  1.  Dziekonski:  "Presentation of Wroclaw for Networking and Supercomputing"

  2.  J. Janyszek*:  "Pionier-Polish Optical Internet"

  * Wroclaw Center for Networking and Supercomputing, Wroclaw University of Technology, Wroclaw, Poland
July 6, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
    O. ZEYNALOVA, Sh. Zeynalov (JINR),   F.J. Hambsch, S. Oberstedt (EC-JRC, Belgium):  "Application of digital signal processing to nuclear particle spectroscopy "
June 20, 2007, at 15:00  (LIT conference hall) the seminar LIT - DLNP will be held:  (PDF)
Livio Mapelli (CERN)
“Trigger and Data acquisition for the ATLAS experiment: concept, design and realisation”

  Abstract:
 ATLAS (A Toroidal LHC ApparatuS) is a multi-purpose detector presently under construction for the Large Hadron Collider (LHC) at CERN. The selection of interesting physics channels and the acquisition of their data requires a Trigger and Data Acquisition system (TDAQ) based on innovative architectural solutions and a multi-level selection process and a hierarchical acquisition tree, expected to provide an online selection power of 105 and a total throughput in the range of Terabit/sec. Its implementation consists of a combination of custom electronics and commercial products from the computing and telecommunication industry. The concept and design of the ATLAS TDAQ have been developed to take maximum advantage of the physics nature of very high-energy hadron interactions. The final system will consist of a few thousands processors, the majority commercial PCs, interconnected by a multi-layer Gbit Ethernet network, whose central core consists of two 256-port switches. The selection and data acquisition software has been designed in-house and production releases are regularly produced and extensively used for the operations at the ATLAS experimental site and in ATLAS laboratories and institutions worldwide. The installation and commissioning of the ATLAS TDAQ system is well advanced. The networking and online computing infrastructure is complete. The totality of the Read-Out System is installed since Summer 2006 and routinely used by the sub-detectors. 1/3 of the dataflow network and computing nodes is installed and will be completed by the end of the year. A minimal number, ~160 nodes, of High-Level Trigger processing unit are installed and operational, the bulk of the processing power will be purchased as close as possible to LHC start-up. The totality of the installed system is today operational and routinely used in real-life data taking sessions for the commissioning of the TDAQ system (TDAQ Technical Runs) and the commissioning of the full ATLAS experiment (Commissioning Runs). The former use physics selection algorithms in the HLT farms on simulated data pre-loaded in the Read-Out System, while the latter take cosmic data through the detectors after final integration in the TDAQ system. The ATLAS data taking is today well advanced, showing a performance adequate for the final data taking at the LHC.

June 20, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
    Val.V.Ivanov:  "Statistical Model of Information Traffic"
(Materials of a PhD thesis)
June 15, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
    A.A. POLANSKI,   A.N. Sosnin:  "Monte Carlo Modeling of Secondary Neutron and Proton Fluxes from the Surface of Subcritical Assemblies under Irradiation with High Energy Proton Beams"
June 14, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  1.  I.V. Amirkhanov,  A.Yu. Didyk,  D.Z. Muzafarov,  I.V. Puzynin,  T.P. Puzynina,  N.R. Sarker,  I. Sarhadov,  Z.A. SHARIPOV:  "Investigation of temperature effects in anisotropic materials at an irradiation them by heavy ions of 86Kr  и  209Bi of high energies in thermal pike model"

  2.  I.V. Amirkhanov,  A.Yu. Didyk,  D.Z. MUZAFAROV,  I.V. Puzynin,  T.P. Puzynina,  N.R. Sarker,  I. Sarhadov,  Z.A. Sharipov:  "Application of nonlinear thermal pike model for calculation of temperature effects in two-layer materials at an irradiation by heavy ions of high energies"
28 мая 2007 г., в 15.00  (конференц - зал ЛИТ)  состоится семинар ЛИТ по электронным библиотекам:  ( PDF)

“ ELSEVIER – роль и место в современной научной электронной библиотеке”
Программа семинара:

15.00 – 15.30  О доступе сотрудников ОИЯИ к ресурсам электронных библиотек.
              Текущая информация, новые ресурсы
              Женис Мусульманбеков, он–лайн админинстратор
15.30 – 16.00  Международный рынок научной информации в настоящее время.
              Science Direct – новости электронной библиотеки ELSEVIER
              Олег Уткин, региональный менеджер издательства Elsevier
16.00 –16.30   Science Direct – коллекция книг
              Олег Кротов, менеджер издательства Elsevier
16.30 – 17.00  Scopus как библиометрический инструмент оценки научной деятельности
              Олег Уткин, региональный менеджер издательства Elsevier
May 23, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:

Yu.A. Blinkov (Saratov State University)
  "Involutive methods of computing Groebner Bases." (Materials of Doctor's thesis)

May 24, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:

E.P. Zhidkov, I.V. Amirkhanov, I.N. KIYAN (JINR), R. Taraszkiewicz (INP PAS)
  "Methoods of simulation of operation modes of multipurpose isochronous cyclotron."

May 17, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:

A.V. Tikhonenko (IAT, Obninsk)
  "Modern application software as effective technology of mathematical modeling for solving theoretical and mathematical physics and nuclear energy problems"

G.B. Pilnov (IAT, Obninsk)
  "Radioactive waste transmutation: nuclear data support for calculations of perspective nuclear energy installations."

May 14, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:

Ben Herbst (University of Stellenbosch, South Africa)
  1. "Super Resolution"

Аннотация:
The ideas is to extract additional information about an object using multiple views of the object. The additional information is then represented in an image with higher resolution than the original.

  2. "Tracking of objects through occlusions using Active Appearance Models"

Аннотация:
Tracking of deformable objects against busy backgrounds through occlusions is a challenging problem. I show how the performance of Active Appearance Models is enhanced by using it in combination with Particle Filters.

April 25, 2007, at 11 a.m. (LIT, r. 310) the seminar LIT will be held:

  С.Г. Климанов (МИФИ, Москва):  "Математическое моделирование и численное решение задач профилирования внешнего облучения опухоли на основе физических и биологических целевых критериев" (по материалам кандидатской диссертации)

April 26, 2007, at 15  (LIT, r. 310) the seminar LIT will be held:
  Gh. Adam, S. Adam:  "Rigorous derivation of the mean field Green functions of the two-band Hubbard model of superconductivity"

Abstract:
  The Green function (GF) equation of motion technique for solving the effective two-band Hubbard model of high-Tc superconductivity in cuprates [N.M. Plakida et al., Phys. Rev. B, 51, 16599 (1995); JETP, 97, 331 (2003)] rests on the Hubbard operator (HO) algebra. We show that, if we take into account the invariance to translations and spin reversal, the HO algebra results in invariance properties of several specific correlation functions. The use of these properties allows rigorous derivation and simplification of the expressions of the frequency matrix (FM) and of the generalized mean field approximation (GMFA) Green functions (GFs) of the model.
  For the normal singlet hopping and anomalous exchange pairing correlation functions which enter the FM and GMFA-GFs, an approximation procedure based on the identification and elimination of exponentially small quantities is described. It secures the reduction of the correlation order to GMFA-GF expressions.

April 11, 2007, at 10:00 a.m. (LIT, r. 310) the seminar LIT will be held:

  Lakhina Olga   (Kent State University, Kent, USA):  "Study of meson properties in quark models"
Abstract:
  Meson properties are investigated in the quark model in order to understand the model applicability and generate possible improvements. Certain modifications to the model are suggested which have been inspired by fundamental QCD properties (such as running coupling or spin dependence of strong interactions). These modifications expand the limits of applicability of the constituent quark model and illustrate its weaknesses and strengths. The meson properties studied include meson spectra, decay constants, electromagnetic and electroweak form-factors and radiative transitions. The results are compared to the experimental data, lattice gauge theory calculations and other approaches.

April 10, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  1.  Konstantin Lukyanov:  "The computer simulation of the microscopic approach for nucleus-nucleus interaction at intermediate energies"
  (Materials of PhD thesis)

  2.  N.S.Fialko  (IMPB, Puschino):  "Simulation of transfer of the charge in DNA"
  (Materials of PhD thesis)
April 10, 2007, at 15:00  (LIT, r. 310 ) the seminar LIT will be held:
  1.  A.P. Afanasjev:  "About organization of a computing environment for a numerical solving of the problems of optimal management and other mathematical problems"

  2.  V.V. Voloshinov:  "Principles of organization and general architecture of the LARnet environment"

  3.  O.V. Sukhoroslov:  "LARnet Specialized Services"

  4.  M.A. Posypkin:  "Project BNB-GRID: integration of the resources of several supercomputers by LARnet tools for the solving of global optimization problems"
(Institute of System Analysis RAS)
April 10, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  Konstantin Lukyanov:  "The computer simulation of the microscopic approach for nucleus-nucleus interaction at intermediate energies"
  (Materials of PhD thesis)
April 6, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:
  E.G. Vorontsova  (Tver State University):  "Mathematical simulation of gravitation phenomena on the basis of the dilaton model"
  (Materials of PhD thesis)
April 5, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:

  E.O. Pozdeeva:  "Darboux transformation for one-dimensional nonstationary Dirac equation and one-dimensional relativistic exactly solvable models"
Abstract:
  A one-dimensional Dirac equation is introduced. The relation between one-dimensional and four-dimensional Dirac equations is demonstrated. The method of Darboux transformation operators is generalized to the one-dimensional nonstationary Dirac equation. Properties of Darboux transformation and supersymmetry generalization are obtained. An integral transformation is constructed with the help of the properties of Darboux transformation. The peculiarities of the Darboux transformation method for the one-dimensional nonstationary Dirac equation with a scalar potential is studied. On the basis of obtained transformations, new potentials are constructed for which the Dirac equation can be solved through elementary functions. A method for constructing exactly solvable periodic potentials of stationary Dirac equation is considered. This method is applied to the construction of the new exactly solvable periodic scalar and pseudo-scalar potentials. A method for constructing Green’s function of the regular boundary problem for the one- dimensional stationary Dirac equation with a self-conjugate potential is considered. With the help of this method, a Darboux transformation for the Green’s function is constructed. Formulas for unabridged trace of difference of initial and modified Green’s functions are obtained.

March 2, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  Yu.A. Blinkov  (Saratov State University):  "Involutive Methods of Constructing Groebner Bases"
March 1, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:
  K.V. Lukyanov:  "The computer simulation of the microscopic approach for nucleus-nucleus scattering at intermediate energies"
February 1, 2007, at 16:00 (LIT conference hall) the seminar LIT - BLTP will be held:
  V.P. Gerdt:  "Computer algebra, integrability, involutivity and all that…"
January 18, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:
  V.B. Zlokazov:  "A variation approach to the data filtration problem"
January 17, 2007, at 15:00  (LIT, r. 310) the seminar LIT will be held:
  V.V. Galaktionov:  "Participation in the development of certification tests for VOMS administration, Virtual Organization Management Service"
Report on a scientific mission to CERN (IT-GD-OPS) in frames of the project LCG-SA3/CERN-INTAS (16 October - 22 December 2006)
January 17, 2007, at 11:00 a.m. (LIT, r. 310) the seminar LIT will be held:
  V.V. Ivanov:  Electron/pion identification in the TRD detector of CBM experiment"

Archive of LIT Seminars (2006)
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