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 boundaryvalue 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: 
ChristophErdmann 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:
 Создавать персональную библиографическую базу
 Осуществлять поиск и загружать ссылки из
доступных библиографических баз в Интернете
 Подсоединять к библиографическим ссылкам
полнотекстовые статьи, рисунки и таблицы
 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 nonclassical 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", nanoobject 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
nonclassical 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 illposed 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 WEBtechnologies"
(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 glassfiber 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 DysonSchwinger approach with a generalization of the WittenVeneziano relation"
Abstract:
The phenomenologically successful DysonScwinger treatments of
the mesons have so far relied on the WittenVeneziano 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 WittenVeneziano relation. The previous DysonSchwinger treatments
of the complex are considered in the same three dynamical models,
but now using Shore's generalization instead of the original WittenVeneziano
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 boundaryvalue 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. : "Presentation of Wroclaw for
Networking and Supercomputing"
2. J. Janyszek*: "PionierPolish 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 (ECJRC, 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 multipurpose 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 multilevel selection process and a hierarchical acquisition tree, expected to provide an online selection power of 10^{5} 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 highenergy hadron interactions. The final system will consist of a few thousands processors, the majority commercial PCs, interconnected by a multilayer Gbit Ethernet network, whose central core consists of two 256port switches. The selection and data acquisition software has been designed inhouse 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 ReadOut System is installed since Summer 2006 and routinely used by the subdetectors. 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 HighLevel Trigger processing unit are installed and operational, the bulk of the processing power will be purchased as close as possible to LHC startup.
The totality of the installed system is today operational and routinely used in reallife 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 preloaded in the ReadOut 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 ^{86}Kr и ^{209}Bi 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 twolayer
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 twoband Hubbard model of superconductivity"
Abstract:
The Green function (GF) equation of motion technique for solving the effective twoband Hubbard model of highTc 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 GMFAGFs, an approximation procedure based on the identification and elimination of exponentially small quantities is described. It secures the reduction of the correlation order to GMFAGF 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 formfactors 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 nucleusnucleus 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 BNBGRID: 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 nucleusnucleus 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 onedimensional nonstationary Dirac equation and onedimensional relativistic exactly solvable models"
Abstract:
A onedimensional Dirac equation is introduced. The relation between onedimensional and fourdimensional Dirac equations is demonstrated. The method of Darboux transformation operators is generalized to the onedimensional 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 onedimensional 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 pseudoscalar potentials.
A method for constructing Green’s function of the regular boundary problem for the one dimensional stationary Dirac equation with a selfconjugate 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 nucleusnucleus 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 (ITGDOPS) in frames of the project LCGSA3/CERNINTAS (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) 