WorldWideScience

Sample records for strong education system

  1. Changing societies and four tasks of schooling: Challenges for strongly differentiated educational systems

    Science.gov (United States)

    van de Werfhorst, Herman G.

    2014-05-01

    Changing labour markets, increased calls for selection and excellence, and increased diversity and individualisation have repercussions on how educational systems can prepare youth for work, optimise knowledge production, achieve equality of opportunity, and socialise students into active civic engagement. This paper discusses four central tasks of schooling and examines to what extent societal developments challenge education policy to deliver on the tasks at hand. Particular attention is given to the challenges Europe's strongly diversified educational systems are currently facing. Both the Netherlands and Germany, for example, have been offering vocationally-oriented pathways alongside traditional academic higher education for some time. But today's ongoing changes in job descriptions, mainly due to ever-accelerating technological developments, are causing a risk of skills obsolescence which can only be avoided by continuous upskilling and/or reskilling of a sufficiently flexible workforce. Overcoming differences of intelligence as well as differences of diverse socioeconomic, ethnic and linguistic backgrounds by way of education is another challenge, as is fostering "soft" skills and political awareness. This paper investigates the effectiveness of current education systems in preparing citizens for a functioning modern society.

  2. Changing societies and four tasks of schooling: Challenges for strongly differentiated educational systems

    NARCIS (Netherlands)

    van de Werfhorst, H.G.

    2014-01-01

    Changing labour markets, increased calls for selection and excellence, and increased diversity and individualisation have repercussions on how educational systems can prepare youth for work, optimise knowledge production, achieve equality of opportunity, and socialise students into active civic

  3. Strongly correlated systems experimental techniques

    CERN Document Server

    Mancini, Ferdinando

    2015-01-01

    The continuous evolution and development of experimental techniques is at the basis of any fundamental achievement in modern physics. Strongly correlated systems (SCS), more than any other, need to be investigated through the greatest variety of experimental techniques in order to unveil and crosscheck the numerous and puzzling anomalous behaviors characterizing them. The study of SCS fostered the improvement of many old experimental techniques, but also the advent of many new ones just invented in order to analyze the complex behaviors of these systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and materials science, belong to this class of systems. The volume presents a representative collection of the modern experimental techniques specifically tailored for the analysis of strongly correlated systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognize...

  4. Strongly Correlated Systems Theoretical Methods

    CERN Document Server

    Avella, Adolfo

    2012-01-01

    The volume presents, for the very first time, an exhaustive collection of those modern theoretical methods specifically tailored for the analysis of Strongly Correlated Systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and materials science, belong to this class of systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognized main contributors. The exposition has a clear pedagogical cut and fully reports on the most relevant case study where the specific technique showed to be very successful in describing and enlightening the puzzling physics of a particular strongly correlated system. The book is intended for advanced graduate students and post-docs in the field as textbook and/or main reference, but also for other researchers in the field who appreciates consulting a single, but comprehensive, source or wishes to get acquainted, in a as painless as po...

  5. Strongly correlated systems numerical methods

    CERN Document Server

    Mancini, Ferdinando

    2013-01-01

    This volume presents, for the very first time, an exhaustive collection of those modern numerical methods specifically tailored for the analysis of Strongly Correlated Systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and material science, belong to this class of systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognized main contributors. The exposition has a clear pedagogical cut and fully reports on the most relevant case study where the specific technique showed to be very successful in describing and enlightening the puzzling physics of a particular strongly correlated system. The book is intended for advanced graduate students and post-docs in the field as textbook and/or main reference, but also for other researchers in the field who appreciate consulting a single, but comprehensive, source or wishes to get acquainted, in a as painless as possi...

  6. PREFACE: Strongly correlated electron systems Strongly correlated electron systems

    Science.gov (United States)

    Saxena, Siddharth S.; Littlewood, P. B.

    2012-07-01

    This special section is dedicated to the Strongly Correlated Electron Systems Conference (SCES) 2011, which was held from 29 August-3 September 2011, in Cambridge, UK. SCES'2011 is dedicated to 100 years of superconductivity and covers a range of topics in the area of strongly correlated systems. The correlated electronic and magnetic materials featured include f-electron based heavy fermion intermetallics and d-electron based transition metal compounds. The selected papers derived from invited presentations seek to deepen our understanding of the rich physical phenomena that arise from correlation effects. The focus is on quantum phase transitions, non-Fermi liquid phenomena, quantum magnetism, unconventional superconductivity and metal-insulator transitions. Both experimental and theoretical work is presented. Based on fundamental advances in the understanding of electronic materials, much of 20th century materials physics was driven by miniaturisation and integration in the electronics industry to the current generation of nanometre scale devices. The achievements of this industry have brought unprecedented advances to society and well-being, and no doubt there is much further to go—note that this progress is founded on investments and studies in the fundamentals of condensed matter physics from more than 50 years ago. Nevertheless, the defining challenges for the 21st century will lie in the discovery in science, and deployment through engineering, of technologies that can deliver the scale needed to have an impact on the sustainability agenda. Thus the big developments in nanotechnology may lie not in the pursuit of yet smaller transistors, but in the design of new structures that can revolutionise the performance of solar cells, batteries, fuel cells, light-weight structural materials, refrigeration, water purification, etc. The science presented in the papers of this special section also highlights the underlying interest in energy-dense materials, which

  7. EDITORIAL: Strongly correlated electron systems Strongly correlated electron systems

    Science.gov (United States)

    Ronning, Filip; Batista, Cristian

    2011-03-01

    Strongly correlated electrons is an exciting and diverse field in condensed matter physics. This special issue aims to capture some of that excitement and recent developments in the field. Given that this issue was inspired by the 2010 International Conference on Strongly Correlated Electron Systems (SCES 2010), we briefly give some history in order to place this issue in context. The 2010 International Conference on Strongly Correlated Electron Systems was held in Santa Fe, New Mexico, a reunion of sorts from the 1989 International Conference on the Physics of Highly Correlated Electron Systems that also convened in Santa Fe. SCES 2010—co-chaired by John Sarrao and Joe Thompson—followed the tradition of earlier conferences, in this century, hosted by Buzios (2008), Houston (2007), Vienna (2005), Karlsruhe (2004), Krakow (2002) and Ann Arbor (2001). Every three years since 1997, SCES has joined the International Conference on Magnetism (ICM), held in Recife (2000), Rome (2003), Kyoto (2006) and Karlsruhe (2009). Like its predecessors, SCES 2010 topics included strongly correlated f- and d-electron systems, heavy-fermion behaviors, quantum-phase transitions, non-Fermi liquid phenomena, unconventional superconductivity, and emergent states that arise from electronic correlations. Recent developments from studies of quantum magnetism and cold atoms complemented the traditional subjects and were included in SCES 2010. 2010 celebrated the 400th anniversary of Santa Fe as well as the birth of astronomy. So what's the connection to SCES? The Dutch invention of the first practical telescope and its use by Galileo in 1610 and subsequent years overturned dogma that the sun revolved about the earth. This revolutionary, and at the time heretical, conclusion required innovative combinations of new instrumentation, observation and mathematics. These same combinations are just as important 400 years later and are the foundation of scientific discoveries that were discussed

  8. Universal behavior of strongly correlated Fermi systems

    Energy Technology Data Exchange (ETDEWEB)

    Shaginyan, Vasilii R [B.P. Konstantinov St. Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, Gatchina, Leningrad region, Rusian Federation (Russian Federation); Amusia, M Ya [A.F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg (Russian Federation); Popov, Konstantin G [Komi Scientific Center, Ural Branch of the Russian Academy of Sciences, Syktyvkar (Russian Federation)

    2007-06-30

    This review discusses the construction of a theory and the analysis of phenomena occurring in strongly correlated Fermi systems such as high-T{sub c} superconductors, heavy-fermion metals, and quasi-two-dimensional Fermi systems. It is shown that the basic properties and the universal behavior of strongly correlated Fermi systems can be described in the framework of the Fermi-condensate quantum phase transition and the well-known Landau paradigm of quasiparticles and the order parameter. The concept of fermion condensation may be fruitful in studying neutron stars, finite Fermi systems, ultra-cold gases in traps, and quark plasma. (reviews of topical problems)

  9. Universal behavior of strongly correlated Fermi systems

    International Nuclear Information System (INIS)

    Shaginyan, Vasilii R; Amusia, M Ya; Popov, Konstantin G

    2007-01-01

    This review discusses the construction of a theory and the analysis of phenomena occurring in strongly correlated Fermi systems such as high-T c superconductors, heavy-fermion metals, and quasi-two-dimensional Fermi systems. It is shown that the basic properties and the universal behavior of strongly correlated Fermi systems can be described in the framework of the Fermi-condensate quantum phase transition and the well-known Landau paradigm of quasiparticles and the order parameter. The concept of fermion condensation may be fruitful in studying neutron stars, finite Fermi systems, ultra-cold gases in traps, and quark plasma. (reviews of topical problems)

  10. Chaos desynchronization in strongly coupled systems

    International Nuclear Information System (INIS)

    Wu Ye; Liu Weiqing; Xiao, Jinghua; Zhan Meng

    2007-01-01

    The dynamics of chaos desynchronization in strongly coupled oscillator systems is studied. We find a new bifurcation from synchronous chaotic state, chaotic short wave bifurcation, i.e. a chaotic desynchronization attractor is new born in the systems due to chaos desynchronization. In comparison with the usual periodic short wave bifurcation, very rich but distinct phenomena are observed

  11. CTE: Education for a Strong Economy

    Science.gov (United States)

    Conneely, Nancy; Hyslop, Alisha

    2018-01-01

    For nearly a century, career and technical education (CTE) programs across the United States have focused on equipping students with technical and life skills to help them become productive citizens. This brief report presents the benefits of CTE.

  12. Impurity screening in strongly coupled plasma systems

    CERN Document Server

    Kyrkos, S

    2003-01-01

    We present an overview of the problem of screening of an impurity in a strongly coupled one-component plasma within the framework of the linear response (LR) theory. We consider 3D, 2D and quasi-2D layered systems. For a strongly coupled plasma the LR can be determined by way of the known S(k) structure functions. In general, an oscillating screening potential with local overscreening and antiscreening regions emerges. In the case of the bilayer, this phenomenon becomes global, as overscreening develops in the layer of the impurity and antiscreening in the adjacent layer. We comment on the limitations of the LR theory in the strong coupling situation.

  13. <strong>On Determinism in Modal Transition Systems>

    DEFF Research Database (Denmark)

    Benes, Nikola; Kretinsky, Jan; Larsen, Kim Guldstrand

    2009-01-01

    Modal transition systems (MTS) is a formalism which extends the classical notion of labelled transition systems by introducing transitions of two types: must transitions that have to be present in any implementation of the MTS and may transitions that are allowed but not required. The MTS framewo....... In the present article, we provide a comprehensive account of the MTS framework in the deterministic setting. We study a number of problems previously considered on MTS and point out to what extend we can expect better results under the restriction of determinism....

  14. Quantum Transport in Strongly Correlated Systems

    DEFF Research Database (Denmark)

    Bohr, Dan

    2007-01-01

    the density matrix renormalization group (DMRG) method. We present two DMRG setups for calculating the linear conductance of strongly correlated nanostructures in the infinitesimal source-drain voltage regime. The first setup describes the leads by modified real-space tight-binding chains, whereas the second...... screening plays a much less significant role than in bulk systems due to the reduced size of the objects, therefore making it necessary to consider the importance of correlations between electrons. The work presented in this thesis deals with quantum transport through strongly correlated systems using....... Thus both coherence and correlation effects are important in this model, and the methods applied should be able to handle both these effects rigorously. We present the DMRG setup for this model and benchmark against existing Greens function results for the model. Then we present initial DMRG results...

  15. Phase diagram of strongly correlated Fermi systems

    International Nuclear Information System (INIS)

    Zverev, M.V.; Khodel', V.A.; Baldo, M.

    2000-01-01

    Phase transitions in uniform Fermi systems with repulsive forces between the particles caused by restructuring of quasiparticle filling n(p) are analyzed. It is found that in terms of variables, i.e. density ρ, nondimensional binding constant η, phase diagram of a strongly correlated Fermi system for rather a wide class of interactions reminds of a puff-pastry pie. Its upper part is filled with fermion condensate, the lower one - with normal Fermi-liquid. They are separated by a narrow interlayer - the Lifshits phase, characterized by the Fermi multibound surface [ru

  16. Finite temperature system of strongly interacting baryons

    Energy Technology Data Exchange (ETDEWEB)

    Bowers, R.L.; Gleeson, A.M.; Pedigo, R.D.; Wheeler, J.W.

    1976-07-01

    A fully relativistic finite temperature many body theory is constructed and used to examine the bulk properties of a system of strongly interacting baryons. The strong interactions are described by a two parameter phenomenological model fit to a simple description of nuclear matter at T = 0. The zero temperature equation of state for such a system which has already been discussed in the literature was developed to give a realistic description of nuclear matter. The model presented here is the exact finite temperature extension of that model. The effect of the inclusion of baryon pairs for T greater than or equal to 2mc/sup 2//k is discussed in detail. The phase transition identified with nuclear matter vanishes for system temperatures in excess of T/sub C/ = 1.034 x 10/sup 11/ /sup 0/K. All values of epsilon (P,T) correspond to systems that are causal in the sense that the locally determined speed of sound never exceeds the speed of light.

  17. Finite temperature system of strongly interacting baryons

    International Nuclear Information System (INIS)

    Bowers, R.L.; Gleeson, A.M.; Pedigo, R.D.; Wheeler, J.W.

    1976-07-01

    A fully relativistic finite temperature many body theory is constructed and used to examine the bulk properties of a system of strongly interacting baryons. The strong interactions are described by a two parameter phenomenological model fit to a simple description of nuclear matter at T = 0. The zero temperature equation of state for such a system which has already been discussed in the literature was developed to give a realistic description of nuclear matter. The model presented here is the exact finite temperature extension of that model. The effect of the inclusion of baryon pairs for T greater than or equal to 2mc 2 /k is discussed in detail. The phase transition identified with nuclear matter vanishes for system temperatures in excess of T/sub C/ = 1.034 x 10 11 0 K. All values of epsilon (P,T) correspond to systems that are causal in the sense that the locally determined speed of sound never exceeds the speed of light

  18. NMR study of strongly correlated electron systems

    Science.gov (United States)

    Kitaoka, Y.; Tou, H.; Zheng, G.-q.; Ishida, K.; Asayama, K.; Kobayashi, T. C.; Kohda, A.; Takeshita, N.; Amaya, K.; Onuki, Y.; Geibel, G.; Schank, C.; Steglich, F.

    1995-02-01

    Various types of ground states in strongly correlated electron systems have been systematically investigated by means of NMR/NQR at low temperatures under high magnetic field and pressure. We focus on two well-known heavy-electron families, CeCu 2X 2 (X = Si and Ge) (Ce(122)) and UM 2Al 3 (M = Ni and Pd) (U(123)). The Cu NQR experiments on CeCu 2X 2 under high pressure indicate that the physical property of CeCu 2Ge 2 at high pressure, i.e. above the transition at 7.6 GPa from antiferromagnetic (AF) to superconductivity, are clearly related to tha CeCu 2Si 2 at ambient pressure. In addition to the H-T phase diagram established below 7 T, NMR and specific heat experiments on polycrystal CeCu 2.05Si 2 have revealed the presence of a new phase above 7 T. In a high-quality polycrystal of UPd 2Al 3 with a record high- Tc of 2 K at ambient pressure and the narrowest Al NQR line width, the nuclear-spin lattice relaxation rate, 27(1/ T1) measured in zero field has been found to obey the T3 law down to 0.13 K, giving strong evidence that the energy gap vanishes along lines on the Fermi surface. Thus it seems that all heavy-electron superconductors exhibit lines of zero gap, regardless of their different magnetic properties.

  19. Weak and strong typicality in quantum systems.

    Science.gov (United States)

    Santos, Lea F; Polkovnikov, Anatoli; Rigol, Marcos

    2012-07-01

    We study the properties of mixed states obtained from eigenstates of many-body lattice Hamiltonians after tracing out part of the lattice. Two scenarios emerge for generic systems: (i) The diagonal entropy becomes equivalent to the thermodynamic entropy when a few sites are traced out (weak typicality); and (ii) the von Neumann (entanglement) entropy becomes equivalent to the thermodynamic entropy when a large fraction of the lattice is traced out (strong typicality). Remarkably, the results for few-body observables obtained with the reduced, diagonal, and canonical density matrices are very similar to each other, no matter which fraction of the lattice is traced out. Hence, for all physical quantities studied here, the results in the diagonal ensemble match the thermal predictions.

  20. Kinetic theory for strongly coupled Coulomb systems

    Science.gov (United States)

    Dufty, James; Wrighton, Jeffrey

    2018-01-01

    The calculation of dynamical properties for matter under extreme conditions is a challenging task. The popular Kubo-Greenwood model exploits elements from equilibrium density-functional theory (DFT) that allow a detailed treatment of electron correlations, but its origin is largely phenomenological; traditional kinetic theories have a more secure foundation but are limited to weak ion-electron interactions. The objective here is to show how a combination of the two evolves naturally from the short-time limit for the generator of the effective single-electron dynamics governing time correlation functions without such limitations. This provides a theoretical context for the current DFT-related approach, the Kubo-Greenwood model, while showing the nature of its corrections. The method is to calculate the short-time dynamics in the single-electron subspace for a given configuration of the ions. This differs from the usual kinetic theory approach in which an average over the ions is performed as well. In this way the effective ion-electron interaction includes strong Coulomb coupling and is shown to be determined from DFT. The correlation functions have the form of the random-phase approximation for an inhomogeneous system but with renormalized ion-electron and electron-electron potentials. The dynamic structure function, density response function, and electrical conductivity are calculated as examples. The static local field corrections in the dielectric function are identified in this way. The current analysis is limited to semiclassical electrons (quantum statistical potentials), so important quantum conditions are excluded. However, a quantization of the kinetic theory is identified for broader application while awaiting its detailed derivation.

  1. Education in the Learning Economy: a European perspective<strong/>

    DEFF Research Database (Denmark)

    Lundvall, Bengt-Åke; Rasmussen, Palle; Lorenz, Edward

    2008-01-01

    The knowledge-based and the learning economy perspectives have in common that they point to an inherent tendency toward a polarisation in labour markets between people with strong and people with weak educational foundation. On this background we discuss how a movement toward mode 2 learning may...

  2. Strong-coupling diffusion in relativistic systems

    Indian Academy of Sciences (India)

    hanced values needed to interpret the data at higher energies point towards the importance of strong-coupling effects. ... when all secondary particles have been created. For short times in the initial phase ... It is decisive for a proper representation of the available data for relativistic heavy-ion collisions at and beyond SPS.

  3. Strong-coupling diffusion in relativistic systems

    Indian Academy of Sciences (India)

    Different from the early universe, heavy-ion collisions at very high energies do not reach statistical equilibrium, although thermal models explain many of their features. To account for nonequilibrium strong-coupling effects, a Fokker–Planck equation with time-dependent diffusion coefficient is proposed. A schematic model ...

  4. Strong coupling effects in hybrid plexitonic systems

    Science.gov (United States)

    Melnikau, Dzmitry; Esteban, Ruben; Govyadinov, Alexander A.; Savateeva, Diana; Simon, Thomas; Sánchez-Iglesias, Ana; Grzelczak, Marek; Schmidt, Mikolaj K.; Urban, Alexander S.; Liz-Marzán, Luis M.; Feldmann, Jochen; Aizpurua, Javier; Rakovich, Yury P.

    2017-08-01

    We investigated the interactions between localized plasmons in gold nanorods and excitons in J-aggregates and were able to track an anticrossing behavior of the hybridized modes both in the extinction and in the photoluminescence spectra of this hybrid system. We identified the nonlinear optical behavior of this system by transient absorption spectroscopy. Finally using magnetic circular dichroism spectroscopy we showed that nonmagnetic organic molecules exhibit magnetooptical response due to binding to a plasmonic nanoparticles. In our experiments we also studied the effect of detuning as well as the effect of off- and on resonance excitation on the hybrid states

  5. TRANSPORT PROPERTIES OF THE STRONGLY CORRELATED SYSTEMS

    Directory of Open Access Journals (Sweden)

    T.Domanski

    2004-01-01

    Full Text Available The transport properties of various systems are studied here in the context of three different models. These are: - the disordered Hubbard model applicable to correlated binary alloys with a general disorder, - the Anderson model used in describing the Kondo physics of a quantum dot connected to the external superconducting leads, and - the Ranninger-Robaszkiewicz model applied to the study of optical properties of the system with preformed electron pairs above the temperature of transition to the superconducting state. We calculate the density of states, specific heat, the Wilson ratio and conductivity of the correlated binary alloy with off-diagonal disorder. We investigate the conditions under which the Kondo peak appears in the density of states and in the conductance of a dot coupled to the external superconducting leads. We analyze the effect of the pseudogap on the optical spectra in the high temperature superconductors described by the boson-fermion model.

  6. Final Report of Strongly Interacting Fermion Systems

    International Nuclear Information System (INIS)

    Wilkins, J. W.

    2001-01-01

    There has been significant progress in three broad areas: (A) Optical properties, (B) Large-scale computations, and (C) Many-body systems. In this summary the emphasis is primarily on those papers that point to the research plans. At the same time, some important analytic work is not neglected, some of it even appearing in the description of large-scale Computations. Indeed one of the aims of such computations is to give new insights which lead to development of models capable of simple analytic or nearly analytic analysis

  7. Quantum Liquid Crystal Phases in Strongly Correlated Fermionic Systems

    Science.gov (United States)

    Sun, Kai

    2009-01-01

    This thesis is devoted to the investigation of the quantum liquid crystal phases in strongly correlated electronic systems. Such phases are characterized by their partially broken spatial symmetries and are observed in various strongly correlated systems as being summarized in Chapter 1. Although quantum liquid crystal phases often involve…

  8. Advocacy for School Leaders: Becoming a Strong Voice for Education

    Science.gov (United States)

    Whitaker, Sandra

    2007-01-01

    In today's political and global world, it's not enough to remain a solid educational leader; leaders must become advocates for education--on Capitol Hill, in state legislatures, and within communities. In this book, Sandra Whitaker examines key issues facing education, demonstrates methods for unpacking the issues, and discusses strategies to…

  9. Response of MDOF strongly nonlinear systems to fractional Gaussian noises

    Energy Technology Data Exchange (ETDEWEB)

    Deng, Mao-Lin; Zhu, Wei-Qiu, E-mail: wqzhu@zju.edu.cn [Department of Mechanics, State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027 (China)

    2016-08-15

    In the present paper, multi-degree-of-freedom strongly nonlinear systems are modeled as quasi-Hamiltonian systems and the stochastic averaging method for quasi-Hamiltonian systems (including quasi-non-integrable, completely integrable and non-resonant, completely integrable and resonant, partially integrable and non-resonant, and partially integrable and resonant Hamiltonian systems) driven by fractional Gaussian noise is introduced. The averaged fractional stochastic differential equations (SDEs) are derived. The simulation results for some examples show that the averaged SDEs can be used to predict the response of the original systems and the simulation time for the averaged SDEs is less than that for the original systems.

  10. Some Applications of Holography to Study Strongly Correlated Systems

    Directory of Open Access Journals (Sweden)

    Bhatnagar Neha

    2018-01-01

    Full Text Available In this work, we study the transport coefficients of strongly coupled condensed matter systems using gauge/gravity duality (holography. We consider examples from the real world and evaluate the conductivities from their gravity duals. Adopting the bottom-up approach of holography, we obtain the frequency response of the conductivity for (1+1-dimensional systems. We also evaluate the DC conductivities for non-relativistic condensed matter systems with hyperscaling violating geometry.

  11. The Professional Educator: Union Strong before and after the Storm

    Science.gov (United States)

    Capo, Zeph

    2018-01-01

    It's no secret that organized labor and public education face a time of great uncertainty. Our country's current president and secretary of education, according to this author, have made clear their intent to support corporate greed at the expense of working people and their unions and to champion privatization schemes that undermine public…

  12. Linear operator inequalities for strongly stable weakly regular linear systems

    NARCIS (Netherlands)

    Curtain, RF

    2001-01-01

    We consider the question of the existence of solutions to certain linear operator inequalities (Lur'e equations) for strongly stable, weakly regular linear systems with generating operators A, B, C, 0. These operator inequalities are related to the spectral factorization of an associated Popov

  13. Glassy states in fermionic systems with strong disorder and interactions

    Science.gov (United States)

    Schwab, David J.; Chakravarty, Sudip

    2009-03-01

    We study the competition between interactions and disorder in two dimensions. Whereas a noninteracting system is always Anderson localized by disorder in two dimensions, a pure system can develop a Mott gap for sufficiently strong interactions. Within a simple model, with short-ranged repulsive interactions, we show that, even in the limit of strong interaction, the Mott gap is completely washed out by disorder for an infinite system for dimensions D≤2 , leading to a glassy state. Moreover, the Mott insulator cannot maintain a broken symmetry in the presence of disorder. We then show that the probability of a nonzero gap as a function of system size falls onto a universal curve, reflecting the glassy dynamics. An analytic calculation is also presented in one dimension that provides further insight into the nature of slow dynamics.

  14. Colloquium: Strong-field phenomena in periodic systems

    Science.gov (United States)

    Kruchinin, Stanislav Yu.; Krausz, Ferenc; Yakovlev, Vladislav S.

    2018-04-01

    The advent of visible-infrared laser pulses carrying a substantial fraction of their energy in a single field oscillation cycle has opened a new era in the experimental investigation of ultrafast processes in semiconductors and dielectrics (bulk as well as nanostructured), motivated by the quest for the ultimate frontiers of electron-based signal metrology and processing. Exploring ways to approach those frontiers requires insight into the physics underlying the interaction of strong high-frequency (optical) fields with electrons moving in periodic potentials. This Colloquium aims at providing this insight. Introduction to the foundations of strong-field phenomena defines and compares regimes of field-matter interaction in periodic systems, including (perfect) crystals as well as optical and semiconductor superlattices, followed by a review of recent experimental advances in the study of strong-field dynamics in crystals and nanostructures. Avenues toward measuring and controlling electronic processes up to petahertz frequencies are discussed.

  15. Theory and simulation of strong correlations in quantum Coulomb systems

    Science.gov (United States)

    Bonitz, M.; Semkat, D.; Filinov, A.; Golubnychyi, V.; Kremp, D.; Gericke, D. O.; Murillo, M. S.; Filinov, V.; Fortov, V.; Hoyer, W.; Koch, S. W.

    2003-06-01

    Strong correlations in quantum Coulomb systems (QCS) are attracting increasing interest in many fields ranging from dense plasmas and semiconductors to metal clusters and ultracold trapped ions. Examples are bound states in dense plasmas (atoms, molecules, clusters) and semiconductors (excitons, trions, biexcitons) or Coulomb crystals. We present first-principle simulation results of these systems including path integral Monte Carlo simulations of the equilibrium behaviour of dense hydrogen and electron-hole plasmas and molecular dynamics and quantum kinetic theory simulations of the nonequilibrium properties of QCS. Finally, we critically assess potential and limitations of the various methods in their application to Coulomb systems.

  16. Interplay of Anderson localization and strong interaction in disordered systems

    Energy Technology Data Exchange (ETDEWEB)

    Henseler, Peter

    2010-01-15

    We study the interplay of disorder localization and strong local interactions within the Anderson-Hubbard model. Taking into account local Mott-Hubbard physics and static screening of the disorder potential, the system is mapped onto an effective single-particle Anderson model, which is studied within the self-consistent theory of electron localization. For fermions, we find rich nonmonotonic behavior of the localization length {xi}, particularly in two-dimensional systems, including an interaction-induced exponential enhancement of {xi} for small and intermediate disorders and a strong reduction of {xi} due to hopping suppression by strong interactions. In three dimensions, we identify for half filling a Mott-Hubbard-assisted Anderson localized phase existing between the metallic and the Mott-Hubbard-gapped phases. For small U there is re-entrant behavior from the Anderson localized phase to the metallic phase. For bosons, the unrestricted particle occupation number per lattice site yields a monotonic enhancement of {xi} as a function of decreasing interaction, which we assume to persist until the superfluid Bose-Einstein condensate phase is entered. Besides, we study cold atomic gases expanding, by a diffusion process, in a weak random potential. We show that the density-density correlation function of the expanding gas is strongly affected by disorder and we estimate the typical size of a speckle spot, i.e., a region of enhanced or depleted density. Both a Fermi gas and a Bose-Einstein condensate (in a mean-field approach) are considered. (orig.)

  17. Interplay of Anderson localization and strong interaction in disordered systems

    International Nuclear Information System (INIS)

    Henseler, Peter

    2010-01-01

    We study the interplay of disorder localization and strong local interactions within the Anderson-Hubbard model. Taking into account local Mott-Hubbard physics and static screening of the disorder potential, the system is mapped onto an effective single-particle Anderson model, which is studied within the self-consistent theory of electron localization. For fermions, we find rich nonmonotonic behavior of the localization length ξ, particularly in two-dimensional systems, including an interaction-induced exponential enhancement of ξ for small and intermediate disorders and a strong reduction of ξ due to hopping suppression by strong interactions. In three dimensions, we identify for half filling a Mott-Hubbard-assisted Anderson localized phase existing between the metallic and the Mott-Hubbard-gapped phases. For small U there is re-entrant behavior from the Anderson localized phase to the metallic phase. For bosons, the unrestricted particle occupation number per lattice site yields a monotonic enhancement of ξ as a function of decreasing interaction, which we assume to persist until the superfluid Bose-Einstein condensate phase is entered. Besides, we study cold atomic gases expanding, by a diffusion process, in a weak random potential. We show that the density-density correlation function of the expanding gas is strongly affected by disorder and we estimate the typical size of a speckle spot, i.e., a region of enhanced or depleted density. Both a Fermi gas and a Bose-Einstein condensate (in a mean-field approach) are considered. (orig.)

  18. Bound states in strongly correlated magnetic and electronic systems

    International Nuclear Information System (INIS)

    Trebst, S.

    2002-02-01

    A novel strong coupling expansion method to calculate two-particle spectra of quantum lattice models is developed. The technique can be used to study bosonic and fermionic models and in principle it can be applied to systems in any dimension. A number of strongly correlated magnetic and electronic systems are examined including the two-leg spin-half Heisenberg ladder, the dimerized Heisenberg chain with a frustrating next-nearest neighbor interaction, coupled Heisenberg ladders, and the one-dimensional Kondo lattice model. In the various models distinct bound states are found below the two-particle continuum. Quantitative calculations of the dispersion, coherence length and binding energy of these bound states are used to describe spectroscopic experiments on (Ca,La) 14 Cu 24 O 41 and NaV 2 O 5 . (orig.)

  19. Exact Kohn-Sham potential of strongly correlated finite systems

    International Nuclear Information System (INIS)

    Helbig, N.; Tokatly, I. V.; Rubio, A.

    2009-01-01

    The dissociation of molecules, even the most simple hydrogen molecule, cannot be described accurately within density functional theory because none of the currently available functionals accounts for strong on-site correlation. This problem led to a discussion of properties that the local Kohn-Sham potential has to satisfy in order to correctly describe strongly correlated systems. We derive an analytic expression for the nontrivial form of the Kohn-Sham potential in between the two fragments for the dissociation of a single bond. We show that the numerical calculations for a one-dimensional two-electron model system indeed approach and reach this limit. It is shown that the functional form of the potential is universal, i.e., independent of the details of the two fragments.

  20. Neutron Scattering and Its Application to Strongly Correlated Systems

    OpenAIRE

    Zaliznyak, Igor A.; Tranquada, John M.

    2013-01-01

    Neutron scattering is a powerful probe of strongly correlated systems. It can directly detect common phenomena such as magnetic order, and can be used to determine the coupling between magnetic moments through measurements of the spin-wave dispersions. In the absence of magnetic order, one can detect diffuse scattering and dynamic correlations. Neutrons are also sensitive to the arrangement of atoms in a solid (crystal structure) and lattice dynamics (phonons). In this chapter, we provide an ...

  1. Establishment of Antakya Basin Strong Ground Motion Monitoring System

    Science.gov (United States)

    Durukal, E.; Özel, O.; Bikce, M.; Geneş, M. C.; Kacın, S.; Erdik, M.; Safak, E.; Över, S.

    2009-04-01

    Turkey is located in one of the most active earthquake zones of the world. The cities located along the North Anatolian Fault (NAF) and the East Anatolian Fault (EAF) are exposed to significant earthquake hazard. The Hatay province near the southern terminus of the EAF has always experienced a significant seismic activity, since it is on the intersection of the northernmost segment of Dead Sea Fault Zone coming from the south, with the Cyprean Arc approaching from south-west. Historical records extending over the last 2000 years indicate that Antakya, founded in the 3rd century B.C., is effected by intensity IX-X earthquakes every 150 years. In the region, the last destructive earthquake occurred in 1872. Destructive earthquakes should be expected in the region in the near future similar to the ones that occurred in the past. The strong response of sedimentary basins to seismic waves was largely responsible for the damage produced by the devastating earthquakes of 1985 Michoacan Earthquake which severely damaged parts of Mexico City, and the 1988 Spitak Earthquake which destroyed most of Leninakan, Armenia. Much of this devastating response was explained by the conversion of seismic body waves to surface waves at the sediment/rock contacts of sedimentary basins. "Antakya Basin Strong Ground Motion Monitoring System" is set up with the aim of monitoring the earthquake response of the Antakya Basin, contributing to our understanding of basin response, contributing to earthquake risk assessment of Antakya, monitoring of regional earthquakes and determining the effects of local and regional earthquakes on the urban environment of Antakya. The soil properties beneath the strong motion stations (S-Wave velocity structure and dominant soil frequency) are determined by array measurements that involve broad-band seismometers. The strong motion monitoring system consists of six instruments installed in small buildings. The stations form a straight line along the short axis

  2. Quantum simulation of strongly correlated condensed matter systems

    Science.gov (United States)

    Hofstetter, W.; Qin, T.

    2018-04-01

    We review recent experimental and theoretical progress in realizing and simulating many-body phases of ultracold atoms in optical lattices, which gives access to analog quantum simulations of fundamental model Hamiltonians for strongly correlated condensed matter systems, such as the Hubbard model. After a general introduction to quantum gases in optical lattices, their preparation and cooling, and measurement techniques for relevant observables, we focus on several examples, where quantum simulations of this type have been performed successfully during the past years: Mott-insulator states, itinerant quantum magnetism, disorder-induced localization and its interplay with interactions, and topological quantum states in synthetic gauge fields.

  3. The ESRg matrix for strong field d5 systems

    Directory of Open Access Journals (Sweden)

    McGarvey Bruce R.

    1998-01-01

    Full Text Available This review has tried to collect and correlate all the various equations for the g matrix of strong field d5 systems obtained from different basis sets using full electron and hole formalism calculations. It has corrected mistakes found in the literature and shown how the failure to properly take in symmetry boundary conditions has produced a variety of apparently inconsistent equations in the literature. The review has reexamined the problem of spin-orbit interaction with excited t4e states and finds that the earlier reports that it is zero in octahedral symmetry is not correct. It has shown how redefining what x, y, and z are in the principal coordinate system simplifies, compared to previous methods, the analysis of experimental g values with the equations.

  4. Large linear magnetoresistivity in strongly inhomogeneous planar and layered systems

    International Nuclear Information System (INIS)

    Bulgadaev, S.A.; Kusmartsev, F.V.

    2005-01-01

    Explicit expressions for magnetoresistance R of planar and layered strongly inhomogeneous two-phase systems are obtained, using exact dual transformation, connecting effective conductivities of in-plane isotropic two-phase systems with and without magnetic field. These expressions allow to describe the magnetoresistance of various inhomogeneous media at arbitrary concentrations x and magnetic fields H. All expressions show large linear magnetoresistance effect with different dependencies on the phase concentrations. The corresponding plots of the x- and H-dependencies of R(x,H) are represented for various values, respectively, of magnetic field and concentrations at some values of inhomogeneity parameter. The obtained results show a remarkable similarity with the existing experimental data on linear magnetoresistance in silver chalcogenides Ag 2+δ Se. A possible physical explanation of this similarity is proposed. It is shown that the random, stripe type, structures of inhomogeneities are the most suitable for a fabrication of magnetic sensors and a storage of information at room temperatures

  5. Muon spin relaxation studies in strongly correlated electron systems

    Science.gov (United States)

    Uemura, Y. J.; Luke, G. M.

    1993-05-01

    We describe recent progress of muon spin relaxation (μSR) studies in heavy-fermion (HF) and other strongly correlated electron systems. Measurements of the magnetic field penetration depth λ in HF superconductors UPt 3, URu 2Si 2, UPd 2Al 3 and U 2PtC 2 have revealed that these systems are characterized by large ratios Tc/ TF = 0.1-0.01 of Tc vs Fermi temperature TF derived from λ. This feature is common to high- Tc cuprate and other exotic superconductors. Zero-field μSR studies of magnetic order have elucidated a cross-over from spin glass ordering to nonmagnetic ground states in the ‘quadrupolar Kondo regime’ of (Y 1- xU x)Pd 3, and also suggested a possibility of incommensurate spin-density-wave (SDW) ordering in UNi 2Al 3.

  6. Pedagogy of Attention: Subverting the Strong Language of Intention in Social Justice Education

    Science.gov (United States)

    Desroches, Sarah J.

    2016-01-01

    In this paper, I explore the possibility of social justice education as pedagogy of "attention" rather than simply pedagogy of "intention." Drawing on Gert Biesta's (2010) concept of "strong" education, I begin by explaining how the language of intention in social justice education relies on a discourse in which…

  7. The Electron-Phonon Interaction in Strongly Correlated Systems

    International Nuclear Information System (INIS)

    Castellani, C.; Grilli, M.

    1995-01-01

    We analyze the effect of strong electron-electron repulsion on the electron-phonon interaction from a Fermi-liquid point of view and show that the electron-electron interaction is responsible for vertex corrections, which generically lead to a strong suppression of the electron-phonon coupling in the v F q/ω >>1 region, while such effect is not present when v F q/ω F is the Fermi velocity and q and ω are the transferred momentum and frequency respectively. In particular the e-ph scattering is suppressed in transport properties which are dominated by low-energy-high-momentum processes. On the other hand, analyzing the stability criterion for the compressibility, which involves the effective interactions in the dynamical limit, we show that a sizable electron-phonon interaction can push the system towards a phase-separation instability. Finally a detailed analysis of these ideas is carried out using a slave-boson approach for the infinite-U three-band Hubbard model in the presence of a coupling between the local hole density and a dispersionless optical phonon. (author)

  8. Topological Frequency Conversion in Strongly Driven Quantum Systems

    Directory of Open Access Journals (Sweden)

    Ivar Martin

    2017-10-01

    Full Text Available When a physical system is subjected to a strong external multifrequency drive, its dynamics can be conveniently represented in the multidimensional Floquet lattice. The number of Floquet lattice dimensions equals the number of irrationally-related drive frequencies, and the evolution occurs in response to a built-in effective “electric” field, whose components are proportional to the corresponding drive frequencies. The mapping allows us to engineer and study temporal analogs of many real-space phenomena. Here, we focus on the specific example of a two-level system under a two-frequency drive that induces topologically nontrivial band structure in the 2D Floquet space. The observable consequence of such a construction is the quantized pumping of energy between the sources with frequencies ω_{1} and ω_{2}. When the system is initialized into a Floquet band with the Chern number C, the pumping occurs at a rate P_{12}=-P_{21}=(C/2πℏω_{1}ω_{2}, an exact counterpart of the transverse current in a conventional topological insulator.

  9. Stochastic and Macroscopic Thermodynamics of Strongly Coupled Systems

    Directory of Open Access Journals (Sweden)

    Christopher Jarzynski

    2017-01-01

    Full Text Available We develop a thermodynamic framework that describes a classical system of interest S that is strongly coupled to its thermal environment E. Within this framework, seven key thermodynamic quantities—internal energy, entropy, volume, enthalpy, Gibbs free energy, heat, and work—are defined microscopically. These quantities obey thermodynamic relations including both the first and second law, and they satisfy nonequilibrium fluctuation theorems. We additionally impose a macroscopic consistency condition: When S is large, the quantities defined within our framework scale up to their macroscopic counterparts. By satisfying this condition, we demonstrate that a unifying framework can be developed, which encompasses both stochastic thermodynamics at one end, and macroscopic thermodynamics at the other. A central element in our approach is a thermodynamic definition of the volume of the system of interest, which converges to the usual geometric definition when S is large. We also sketch an alternative framework that satisfies the same consistency conditions. The dynamics of the system and environment are modeled using Hamilton’s equations in the full phase space.

  10. Meso-Structure in Three Strong-lensing Systems

    Science.gov (United States)

    Saha, Prasenjit; Williams, Liliya L. R.; Ferreras, Ignacio

    2007-07-01

    We map substructure in three strong-lensing systems having particularly good image data: the galaxy lens MG J0414+053 and the clusters SDSS J1004+411 and ACO 1689. Our method is to first reconstruct the lens as a pixelated mass map and then subtract off the symmetric part (in the galaxy case) or a projected Navarro-Frenk-White profile (for the cluster lenses). In all three systems we find extended irregular structures, or meso-structures, having of order 10% of the total mass. In J0414+053, the meso-structure suggests a tidal tail connecting the main lens with a nearby galaxy; however, this interpretation is tentative. In the clusters, the identification of meso-structure is more secure, especially in ACO 1689, where two independent sets of lensed images imply very similar meso-structure. In all three cases, the meso-structures are correlated with galaxies but much more extended and massive than the stellar components of single galaxies. Such extended structures cannot plausibly persist in such high-density regions without being mixed; the crossing times are too short. The meso-structures therefore appear to be merging or otherwise dynamically evolving systems.

  11. Entrepreneurial Education in Romanian Education System

    Directory of Open Access Journals (Sweden)

    Mariana Pipirigeanu

    2015-12-01

    Full Text Available EU’ s 2020 strategy is to integrate creativity, innovation and entrepreneurship in the school curriculum by proposing a set of actions implying all students in entrepreneurial activity with a view to devoping theirs skills needed in business market. Governments should revise the legislation in force by eliminating existing administrative barriers and supporting entrepreneurs in crucial stages of the life cycle of a business; The links between schools, universities and business area should be strengthened in oreder to achieve aims proposed by EU’ s 2020 strategy. Entrepreneurial education has an important role in the educational system, having a strong applicative character, as it does emphasize the size of the student’s personality formation act. The purpose of the entrepreneurial education is to promote students’ innovation spirit.

  12. <strong>Actors’ Competencies or Methods? A Case Study of Successful Information Systems Developmentstrong>

    DEFF Research Database (Denmark)

    Omland, Hans Olav; Nielsen, Peter Axel

    2009-01-01

    Research on information systems development methods has by and large acknowledged a significant difference between a method and its use and that the use depends on the situation and the developers, as well as other contingencies. We extend this research and focus in particular on the relationship...

  13. The Singapore Education System.

    Science.gov (United States)

    Journal of Southeast Asian Education, 2000

    2000-01-01

    Describes the education system in Singapore and new initiatives designed to meet the challenges of the new millennium. Singapore has always placed a premium on education and will continue to invest heavily in young people to prepare them for a future characterized by globalization. Emphasis on elementary and secondary education will be accompanied…

  14. PREFACE: International Conference on Strongly Correlated Electron Systems (SCES 2011)

    Science.gov (United States)

    Littlewood, P. B.; Lonzarich, G. G.; Saxena, S. S.; Sutherland, M. L.; Sebastian, S. E.; Artacho, E.; Grosche, F. M.; Hadzibabic, Z.

    2012-11-01

    The Strongly Correlated Electron Systems Conference (SCES) 2011, was held from 29 August-3 September 2011, in Cambridge, UK. SCES'2011 was dedicated to 100 years of superconductivity and covered a range of topics in the area of strongly correlated systems. The correlated electronic and magnetic materials featured include f-electron based heavy fermion intermetallics and d-electron based transition metal compounds. The meeting welcomed to Cambridge 657 participants from 23 countries, who presented 127 talks (including 16 plenary, 57 invited, and 54 contributed) and 736 posters in 40 sessions over five full days of meetings. This proceedings volume contains papers reporting on the science presented at the meeting. This work deepens our understanding of the rich physical phenomena that arise from correlation effects. Strongly correlated systems are known for their remarkable array of emergent phenomena: the traditional subjects of superconductivity, magnetism and metal-insulator transitions have been joined by non-Fermi liquid phenomena, topologically protected quantum states, atomic and photonic gases, and quantum phase transitions. These are some of the most challenging and interesting phenomena in science. As well as the science driver, there is underlying interest in energy-dense materials, which make use of 'small' electrons packed to the highest possible density. These are by definition 'strongly correlated'. For example: good photovoltaics must be efficient optical absorbers, which means that photons will generate tightly bound electron-hole pairs (excitons) that must then be ionised at a heterointerface and transported to contacts; efficient solid state refrigeration depends on substantial entropy changes in a unit cell, with large local electrical or magnetic moments; efficient lighting is in a real sense the inverse of photovoltaics; the limit of an efficient battery is a supercapacitor employing mixed valent ions; fuel cells and solar to fuel conversion

  15. Higher Education's Caste System

    Science.gov (United States)

    Iannone, Ron

    2004-01-01

    In this article, the author discusses the history of the present caste system in higher education. He shows how the public's perception of this caste system is based on image and not usually on the quality of teaching and curriculum in colleges and universities. Finally, he discusses a model for accessibility to higher education and how higher…

  16. Strongly interacting mesoscopic systems of anyons in one dimension

    DEFF Research Database (Denmark)

    Zinner, N. T.

    2015-01-01

    Using the fractional statistical properties of so-called anyonic particles, we present exact solutions for up to six strongly interacting particles in one-dimensional confinement that interpolate the usual bosonic and fermionic limits. Specifically, we consider two-component mixtures of anyons...

  17. Strong Horses-Systems Thinking-Strategic Communication

    Science.gov (United States)

    2009-04-30

    need to encounter it in several contexts: Keller and Segel saw emergence in the slime mold assemblages; Jane Jacobs saw it in city neighborhoods...disinformation, to deliver threats 78 Ibid., 16 79 Ibid., 29 30 intended to instill fear ...Blaisdell, 1970), 165. 53 still feared without a strong naval presence in the Pacific the U.S. would not be able to maintain its sphere of

  18. Towards a large deviation theory for strongly correlated systems

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz, Guiomar, E-mail: guiomar.ruiz@upm.es [Centro Brasileiro de Pesquisas Fisicas and National Institute of Science and Technology for Complex Systems, Rua Xavier Sigaud 150, 22290-180 Rio de Janeiro, RJ (Brazil); Departamento de Matemática Aplicada y Estadística, Universidad Politécnica de Madrid, Pza. Cardenal Cisneros s.n., 28040 Madrid (Spain); Tsallis, Constantino, E-mail: tsallis@cbpf.br [Centro Brasileiro de Pesquisas Fisicas and National Institute of Science and Technology for Complex Systems, Rua Xavier Sigaud 150, 22290-180 Rio de Janeiro, RJ (Brazil); Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501 (United States)

    2012-07-23

    A large-deviation connection of statistical mechanics is provided by N independent binary variables, the (N→∞) limit yielding Gaussian distributions. The probability of n≠N/2 out of N throws is governed by e{sup −Nr}, r related to the entropy. Large deviations for a strong correlated model characterized by indices (Q,γ) are studied, the (N→∞) limit yielding Q-Gaussians (Q→1 recovers a Gaussian). Its large deviations are governed by e{sub q}{sup −Nr{sub q}} (∝1/N{sup 1/(q−1)}, q>1), q=(Q−1)/(γ[3−Q])+1. This illustration opens the door towards a large-deviation foundation of nonextensive statistical mechanics. -- Highlights: ► We introduce the formalism of relative entropy for a single random binary variable and its q-generalization. ► We study a model of N strongly correlated binary random variables and their large-deviation probabilities. ► Large-deviation probability of strongly correlated model exhibits a q-exponential decay whose argument is proportional to N, as extensivity requires. ► Our results point to a q-generalized large deviation theory and suggest a large-deviation foundation of nonextensive statistical mechanics.

  19. Expert Systems in Education.

    Science.gov (United States)

    Hartschuh, Wayne

    This paper argues that the concepts and techniques used in the development of expert systems should be expanded and applied to the field of education, particularly in the area of intelligent tutoring systems. It is noted that expert systems are a well known area of artificial intelligence and have been proven effective in well-defined topic areas.…

  20. Superconductivity in strongly correlated electron systems: successes and open questions

    International Nuclear Information System (INIS)

    Shastry, B. Sriram

    2000-01-01

    Correlated electronic systems and superconductivity is a field which has unique track record of producing exciting new phases of matter. The article gives an overview of trends in solving the problems of superconductivity and correlated electronic systems

  1. Strong Performers and Successful Reformers in Education: Lessons from PISA for Japan

    Science.gov (United States)

    OECD Publishing (NJ1), 2012

    2012-01-01

    For decades Japan has remained at or near the top of international assessments of student learning; and in the past decade, students in Japan have become more engaged in learning. However, the government aspires to improve learning outcomes even further. "Strong Performers and Successful Reformers in Education: Lessons from PISA for…

  2. Nonlinear Response of Strong Nonlinear System Arisen in Polymer Cushion

    Directory of Open Access Journals (Sweden)

    Jun Wang

    2013-01-01

    Full Text Available A dynamic model is proposed for a polymer foam-based nonlinear cushioning system. An accurate analytical solution for the nonlinear free vibration of the system is derived by applying He's variational iteration method, and conditions for resonance are obtained, which should be avoided in the cushioning design.

  3. Scaling of non-Ohmic conduction in strongly correlated systems

    Science.gov (United States)

    Talukdar, D.; Nandi, U. N.; Poddar, A.; Mandal, P.; Bardhan, K. K.

    2012-10-01

    A new scaling formalism is used to analyze nonlinear I-V data in the vicinity of metal-insulator transitions (MIT) in five manganite systems. An exponent, called the nonlinearity exponent, and an onset field for nonlinearity, both characteristic of the system under study, are obtained from the analysis. The onset field is found to have an anomalously low value corroborating the theoretically predicted electronically soft phases. The scaling functions above and below the MIT of a polycrystalline sample are found to be the same but with different exponents which are attributed to the distribution of the MIT temperatures. The applicability of the scaling in manganites underlines the universal response of the disordered systems to electric field.

  4. Energy diffusion in strongly driven quantum chaotic systems

    International Nuclear Information System (INIS)

    Elyutin, P. V.

    2006-01-01

    The energy evolution of a quantum chaotic system under a perturbation that harmonically depends on time is studied in the case of a large perturbation in which the transition rate calculated from the Fermi golden rule exceeds the frequency of the perturbation. It is shown that the energy evolution retains its diffusive character, with a diffusion coefficient that is asymptotically proportional to the magnitude of the perturbation and to the square root of the density of states. The results are supported by numerical calculation. Energy absorption by the system and quantum-classical correlations are discussed

  5. Growing Strong and Healthy with Mister Bone: An Educational Program to Have Strong Bones Later in Life

    Directory of Open Access Journals (Sweden)

    Barbara Pampaloni

    2015-12-01

    Full Text Available Optimal peak bone mass and bone health later in life are favored by a sufficient calcium intake in infancy, childhood and adolescence. The purpose of this study was to test a new educational program created to monitor and to improve calcium and vitamin D intake in children. Nutritional habits in children were evaluated through a food frequency questionnaire (FFQ to assess the intake of calcium, vitamin D, dairy products, and total caloric energy at baseline and after seven months of exposure to a unique educational program applied between November 2013 and May 2014 in 176 schoolchildren (48% male, 52% female attending the fourth and fifth grades of two selected primary schools in Florence, Italy. A significant increase of calcium (from 870 ± 190 to 1100 ± 200 mg/day, p < 0.05, and vitamin D (from 3.6 ± 1.53 to 4.1 ± 2 µg/day intake in children was documented after the educational program. The amount of specific foods important for bone health consumed, such as milk and vegetables, increased significantly, both in male and female children (p < 0.05. The proposed educational program appears to be effective in modifying calcium intake in children, with a significant increase in the consumption of dairy products and vegetables, but without a significant change in the total caloric intake.

  6. Exact tensor network ansatz for strongly interacting systems

    Science.gov (United States)

    Zaletel, Michael P.

    It appears that the tensor network ansatz, while not quite complete, is an efficient coordinate system for the tiny subset of a many-body Hilbert space which can be realized as a low energy state of a local Hamiltonian. However, we don't fully understand precisely which phases are captured by the tensor network ansatz, how to compute their physical observables (even numerically), or how to compute a tensor network representation for a ground state given a microscopic Hamiltonian. These questions are algorithmic in nature, but their resolution is intimately related to understanding the nature of quantum entanglement in many-body systems. For this reason it is useful to compute the tensor network representation of various `model' wavefunctions representative of different phases of matter; this allows us to understand how the entanglement properties of each phase are expressed in the tensor network ansatz, and can serve as test cases for algorithm development. Condensed matter physics has many illuminating model wavefunctions, such as Laughlin's celebrated wave function for the fractional quantum Hall effect, the Bardeen-Cooper-Schrieffer wave function for superconductivity, and Anderson's resonating valence bond ansatz for spin liquids. This thesis presents some results on exact tensor network representations of these model wavefunctions. In addition, a tensor network representation is given for the time evolution operator of a long-range one-dimensional Hamiltonian, which allows one to numerically simulate the time evolution of power-law interacting spin chains as well as two-dimensional strips and cylinders.

  7. Quantum phase transitions of strongly correlated electron systems

    International Nuclear Information System (INIS)

    Imada, Masatoshi

    1998-01-01

    Interacting electrons in solids undergo various quantum phase transitions driven by quantum fluctuations. The quantum transitions take place at zero temperature by changing a parameter to control quantum fluctuations rather than thermal fluctuations. In contrast to classical phase transitions driven by thermal fluctuations, the quantum transitions have many different features where quantum dynamics introduces a source of intrinsic fluctuations tightly connected with spatial correlations and they have been a subject of recent intensive studies as we see below. Interacting electron systems cannot be fully understood without deep analyses of the quantum phase transitions themselves, because they are widely seen and play essential roles in many phenomena. Typical and important examples of the quantum phase transitions include metal-insulator transitions, (2, 3, 4, 5, 6, 7, 8, 9) metal-superconductor transitions, superconductor-insulator transitions, magnetic transitions to antiferromagnetic or ferromagnetic phases in metals as well as in Mott insulators, and charge ordering transitions. Here, we focus on three different types of transitions

  8. ECMI educational system

    DEFF Research Database (Denmark)

    Sørensen, Mads Peter

    The talk presents the ECMI educational system implemented at the ECMI partner universities. It consists of a to year master programme with the two branches Technomathematics and Economathematics. Technomathematics addresses students interested in modelling of technical, physical, chemical...... and biological systems. The course content consists of modelling seminars and introduction to technomathematics. Ordinary and partial differential equations are main ingredients together with scientific computing. Furthermore there are courses in optimization and statistics. The Economathematics branch focuses...... on computational methods for economics, discrete mathematics, optimization, statistics and differential equations. Beside courses in industrial and applied mathematics the students must spent one semester abroad at an ECMI partner university, emphasizing the international aspect of the education. The students must...

  9. Systems Education at Bergen

    Directory of Open Access Journals (Sweden)

    Pål I. Davidsen

    2014-04-01

    Full Text Available At the University of Bergen in Norway, educating students to use computer models and to think systemically about social and economic problems began in the 1970s. The International Masters Program in System Dynamics was established in 1995, and a Ph.D. program began a few years later. Student enrolment doubled in 2010 with the establishment of the European Master Program in System Dynamics. International diversity has been a hallmark of the Bergen program; each year, students come from about 30 different countries and more than 95% of the degrees have been awarded to students from outside of Norway. However, a Bergen systems education is not confined to a classroom in Norway. Projects in developing countries, emerging economies, and developed countries have taken the systems perspective and modeling tools on the road and, increasingly, online. Whatever the delivery mode, the goal is the same: capacity building among international students, planners and managers, and local stakeholders. This paper describes the Bergen program and its impact on systems thinking and modeling throughout the world.

  10. Hyperspherical Treatment of Strongly-Interacting Few-Fermion Systems in One Dimension

    DEFF Research Database (Denmark)

    Volosniev, A. G.; Fedorov, D. V.; Jensen, A. S.

    2015-01-01

    We examine a one-dimensional two-component fermionic system in a trap, assuming that all particles have the same mass and interact through a strong repulsive zero-range force. First we show how a simple system of three strongly interacting particles in a harmonic trap can be treated using...

  11. The Educational System of Tunisia.

    Science.gov (United States)

    Office of Education (DHEW), Washington, DC.

    An overview of the basic system of education in Tunisia is presented in this booklet. Since Tunisia's independence in 1956, the government has emphasized the role of education as a major factor in building a modern nation. The educational system in Tunisia is based on both the nation's own rich cultural background and also on the linguistic and…

  12. Self-Organized Educational Systems.

    Science.gov (United States)

    Saba, Farhad, Ed.

    1999-01-01

    Continues discussion of distance-education systems based on a model consisting of students, teachers, administrators and other professionals in schools, universities, libraries, and other institutions (presented in previous issue). Discusses place- and time-bound education systems; dynamics of education on demand; and characteristics of…

  13. A Study of Strong Stability of Distributed Systems. Ph.D. Thesis

    Science.gov (United States)

    Cataltepe, Tayfun

    1989-01-01

    The strong stability of distributed systems is studied and the problem of characterizing strongly stable semigroups of operators associated with distributed systems is addressed. Main emphasis is on contractive systems. Three different approaches to characterization of strongly stable contractive semigroups are developed. The first one is an operator theoretical approach. Using the theory of dilations, it is shown that every strongly stable contractive semigroup is related to the left shift semigroup on an L(exp 2) space. Then, a decomposition for the state space which identifies strongly stable and unstable states is introduced. Based on this decomposition, conditions for a contractive semigroup to be strongly stable are obtained. Finally, extensions of Lyapunov's equation for distributed parameter systems are investigated. Sufficient conditions for weak and strong stabilities of uniformly bounded semigroups are obtained by relaxing the equivalent norm condition on the right hand side of the Lyanupov equation. These characterizations are then applied to the problem of feedback stabilization. First, it is shown via the state space decomposition that under certain conditions a contractive system (A,B) can be strongly stabilized by the feedback -B(*). Then, application of the extensions of the Lyapunov equation results in sufficient conditions for weak, strong, and exponential stabilizations of contractive systems by the feedback -B(*). Finally, it is shown that for a contractive system, the first derivative of x with respect to time = Ax + Bu (where B is any linear bounded operator), there is a related linear quadratic regulator problem and a corresponding steady state Riccati equation which always has a bounded nonnegative solution.

  14. Nontrivial effects of high-frequency excitation for strongly damped mechanical systems

    DEFF Research Database (Denmark)

    Fidlin, Alexander; Thomsen, Jon Juel

    Some nontrivial effects are investigated, which can occur if strongly damped mechanical systems are subjected to strong high-frequency (HF) excitation. The main result is a theoretical prediction, supported by numerical simulation, that for such systems the (quasi-)equilibrium states can change...... that can be substantial (depending on the strength of the HF excitation) for finite values of the damping. The analysis is focused on the differences between the classic results for weakly damped systems, and new effects for which the strong damping terms are responsible. The analysis is based...... on a slightly modified averaging technique, and includes an elementary example of an elliptically excited pendulum for illustration, alongside with a generalization to a broader class of strongly damped dynamical systems with HF excitation. As an application example, the nontrivial behavior of a classical...

  15. Nontrivial effects of high-frequency excitation for strongly damped mechanical systems

    DEFF Research Database (Denmark)

    Fidlin, Alexander; Thomsen, Jon Juel

    2008-01-01

    Some non-trivial effects are investigated, which can occur if strongly damped mechanical systems are subjected to strong high-frequency (HF) excitation. The main result is a theoretical prediction, supported by numerical simulation, that for such systems the (quasi-)equilibrium states can change...... that can be substantial depending on the strength of the HF excitation) for finite values of the damping. The analysis is focused on the differences between the classic results for weakly damped systems, and new effects for which the strong damping terms are responsible. The analysis is based on a slightly...... modified averaging technique, and includes an elementary example of an elliptically excited pendulum for illustration, alongside with a generalization to a broader class of strongly damped dynamical systems with HF excitation. As an application example, the nontrivial behavior of a classical optimally...

  16. Modified multiple time scale method for solving strongly nonlinear damped forced vibration systems

    Science.gov (United States)

    Razzak, M. A.; Alam, M. Z.; Sharif, M. N.

    2018-03-01

    In this paper, modified multiple time scale (MTS) method is employed to solve strongly nonlinear forced vibration systems. The first-order approximation is only considered in order to avoid complexicity. The formulations and the determination of the solution procedure are very easy and straightforward. The classical multiple time scale (MS) and multiple scales Lindstedt-Poincare method (MSLP) do not give desire result for the strongly damped forced vibration systems with strong damping effects. The main aim of this paper is to remove these limitations. Two examples are considered to illustrate the effectiveness and convenience of the present procedure. The approximate external frequencies and the corresponding approximate solutions are determined by the present method. The results give good coincidence with corresponding numerical solution (considered to be exact) and also provide better result than other existing results. For weak nonlinearities with weak damping effect, the absolute relative error measures (first-order approximate external frequency) in this paper is only 0.07% when amplitude A = 1.5 , while the relative error gives MSLP method is surprisingly 28.81%. Furthermore, for strong nonlinearities with strong damping effect, the absolute relative error found in this article is only 0.02%, whereas the relative error obtained by MSLP method is 24.18%. Therefore, the present method is not only valid for weakly nonlinear damped forced systems, but also gives better result for strongly nonlinear systems with both small and strong damping effect.

  17. Education Systems as Transition Spaces

    Science.gov (United States)

    Tikkanen, Jenni; Bledowski, Piotr; Felczak, Joanna

    2015-01-01

    The changes that have occurred in the field of education over the course of the last couple of decades have been associated with increased demands that are not only placed on individuals from both within and beyond the education system, but also on the support they require to make successful educational choices. One central way this need is being…

  18. Technology based Education System

    DEFF Research Database (Denmark)

    Kant Hiran, Kamal; Doshi, Ruchi; Henten, Anders

    2016-01-01

    Abstract - Education plays a very important role for the development of the country. Education has multiple dimensions from schooling to higher education and research. In all these domains, there is invariably a need for technology based teaching and learning tools are highly demanded in the acad......Abstract - Education plays a very important role for the development of the country. Education has multiple dimensions from schooling to higher education and research. In all these domains, there is invariably a need for technology based teaching and learning tools are highly demanded...... and operational data that is used within a university for daily routine work. This paper presents a hybrid cloud computing model for higher education institutions to share intellectual data. Moreover, it proposes, the strategies for the implementation of the cloud computing in the academic institutions. Keywords...

  19. Description and earlier quality review of the Dutch educational system (primary and secondary education)

    NARCIS (Netherlands)

    Scheerens, Jaap; Scheerens, J; Luyten, H.; van Ravens, J.

    2011-01-01

    The chapter starts out with a brief overview of the structure of the Dutch education system. As compared to other national educational systems the Dutch secondary school system is strongly differentiated, featuring several separate school categories and sub-categories. Next, attention is paid to

  20. A method for designing strong S-Boxes based on chaotic Lorenz system

    Energy Technology Data Exchange (ETDEWEB)

    Ozkaynak, Fatih, E-mail: ozkaynak_fatih@hotmail.co [Tunceli University, Department of Computer Engineering, Tunceli (Turkey); Ozer, Ahmet Bedri, E-mail: bedriozer@firat.edu.t [Firat University, Department of Computer Engineering, 23119 Elazig (Turkey)

    2010-08-09

    It is important to design cryptographically strong S-Boxes in order to design secure systems. In this study, a strong, chaos-based S-Box design is proposed. Continuous-time Lorenz system is chosen as the chaotic system. Proposed methodology is analyzed and tested for the following criteria: Bijective property, nonlinearity, strict avalanche criterion, output bits independence criterion and equiprobable input/output XOR distribution. The results of the analysis show that the proposed cryptosystem is a highly reliable system suitable for secure communication.

  1. The Role of screening in the strongly correlated 2D systems

    CERN Document Server

    Hwang, E H

    2003-01-01

    We investigate recently observed experiments in the strongly correlated 2D systems (r sub s >> 1) (low-density 2D plasmons, metallic behaviour of 2D systems and frictional drag resistivity between two 2D hole layers). We compare them with our theoretical results calculated within a conventional Fermi liquid theory with RPA screening.

  2. Asymptotic definition of the periods of relaxation oscillation of strongly nonlinear systems with feedback

    OpenAIRE

    ANNAKULOVA GULSARA KUCHKAROVNA

    2016-01-01

    The problem of asymptotic approximation construction for the periods of relaxation oscillations of strongly nonlinear dynamic system with feedback is considered in the paper. Recurrent formulae to calculate with arbitrary degree of accuracy the periods of relaxation oscillations for corresponding degrees of nonlinearity of the system with feedback are derived.

  3. Strong, Weak and Branching Bisimulation for Transition Systems and Markov Reward Chains: A Unifying Matrix Approach

    Directory of Open Access Journals (Sweden)

    Nikola Trčka

    2009-12-01

    Full Text Available We first study labeled transition systems with explicit successful termination. We establish the notions of strong, weak, and branching bisimulation in terms of boolean matrix theory, introducing thus a novel and powerful algebraic apparatus. Next we consider Markov reward chains which are standardly presented in real matrix theory. By interpreting the obtained matrix conditions for bisimulations in this setting, we automatically obtain the definitions of strong, weak, and branching bisimulation for Markov reward chains. The obtained strong and weak bisimulations are shown to coincide with some existing notions, while the obtained branching bisimulation is new, but its usefulness is questionable.

  4. <strong>CyNC: A method for real time analysis of systems with cyclic data flowsstrong>

    DEFF Research Database (Denmark)

    Jessen, Jan Jacob; Schiøler, Henrik; Nielsen, Jens Frederik Dalsgaard

    2006-01-01

    The paper addresses a novel method for performance analysis of distributed realtime systems with complex, and especially cyclic data flow graphs. The presented method is based on Network Calculus principles, where flow and service constraint functions are used to bound data flows and processing...... on a relevant example. The method is implemented in a prototype tool also denoted CyNC providing a graphical user interface for model specification based on the MATLAB/SimuLink framework. Udgivelsesdato: DECEMBER...

  5. Extended Aharonov-Bohm period analysis of strongly correlated electron systems

    OpenAIRE

    Arita, Ryotaro; Kusakabe, Koichi; Kuroki, Kazuhiko; Aoki, Hideo

    1996-01-01

    The `extended Aharonov-Bohm (AB) period' recently proposed by Kusakabe and Aoki [J. Phys. Soc. Jpn (65), 2772 (1996)] is extensively studied numerically for finite size systems of strongly correlated electrons. While the extended AB period is the system length times the flux quantum for noninteracting systems, we have found the existence of the boundary across which the period is halved or another boundary into an even shorter period on the phase diagram for these models. If we compare this r...

  6. The permanent magnet systems generating strong stray fields with large localization region

    International Nuclear Information System (INIS)

    Samofalov, V.N.; Belozorov, D.P.; Ravlik, A.G.

    2008-01-01

    Three systems of permanent magnets, which produce strong magnetic stray fields (SFs) with H>B r =4πM r were studied in this work. Remarkable feature of the developed systems is localization of the strong fields in large region with linear dimension Δr comparable to characteristic magnet dimension a. The first system composed of uniformly magnetized magnets generates sufficiently homogeneous strong SFs, which amounts up to 1.5 of magnets induction B r . The second system with nonuniform magnetization is represented by cylindrical and hemispheric magnets their magnetization vector directed at every point along the radius. Such distribution of magnetization is assumed to be the consequence of magnet radial crystal texture resulting in a high uniaxial anisotropy field H K . It is shown that maximal SFs can exist on the flat surface of cylindrical magnet at the distance r from its axis and their limiting value equals to 4πM r ln(2a/r). Here, the localization region of the fields is comparable to diameter of cylindrical magnet Δr∼2R. As for the hemisphere its SFs are less than corresponding SFs for the cylinder. The third so-called quasi-nonuniform system consists of uniformly magnetized cylindrical sectors their magnetization vector is directed along the sector bisectrix. The strong SFs and their localization region are calculated in details for this case. The passage to radial magnetized cylinder is considered

  7. Carving a Strong Identity: Investigating the Life Histories of Museum Educators

    Science.gov (United States)

    Reid, Natasha S.

    2013-01-01

    This paper examines the need for more holistic, narrative-based research into the identities of museum educators. The author explores the increasing demands being placed on museum educators along with the substantial challenges experienced by these professionals amidst the changing climate of museums. Many museum educators feel that their museums'…

  8. Grenada Education Management Information System

    OpenAIRE

    Porta, Emilio; Klein, Jennifer; Arcia, Gustavo; Nannyonjo, Harriet

    2012-01-01

    The Education Management Information System (EMIS) country report for Grenada includes the following headings: background which includes education data in Grenada, EMIS staff, facilities and equipment, EMIS data, and publications; prerequisites of quality; assurances of integrity; methodological soundness; accuracy and reliability; serviceability; and accessibility.

  9. Quantum magnetism in strongly interacting one-dimensional spinor Bose systems

    DEFF Research Database (Denmark)

    Salami Dehkharghani, Amin; Volosniev, A. G.; Lindgren, E. J.

    2015-01-01

    -range inter-species interactions much larger than their intra-species interactions and show that they have novel energetic and magnetic properties. In the strongly interacting regime, these systems have energies that are fractions of the basic harmonic oscillator trap quantum and have spatially separated...

  10. Expert Systems and Special Education.

    Science.gov (United States)

    Hofmeister, Alan M.; Ferrara, Joseph M.

    1986-01-01

    The article discusses the characteristics of expert systems (computer programs designed to replicate human expertise in a variety of areas), describes recently available expert system development tools, suggests applications within the field of special education, and reviews recent efforts to apply expert systems technology to special education…

  11. The Effects of Building Strong Families: A Healthy Marriage and Relationship Skills Education Program for Unmarried Parents

    Science.gov (United States)

    Wood, Robert G.; McConnell, Sheena; Moore, Quinn; Clarkwest, Andrew; Hsueh, JoAnn

    2012-01-01

    This article examines the impacts of Building Strong Families, a healthy marriage and relationship skills education program serving unmarried parents who were expecting or had recently had a baby. Based on a random assignment research design, the analysis uses survey data from more than 4,700 couples across eight research sites to estimate program…

  12. Strongly correlated photons generated by coupling a three- or four-level system to a waveguide

    Science.gov (United States)

    Zheng, Huaixiu; Gauthier, Daniel J.; Baranger, Harold U.

    2012-04-01

    We study the generation of strongly correlated photons by coupling an atom to photonic quantum fields in a one-dimensional waveguide. Specifically, we consider a three-level or four-level system for the atom. Photon-photon bound states emerge as a manifestation of the strong photon-photon correlation mediated by the atom. Effective repulsive or attractive interaction between photons can be produced, causing either suppressed multiphoton transmission (photon blockade) or enhanced multiphoton transmission (photon-induced tunneling). As a result, nonclassical light sources can be generated on demand by sending coherent states into the proposed system. We calculate the second-order correlation function of the transmitted field and observe bunching and antibunching caused by the bound states. Furthermore, we demonstrate that the proposed system can produce photon pairs with a high degree of spectral entanglement, which have a large capacity for carrying information and are important for large-alphabet quantum communication.

  13. Globalization, the Strong State and Education Policy: The Politics of Policy in Asia

    Science.gov (United States)

    Lim, Leonel

    2016-01-01

    Much of the scholarship around the workings of education policy has focused on the global West and has taken for granted the state's limited abilities in the control of policies as both text and discourse. Drawing upon policy texts from the Singapore Ministry of Education and ethnographic data collected in a Singapore school, this paper explores…

  14. Education of teachers of elementary art educational system

    OpenAIRE

    Machander, Jan

    2012-01-01

    An elementary art educational system is deeply rooted in Czech educational and cultural tradition. The art education is widely spread, provides its students with large offer of study subjects in music, plastic art, dance and drama, all in one type of etablisment: elementary art school. Depending on student's interest that education can lead to further professional education or can provide him with art skills and development of art competencies. That educational system demands highly educated ...

  15. Disorder and pseudogap in strongly correlated systems: Phase diagram in the DMFT + Σ approach

    International Nuclear Information System (INIS)

    Kuleeva, N. A.; Kuchinskii, E. Z.

    2013-01-01

    The influence of disorder and pseudogap fluctuations on the Mott insulator-metal transition in strongly correlated systems has been studied in the framework of the generalized dynamic mean field theory (DMFT + Σ approach). Using the results of investigations of the density of states (DOS) and optical conductivity, a phase diagram (disorder-Hubbard interaction-temperature) is constructed for the paramagnetic Anderson-Hubbard model, which allows both the effects of strong electron correlations and the influence of strong disorder to be considered. Strong correlations are described using the DMFT, while a strong disorder is described using a generalized self-consistent theory of localization. The DOS and optical conductivity of the paramagnetic Hubbard model have been studied in a pseudogap state caused by antiferromagnetic spin (or charge) short-range order fluctuations with a finite correlation length, which have been modeled by a static Gaussian random field. The effect of a pseudogap on the Mott insulator-metal transition has been studied. It is established that, in both cases, the static Gaussian random field (related to the disorder or pseudogap fluctuations) leads to suppression of the Mott transition, broadening of the coexistence region of the insulator and metal phases, and an increase in the critical temperature at which the coexistence region disappears

  16. Disability and the education system.

    Science.gov (United States)

    Aron, Laudan; Loprest, Pamela

    2012-01-01

    Education is important for all children, but even more so for children with disabilities, whose social and economic opportunities may be limited. In this article, Laudan Aron and Pamela Loprest assess how well the nation's education system is serving students with disabilities. Aron and Loprest trace the evolution of the special education system in the United States from its origins in the civil rights movement of the mid-twentieth century. They note the dual character of federal legislation, which both guarantees eligible children with disabilities the right to a "free, appropriate public education in the least restrictive setting" and establishes a federal funding program to help meet this goal. They then review the types of services and accommodations these children receive from infancy through young adulthood. The special education system has given children with disabilities much greater access to public education, established an infrastructure for educating them, helped with the earlier identification of disabilities, and promoted greater inclusion of these children alongside their nondisabled peers. Despite these advances, many problems remain, including the over- and underidentification of certain subgroups of students, delays in identifying and serving students, and bureaucratic, regulatory, and financial barriers that complicate the program for everyone involved. More important, the authors show that special education students still lag behind their nondisabled peers in educational achievements, are often held to lower expectations, are less likely to take the full academic curriculum in high school, and are more likely to drop out of school. Only limited evidence is available on the effectiveness of specific special education services or on how to improve student achievement for this important subgroup of students. Improving the system will require better ways of understanding and measuring both ends of the special education continuum, namely, what

  17. Nonlinear dynamic failure process of tunnel-fault system in response to strong seismic event

    Science.gov (United States)

    Yang, Zhihua; Lan, Hengxing; Zhang, Yongshuang; Gao, Xing; Li, Langping

    2013-03-01

    Strong earthquakes and faults have significant effect on the stability capability of underground tunnel structures. This study used a 3-Dimensional Discrete Element model and the real records of ground motion in the Wenchuan earthquake to investigate the dynamic response of tunnel-fault system. The typical tunnel-fault system was composed of one planned railway tunnel and one seismically active fault. The discrete numerical model was prudentially calibrated by means of the comparison between the field survey and numerical results of ground motion. It was then used to examine the detailed quantitative information on the dynamic response characteristics of tunnel-fault system, including stress distribution, strain, vibration velocity and tunnel failure process. The intensive tunnel-fault interaction during seismic loading induces the dramatic stress redistribution and stress concentration in the intersection of tunnel and fault. The tunnel-fault system behavior is characterized by the complicated nonlinear dynamic failure process in response to a real strong seismic event. It can be qualitatively divided into 5 main stages in terms of its stress, strain and rupturing behaviors: (1) strain localization, (2) rupture initiation, (3) rupture acceleration, (4) spontaneous rupture growth and (5) stabilization. This study provides the insight into the further stability estimation of underground tunnel structures under the combined effect of strong earthquakes and faults.

  18. The System of Checks and Balances in General Education Management

    Science.gov (United States)

    Kravtsov, Sergei

    2015-01-01

    The project of modernization of regional education systems is now in its second year, but by no means all schools in Russia currently meet modern requirements. The division between strong and weak schools is still preserved. Quality control is frequently regarded as a formality and the effectiveness of how a specific educational institution is run…

  19. Expert Systems and Special Education.

    Science.gov (United States)

    Hofmeister, Alan M.; Ferrara, Joseph M.

    The application of artificial intelligence to the problems of education is examined. One of the most promising areas in artificial intelligence is expert systems technology which engages the user in a problem-solving diaglogue. Some of the characteristics that make expert systems "intelligent" are identified and exemplified. The rise of…

  20. An exponentially increasing spectral form factor K(τ) for a class of strongly chaotic systems

    International Nuclear Information System (INIS)

    Aurich, R.; Sieber, M.

    1992-11-01

    The spectral form factor K(τ) plays a crucial role in the understanding of the statistical properties of quantal energy spectra of strongly chaotic systems in terms of periodic orbits. It allows the computation of those statistics that are bilinear in the spectral density d(E) like the spectral rigidity Δ 3 (L) and the number variance Σ 2 (L). Since Berry's work on the spectral rigidity in terms of periodic orbits, it is generally assumed that the periodic-orbit expression for the spectral form factor universally obeys KCτ) = 1 for τ ≥ 1. Here we show that for a wide class of strongly chaotic systems, including all billiards with Neumann boundary conditions, the semiclassical spectral form factor K(τ) behaves asymptotically as K(τ ∝ e et where c > 0 depends only on the energy E at which the static is considered. (orig.)

  1. Les Houches Summer School : Strongly Interacting Quantum Systems out of Equilibrium

    CERN Document Server

    Millis, Andrew J; Parcollet, Olivier; Saleur, Hubert; Cugliandolo, Leticia F

    2016-01-01

    Over the last decade new experimental tools and theoretical concepts are providing new insights into collective nonequilibrium behavior of quantum systems. The exquisite control provided by laser trapping and cooling techniques allows us to observe the behavior of condensed bose and degenerate Fermi gases under nonequilibrium drive or after quenches' in which a Hamiltonian parameter is suddenly or slowly changed. On the solid state front, high intensity short-time pulses and fast (femtosecond) probes allow solids to be put into highly excited states and probed before relaxation and dissipation occur. Experimental developments are matched by progress in theoretical techniques ranging from exact solutions of strongly interacting nonequilibrium models to new approaches to nonequilibrium numerics. The summer school Strongly interacting quantum systems out of equilibrium' held at the Les Houches School of Physics as its XCIX session was designed to summarize this progress, lay out the open questions and define dir...

  2. Research of Smart Payment System of Power Grid Using Strongly Sub-feasible SQP Algorithm

    Directory of Open Access Journals (Sweden)

    Yang Fang

    2017-01-01

    Full Text Available With the continuous development and perfection of “Internet + Electricity”, the regional grid operation has gradually realized the Internet-based automation. In order to improve the smart level of regional grid operation, this paper analyzes the status quo of power grid terminal in Fujian local power (group company, and introduces the strongly sub-feasible sequence quadratic programming (SQP. The smart payment system based on strongly sub-feasible SQP algorithm is described by its structure, function and implementation process. Through the information technology to improve the efficiency of the service, so that payment staff and smart terminal of self-service payment system has been information between the interactive mode, the actual operation effect is good.

  3. Local strong solutions to the stochastic compressible Navier-Stokes system

    Czech Academy of Sciences Publication Activity Database

    Breit, D.; Feireisl, Eduard; Hofmanová, M.

    2018-01-01

    Roč. 43, č. 2 (2018), s. 313-345 ISSN 0360-5302 EU Projects: European Commission(XE) 320078 - MATHEF Institutional support: RVO:67985840 Keywords : compressible fluids * local strong solution s * Navier-Stokes system Subject RIV: BA - General Mathematics OBOR OECD: Pure mathematics Impact factor: 1.608, year: 2016 https://www.tandfonline.com/doi/full/10.1080/03605302.2018.1442476

  4. Quantum Glassiness in Strongly Correlated Clean Systems: An Example of Topological Overprotection

    Science.gov (United States)

    Chamon, Claudio

    2005-01-01

    This Letter presents solvable examples of quantum many-body Hamiltonians of systems that are unable to reach their ground states as the environment temperature is lowered to absolute zero. These examples, three-dimensional generalizations of quantum Hamiltonians proposed for topological quantum computing, (1)have no quenched disorder, (2)have solely local interactions, (3)have an exactly solvable spectrum, (4)have topologically ordered ground states, and (5)have slow dynamical relaxation rates akin to those of strong structural glasses.

  5. Local strong solutions to the stochastic compressible Navier-Stokes system

    Czech Academy of Sciences Publication Activity Database

    Breit, D.; Feireisl, Eduard; Hofmanová, M.

    2018-01-01

    Roč. 43, č. 2 (2018), s. 313-345 ISSN 0360-5302 EU Projects: European Commission(XE) 320078 - MATHEF Institutional support: RVO:67985840 Keywords : compressible fluids * local strong solutions * Navier-Stokes system Subject RIV: BA - General Mathematics OBOR OECD: Pure mathematics Impact factor: 1.608, year: 2016 https://www.tandfonline.com/doi/full/10.1080/03605302.2018.1442476

  6. Coalitions and Competition in Malaysia – Incremental Transformation of a Strong-party System

    OpenAIRE

    Meredith L. WEISS

    2013-01-01

    "The seeming entrenchment of a two-coalition system in Malaysia solidifies the centrality of strongly institutionalised parties in the polity. The primary parties in Malaysia reach deeply into society and nest within dense networks of both intra-party and external organisations. Given this order - which differentiates Malaysia from its neighbours in the region - political liberalisation, if it happens, should be expected largely via electoral politics, and, specifically, through inter-party c...

  7. Simulation of Quantum Many-Body Dynamics for Generic Strongly-Interacting Systems

    Science.gov (United States)

    Meyer, Gregory; Machado, Francisco; Yao, Norman

    2017-04-01

    Recent experimental advances have enabled the bottom-up assembly of complex, strongly interacting quantum many-body systems from individual atoms, ions, molecules and photons. These advances open the door to studying dynamics in isolated quantum systems as well as the possibility of realizing novel out-of-equilibrium phases of matter. Numerical studies provide insight into these systems; however, computational time and memory usage limit common numerical methods such as exact diagonalization to relatively small Hilbert spaces of dimension 215 . Here we present progress toward a new software package for dynamical time evolution of large generic quantum systems on massively parallel computing architectures. By projecting large sparse Hamiltonians into a much smaller Krylov subspace, we are able to compute the evolution of strongly interacting systems with Hilbert space dimension nearing 230. We discuss and benchmark different design implementations, such as matrix-free methods and GPU based calculations, using both pre-thermal time crystals and the Sachdev-Ye-Kitaev model as examples. We also include a simple symbolic language to describe generic Hamiltonians, allowing simulation of diverse quantum systems without any modification of the underlying C and Fortran code.

  8. Non trivial effect of strong high-frequency excitation on a nonlinear controlled system

    DEFF Research Database (Denmark)

    Fidlin, A.; Thomsen, Jon Juel

    2004-01-01

    due to control is usually high compared to uncontrolled systems. A standard optimal controller for a standard nonlinear system (a movable cart used to balance a pendulum vertically) is shown to exhibit pronounced bias error in presence of HF-excitation. The bias increases with increased excitation......Nontrivial effects of high-frequency excitation on mechanical uncontrolled systems have been investigated intensively in the last decade. Some of these effects are usually used in controlled systems in form of dither to smoothen out undesired friction and hysteresis. However the level of damping...... intensity, but it also increases with the increased control power. Analytic prediction for the bias shows, the interaction between fast excitation and strong damping terms in the control system to be the cause of the permanent control error. A "slow observer" ignoring fast motions is shown...

  9. Performances of Free-Space Optical Communication System Over Strong Turbulence

    Directory of Open Access Journals (Sweden)

    Ucuk Darusalam

    2014-08-01

    Full Text Available We report an experimental of free-space optical communication (FSOC system that use tube propagation simulator (TPS as the turbulence medium. The FSOC system usewavelength of 1550 nm at the rate transmission of 1000 Mbps and amplified with EDFA at the output of +23 dBm. Index structure of 10-15–10-13 as the representation of atmosphere index turbulences are used for simulation of intensity distribution model or scintillation. The simulation use gammagamma and K model as well. The beam wave propagation models used in simulation are plane wave, spherical wave and Gaussian wave. Spherical wave achieves highest performance via gamma-gamma in strong turbulence. While Gaussian wave achieves highest performance also via K model. We also found, characteristical FSOC system performance is calculated more accurately with gamma-gamma method for strong turbulence than K model. The performances from gamma-gamma for strong turbulenceare at 22.55 dB, at 5.33×10-4, and at 9.41 ×10-6. 

  10. Adult education in the continuous education system

    OpenAIRE

    Verbitsky Andrey Aleksandrovich

    2015-01-01

    The article reveals problems of adults’ education as a part of lifelong learning. The article formulates the mission of continuing education, its values, purposes, contents, and principles and terms of organizing the educational process.

  11. Strong Vocational Education--A Safe Way to the Labour Market? A Case Study of the Czech Republic

    Science.gov (United States)

    Straková, Jana

    2015-01-01

    Background: In its communications, the European Commission stresses the importance of vocational education and endorses apprenticeship training. Educational systems that have dual tracks of academic alongside vocational learning routes have been shown to generate better labour market outcomes for school leavers and smooth the school-to-work…

  12. Impact of On-line Education on Higher Education System

    OpenAIRE

    Sreeramana Aithal; Shubhrajyotsna Aithal

    2016-01-01

    Education is the most important thing for any country to develop and prosper. Education moulds the character and intelligence of individuals. It also provides the talent and motivation to every person. The conventional education system at higher education level is analogous to brick and mortar type business system, where a student gets systematic education from college/University by personally attending required courses regularly (Full time/part Time). However, the conventional education syst...

  13. Impact of On-line Education on Higher Education System

    OpenAIRE

    Aithal P. S.; Shubhrajyotsna Aithal

    2016-01-01

    Education is the most important thing for any country to develop and prosper. Education moulds the character and intelligence of individuals. It also provides the talent and motivation to every person. The conventional education system at higher education level is analogous to brick and mortar type business system, where a student gets a systematic education from college/University by personally attending required courses regularly (Full time/part Time). However, the conventional education sy...

  14. Strong generalized synchronization with a particular relationship R between the coupled systems

    Science.gov (United States)

    Grácio, Clara; Fernandes, Sara; Mário Lopes, Luís

    2018-03-01

    The question of the chaotic synchronization of two coupled dynamical systems is an issue that interests researchers in many fields, from biology to psychology, through economics, chemistry, physics, and many others. The different forms of couplings and the different types of synchronization, give rise to many problems, most of them little studied. In this paper we deal with general couplings of two dynamical systems and we study strong generalized synchronization with a particular relationship R between them. Our results include the definition of a window in the domain of the coupling strength, where there is an exponentially stable solution, and the explicit determination of this window. In the case of unidirectional or symmetric couplings, this window is presented in terms of the maximum Lyapunov exponent of the systems. Examples of applications to chaotic systems of dimension one and two are presented.

  15. Strongly Asymmetric Spectroscopy in Plasmon-Exciton Hybrid Systems due to Interference-Induced Energy Repartitioning

    Science.gov (United States)

    Ding, Si-Jing; Li, Xiaoguang; Nan, Fan; Zhong, Yu-Ting; Zhou, Li; Xiao, Xudong; Wang, Qu-Quan; Zhang, Zhenyu

    2017-10-01

    Recent intense effort has been devoted to exploring different manifestations of resonant excitations of strongly coupled plasmons and excitons, but so far such studies have been limited to situations where the Fano- or Rabi-type spectra are largely symmetric at zero detuning. Using a newly developed full quantum mechanical model, here we reveal the existence of a highly asymmetric spectroscopic regime for both the Rabi splitting and transparency dip. The asymmetric nature is inherently tied to the non-negligible exciton absorbance and is caused by substantial interference-induced energy repartitioning of the resonance peaks. This theoretical framework can be exploited to reveal the quantum behaviors of the two excitation entities with varying mutual coupling strengths in both linear and nonlinear regimes. We also use prototypical systems of rhodamine molecules strongly coupled with AuAg alloyed nanoparticles and well-devised control experiments to demonstrate the validity and tunability of the energy repartitioning and correlated electronic state occupations, as captured by the variations in the asymmetric spectroscopy and corresponding nonlinear absorption coefficient as a function of the Au:Ag ratio. The present study helps to substantially enrich our microscopic understanding of strongly coupled plasmon-exciton systems.

  16. The educational system in Japan

    Science.gov (United States)

    Spearman, M. L.

    1986-01-01

    The rapid economic growth of Japan since World War II has resulted in Japan becoming a reference point for developing nations and the West. This remarkable growth results from a combination of factors, one of which has been unyielding attention to education in order to cultivate the human talent necessary to provide the productivity for economic growth. The Japanese education system emphasizes quality of instruction and rewards hard work. Some of the principles of the system are outlined together with a summary of the content of the curriculum, the quantity and quality of instruction, and the influence of culture and environment.

  17. An economical educational seismic system

    Science.gov (United States)

    Lehman, J. D.

    1980-01-01

    There is a considerable interest in seismology from the nonprofessional or amateur standpoint. The operation of a seismic system can be satisfying and educational, especially when you have built and operated the system yourself. A long-period indoor-type sensor and recording system that works extremely well has been developed in the James Madison University Physics Deparment. The system can be built quite economically, and any educational institution that cannot commit themselves to a professional installation need not be without first-hand seismic information. The system design approach has been selected by college students working a project or senior thesis, several elementary and secondary science teachers, as well as the more ambitious tinkerer or hobbyist at home 

  18. Strong genetic influence on a UK nationwide test of educational achievement at the end of compulsory education at age 16.

    Science.gov (United States)

    Shakeshaft, Nicholas G; Trzaskowski, Maciej; McMillan, Andrew; Rimfeld, Kaili; Krapohl, Eva; Haworth, Claire M A; Dale, Philip S; Plomin, Robert

    2013-01-01

    We have previously shown that individual differences in educational achievement are highly heritable in the early and middle school years in the UK. The objective of the present study was to investigate whether similarly high heritability is found at the end of compulsory education (age 16) for the UK-wide examination, called the General Certificate of Secondary Education (GCSE). In a national twin sample of 11,117 16-year-olds, heritability was substantial for overall GCSE performance for compulsory core subjects (58%) as well as for each of them individually: English (52%), mathematics (55%) and science (58%). In contrast, the overall effects of shared environment, which includes all family and school influences shared by members of twin pairs growing up in the same family and attending the same school, accounts for about 36% of the variance of mean GCSE scores. The significance of these findings is that individual differences in educational achievement at the end of compulsory education are not primarily an index of the quality of teachers or schools: much more of the variance of GCSE scores can be attributed to genetics than to school or family environment. We suggest a model of education that recognizes the important role of genetics. Rather than a passive model of schooling as instruction (instruere, 'to build in'), we propose an active model of education (educare, 'to bring out') in which children create their own educational experiences in part on the basis of their genetic propensities, which supports the trend towards personalized learning.

  19. Multiscale KF Algorithm for Strong Fractional Noise Interference Suppression in Discrete-Time UWB Systems

    Directory of Open Access Journals (Sweden)

    Liyun Su

    2011-01-01

    Full Text Available In order to suppress the interference of the strong fractional noise signal in discrete-time ultrawideband (UWB systems, this paper presents a new UWB multi-scale Kalman filter (KF algorithm for the interference suppression. This approach solves the problem of the narrowband interference (NBI as nonstationary fractional signal in UWB communication, which does not need to estimate any channel parameter. In this paper, the received sampled signal is transformed through multiscale wavelet to obtain a state transition equation and an observation equation based on the stationarity theory of wavelet coefficients in time domain. Then through the Kalman filter method, fractional signal of arbitrary scale is easily figured out. Finally, fractional noise interference is subtracted from the received signal. Performance analysis and computer simulations reveal that this algorithm is effective to reduce the strong fractional noise when the sampling rate is low.

  20. Ensemble DFT Approach to Excited States of Strongly Correlated Molecular Systems.

    Science.gov (United States)

    Filatov, Michael

    2016-01-01

    Ensemble density functional theory (DFT) is a novel time-independent formalism for obtaining excitation energies of many-body fermionic systems. A considerable advantage of ensemble DFT over the more common Kohn-Sham (KS) DFT and time-dependent DFT formalisms is that it enables one to account for strong non-dynamic electron correlation in the ground and excited states of molecular systems in a transparent and accurate fashion. Despite its positive aspects, ensemble DFT has not so far found its way into the repertoire of methods of modern computational chemistry, probably because of the perceived lack of practically affordable implementations of the theory. The spin-restricted ensemble-referenced KS (REKS) method is perhaps the first computationally feasible implementation of the ideas behind ensemble DFT which enables one to describe accurately electronic transitions in a wide class of molecular systems, including strongly correlated molecules (biradicals, molecules undergoing bond breaking/formation), extended π-conjugated systems, donor-acceptor charge transfer adducts, etc.

  1. Semiclassical quantization of integrable systems of few interacting anyons in a strong magnetic field

    International Nuclear Information System (INIS)

    Sivan, N.; Levit, S.

    1992-01-01

    We present a semiclassical theory of charged interacting anyons in a strong magnetic field. We derive the appropriate generalization of the WKB quantization conditions and determine the corresponding wave functions for non separable integrable anyonic systems. This theory is applies to a system of two interacting anyons, two interacting anyons in the presence of an impurity and three interacting anyons. We calculate the dependence of the semiclassical energy levels on the statistical parameter and find regions in which dependence follows very different patterns. The semiclassical treatment allows to find the correlation between these patterns and the change in the character of the classical motion of the system. We also test the accuracy of the mean field approximation for low and high energy states of the three anyons. (author)

  2. Quantum glassiness in clean strongly correlated systems: an example of topological overprotection

    Science.gov (United States)

    Chamon, Claudio

    2005-03-01

    Describing matter at near absolute zero temperature requires understanding a system's quantum ground state and the low energy excitations around it, the quasiparticles, which are thermally populated by the system's contact to a heat bath. However, this paradigm breaks down if thermal equilibration is obstructed. I present solvable examples of quantum many-body Hamiltonians of systems that are unable to reach their ground states as the environment temperature is lowered to absolute zero. These examples, three dimensional generalizations of quantum Hamiltonians proposed for topological quantum computing, 1) have no quenched disorder, 2) have solely local interactions, 3) have an exactly solvable spectrum, 4) have topologically ordered ground states, and 5) have slow dynamical relaxation rates akin to those of strong structural glasses.

  3. The ALPS project release 2.0: open source software for strongly correlated systems

    International Nuclear Information System (INIS)

    Bauer, B; Gamper, L; Gukelberger, J; Hehn, A; Isakov, S V; Ma, P N; Mates, P; Carr, L D; Evertz, H G; Feiguin, A; Freire, J; Koop, D; Fuchs, S; Gull, E; Guertler, S; Igarashi, R; Matsuo, H; Parcollet, O; Pawłowski, G; Picon, J D

    2011-01-01

    We present release 2.0 of the ALPS (Algorithms and Libraries for Physics Simulations) project, an open source software project to develop libraries and application programs for the simulation of strongly correlated quantum lattice models such as quantum magnets, lattice bosons, and strongly correlated fermion systems. The code development is centered on common XML and HDF5 data formats, libraries to simplify and speed up code development, common evaluation and plotting tools, and simulation programs. The programs enable non-experts to start carrying out serial or parallel numerical simulations by providing basic implementations of the important algorithms for quantum lattice models: classical and quantum Monte Carlo (QMC) using non-local updates, extended ensemble simulations, exact and full diagonalization (ED), the density matrix renormalization group (DMRG) both in a static version and a dynamic time-evolving block decimation (TEBD) code, and quantum Monte Carlo solvers for dynamical mean field theory (DMFT). The ALPS libraries provide a powerful framework for programmers to develop their own applications, which, for instance, greatly simplify the steps of porting a serial code onto a parallel, distributed memory machine. Major changes in release 2.0 include the use of HDF5 for binary data, evaluation tools in Python, support for the Windows operating system, the use of CMake as build system and binary installation packages for Mac OS X and Windows, and integration with the VisTrails workflow provenance tool. The software is available from our web server at http://alps.comp-phys.org/

  4. A new approach to tracer transport analysis: From fracture systems to strongly heterogeneous porous media

    International Nuclear Information System (INIS)

    Tsang, Chin-Fu.

    1989-02-01

    Many current development and utilization of groundwater resources include a study of their flow and transport properties. These properties are needed in evaluating possible changes in groundwater quality and potential transport of hazardous solutes through the groundwater system. Investigation of transport properties of fractured rocks is an active area of research. Most of the current approaches to the study of flow and transport in fractured rocks cannot be easily used for analysis of tracer transport field data. A new approach is proposed based on a detailed study of transport through a fracture of variable aperture. This is a two-dimensional strongly heterogeneous permeable system. It is suggested that tracer breakthrough curves can be analyzed based on an aperture or permeability probability distribution function that characterizes the tracer flow through the fracture. The results are extended to a multi-fracture system and can be equally applied to a strongly heterogeneous porous medium. Finally, the need for multi-point or line and areal tracer injection and observation tests is indicated as a way to avoid the sensitive dependence of point measurements on local permeability variability. 30 refs., 15 figs

  5. The parallel adult education system

    DEFF Research Database (Denmark)

    Wahlgren, Bjarne

    2015-01-01

    for competence development. The Danish university educational system includes two parallel programs: a traditional academic track (candidatus) and an alternative practice-based track (master). The practice-based program was established in 2001 and organized as part time. The total program takes half the time...

  6. Review of Indian education system

    DEFF Research Database (Denmark)

    Shinde, Dnyandeo Dattatray; Falch, Morten; Tated, Rajendra G

    2015-01-01

    In today's world of globalization, Indian education system is to be upgraded. The paper focus on the recent literature available related to teaching learning approach. The attempt is to analysis the admission condition in technical institutes due to growth in intake of seats. The fish bone diagra...

  7. A k-Bounded Symbolic Execution for Checking Strong Heap Properties of Open Systems

    DEFF Research Database (Denmark)

    Lee, Jooyong; Deng, Xianghua; Bogor, Robby

    2006-01-01

    This paper presents Kiasan, a bounded technique to reason about open systems based on a path sensitive, relatively sound and complete symbolic execution instead of the usual compositional reasoning through weakest precondition calculation that summarizes all execution paths. Kiasan is able to check...... strong heap properties, and it is fully automatic and flexible in terms of its cost and the guarantees it provides. It allows a user-adjustable mixed compositional/non-compositional reasoning and naturally produces error traces as fault evidence. We implemented Kiasan using the Bogor model checking...

  8. Microscopic origin of marginal Fermi-liquid in strongly correlated spin systems

    International Nuclear Information System (INIS)

    Protogenov, A.P.; Ryndyk, D.A.

    1992-08-01

    We consider the consequences of separation of spin and charge degrees of freedom in 2+1D strongly correlated spin systems. Self-consistent spin and charge motions induced by doping in sites of ground and dual lattices form such a spectrum of quasiparticles which together with the dispersionless character of the collective excitation spectrum and the chemical potential pinning in the band centre yield the necessary behavior of charge and spin polarizability to support the theory of marginal liquid formulated by C.M. Varma et al. (Phys. Rev. Lett. 63, 1996 (1989)). (author). 28 refs, 4 figs

  9. Entanglement-enhanced information transfer through strongly correlated systems and its application to optical lattices

    Energy Technology Data Exchange (ETDEWEB)

    Yang Song [Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom); Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026 (China); Bayat, Abolfazl; Bose, Sougato [Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom)

    2011-08-15

    We show that the inherent entanglement of the ground state of strongly correlated systems can be exploited for both classical and quantum communications. Our strategy is based on a single-qubit rotation that encodes information in the entangled nature of the ground state. In classical communication, our mechanism conveys more than one bit of information in each shot, just as dense coding does, without demanding long-range entanglement. In our scheme for quantum communication, the quality is higher than the widely studied attaching scenarios. Moreover, we propose to implement this way of communication in optical lattices.

  10. Magnetic and resonant X-ray scattering investigations of strongly correlated electron systems

    International Nuclear Information System (INIS)

    Paolasini, L.; Bergevin, F. de

    2008-01-01

    Resonant X-ray scattering is a method which combines high-Q resolution X-ray elastic diffraction and atomic core-hole spectroscopy for investigating electronic and magnetic long-range ordered structures in condensed matter. During recent years the development of theoretical models to describe resonant X-ray scattering amplitudes and the evolution of experimental techniques, which include the control and analysis of linear photon polarization and the introduction of extreme environment conditions such as low temperatures, high magnetic field and high pressures, have opened a new field of investigation in the domain of strongly correlated electron systems. (authors)

  11. Strongly increasing solutions of cyclic systems of second order differential equations with power-type nonlinearities

    Directory of Open Access Journals (Sweden)

    Jaroslav Jaroš

    2015-01-01

    Full Text Available We consider \\(n\\-dimensional cyclic systems of second order differential equations \\[(p_i(t|x_{i}'|^{\\alpha_i -1}x_{i}'' = q_{i}(t|x_{i+1}|^{\\beta_i-1}x_{i+1},\\] \\[\\quad i = 1,\\ldots,n, \\quad (x_{n+1} = x_1 \\tag{\\(\\ast\\}\\] under the assumption that the positive constants \\(\\alpha_i\\ and \\(\\beta_i\\ satisfy \\(\\alpha_1{\\ldots}\\alpha_n \\gt \\beta_1{\\ldots}\\beta_n\\ and \\(p_i(t\\ and \\(q_i(t\\ are regularly varying functions, and analyze positive strongly increasing solutions of system (\\(\\ast\\ in the framework of regular variation. We show that the situation for the existence of regularly varying solutions of positive indices for (\\(\\ast\\ can be characterized completely, and moreover that the asymptotic behavior of such solutions is governed by the unique formula describing their order of growth precisely. We give examples demonstrating that the main results for (\\(\\ast\\ can be applied to some classes of partial differential equations with radial symmetry to acquire accurate information about the existence and the asymptotic behavior of their radial positive strongly increasing solutions.

  12. Theoretical development and first-principles analysis of strongly correlated systems

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Chen [Iowa State Univ., Ames, IA (United States)

    2016-12-17

    A variety of quantum many-body methods have been developed for studying the strongly correlated electron systems. We have also proposed a computationally efficient and accurate approach, named the correlation matrix renormalization (CMR) method, to address the challenges. The initial implementation of the CMR method is designed for molecules which have theoretical advantages, including small size of system, manifest mechanism and strongly correlation effect such as bond breaking process. The theoretic development and benchmark tests of the CMR method are included in this thesis. Meanwhile, ground state total energy is the most important property of electronic calculations. We also investigated an alternative approach to calculate the total energy, and extended this method for magnetic anisotropy energy (MAE) of ferromagnetic materials. In addition, another theoretical tool, dynamical mean- field theory (DMFT) on top of the DFT , has also been used in electronic structure calculations for an Iridium oxide to study the phase transition, which results from an interplay of the d electrons' internal degrees of freedom.

  13. Quantum physics of light and matter photons, atoms, and strongly correlated systems

    CERN Document Server

    Salasnich, Luca

    2017-01-01

    This compact but exhaustive textbook, now in its significantly revised and expanded second edition, provides an essential introduction to the field quantization of light and matter with applications to atomic physics and strongly correlated systems. Following an initial review of the origins of special relativity and quantum mechanics, individual chapters are devoted to the second quantization of the electromagnetic field and the consequences of light field quantization for the description of electromagnetic transitions. The spin of the electron is then analyzed, with particular attention to its derivation from the Dirac equation. Subsequent topics include the effects of external electric and magnetic fields on the atomic spectra and the properties of systems composed of many interacting identical particles. The book also provides a detailed explanation of the second quantization of the non-relativistic matter field, i.e., the Schrödinger field, which offers a powerful tool for the investigation of many-body...

  14. Phase transitions, nonequilibrium dynamics, and critical behavior of strongly interacting systems

    Energy Technology Data Exchange (ETDEWEB)

    Mottola, E.; Bhattacharya, T.; Cooper, F. [and others

    1998-12-31

    This is the final report of a three-year, Laboratory Directed Research and Development project at Los Alamos National Laboratory. In this effort, large-scale simulations of strongly interacting systems were performed and a variety of approaches to the nonequilibrium dynamics of phase transitions and critical behavior were investigated. Focus areas included (1) the finite-temperature quantum chromodynamics phase transition and nonequilibrium dynamics of a new phase of matter (the quark-gluon plasma) above the critical temperature, (2) nonequilibrium dynamics of a quantum fields using mean field theory, and (3) stochastic classical field theoretic models with applications to spinodal decomposition and structural phase transitions in a variety of systems, such as spin chains and shape memory alloys.

  15. Strongly correlated Fermi-systems: Non-Fermi liquid behavior, quasiparticle effective mass and their interplay

    Energy Technology Data Exchange (ETDEWEB)

    Shaginyan, V.R. [Petersburg Nuclear Physics Institute, RAS, Gatchina 188300 (Russian Federation); Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel)], E-mail: vrshag@thd.pnpi.spb.ru; Amusia, M.Ya. [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Popov, K.G. [Komi Science Center, Ural Division, RAS, Syktyvkar 167982 (Russian Federation)

    2009-06-15

    Basing on the density functional theory of fermion condensation, we analyze the non-Fermi liquid behavior of strongly correlated Fermi-systems such as heavy-fermion metals. When deriving equations for the effective mass of quasiparticles, we consider solids with a lattice and homogeneous systems. We show that the low-temperature thermodynamic and transport properties are formed by quasiparticles, while the dependence of the effective mass on temperature, number density, magnetic fields, etc., gives rise to the non-Fermi liquid behavior. Our theoretical study of the heat capacity, magnetization, energy scales, the longitudinal magnetoresistance and magnetic entropy are in good agreement with the remarkable recent facts collected on the heavy-fermion metal YbRh{sub 2}Si{sub 2}.

  16. Strongly correlated Fermi-systems: Non-Fermi liquid behavior, quasiparticle effective mass and their interplay

    International Nuclear Information System (INIS)

    Shaginyan, V.R.; Amusia, M.Ya.; Popov, K.G.

    2009-01-01

    Basing on the density functional theory of fermion condensation, we analyze the non-Fermi liquid behavior of strongly correlated Fermi-systems such as heavy-fermion metals. When deriving equations for the effective mass of quasiparticles, we consider solids with a lattice and homogeneous systems. We show that the low-temperature thermodynamic and transport properties are formed by quasiparticles, while the dependence of the effective mass on temperature, number density, magnetic fields, etc., gives rise to the non-Fermi liquid behavior. Our theoretical study of the heat capacity, magnetization, energy scales, the longitudinal magnetoresistance and magnetic entropy are in good agreement with the remarkable recent facts collected on the heavy-fermion metal YbRh 2 Si 2 .

  17. Education for Leisure and the Political System

    Science.gov (United States)

    Ibrahim, Hilmi

    1976-01-01

    The author considers the place of education for leisure in primitive political systems, traditional political systems, and modern political systems (including premobilized and mobilized dictatorships and democracies). (GW)

  18. Lasing by driven atoms-cavity system in collective strong coupling regime.

    Science.gov (United States)

    Sawant, Rahul; Rangwala, S A

    2017-09-12

    The interaction of laser cooled atoms with resonant light is determined by the natural linewidth of the excited state. An optical cavity is another optically resonant system where the loss from the cavity determines the resonant optical response of the system. The near resonant combination of an optical Fabry-Pérot cavity with laser cooled and trapped atoms couples two distinct optical resonators via light and has great potential for precision measurements and the creation of versatile quantum optics systems. Here we show how driven magneto-optically trapped atoms in collective strong coupling regime with the cavity leads to lasing at a frequency red detuned from the atomic transition. Lasing is demonstrated experimentally by the observation of a lasing threshold accompanied by polarization and spatial mode purity, and line-narrowing in the outcoupled light. Spontaneous emission into the cavity mode by the driven atoms stimulates lasing action, which is capable of operating as a continuous wave laser in steady state, without a seed laser. The system is modeled theoretically, and qualitative agreement with experimentally observed lasing is seen. Our result opens up a range of new measurement possibilities with this system.

  19. Early Childhood Education: Building a Strong Foundation for the Future. AFT Educational Issues Policy Brief Number 15

    Science.gov (United States)

    American Federation of Teachers, 2002

    2002-01-01

    This policy brief provides the context and the research supporting the American Federation of Teacher's call for universal early childhood education. It focuses on the current challenges the nation faces in achieving such a program; and it includes the signs of progress, a description of what other industrialized countries are doing, the features…

  20. Multiconfiguration Pair-Density Functional Theory: A New Way To Treat Strongly Correlated Systems.

    Science.gov (United States)

    Gagliardi, Laura; Truhlar, Donald G; Li Manni, Giovanni; Carlson, Rebecca K; Hoyer, Chad E; Bao, Junwei Lucas

    2017-01-17

    The electronic energy of a system provides the Born-Oppenheimer potential energy for internuclear motion and thus determines molecular structure and spectra, bond energies, conformational energies, reaction barrier heights, and vibrational frequencies. The development of more efficient and more accurate ways to calculate the electronic energy of systems with inherently multiconfigurational electronic structure is essential for many applications, including transition metal and actinide chemistry, systems with partially broken bonds, many transition states, and most electronically excited states. Inherently multiconfigurational systems are called strongly correlated systems or multireference systems, where the latter name refers to the need for using more than one ("multiple") configuration state function to provide a good zero-order reference wave function. This Account describes multiconfiguration pair-density functional theory (MC-PDFT), which was developed as a way to combine the advantages of wave function theory (WFT) and density functional theory (DFT) to provide a better treatment of strongly correlated systems. First we review background material: the widely used Kohn-Sham DFT (which uses only a single Slater determinant as reference wave function), multiconfiguration WFT methods that treat inherently multiconfigurational systems based on an active space, and previous attempts to combine multiconfiguration WFT with DFT. Then we review the formulation of MC-PDFT. It is a generalization of Kohn-Sham DFT in that the electron kinetic energy and classical electrostatic energy are calculated from a reference wave function, while the rest of the energy is obtained from a density functional. However, there are two main differences with respent to Kohn-Sham DFT: (i) The reference wave function is multiconfigurational rather than being a single Slater determinant. (ii) The density functional is a function of the total density and the on-top pair density rather than

  1. Development of an Earthquake Early Warning System Using Real-Time Strong Motion Signals.

    Science.gov (United States)

    Wu, Yih-Min; Kanamori, Hiroo

    2008-01-09

    As urbanization progresses worldwide, earthquakes pose serious threat to livesand properties for urban areas near major active faults on land or subduction zonesoffshore. Earthquake Early Warning (EEW) can be a useful tool for reducing earthquakehazards, if the spatial relation between cities and earthquake sources is favorable for suchwarning and their citizens are properly trained to respond to earthquake warning messages.An EEW system forewarns an urban area of forthcoming strong shaking, normally with afew sec to a few tens of sec of warning time, i.e., before the arrival of the destructive Swavepart of the strong ground motion. Even a few second of advanced warning time willbe useful for pre-programmed emergency measures for various critical facilities, such asrapid-transit vehicles and high-speed trains to avoid potential derailment; it will be alsouseful for orderly shutoff of gas pipelines to minimize fire hazards, controlled shutdown ofhigh-technological manufacturing operations to reduce potential losses, and safe-guardingof computer facilities to avoid loss of vital databases. We explored a practical approach toEEW with the use of a ground-motion period parameter τc and a high-pass filtered verticaldisplacement amplitude parameter Pd from the initial 3 sec of the P waveforms. At a givensite, an earthquake magnitude could be determined from τ c and the peak ground-motionvelocity (PGV) could be estimated from Pd. In this method, incoming strong motion acceleration signals are recursively converted to ground velocity and displacement. A Pwavetrigger is constantly monitored. When a trigger occurs, τ c and Pd are computed. Theearthquake magnitude and the on-site ground-motion intensity could be estimated and thewarning could be issued. In an ideal situation, such warnings would be available within 10sec of the origin time of a large earthquake whose subsequent ground motion may last fortens of seconds.

  2. Development of an Earthquake Early Warning System Using Real-Time Strong Motion Signals

    Directory of Open Access Journals (Sweden)

    Hiroo Kanamori

    2008-01-01

    Full Text Available As urbanization progresses worldwide, earthquakes pose serious threat to livesand properties for urban areas near major active faults on land or subduction zonesoffshore. Earthquake Early Warning (EEW can be a useful tool for reducing earthquakehazards, if the spatial relation between cities and earthquake sources is favorable for suchwarning and their citizens are properly trained to respond to earthquake warning messages.An EEW system forewarns an urban area of forthcoming strong shaking, normally with afew sec to a few tens of sec of warning time, i.e., before the arrival of the destructive Swavepart of the strong ground motion. Even a few second of advanced warning time willbe useful for pre-programmed emergency measures for various critical facilities, such asrapid-transit vehicles and high-speed trains to avoid potential derailment; it will be alsouseful for orderly shutoff of gas pipelines to minimize fire hazards, controlled shutdown ofhigh-technological manufacturing operations to reduce potential losses, and safe-guardingof computer facilities to avoid loss of vital databases. We explored a practical approach toEEW with the use of a ground-motion period parameter τc and a high-pass filtered verticaldisplacement amplitude parameter Pd from the initial 3 sec of the P waveforms. At a givensite, an earthquake magnitude could be determined from τc and the peak ground-motionvelocity (PGV could be estimated from Pd. In this method, incoming strong motion acceleration signals are recursively converted to ground velocity and displacement. A Pwavetrigger is constantly monitored. When a trigger occurs, τc and Pd are computed. Theearthquake magnitude and the on-site ground-motion intensity could be estimated and thewarning could be issued. In an ideal situation, such warnings would be available within 10sec of the origin time of a large earthquake whose subsequent ground motion may last fortens of seconds.

  3. Crossover from weak to strong coupling superconductivity in multi-band systems

    Energy Technology Data Exchange (ETDEWEB)

    Dinola Neto, Francisco [Instituto de Fisica, Universidade Federal Fluminense, Campus da Praia Vermelha, Niteroi, RJ, 24.210-340 (Brazil); Continentino, Mucio A [Centro Brasileiro de Pesquisas FIsicas, Rua Dr Xavier Sigaud, 150-Urca, Rio de Janeiro, RJ, 22290-180 (Brazil); Lacroix, Claudine, E-mail: claudine.lacroix@grenoble.cnrs.f [Institut Neel, CNRS-UJF, 25 avenue des Martyrs, BP 166, 38042 Grenoble Cedex 9 (France)

    2010-02-24

    The study of superconductivity in correlated systems is an exciting area of condensed matter physics. In this paper we consider superconducting ground states in systems described by two-band models with different effective masses. These two bands are coupled through an effective hybridization that can be directly tuned by pressure. We consider the cases of s-wave superconductivity associated with the electrons in a narrow band and also with inter-band pairing. To study the system in the strong coupling regime we introduce the s-wave scattering length a{sub s}, and obtain the superconducting order parameters and the chemical potential as functions of the interaction strength 1/k{sub F}a{sub s} along the BCS-BEC crossover at T = 0. Finally, we discuss the phase diagram of this model as a function of external pressure and how our results can be applied for two-band systems as Fe pnictides or heavy fermions. The main result of this study is the occurrence of a superconducting quantum critical point (SQCP) in this two-band model.

  4. Atomic physics of strongly correlated systems: Progress report, 1 February 1988--15 January 1989

    International Nuclear Information System (INIS)

    Lin Chii-Dong.

    1989-01-01

    This report presents the progress made in our continuing study of strongly correlated atomic systems for the last contract period. In the area of hyperspherical coordinates for Coulombic three-body systems of arbitrary masses a general computing code has been developed. Calculation of the adiabatic potential curves have been accomplished for the e/sup /minus//e + e/sup /minus// system of arbitrary L, S and parity π. It was found that these curves behave very similar to the potential curves of H/sup /minus// except for a mass scaling. We have also examined the mass dependence of the ground state potential curves for systems of three charged particles, AAB, and showed that the curves become more attractive as the mass m/sub A/ becomes larger than m/sub B/. For ion-atom collisions we have examined the transfer-excitation (TE) processes to establish the importance of electron correlations in these two-electron transitions. We have also examined the orientation parameters for excited states formed in collisions with positive and negative charged particles to establish the relation between the sign of the charge of the incident particles to the sign of

  5. Density functional theory and dynamical mean-field theory. A way to model strongly correlated systems

    International Nuclear Information System (INIS)

    Backes, Steffen

    2017-04-01

    The study of the electronic properties of correlated systems is a very diverse field and has lead to valuable insight into the physics of real materials. In these systems, the decisive factor that governs the physical properties is the ratio between the electronic kinetic energy, which promotes delocalization over the lattice, and the Coulomb interaction, which instead favours localized electronic states. Due to this competition, correlated electronic systems can show unique and interesting properties like the Metal-Insulator transition, diverse phase diagrams, strong temperature dependence and in general a high sensitivity to the environmental conditions. A theoretical description of these systems is not an easy task, since perturbative approaches that do not preserve the competition between the kinetic and interaction terms can only be applied in special limiting cases. One of the most famous approaches to obtain the electronic properties of a real material is the ab initio density functional theory (DFT) method. It allows one to obtain the ground state density of the system under investigation by mapping onto an effective non-interacting system that has to be found self-consistently. While being an exact theory, in practical implementations certain approximations have to be made to the exchange-correlation potential. The local density approximation (LDA), which approximates the exchange-correlation contribution to the total energy by that of a homogeneous electron gas with the corresponding density, has proven quite successful in many cases. Though, this approximation in general leads to an underestimation of electronic correlations and is not able to describe a metal-insulator transition due to electronic localization in the presence of strong Coulomb interaction. A different approach to the interacting electronic problem is the dynamical mean-field theory (DMFT), which is non-perturbative in the kinetic and interaction term but neglects all non

  6. Density functional theory and dynamical mean-field theory. A way to model strongly correlated systems

    Energy Technology Data Exchange (ETDEWEB)

    Backes, Steffen

    2017-04-15

    The study of the electronic properties of correlated systems is a very diverse field and has lead to valuable insight into the physics of real materials. In these systems, the decisive factor that governs the physical properties is the ratio between the electronic kinetic energy, which promotes delocalization over the lattice, and the Coulomb interaction, which instead favours localized electronic states. Due to this competition, correlated electronic systems can show unique and interesting properties like the Metal-Insulator transition, diverse phase diagrams, strong temperature dependence and in general a high sensitivity to the environmental conditions. A theoretical description of these systems is not an easy task, since perturbative approaches that do not preserve the competition between the kinetic and interaction terms can only be applied in special limiting cases. One of the most famous approaches to obtain the electronic properties of a real material is the ab initio density functional theory (DFT) method. It allows one to obtain the ground state density of the system under investigation by mapping onto an effective non-interacting system that has to be found self-consistently. While being an exact theory, in practical implementations certain approximations have to be made to the exchange-correlation potential. The local density approximation (LDA), which approximates the exchange-correlation contribution to the total energy by that of a homogeneous electron gas with the corresponding density, has proven quite successful in many cases. Though, this approximation in general leads to an underestimation of electronic correlations and is not able to describe a metal-insulator transition due to electronic localization in the presence of strong Coulomb interaction. A different approach to the interacting electronic problem is the dynamical mean-field theory (DMFT), which is non-perturbative in the kinetic and interaction term but neglects all non

  7. Scientific and educational recommender systems

    Science.gov (United States)

    Guseva, A. I.; Kireev, V. S.; Bochkarev, P. V.; Kuznetsov, I. A.; Philippov, S. A.

    2017-01-01

    This article discusses the questions associated with the use of reference systems in the preparation of graduates in physical function. The objective of this research is creation of model of recommender system user from the sphere of science and education. The detailed review of current scientific and social network for scientists and the problem of constructing recommender systems in this area. The result of this study is to research user information model systems. The model is presented in two versions: the full one - in the form of a semantic network, and short - in a relational form. The relational model is the projection in the form of semantic network, taking into account the restrictions on the amount of bonds that characterize the number of information items (research results), which interact with the system user.

  8. Variational Approaches to the Evolution and Control of Strongly Driven Quantum Systems.

    Science.gov (United States)

    Widmayer, C. Clay

    Ongoing experimental advances, especially the advent of high intensity pulsed lasers, have produced the need for theoretical methods for modelling the behavior of quantum systems under the influence of strong driving fields. Despite decades of effort developing approaches adapted to strong driving, no single method enjoys the position of preeminence held by lowest order perturbation theory in the weak field regime. Three methods well suited to the time evolution of strongly driven systems are discussed and illustrated through numerical calculation. The impulse representation in which the time dependent Schrodinger equation is solved by switching to a shifted momentum space representation is described and applied to the problem of a hydrogen atom driven by a Stark kick for which the approach yields an exact solution. Using this result convenient exact closed form expressions for exctitation probabilities from the ground state are derived. Secondly, the time dependent variational method (TDVM) for obtaining approximate solutions to the Schrodinger equation by stationarizing an appropriately defined variational functional is discussed. A simple form of the equations of motion for time dependent variational parameters is derived and applied to the calculation of the radial wavefunction following the beta decay of tritium. Accurate values for time dependent observables are obtained by approximating the wavefunction as a superposition of the ground states of the Z = 1 and Z = 2 hydrogenic atoms. Finally, the control of quantum dynamics is considered and two methods are presented for deriving external fields for the purpose of driving a quantum system into a desired behavior. With the inverse control method a procedure is described for producing exact tracking of a time dependent observable. The method is applied to a two-level atom and is shown to lead to non-unique values of the driving field which exhibit undesirable numerical anomalies. The more robust method of

  9. Seismic detection system for blocking the dangerous installations in case of strong earthquake occurrence

    Science.gov (United States)

    Ghica, Daniela; Corneliu Rau, Dan; Ionescu, Constantin; Grigore, Adrian

    2010-05-01

    During the last 70 years, four major earthquakes occurred in the Vrancea seismic area affected Romania territory: 10 November 1940 (Mw = 7.7, 160 km depth), 4 March 1977 (Mw = 7.5, 100 km depth), 30 August 1986 (Mw = 7.2, 140 km depth), 30 May 30 1990 (Mw = 6.9, 80 km depth). Romania is a European country with significant seismicity. So far, the 1977 event had the most catastrophic consequences: about 33,000 residences were totally destroyed or partially deteriorated, 1,571 people dies and another 11,300 were injured. Moreover, 61 natural-gas pipelines were damaged, causing destructive fires. The total losses were estimated at 3 mld. U.S. dollars. Recent studies clearly pointed out that in case of a strong earthquake occurrence in Vrancea region (Ms above 7), the biggest danger regarding the major cities comes from explosions and fires started immediately after the earthquake, and the most important factor of risk are the natural gas distribution networks. The damages are strongly amplified by the fact that, simultaneously, water and electric energy lines distributions are damaged too, making impossible the efficient firemen intervention, for localizing the fire sources. Presently, in Romania safe and efficient accepted solutions for improving the buildings securing, using antiseismic protection of the dangerous installations as natural-gas pipelines are not available. Therefore, we propose a seismic detection system based on a seismically actuated gas shut-off valve, which is automatically shut down in case of a seismic shock. The device is intended to be installed in the natural-gas supply line outside of buildings, as well at each user (group of users), inside of the buildings. The seismic detection system for blocking the dangerous installations in case of a strong earthquake occurrence was designed on the basis of 12 criteria enforced by the US regulations for seismic valves, aimed to eliminate the critical situations as fluids and under pressure gases leakage

  10. A STRONGLY COUPLED REACTOR CORE ISOLATION COOLING SYSTEM MODEL FOR EXTENDED STATION BLACK-OUT ANALYSES

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Haihua [Idaho National Laboratory; Zhang, Hongbin [Idaho National Laboratory; Zou, Ling [Idaho National Laboratory; Martineau, Richard Charles [Idaho National Laboratory

    2015-03-01

    The reactor core isolation cooling (RCIC) system in a boiling water reactor (BWR) provides makeup cooling water to the reactor pressure vessel (RPV) when the main steam lines are isolated and the normal supply of water to the reactor vessel is lost. The RCIC system operates independently of AC power, service air, or external cooling water systems. The only required external energy source is from the battery to maintain the logic circuits to control the opening and/or closure of valves in the RCIC systems in order to control the RPV water level by shutting down the RCIC pump to avoid overfilling the RPV and flooding the steam line to the RCIC turbine. It is generally considered in almost all the existing station black-out accidents (SBO) analyses that loss of the DC power would result in overfilling the steam line and allowing liquid water to flow into the RCIC turbine, where it is assumed that the turbine would then be disabled. This behavior, however, was not observed in the Fukushima Daiichi accidents, where the Unit 2 RCIC functioned without DC power for nearly three days. Therefore, more detailed mechanistic models for RCIC system components are needed to understand the extended SBO for BWRs. As part of the effort to develop the next generation reactor system safety analysis code RELAP-7, we have developed a strongly coupled RCIC system model, which consists of a turbine model, a pump model, a check valve model, a wet well model, and their coupling models. Unlike the traditional SBO simulations where mass flow rates are typically given in the input file through time dependent functions, the real mass flow rates through the turbine and the pump loops in our model are dynamically calculated according to conservation laws and turbine/pump operation curves. A simplified SBO demonstration RELAP-7 model with this RCIC model has been successfully developed. The demonstration model includes the major components for the primary system of a BWR, as well as the safety

  11. Effective action for superfluid Fermi systems in the strong-coupling limit

    International Nuclear Information System (INIS)

    Dupuis, N.

    2005-01-01

    We derive the low-energy effective action for three-dimensional superfluid Fermi systems in the strong-coupling limit, where superfluidity originates from Bose-Einstein condensation of composite bosons. Taking into account density and pairing fluctuations on the same footing, we show that the effective action involves only the fermion density ρ r and its conjugate variable, the phase θ r of the pairing order parameter Δ r . We recover the standard action of a Bose superfluid of density ρ r /2, where the bosons have a mass m B =2m and interact via a repulsive contact potential with amplitude g B =4πa B /m B ,a B =2a (a the s-wave scattering length associated to the fermion-fermion interaction in vacuum). For lattice models, the derivation of the effective action is based on the mapping of the attractive Hubbard model onto the Heisenberg model in a uniform magnetic field, and a coherent state path integral representation of the partition function. The effective description of the Fermi superfluid in the strong-coupling limit is a Bose-Hubbard model with an intersite hopping amplitude t B =J/2 and an on-site repulsive interaction U B =2Jz, where J=4t 2 /U (t and -U are the intersite hopping amplitude and the on-site attraction in the (fermionic) Hubbard model, z the number of nearest-neighbor sites)

  12. Effective action for superfluid Fermi systems in the strong-coupling limit

    Science.gov (United States)

    Dupuis, N.

    2005-07-01

    We derive the low-energy effective action for three-dimensional superfluid Fermi systems in the strong-coupling limit, where superfluidity originates from Bose-Einstein condensation of composite bosons. Taking into account density and pairing fluctuations on the same footing, we show that the effective action involves only the fermion density ρr and its conjugate variable, the phase θr of the pairing order parameter Δr . We recover the standard action of a Bose superfluid of density ρr/2 , where the bosons have a mass mB=2m and interact via a repulsive contact potential with amplitude gB=4πaB/mB,aB=2a ( a the s -wave scattering length associated to the fermion-fermion interaction in vacuum). For lattice models, the derivation of the effective action is based on the mapping of the attractive Hubbard model onto the Heisenberg model in a uniform magnetic field, and a coherent state path integral representation of the partition function. The effective description of the Fermi superfluid in the strong-coupling limit is a Bose-Hubbard model with an intersite hopping amplitude tB=J/2 and an on-site repulsive interaction UB=2Jz , where J=4t2/U ( t and -U are the intersite hopping amplitude and the on-site attraction in the (fermionic) Hubbard model, z the number of nearest-neighbor sites).

  13. Probing the Small-scale Structure in Strongly Lensed Systems via Transdimensional Inference

    Science.gov (United States)

    Daylan, Tansu; Cyr-Racine, Francis-Yan; Diaz Rivero, Ana; Dvorkin, Cora; Finkbeiner, Douglas P.

    2018-02-01

    Strong lensing is a sensitive probe of the small-scale density fluctuations in the Universe. We implement a pipeline to model strongly lensed systems using probabilistic cataloging, which is a transdimensional, hierarchical, and Bayesian framework to sample from a metamodel (union of models with different dimensionality) consistent with observed photon count maps. Probabilistic cataloging allows one to robustly characterize modeling covariances within and across lens models with different numbers of subhalos. Unlike traditional cataloging of subhalos, it does not require model subhalos to improve the goodness of fit above the detection threshold. Instead, it allows the exploitation of all information contained in the photon count maps—for instance, when constraining the subhalo mass function. We further show that, by not including these small subhalos in the lens model, fixed-dimensional inference methods can significantly mismodel the data. Using a simulated Hubble Space Telescope data set, we show that the subhalo mass function can be probed even when many subhalos in the sample catalogs are individually below the detection threshold and would be absent in a traditional catalog. The implemented software, Probabilistic Cataloger (PCAT) is made publicly available at https://github.com/tdaylan/pcat.

  14. Hungary Higher Education Quality Assurance System

    Directory of Open Access Journals (Sweden)

    Che Ru-shan

    2013-07-01

    Full Text Available Higher education quality assurance system has drawn much attention since 1980s. Most countries are committed to build the higher education quality assurance system to meet international standards. Under such an international trend, Hungary also actively promotes higher education reform, and established Hungarian Accreditation Committee and in order to ensure the quality of higher education.

  15. Special Education Teacher Preparation in Singapore's Dual Education System

    Science.gov (United States)

    Walker, Zachary

    2016-01-01

    Global comparisons of teacher education programs should start with an understanding of the school systems that teachers are being prepared for in their local contexts. The purpose of this article is to describe Singapore's dual education system as well as teacher preparation in a country that educates many students with disabilities in a separate…

  16. Holstein-Primakoff representation and supercoherent states for strongly correlated electron systems

    International Nuclear Information System (INIS)

    Azakov, S.

    1999-09-01

    First we show that the algebra of operators entering the Hamiltonian of the t-J model describing the strongly correlated electron system is graded spl(2.1) algebra. Then after a brief discussion of its atypical representations we construct the Holstein-Primakoff nonlinear realization of these operators which allows to carry out the systematic semiclassical approximation, similarly to the spin-wave theory of localized magnetism. The fact that the t-J model describes the itinerant magnetism is reflected in the presence of the spinless fermions. For the supersymmetric spl(2.1) algebra the supercoherent states are proposed and the partition function of the t-J model is represented as a path integral with the help of these states. (author)

  17. Long Range Order and Spin-Fluctuations in Strongly Correlated Electron System with Valence Instability

    Science.gov (United States)

    Alekseev, P. A.; Menushenkov, A. P.; Mignot, J.-M.; Nemkovski, K. S.; Yaroslavtsev, A. A.; Kozlenko, D. P.

    Rare-earth based strongly correlated electron systems (SCES) exhibit a large variety of different ground states, ranging from the simple paramagnetism of crystal-field-split f-electron multiplets to highly unconventional Kondo-insulator states with a combination of charge gap, spin gap and valence instability, in which long-range magnetic order can eventually arise from an initially singlet state. The physical background for these properties of the electron subsystem may be clarified by performing detailed neutron scattering experiments, namely magnetic neutron scattering spectroscopy and diffraction. This report reviews the results of the previous and new experimental studies on a number of rare-earth intermetallic compounds, which shed light on peculiar features of those unusual ground states.

  18. Prospects for Probing Strong Gravity with a Pulsar-Black Hole System

    Science.gov (United States)

    Wex, N.; Liu, K.; Eatough, R. P.; Kramer, M.; Cordes, J. M.; Lazio, T. J. W.

    2012-01-01

    The discovery of a pulsar (PSR) in orbit around a black hole (BH) is expected to provide a superb new probe of relativistic gravity and BH properties. Apart from a precise mass measurement for the BH, one could expect a clean verification of the dragging of space-time caused by the BH spin. In order to measure the quadrupole moment of the BH for testing the no-hair theorem of general relativity (GR), one has to hope for a sufficiently massive BH. In this respect, a PSR orbiting the super-massive BH in the center of our Galaxy would be the ultimate laboratory for gravity tests with PSRs. But even for gravity theories that predict the same properties for BHs as GR, a PSR-BH system would constitute an excellent test system, due to the high grade of asymmetry in the strong field properties of these two components. Here we highlight some of the potential gravity tests that one could expect from different PSR-BH systems.

  19. Statistical properties of highly excited quantum eigenstates of a strongly chaotic system

    International Nuclear Information System (INIS)

    Aurich, R.; Steiner, F.

    1992-06-01

    Statistical properties of highly excited quantal eigenstates are studied for the free motion (geodesic flow) on a compact surface of constant negative curvature (hyperbolic octagon) which represents a strongly chaotic system (K-system). The eigenstates are expanded in a circular-wave basis, and it turns out that the expansion coefficients behave as Gaussian pseudo-random numbers. It is shown that this property leads to a Gaussian amplitude distribution P(ψ) in the semiclassical limit, i.e. the wavefunctions behave as Gaussian random functions. This behaviour, which should hold for chaotic systems in general, is nicely confirmed for eigenstates lying 10000 states above the ground state thus probing the semiclassical limit. In addition, the autocorrelation function and the path-correlation function are calculated and compared with a crude semiclassical Bessel-function approximation. Agreement with the semiclassical prediction is only found, if a local averaging is performed over roughly 1000 de Broglie wavelengths. On smaller scales, the eigenstates show much more structure than predicted by the first semiclassical approximation. (orig.)

  20. Expert system application education project

    Science.gov (United States)

    Gonzelez, Avelino J.; Ragusa, James M.

    1988-01-01

    Artificial intelligence (AI) technology, and in particular expert systems, has shown potential applicability in many areas of operation at the Kennedy Space Center (KSC). In an era of limited resources, the early identification of good expert system applications, and their segregation from inappropriate ones can result in a more efficient use of available NASA resources. On the other hand, the education of students in a highly technical area such as AI requires an extensive hands-on effort. The nature of expert systems is such that proper sample applications for the educational process are difficult to find. A pilot project between NASA-KSC and the University of Central Florida which was designed to simultaneously address the needs of both institutions at a minimum cost. This project, referred to as Expert Systems Prototype Training Project (ESPTP), provided NASA with relatively inexpensive development of initial prototype versions of certain applications. University students likewise benefit by having expertise on a non-trivial problem accessible to them at no cost. Such expertise is indispensible in a hands-on training approach to developing expert systems.

  1. «Strong as Death is Love»: Eros and Education at the End of Time

    Directory of Open Access Journals (Sweden)

    Samuel D Rocha

    2017-01-01

    Full Text Available This essay is an extended reflection on the relationship between death and love expressed in a fragment from Song of Songs 8:6: «Strong as death is love». The passage will be analyzed through a Jewish, Orthodox, and Catholic exegesis and literary reflection. In particular, the essay describes the role of a particular form of love (eros within a particular form of education (education at the end of time. While eros has frequently been ignored or resigned to a purely sexualized role, we will look closely at Augustine’s eulogy of his mother, Monica, in the Confessions, suggesting that perhaps the most visceral expression of eros is to be found in the phenomenology of death. We will also draw on the phenomenological manifestation of death by looking to the rich description of dying provided by Leo Tolstoy in his novella, The Death of Ivan Ilych. Together these investigations of eros and education yield a «curriculum of death», which draws on the re-conceptualist notion of curriculum. Our claim is that this curriculum of death offers a sense of urgency and seriousness found lacking in schools today, where death abounds, but is rarely if ever addressed in a humanistic way. This final methodological emphasis on the humanities elucidates more directly and critically the role of research for a curriculum of death within the dominance of social science in the field of education.

  2. Education and training support system

    International Nuclear Information System (INIS)

    Kubota, Rhuji; Iyadomi, Motomi.

    1996-01-01

    In order to train the specialist such as operator or maintenance stuff of large scale plant such as nuclear power plant or thermal power plant, a high grade teaching and training support system is required as well as in training pilot of aeroplane. The specialist in such large scale plant is also a researcher in the field of machinery, electricity and physics at first, and is grown up a expert operator or maintenance stuff through learning of CAI system or OTJ used training material for teaching tool in addition of training used operating or maintenance training device imitating actual plant after acquiring determined knowledges by receiving fundamental education on nuclear and thermal power plants. In this paper, the teaching and training support systems of the nuclear and thermal power plants for a system supporting such teaching and training, respectively, were introduced. (G.K.)

  3. Intricacies of modern supercomputing illustrated with recent advances in simulations of strongly correlated electron systems

    Science.gov (United States)

    Schulthess, Thomas C.

    2013-03-01

    The continued thousand-fold improvement in sustained application performance per decade on modern supercomputers keeps opening new opportunities for scientific simulations. But supercomputers have become very complex machines, built with thousands or tens of thousands of complex nodes consisting of multiple CPU cores or, most recently, a combination of CPU and GPU processors. Efficient simulations on such high-end computing systems require tailored algorithms that optimally map numerical methods to particular architectures. These intricacies will be illustrated with simulations of strongly correlated electron systems, where the development of quantum cluster methods, Monte Carlo techniques, as well as their optimal implementation by means of algorithms with improved data locality and high arithmetic density have gone hand in hand with evolving computer architectures. The present work would not have been possible without continued access to computing resources at the National Center for Computational Science of Oak Ridge National Laboratory, which is funded by the Facilities Division of the Office of Advanced Scientific Computing Research, and the Swiss National Supercomputing Center (CSCS) that is funded by ETH Zurich.

  4. Phase separation in strongly correlated electron systems with two types of charge carriers

    International Nuclear Information System (INIS)

    Kugel, K.I.; Rakhmanov, A.L.; Sboychakov, A.O.

    2007-01-01

    Full text: A competition between the localization of the charge carriers due to Jahn-Teller distortions and the energy gain due to their delocalization in doped manganite and related magnetic oxides is analyzed based on a Kondo-lattice type model. The resulting effective Hamiltonian is, in fact, a generalization of the Falicov-Kimball model. We find that the number of itinerant charge carriers can be significantly lower than that implied by the doping level x. The phase diagram of the model in the T plane is constructed. The system exhibits magnetic ordered (antiferromagnetic, ferromagnetic, or canted) states as well the paramagnetic states with zero and nonzero density of the itinerant electrons. It is shown that a phase-separation is favorable in energy for a wide doping range. The characteristic size of inhomogeneities in a phase-separated state is of the order of several lattice constants. We also analyzed the two-band Hubbard model in the limit of strong on-site Coulomb repulsion. It was shown that such a system has a tendency to phase separation into the regions with different charge densities even in the absence of magnetic or any other ordering, if the ratio of the bandwidths is large enough. The work was supported by the European project CoMePhS and by the Russian Foundation for Basic Research, project no. 05-02-17600. (authors)

  5. Strong Tracking Filter for Nonlinear Systems with Randomly Delayed Measurements and Correlated Noises

    Directory of Open Access Journals (Sweden)

    Hongtao Yang

    2018-01-01

    Full Text Available This paper proposes a novel strong tracking filter (STF, which is suitable for dealing with the filtering problem of nonlinear systems when the following cases occur: that is, the constructed model does not match the actual system, the measurements have the one-step random delay, and the process and measurement noises are correlated at the same epoch. Firstly, a framework of decoupling filter (DF based on equivalent model transformation is derived. Further, according to the framework of DF, a new extended Kalman filtering (EKF algorithm via using first-order linearization approximation is developed. Secondly, the computational process of the suboptimal fading factor is derived on the basis of the extended orthogonality principle (EOP. Thirdly, the ultimate form of the proposed STF is obtained by introducing the suboptimal fading factor into the above EKF algorithm. The proposed STF can automatically tune the suboptimal fading factor on the basis of the residuals between available and predicted measurements and further the gain matrices of the proposed STF tune online to improve the filtering performance. Finally, the effectiveness of the proposed STF has been proved through numerical simulation experiments.

  6. Electronic structure and superconductivity in strongly correlated systems in the pseudogap regime

    Energy Technology Data Exchange (ETDEWEB)

    Puig-Puig, L.; Lopez-Aguilar, F. [Grup d`Electromagnetisme, Departament de Fisica, Edifici Cn, Universitat Autonoma de Barcelona, E-08193 Ballaterra (Barcelona) (Spain)

    1995-12-15

    We propose effective potentials from a screened Coulomb interaction which arises from spin-fluctuation effects within a three-dimensional Hubbard single-band model for systems with strongly correlated electrons within the pseudogap regime. This regime is characterized by the existence in the normal state of at least two structures located at both sides of the Fermi level and split by a gap or pseudogap. This is the most crucial assumption in the analysis performed in this work. We consider the proposed effective interactions between fermions, analyzing the possibility of obtaining superconductivity by means of the formulation of the corresponding Dyson-like equations for the normal and anomalous one-body propagators in the state with bosonic condensation. We also include vertex effects within these effective fermion-fermion interactions and discuss their influence in this formalism in order to consider a Migdal-like theory appropriate to Hubbard systems. In cases where superconductivity is found, the critical temperature is obtained and the influence of the band and potential parameters is analyzed.

  7. On the evolution of the density probability density function in strongly self-gravitating systems

    International Nuclear Information System (INIS)

    Girichidis, Philipp; Konstandin, Lukas; Klessen, Ralf S.; Whitworth, Anthony P.

    2014-01-01

    The time evolution of the probability density function (PDF) of the mass density is formulated and solved for systems in free-fall using a simple approximate function for the collapse of a sphere. We demonstrate that a pressure-free collapse results in a power-law tail on the high-density side of the PDF. The slope quickly asymptotes to the functional form P V (ρ)∝ρ –1.54 for the (volume-weighted) PDF and P M (ρ)∝ρ –0.54 for the corresponding mass-weighted distribution. From the simple approximation of the PDF we derive analytic descriptions for mass accretion, finding that dynamically quiet systems with narrow density PDFs lead to retarded star formation and low star formation rates (SFRs). Conversely, strong turbulent motions that broaden the PDF accelerate the collapse causing a bursting mode of star formation. Finally, we compare our theoretical work with observations. The measured SFRs are consistent with our model during the early phases of the collapse. Comparison of observed column density PDFs with those derived from our model suggests that observed star-forming cores are roughly in free-fall.

  8. Multiphoton-resonance-induced fluorescence of a strongly driven two-level system under frequency modulation

    Science.gov (United States)

    Yan, Yiying; Lü, Zhiguo; Luo, JunYan; Zheng, Hang

    2018-03-01

    We study the fluorescence spectrum of a strongly driven two-level system (TLS) with modulated transition frequency, which is a bichromatically driven TLS and has multiple resonance frequencies. We are aiming to provide a reliable description of the fluorescence in a regime that is difficult to tackle with perturbation theory and the rotating-wave approximation (RWA), and illustrate the spectral features of the fluorescence under off- and multiphoton-resonance conditions. To go beyond the RWA, we use a semianalytical counter-rotating-hybridized rotating-wave method that combines a unitary transformation and Floquet theory to calculate the two-mode Floquet states and quasienergies for the bichromatically driven TLS. We then solve the master equation accounting for the spontaneous decay in the bases of the two-mode Floquet states, and derive a physically transparent fluorescence spectrum. In comparison with the numerically exact spectrum from the generalized Floquet-Liouville approach, the present spectrum is found to be applicable in a wide range of the parameters where the RWA and the secular approximation may break down. We find that the counter-rotating (CR) terms of the transverse field omitted in the RWA have non-negligible contributions to the spectrum under certain conditions. Particularly, at the multiphoton resonance the width of which is comparable with the Bloch-Siegert shift, the RWA and non-RWA spectra markedly differ from each other because of the CR-induced shift. We also analyze the symmetry of the spectrum in terms of the transition matrix elements between the two-mode Floquet states. We show that the strict symmetry of the spectrum cannot be expected without the RWA but the almost symmetric spectrum can be obtained at the single-photon resonance that takes the Bloch-Siegert shift into account if the driving is moderately strong and at the multiphoton resonance with a sufficiently weak transverse field.

  9. A grounded theory study of 'turning into a strong nurse': Earthquake experiences and perspectives on disaster nursing education.

    Science.gov (United States)

    Li, Yan; Turale, Sue; Stone, Teresa E; Petrini, Marcia

    2015-09-01

    While Asia has the dubious distinction of being the world's most natural disaster-prone area, disaster nursing education and training are sparse in many Asian countries, especially China where this study took place. To explore the earthquake disaster experiences of Chinese nurses and develop a substantive theory of earthquake disaster nursing that will help inform future development of disaster nursing education. A qualitative study employing grounded theory, informed by symbolic interactionism. Fifteen Chinese registered nurses from five hospitals in Jiangxi Province who undertook relief efforts after the 2008 Wenchuan Earthquake. Data were collected in 2012-2013 in digitally-recorded, semi-structured, in-depth interviews and reflective field notes, and analyzed using Glaser's grounded theory method. Participants were unprepared educationally and psychologically for their disaster work. Supporting the emergent theory of "working in that terrible environment", was the core category of "turning into a strong nurse", a process of three stages: "going to the disaster"; "immersing in the disaster"; and "trying to let disaster experiences fade away". The participants found themselves thrust in "terrible" scenes of destruction, experienced personal dangers and ethical dilemmas, and tried the best they could to help survivors, communities and themselves, with limited resources and confronting professional work. Our rich findings confirm those of other studies in China and elsewhere, that attention must be paid to disaster education and training for nurses, as well as the mental health of nurses who work in disaster areas. Emergent theory helps to inform nurse educators, researchers, leaders and policy makers in China, and elsewhere in developing strategies to better prepare nurses for future disasters, and assist communities to prepare for and recover after earthquake disasters. Copyright © 2015 Elsevier Ltd. All rights reserved.

  10. Critical Behavior of a Strongly-Interacting 2D Electron System

    Science.gov (United States)

    Sarachik, Myriam P.

    2013-03-01

    Two-dimensional (2D) electron systems that obey Fermi liquid theory at high electron densities are expected to undergo one or more transitions to spatially and/or spin-ordered phases as the density is decreased, ultimately forming a Wigner crystal in the dilute, strongly-interacting limit. Interesting, unexpected behavior is observed with decreasing electron density as the electrons' interactions become increasingly important relative to their kinetic energy: the resistivity undergoes a transition from metallic to insulating temperature dependence; the resistance increases sharply and then saturates abruptly with increasing in-plane magnetic field; a number of experiments indicate that the electrons' effective mass exhibits a substantial increase approaching a finite ``critical'' density. There has been a great deal of debate concerning the underlying physics in these systems, and many have questioned whether the change of the resistivity from metallic to insulating signals a phase transition or a crossover. In this talk, I will report measurements that show that with decreasing density ns, the thermopower S of a low-disorder 2D electron system in silicon exhibits a sharp increase by more than an order of magnitude, tending to a divergence at a finite, disorder-independent density nt, consistent with the critical form (- T / S) ~(ns -nt) x with x = 1 . 0 +/- 0 . 1 (T is the temperature). Unlike the resistivity which may not clearly distinguish between a transition and crossover behavior, the thermopower provides clear evidence that a true phase transition occurs with decreasing density to a new low-density phase. Work supported by DOE Grant DE-FG02-84ER45153, BSF grant 2006375, RFBR, RAS, and the Russian Ministry of Science.

  11. Entrepreneurship Education in the Virginia Community College System.

    Science.gov (United States)

    Drury, Richard L.; Mallory, Walter D.

    2000-01-01

    Examines the extent of credit and non-credit offerings in entrepreneurship and small-business management in the Virginia Community College System (VCCS). Indicates that entrepreneurship training and education is not a priority at all Virginia community colleges. Finds that there is strong demand for such offerings from students enrolled in the…

  12. VizieR Online Data Catalog: Extremely strong damped Lyman-α systems (Noterdaeme+, 2014)

    Science.gov (United States)

    Noterdaeme, P.; Petitjean, P.; Paris, I.; Cai, Z.; Finley, H.; Ge, J.; Pieri, M. M.; York, D. G.

    2014-07-01

    We present a study of ~100 high redshift (z ~2-4) extremely strong damped Lyman-α systems (ESDLA, with N(HI)>=0.5x1022cm-2) detected in quasar spectra from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey (SDSS-III) Data Release 11. We study the neutral hydrogen, metal, and dust content of this elusive population of absorbers and confirm our previous finding that the high column density end of the N(HI) frequency distribution has a relatively shallow slope with power-law index -3.6, similar to what is seen from 21-cm maps in nearby galaxies. The stacked absorption spectrum indicates a typical metallicity ~1/20th solar, similar to the mean metallicity of the overall DLA population. The relatively small velocity extent of the low-ionisation lines suggests that ESDLAs do not arise from large-scale flows of neutral gas. The high column densities involved are in turn more similar to what is seen in DLAs associated with gamma-ray burst afterglows (GRB-DLAs), which are known to occur close to star-forming regions. This indicates that ESDLAs arise from a line of sight passing at very small impact parameters from the host galaxy, as observed in nearby galaxies. This is also supported by simple theoretical considerations and recent high-z hydrodynamical simulations. We strongly substantiate this picture by the first statistical detection of Lyα emission with =~(0.6+/-0.2)x1042erg/s in the core of ESDLAs (corresponding to about 0.1L* at z~2-3), obtained through stacking the fibre spectra (of radius 1" corresponding to ~8kpc at z~2.5). Statistical errors on the Lyα luminosity are of the order of 0.1x1042erg/s but we caution that the measured Lyα luminosity may be overestimated by ~35% due to sky light residuals and/or FUV emission from the quasar host and that we have neglected flux-calibration uncertainties. We estimate a more conservative uncertainty of 0.2x1042erg/s. The properties of the Lyα line (luminosity distribution, velocity

  13. Finite-Temperature Variational Monte Carlo Method for Strongly Correlated Electron Systems

    Science.gov (United States)

    Takai, Kensaku; Ido, Kota; Misawa, Takahiro; Yamaji, Youhei; Imada, Masatoshi

    2016-03-01

    A new computational method for finite-temperature properties of strongly correlated electrons is proposed by extending the variational Monte Carlo method originally developed for the ground state. The method is based on the path integral in the imaginary-time formulation, starting from the infinite-temperature state that is well approximated by a small number of certain random initial states. Lower temperatures are progressively reached by the imaginary-time evolution. The algorithm follows the framework of the quantum transfer matrix and finite-temperature Lanczos methods, but we extend them to treat much larger system sizes without the negative sign problem by optimizing the truncated Hilbert space on the basis of the time-dependent variational principle (TDVP). This optimization algorithm is equivalent to the stochastic reconfiguration (SR) method that has been frequently used for the ground state to optimally truncate the Hilbert space. The obtained finite-temperature states allow an interpretation based on the thermal pure quantum (TPQ) state instead of the conventional canonical-ensemble average. Our method is tested for the one- and two-dimensional Hubbard models and its accuracy and efficiency are demonstrated.

  14. Strongly interacting Fermi systems in 1/N expansion: From cold atoms to color superconductivity

    International Nuclear Information System (INIS)

    Abuki, Hiroaki; Brauner, Tomas

    2008-01-01

    We investigate the 1/N expansion proposed recently as a strategy to include quantum fluctuation effects in the nonrelativistic, attractive Fermi gas at and near unitarity. We extend the previous results by calculating the next-to-leading order corrections to the critical temperature along the whole crossover from Bardeen-Cooper-Schrieffer (BCS) superconductivity to Bose-Einstein condensation. We demonstrate explicitly that the extrapolation from the mean-field approximation, based on the 1/N expansion, provides a useful approximation scheme only on the BCS side of the crossover. We then apply the technique to the study of strongly interacting relativistic many-fermion systems. Having in mind the application to color superconductivity in cold dense quark matter, we develop, within a simple model, a formalism suitable to compare the effects of order parameter fluctuations in phases with different pairing patterns. Our main conclusion is that the relative correction to the critical temperature is to a good accuracy proportional to the mean-field ratio of the critical temperature and the chemical potential. As a consequence, it is significant even rather deep in the BCS regime, where phenomenologically interesting values of the quark-quark coupling are expected. Possible impact on the phase diagram of color-superconducting quark matter is discussed.

  15. Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission.

    Science.gov (United States)

    Genova, Antonio; Mazarico, Erwan; Goossens, Sander; Lemoine, Frank G; Neumann, Gregory A; Smith, David E; Zuber, Maria T

    2018-01-18

    The NASA MESSENGER mission explored the innermost planet of the solar system and obtained a rich data set of range measurements for the determination of Mercury's ephemeris. Here we use these precise data collected over 7 years to estimate parameters related to general relativity and the evolution of the Sun. These results confirm the validity of the strong equivalence principle with a significantly refined uncertainty of the Nordtvedt parameter η = (-6.6 ± 7.2) × 10 -5 . By assuming a metric theory of gravitation, we retrieved the post-Newtonian parameter β = 1 + (-1.6 ± 1.8) × 10 -5 and the Sun's gravitational oblateness, [Formula: see text] = (2.246 ± 0.022) × 10 -7 . Finally, we obtain an estimate of the time variation of the Sun gravitational parameter, [Formula: see text] = (-6.13 ± 1.47) × 10 -14 , which is consistent with the expected solar mass loss due to the solar wind and interior processes. This measurement allows us to constrain [Formula: see text] to be <4 × 10 -14 per year.

  16. Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission

    Science.gov (United States)

    Genova, Antonio; Mazarico, Erwan; Goossens, Sander; Lemoine, Frank G.; Neumann, Gregory A.; Smith, David E.; Zuber, Maria T.

    2018-01-01

    The NASA MESSENGER mission explored the innermost planet of the solar system and obtained a rich data set of range measurements for the determination of Mercury's ephemeris. Here we use these precise data collected over 7 years to estimate parameters related to general relativity and the evolution of the Sun. These results confirm the validity of the strong equivalence principle with a significantly refined uncertainty of the Nordtvedt parameter η = (-6.6 ± 7.2) × 10-5. By assuming a metric theory of gravitation, we retrieved the post-Newtonian parameter β = 1 + (-1.6 ± 1.8) × 10-5 and the Sun's gravitational oblateness, J2⊙J2⊙ = (2.246 ± 0.022) × 10-7. Finally, we obtain an estimate of the time variation of the Sun gravitational parameter, GM⊙°/GM⊙GM⊙°/GM⊙ = (-6.13 ± 1.47) × 10-14, which is consistent with the expected solar mass loss due to the solar wind and interior processes. This measurement allows us to constrain ∣∣G°∣∣/GG°/G to be <4 × 10-14 per year.

  17. Deterministic alternatives to the full configuration interaction quantum Monte Carlo method for strongly correlated systems

    Science.gov (United States)

    Tubman, Norm; Whaley, Birgitta

    The development of exponential scaling methods has seen great progress in tackling larger systems than previously thought possible. One such technique, full configuration interaction quantum Monte Carlo, allows exact diagonalization through stochastically sampling of determinants. The method derives its utility from the information in the matrix elements of the Hamiltonian, together with a stochastic projected wave function, which are used to explore the important parts of Hilbert space. However, a stochastic representation of the wave function is not required to search Hilbert space efficiently and new deterministic approaches have recently been shown to efficiently find the important parts of determinant space. We shall discuss the technique of Adaptive Sampling Configuration Interaction (ASCI) and the related heat-bath Configuration Interaction approach for ground state and excited state simulations. We will present several applications for strongly correlated Hamiltonians. This work was supported through the Scientific Discovery through Advanced Computing (SciDAC) program funded by the U.S. Department of Energy, Office of Science, Advanced Scientific Computing Research and Basic Energy Sciences.

  18. Effects of Integrating Peace Education in the Nigeria Education System

    Science.gov (United States)

    Olowo, Oluwatoyin Olusegun

    2016-01-01

    This paper attempted to investigate the effects of integrating Peace Education into Nigeria educational system. Four research questions were designed for the study. The researcher designed an instrument tagged: Questionnaire on effect of Integrating Peace Education (QEIPE). The entire population of two hundred respondents spread across Secondary…

  19. Antioxidants and embryo phenotype: is there experimental evidence for strong integration of the antioxidant system?

    Science.gov (United States)

    Possenti, Cristina Daniela; Karadas, Filiz; Colombo, Graziano; Caprioli, Manuela; Rubolini, Diego; Milzani, Aldo; Donne, Isabella Dalle; Saino, Nicola; Parolini, Marco

    2017-02-15

    Organisms have evolved complex defense systems against oxidative stress. Bird eggs contain maternally derived antioxidants that protect embryos from oxidative damage. The antioxidant system components are thought to be integrated, but few studies have analyzed the covariation between antioxidant concentrations, embryo 'oxidative status' and morphology. In addition, no study has tested the effects of experimental change in yolk antioxidant concentration on other antioxidants, on their reciprocal relationships and on their relationships with embryo oxidative status or growth, which are expected if antioxidants defenses are integrated. In yellow-legged gull ( Larus michahellis ) embryos, we analyzed the covariation between several antioxidants, markers of 'oxidative status' [total antioxidant capacity (TAC), concentration of pro-oxidants (TOS), lipid peroxidation (LPO) and protein carbonylation (PC)] in the yolk, liver and brain, and morphology. Yolk and liver antioxidant concentrations were positively correlated reciprocally and with embryo size, and positively predicted TAC but not oxidative status. TOS and LPO were positively correlated in the liver, while TAC and LPO were negatively correlated in the brain. Weak relationships existed between antioxidants and TOS, PC and LPO. The effects of antioxidants on oxidative status and morphology were non-synergistic. An experimental physiological increase in yolk vitamin E had very weak effects on the relationships between other antioxidants or oxidative status and vitamin E concentration, the concentration of other antioxidants or oxidative status; the covariation between other antioxidants and oxidative status, and relationships between morphology or oxidative status and other antioxidants, challenging the common wisdom of strong functional relationships among antioxidants, at least for embryos in the wild. © 2017. Published by The Company of Biologists Ltd.

  20. Philosophical skepticism not relativism is the problem with the Strong Programme in Science Studies and with Educational Constructivism

    Science.gov (United States)

    Papayannakos, Dimitris P.

    2008-06-01

    The structure of David’s Bloor argument for the Strong Programme (SP) in Science Studies is criticized from the philosophical perspective of anti-skeptical, scientific realism. The paper transforms the common criticism of SP—that the symmetry principle of SP implies an untenable form of cognitive relativism—into the clear philosophical issue of naturalism versus Platonism. It is also argued that the concrete patterns of SP’s interest-explanations and its sociological definition of knowledge involve philosophical skepticism. It is claimed, then, that the most problematic elements of SP reside primarily in philosophical skepticism. It is also claimed that this sort of criticism can be directed against other more radical, versions of constructivism in science and science education studies.

  1. Knowledge Mobilisation in the Polish Education System

    Science.gov (United States)

    Fazlagic, Jan; Erkol, Arif

    2015-01-01

    Poland has made substantial progress in improving the quality of its education system in recent years. This paper aims to describe the situation of the Polish education system from a knowledge management perspective and, to some extent, through innovation policies in education. The many challenges, this paper argues, can be tackled only through…

  2. Matrix-product states for strongly correlated systems and quantum information processing

    Energy Technology Data Exchange (ETDEWEB)

    Saberi, Hamed

    2008-12-12

    This thesis offers new developments in matrix-product state theory for studying the strongly correlated systems and quantum information processing through three major projects: In the first project, we perform a systematic comparison between Wilson's numerical renormalization group (NRG) and White's density-matrix renormalization group (DMRG). The NRG method for solving quantum impurity models yields a set of energy eigenstates that have the form of matrix-product states (MPS). White's DMRG for treating quantum lattice problems can likewise be reformulated in terms of MPS. Thus, the latter constitute a common algebraic structure for both approaches. We exploit this fact to compare the NRG approach for the single-impurity Anderson model to a variational matrix-product state approach (VMPS), equivalent to single-site DMRG. For the latter, we use an ''unfolded'' Wilson chain, which brings about a significant reduction in numerical costs compared to those of NRG. We show that all NRG eigenstates (kept and discarded) can be reproduced using VMPS, and compare the difference in truncation criteria, sharp vs. smooth in energy space, of the two approaches. Finally, we demonstrate that NRG results can be improved upon systematically by performing a variational optimization in the space of variational matrix-product states, using the states produced by NRG as input. In the second project we demonstrate how the matrix-product state formalism provides a flexible structure to solve the constrained optimization problem associated with the sequential generation of entangled multiqubit states under experimental restrictions. We consider a realistic scenario in which an ancillary system with a limited number of levels performs restricted sequential interactions with qubits in a row. The proposed method relies on a suitable local optimization procedure, yielding an efficient recipe for the realistic and approximate sequential generation of any

  3. Matrix-product states for strongly correlated systems and quantum information processing

    International Nuclear Information System (INIS)

    Saberi, Hamed

    2008-01-01

    This thesis offers new developments in matrix-product state theory for studying the strongly correlated systems and quantum information processing through three major projects: In the first project, we perform a systematic comparison between Wilson's numerical renormalization group (NRG) and White's density-matrix renormalization group (DMRG). The NRG method for solving quantum impurity models yields a set of energy eigenstates that have the form of matrix-product states (MPS). White's DMRG for treating quantum lattice problems can likewise be reformulated in terms of MPS. Thus, the latter constitute a common algebraic structure for both approaches. We exploit this fact to compare the NRG approach for the single-impurity Anderson model to a variational matrix-product state approach (VMPS), equivalent to single-site DMRG. For the latter, we use an ''unfolded'' Wilson chain, which brings about a significant reduction in numerical costs compared to those of NRG. We show that all NRG eigenstates (kept and discarded) can be reproduced using VMPS, and compare the difference in truncation criteria, sharp vs. smooth in energy space, of the two approaches. Finally, we demonstrate that NRG results can be improved upon systematically by performing a variational optimization in the space of variational matrix-product states, using the states produced by NRG as input. In the second project we demonstrate how the matrix-product state formalism provides a flexible structure to solve the constrained optimization problem associated with the sequential generation of entangled multiqubit states under experimental restrictions. We consider a realistic scenario in which an ancillary system with a limited number of levels performs restricted sequential interactions with qubits in a row. The proposed method relies on a suitable local optimization procedure, yielding an efficient recipe for the realistic and approximate sequential generation of any entangled multiqubit state. We give

  4. Systems Analysis and Education Research Literature Review.

    Science.gov (United States)

    Geisinger, Robert W.

    Systems approaches, developed in World War II for military and business operations, have been applied increasingly to educational affairs. Educational systems analysis has received widespread usage in finance and accounting, and has also been successfully applied to information systems, instructional systems development, school design and…

  5. PREFACE: International Conference on Strongly Correlated Electron Systems 2014 (SCES2014)

    Science.gov (United States)

    2015-03-01

    The 2014 International Conference on Strongly Correlated Electron Systems (SCES) was held in Grenoble from the 7th to 11th of July on the campus of the University of Grenoble. It was a great privilege to have the conference in Grenoble after the series of meetings in Sendai (1992), San Diego (1993), Amsterdam (1994), Goa (1995), Zürich (1996), Paris (1998), Nagano (1999), Ann Arbor (2001), Krakow (2002), Karlsruhe (2004), Vienna (2005), Houston (2007), Buzios (2008), Santa Fe (2010), Cambridge (2011) and Tokyo (2013). Every three years, SCES joins the triennial conference on magnetism ICM. In 2015, ICM will take place in Barcelona. The meeting gathered an audience of 875 participants who actively interacted inside and outside of conference rooms. A large number of posters (530) was balanced with four parallel oral sessions which included 86 invited speakers and 141 short oral contributions. A useful arrangement was the possibility to put poster presentations on the website so participants could see them all through the conference week. Each morning two plenary sessions were held, ending on Friday with experimental and theoretical summaries delivered by Philipp Gegenwart (Augsburg) and Andrew Millis (Columbia). The plenary sessions were given by Gabriel Kotliar (Rutgers), Masashi Kawasaki (Tokyo), Jennifer Hoffman (Harvard), Mathias Vojta (Dresden), Ashvin Vishwanath (Berkeley), Andrea Cavalleri (Hamburg), Marc-Henri Julien (Grenoble), Neil Mathur (Cambridge), Giniyat Khaliullin (Stuttgart), and Toshiro Sakakibara (Tokyo). The parallel oral sessions were prepared by 40 symposium organizers selected by the chairman (Antoine Georges) and co-chairman (Kamran Behnia) of the Program Committee with the supplementary rule that speakers had not delivered an invited talk at the previous SCES conference held in 2013 in Tokyo. Special attention was given to help young researchers via grants to 40 overseas students. Perhaps due to the additional possibility of cheap

  6. Critical experiments on an enriched uranium solution system containing periodically distributed strong thermal neutron absorbers

    International Nuclear Information System (INIS)

    Rothe, R.E.

    1996-01-01

    A series of 62 critical and critical approach experiments were performed to evaluate a possible novel means of storing large volumes of fissile solution in a critically safe configuration. This study is intended to increase safety and economy through use of such a system in commercial plants which handle fissionable materials in liquid form. The fissile solution's concentration may equal or slightly exceed the minimum-critical-volume concentration; and experiments were performed for high-enriched uranium solution. Results should be generally applicable in a wide variety of plant situations. The method is called the 'Poisoned Tube Tank' because strong neutron absorbers (neutron poisons) are placed inside periodically spaced stainless steel tubes which separate absorber material from solution, keeping the former free of contamination. Eight absorbers are investigated. Both square and triangular pitched lattice patterns are studied. Ancillary topics which closely model typical plant situations are also reported. They include the effect of removing small bundles of absorbers as might occur during inspections in a production plant. Not taking the tank out of service for these inspections would be an economic advantage. Another ancillary topic studies the effect of the presence of a significant volume of unpoisoned solution close to the Poisoned Tube Tank on the critical height. A summary of the experimental findings is that boron compounds were excellent absorbers, as expected. This was true for granular materials such as Gerstley Borate and Borax; but it was also true for the flexible solid composed of boron carbide and rubber, even though only thin sheets were used. Experiments with small bundles of absorbers intentionally removed reveal that quite reasonable tanks could be constructed that would allow a few tubes at a time to be removed from the tank for inspection without removing the tank from production service

  7. The System of Higher Education in CSFR

    OpenAIRE

    Kopp, Botho von

    1991-01-01

    By dividing his article in two chapters ("1. From the founding of Charles University to the modern higher education system" and "2. The higher education system 1948-1989") the author gives an historical overview over the sytem of higher education in CSFR, whereas he covers the following aspects in the second chapter: "Basic data on higher education", "Organization and structure of the course of studies" and "Developments after 1989 and future trends". (DIPF/ ssch.)

  8. European Educational Systems and Assessment Practice

    DEFF Research Database (Denmark)

    Evans, Robert Harry; Cross, David; Grangeat, Michel

    2018-01-01

    Abstract This chapter surveys the status of educational systems and assessment practices across eight European countries that are part of the ASSIST-ME project. First, variations in country educational systems are examined to identify possible connections between systems and educational practices....... Such associations are useful both for understanding different existing assessment conditions as well as for providing possible pathways for change. Next, the chapter takes a closer look at teacher practices in these educational systems in order to identify the actual assessment practices of teachers in each country....... With these understandings of the systems and current uses of assessment, it is possible to identify affordances and challenges for improving assessment practices....

  9. Strong inbreeding depression and individually variable mating system in the narrow endemic Erodium cazorlanum (Geraniaceae

    Directory of Open Access Journals (Sweden)

    Alonso, Conchita

    2013-06-01

    Full Text Available Angiosperms evolved different systems to attract effective pollinators while reducing selfing in hermaphroditic flowers. Selfing ability can be advantageous when pollinators and/or mates are scarce, although inbreeding depression may largely reduce those advantages. Recent comparative analyses suggested endemic species tend to evolve self-compatibility but a better understanding of the associated reproductive and genetic tradeoffs is required. Experimental hand-pollinations under greenhouse conditions were conducted to investigate the selfing ability and estimate inbreeding depression up to the offspring’ first reproductive event in Ero dium cazorlanum, a narrow endemic species restricted to dolomite outcrops in SE Spanish mountains. We found autonomous selfing ineffective. Further, when experimentally applied, pollen of the same flower produced significantly fewer fruits and seeds compared to geitonogamous and cross pollinations. The number of seeds per fruit was significantly higher after cross pollinations and strong inbreeding depression accumulated through the life-cycle. Interestingly, individual plants exhibited broad variation in selfing ability with six out of 14 individuals producing no seed after geitonogamy. Understanding the consequences of individual variation in self compatibility deserves further investigation in the field now that we know that strong inbreeding depression may limit recruitment of selfed progeny.Las Angiospermas han desarrollado diversos sistemas para atraer polinizadores eficientes y al mismo tiempo reducir la posibilidad de autopolinización asociada al hermafroditismo. La capacidad de autopolinización puede ser ventajosa en situaciones de escasez de polinizadores y/o individuos reproductores, beneficios que pueden reducirse ampliamente a causa de la depresión por endogamia. Análisis filogenéticos recientes indicaron que las especies endémicas tienden a presentar sistemas de autocompatibilidad, por tanto

  10. Local Magnetism in Strongly Correlated Electron Systems with Orbital Degrees of Freedom

    Science.gov (United States)

    Ducatman, Samuel Charles

    The central aim of my research is to explain the connection between the macroscopic behavior and the microscopic physics of strongly correlated electron systems with orbital degrees of freedom through the use of effective models. My dissertation focuses on the sub-class of these materials where electrons appear to be localized by interactions, and magnetic ions have well measured magnetic moments. This suggests that we can capture the low-energy physics of the material by employing a minimal model featuring localized spins which interact with each other through exchange couplings. I describe Fe1+y Te and beta-Li2IrO3 with effective models primarily focusing on the spins of the magnetic ions, in this case Fe and Ir, respectively. The goal with both materials is to gain insight and make predictions for experimentalists. In chapter 2, I focus on Fe1+yTe. I describe why we believe the magnetic ground state of this material, with an observed Bragg peak at Q +/- pi/2, pi/2), can be described by a Heisenberg model with 1st, 2nd, and 3rd neighbor interactions. I present two possible ground states of this model in the small J1 limit, the bicollinear and plaquette states. In order to predict which ground state the model prefers, I calculate the spin wave spectrum with 1/S corrections, and I find the model naturally selects the "plaquette state." I give a brief description of the ways this result could be tested using experimental techniques such as polarized neutron scattering. In chapter 3, I extend the model used in chapter 2. This is necessary because the Heisenberg model we employed cannot explain why Fe1+yTe undergoes a phase transition as y is increased. We add an additional elements to our calculation; we assume that electrons in some of the Fe 3D orbitals have selectively localized while others remain itinerant. We write a new Hamiltonian, where localized moments acquire a new long-range RKKY-like interaction from interactions with the itinerant electrons. We are

  11. Impact of strong climate change on balancing and storage needs in a fully renewable energy system

    Science.gov (United States)

    Weber, Juliane; Wohland, Jan; Witthaut, Dirk

    2017-04-01

    We investigate the impact of strong climate change on a European energy system dominated by wind power. No robust trend can be observed regarding the change of the wind power yield for most countries in Europe. However, intra-annual variabilities in wind power generation robustly increase in most of Central and Western Europe and decrease in Spain, Portugal and Greece by the end of this century. Thus, the generation of wind power tends to increase (decrease) in the winter months compared to the summer months. Due to higher (lower) intra-annual variations, the probability for extreme events with long periods of low power production increases (decreases) in summer. This implies that more (less) energy has to be provided by backup power plants. Our simulations are based on the results of five different Global Climate Models (GCMs) using the Representative Concentration Pathway scenario 8.5 (RCP8.5). These results are dynamically downscaled with the regional atmospheric model RCA4 by the EURO-CORDEX initiative (Coordinated Downscaling Experiment - European Domain). A comparison was made between historical data (1970-2000) and mid-century (2030-2060) and end-of-century (2070-2100) data, respectively. For all timeframes we made the assumption that a certain amount of energy is provided by wind power plants. This implies that changes in wind power potentials are neglected and only temporal effects are considered. Wind speed time series are converted to power generation time series using an extrapolation to hub height and a standardized power curve. Assuming a scenario for the future distribution of wind turbines, we obtain a wind power generation time series aggregated on a national level. The operation of backup power plants and storage facilities is simulated on coarse scales assuming an optimal storage strategy. Backup is required whenever the storage facilities are empty. The amount of change of the backup energy depends on the storage capacity - the higher the

  12. Earth System Science Education Modules

    Science.gov (United States)

    Hall, C.; Kaufman, C.; Humphreys, R. R.; Colgan, M. W.

    2009-12-01

    The College of Charleston is developing several new geoscience-based education modules for integration into the Earth System Science Education Alliance (ESSEA). These three new modules provide opportunities for science and pre-service education students to participate in inquiry-based, data-driven experiences. The three new modules will be discussed in this session. Coastal Crisis is a module that analyzes rapidly changing coastlines and uses technology - remotely sensed data and geographic information systems (GIS) to delineate, understand and monitor changes in coastal environments. The beaches near Charleston, SC are undergoing erosion and therefore are used as examples of rapidly changing coastlines. Students will use real data from NASA, NOAA and other federal agencies in the classroom to study coastal change. Through this case study, learners will acquire remotely sensed images and GIS data sets from online sources, utilize those data sets within Google Earth or other visualization programs, and understand what the data is telling them. Analyzing the data will allow learners to contemplate and make predictions on the impact associated with changing environmental conditions, within the context of a coastal setting. To Drill or Not To Drill is a multidisciplinary problem based module to increase students’ knowledge of problems associated with nonrenewable resource extraction. The controversial topic of drilling in the Arctic National Wildlife Refuge (ANWR) examines whether the economic benefit of the oil extracted from ANWR is worth the social cost of the environmental damage that such extraction may inflict. By attempting to answer this question, learners must balance the interests of preservation with the economic need for oil. The learners are exposed to the difficulties associated with a real world problem that requires trade-off between environmental trust and economic well-being. The Citizen Science module challenges students to translate scientific

  13. Europe's strong primary care systems are linked to better population health but also to higher health spending

    NARCIS (Netherlands)

    Kringos, Dionne S.; Boerma, Wienke; van der Zee, Jouke; Groenewegen, Peter

    2013-01-01

    Strong primary care systems are often viewed as the bedrock of health care systems that provide high-quality care, but the evidence supporting this view is somewhat limited. We analyzed comparative primary care data collected in 2009-10 as part of a European Union-funded project, the Primary Health

  14. Europe's strong primary care systems are linked to better population health but also to higher health spending.

    NARCIS (Netherlands)

    Kringos, D.S.; Boerma, W.; Zee, J. van der; Groenewegen, P.

    2013-01-01

    Strong primary care systems are often viewed as the bedrock of health care systems that provide high-quality care, but the evidence supporting this view is somewhat limited. We analyzed comparative primary care data collected in 2009-10 as part of a European Union-funded project, the Primary Health

  15. Strongly Correlated Electron Systems in The Half Filled Band of The ...

    African Journals Online (AJOL)

    Strong correlation of interacting electrons has been widely studied under the single band Hubbard model with the aid of several techniques. These numerous studies have been carried out at different band filling. In this work, the ground state properties in the half filled band in one dimension are studied employing a ...

  16. PNG Education System: Equity Trends and Comparisons.

    Science.gov (United States)

    Sheret, Michael

    This paper identifies and discusses inequities in the educational system of Papua New Guinea (PNG). It begins by explaining the use of the Gini coefficient as an equity index, and then discusses inequities and equity trends in four concern areas: geographic distribution of formal education between provinces; educational achievement; distribution…

  17. The Dutch vocational education and training system

    NARCIS (Netherlands)

    Verhagen, A.M.C.

    2014-01-01

    The Dutch educational system is highly stratified from secondary education onwards3, and this also applies to MBO. Each MBO course can be followed in two different learning pathways, called the vocationally educating learning pathway (beroepsopleidende leerweg: BOL) and the vocationally guiding

  18. Enhancing the Nigerian Educational System through Creative ...

    African Journals Online (AJOL)

    The paper discusses creative dramatics as a symbolic tool for educational development. It also clarifies the meaning and objectives of creative dramatics as well as the functions of drama. It reviews the current deplorable educational system in Nigeria and concludes that if our educational policy-makers are able to muster ...

  19. Dynamic Education as a Modern Education System of University

    Science.gov (United States)

    Buranská, Eva; Buranský, Ivan

    2014-06-01

    The contribution discusses the issue of modern education system of university. This method of education was designed within the KEGA project. Implementation of on-line classroom for dynamic education of the secondary technical school and university students focused on the design and manufacturing of freeform surfaces. The main objective of this teaching method of is improving the parent faculty cooperation with training centres and increasing the interest of secondary school students in the university studies of technical orientation.

  20. Educational systems - educational qualification of nuclear power plant personnel

    International Nuclear Information System (INIS)

    Boeger, H.

    1986-01-01

    In this lecture the following common features of education and training systems are described: - description of general school education, vocational training and engineering study programs, - allocation of categories of activities to normal school training backgrounds, - recommendations for educational and training programs required for various positions in nuclear power plants (formal and on-the-job training), - examinations and licences for the personnel at nuclear power plants. (orig./GL)

  1. Advances in the Application of the Similarity Renormalization Group to Strongly Interacting Systems

    Science.gov (United States)

    Wendt, Kyle Andrew

    The Similarity Renormalization Group (SRG) as applied in nuclear physics is a tool to soften and decouple inter-nucleon interactions. The necessity for such a tool is generated by the strong coupling of high- and low-momentum degrees of freedom in modern precision interactions. In recent years the SRG have been used with great success in enhancing few (2-12) nucleon calculations, but there are still many open questions about the nature of the SRG, and how it affects chiral forces. This thesis focuses on three topics within the study of the SRG as it applies to nuclear few-body interactions, with a focus on nuclear forces from chiral effective field theory. The typical SRG applied to nuclear physics is the T̂ rel-SRG, which uses the relative kinetic energy to generate a renormalizing flow. However, this generator explicitly violates criteria that ensure the SRG will decouple the interaction. Previous study of this generator found for a simple model that as the resolution is lowered past the momentum scales associated with a bound state, the T̂rel-SRG enhances coupling near the bound state whereas the classical Wegner generator completely decouples the bound state. In practice, this has not been an issue because the only two-body bound state is very shallow, and therefore well below the SRG softening scales. This study is extended to use leading order chiral effective field theory with large cutoffs to explore this decoupling. This builds in the same low energy physics while including spurious high energy details, including high energy bound states. The evolutions with T̂rel-SRG are compared to the evolution with Wegner's generator. During the decoupling process, the SRG can induce new non-local contributions to the interactions, which inhibits its application using Quantum Monte Carlo (QMC) methods. Separating out the non-local terms is numerically difficult. Instead an approximate separation is applied to T̂ rel-SRG evolved interactions and the nature of the

  2. Quality evaluation of the educational systems & educational administration and institutions

    OpenAIRE

    Pazhakh, A. R.

    2006-01-01

    The quality evaluation of educational systems as well as educational administration andinstitutions are described and discussed. Different analytical and conceptual approaches to these points are given. Conclusions are drawn and future lines of research in these topics are suggested and pointed out.

  3. Strong light-matter coupling from atoms to solid-state systems

    CERN Document Server

    2014-01-01

    The physics of strong light-matter coupling has been addressed in different scientific communities over the last three decades. Since the early eighties, atoms coupled to optical and microwave cavities have led to pioneering demonstrations of cavity quantum electrodynamics, Gedanken experiments, and building blocks for quantum information processing, for which the Nobel Prize in Physics was awarded in 2012. In the framework of semiconducting devices, strong coupling has allowed investigations into the physics of Bose gases in solid-state environments, and the latter holds promise for exploiting light-matter interaction at the single-photon level in scalable architectures. More recently, impressive developments in the so-called superconducting circuit QED have opened another fundamental playground to revisit cavity quantum electrodynamics for practical and fundamental purposes. This book aims at developing the necessary interface between these communities, by providing future researchers with a robust conceptu...

  4. Sensitive Detection of Individual Neutral Atoms in a Strong Coupling Cavity QED System

    International Nuclear Information System (INIS)

    Zhang Peng-Fei; Zhang Yu-Chi; Li Gang; Du Jin-Jin; Zhang Yan-Feng; Guo Yan-Qiang; Wang Jun-Min; Zhang Tian-Cai; Li Wei-Dong

    2011-01-01

    We experimentally demonstrate real-time detection of individual cesium atoms by using a high-finesse optical micro-cavity in a strong coupling regime. A cloud of cesium atoms is trapped in a magneto-optical trap positioned at 5 mm above the micro-cavity center. The atoms fall down freely in gravitation after shutting off the magneto-optical trap and pass through the cavity. The cavity transmission is strongly affected by the atoms in the cavity, which enables the micro-cavity to sense the atoms individually. We detect the single atom transits either in the resonance or various detunings. The single atom vacuum-Rabi splitting is directly measured to be Ω = 2π × 23.9 MHz. The average duration of atom-cavity coupling of about 110 μs is obtained according to the probability distribution of the atom transits. (fundamental areas of phenomenology(including applications))

  5. Energy Partitioning and Impulse Dispersion in the Decorated, Tapered, Strongly Nonlinear Granular Alignment: A System with Many Potential Applications

    Science.gov (United States)

    2010-03-01

    indeed studied the dynamics of our systems at impulses approaching speeds 750 m /s and preliminary analyses using state of the art hydrocodes17...These systems, now referred to as deco - rated TCs DTCs, represent a significant improvement and turn out to be strongly nonlinear in their...presented. Hard sphere approximations for both systems follow in Sec. III. Section IV outlines the numerical approach and results for the deco - rated chain

  6. Educational Systems, Intergenerational Mobility and Social Segmentation

    Directory of Open Access Journals (Sweden)

    Nathalie Chusseau

    2011-12-01

    Full Text Available We show that the very characteristics of educational systems generate social segmentation. A stylised educational framework is constructed in which everyone receives a compulsory basic education and can subsequently choose between direct working, vocational studies and university. There is a selection for entering the university which consists of a minimum human capital level at the end of basic education. In the model, an individual's human capital depends (i on her/his parents' human capital, (ii on her/his schooling time, and (iii on public expenditure for education. There are three education functions corresponding to each type of study (basic, vocational, university. Divergences in total educational expenditure, in its distribution between the three studies and in the selection severity, combined with the initial distribution of human capital across individuals, can result in very different social segmentations and generate under education traps (situations in which certain dynasties remain unskilled from generation to generation at the steady state. We finally implement a series of simulations that illustrate these findings in the cases of egalitarian and elitist educational systems. Assuming the same initial distribution of human capital between individuals, we find that the first system results in two-segment stratification, quasi income equality and no under education trap whereas the elitist system generates three segments, significant inequality and a large under education trap

  7. EDUCATION SYSTEM OF UKRAINE AS AN OBJECT OF INFORMATIZATION: STRUCTURE OF THE EDUCATION SYSTEM

    OpenAIRE

    Anatolii Yu. Pylypchuk

    2010-01-01

    The structure of an education system and kinds of activities which are being carried out in it, belongs to the major parameters of the education system characterizing it as an object of informatization. In the paper there is considered the structure of the education system in Ukraine, its components and their dependence. These researches as well as the researches of kinds of activity are necessary for the creation of effective systems of informatization both separate objects, and an education...

  8. Educational Management Information Systems: Progress and Prospectives.

    Science.gov (United States)

    Evans, John A.

    An educational management information system is a network of communication channels, information sources, computer storage and retrieval devices, and processing routines that provide data to educational managers at different levels, places, and times to facilitate decisionmaking. Management information systems should be differentiated from…

  9. Characteristics of the higher education system

    NARCIS (Netherlands)

    Jongbloed, Benjamin W.A.; Sijgers, Irene; Hammer, Matthijs; ter Horst, Wolf; Nieuwenhuis, Paul; van der Sijde, Peter

    2005-01-01

    This chapter presents an overview of the main characteristics of the higher education system in the Netherlands. Section 2.1 presents some key facts about the system as a whole (types of institutions, number of students, degrees). Section 2.2 discusses the different types of higher education

  10. Innovations in Educational System: Mobile Learning Applications

    Science.gov (United States)

    Rokhvadze, Roza F.; Yelashkina, Natalya V.

    2013-01-01

    This article presents the analysis of the current changes in the higher educational system of the Russian Federation. The stated issues are accompanied with the advice and possible solutions. Authors offer their own approaches and techniques for the academic staff of higher educational institutions in order to adapt to the new system.

  11. Application of Educational Technology Resource and Systems ...

    African Journals Online (AJOL)

    This paper examined the application of educational technology resource systems approach in teaching English Language highlighting some inadequacies observed in educational system in Nigeria. Language is the most unique gift to man from God for language differentiates man from animals. This forms the basis to ...

  12. Eclectic Model in the Malaysian Education System

    Science.gov (United States)

    Othman, Nooraini; Mohamad, Khairul Azmi; Ilmuwan, Yayasan

    2011-01-01

    The present work aims at analysing the adoption of eclectic model in the Malaysian education system. The analysis is specifically looked from the angle of Islam and the Muslims. Malaysia has a long history of education system developments, from pre to post independence of the country. From what was initially traditional, modernity later came to…

  13. Higher Education Systems 3.0: Harnessing Systemness, Delivering Performance. Critical Issues in Higher Education

    Science.gov (United States)

    Lane, Jason E., Ed.; Johnstone, D. Bruce, Ed.

    2013-01-01

    This thought-provoking volume brings together scholars and system leaders to analyze some of the most pressing and complex issues now facing higher education systems and society. Higher Education Systems 3.0 focuses on the remaking of higher education coordination in an era of increased accountability, greater calls for productivity, and…

  14. The Greek Education System and Implications for the Turkish Education System

    Science.gov (United States)

    Karabulut, Nuriye

    2018-01-01

    The purpose of the current study is to make a detailed introduction to the Greek education system and to compare it with the Turkish education system to come up with some implications for the latter. To this end, the literature was reviewed. A general introduction was made to Greece and its education system was examined considering its goals,…

  15. The optimism trap: Migrants' educational choices in stratified education systems.

    Science.gov (United States)

    Tjaden, Jasper Dag; Hunkler, Christian

    2017-09-01

    Immigrant children's ambitious educational choices have often been linked to their families' high level of optimism and motivation for upward mobility. However, previous research has mostly neglected alternative explanations such as information asymmetries or anticipated discrimination. Moreover, immigrant children's higher dropout rates at the higher secondary and university level suggest that low performing migrant students could have benefitted more from pursuing less ambitious tracks, especially in countries that offer viable vocational alternatives. We examine ethnic minority's educational choices using a sample of academically low performing, lower secondary school students in Germany's highly stratified education system. We find that their families' optimism diverts migrant students from viable vocational alternatives. Information asymmetries and anticipated discrimination do not explain their high educational ambitions. While our findings further support the immigrant optimism hypothesis, we discuss how its effect may have different implications depending on the education system. Copyright © 2017. Published by Elsevier Inc.

  16. Strong Optical Activity of HDE 245770/A0535+26 System

    Science.gov (United States)

    Giovannelli, Franco; Gualandi, Roberto; Sabau-Graziati, Lola

    2010-03-01

    The O9.7IIIe star HDE 245770, nicknamed Flavia' star, is the optical counterpart of the X-ray pulsar A0535+26. On March 19, 2010 from UT 18hh 45mm 37ss to 19hh 28mm 07ss at the Loiano 1.52 m telescope we performed optical spectroscopy of this star in the range 330 - 785 nm [Delta(lambda) from about 0.4 to 0.3 nm] by using the BFOSC (Bologna Faint Object Spectrograph & Camera). The first analysis of the spectra shows a strong optical activity of the star.

  17. THE OPEN EDUCATION SYSTEM: FORMATION AND FUNCTIONING

    Directory of Open Access Journals (Sweden)

    Julia A. Mamonova

    2014-01-01

    Full Text Available The study is aimed at developing the basic principles of foundation and functioning of the open educational system, its relevance results from the strategic goal of knowledge integration facing the modern universities.The research findings and novelty: The author identifies the general needs of the users of open educational resources and proves the advantages of organizing the institutional repositories, based on sociological surveys targeting the university students of Nizhny Novgorod and academic staff of several Russian higher schools. The basic principles of the unified educational information and communications environment were developed, and a feasible structure of educational portal presented.The practical significance: The research outcomes, complying with the new ≪consumer strategies≫, can be used by the higher educational institutions for developing the distance system of education and implementing the open educational resources in academic process.

  18. Spin excitations in systems with hopping electron transport and strong position disorder in a large magnetic field

    Science.gov (United States)

    Shumilin, A. V.

    2016-10-01

    We discuss the spin excitations in systems with hopping electron conduction and strong position disorder. We focus on the problem in a strong magnetic field when the spin Hamiltonian can be reduced to the effective single-particle Hamiltonian and treated with conventional numerical technics. It is shown that in a 3D system with Heisenberg exchange interaction the spin excitations have a delocalized part of the spectrum even in the limit of strong disorder, thus leading to the possibility of the coherent spin transport. The spin transport provided by the delocalized excitations can be described by a diffusion coefficient. Non-homogenous magnetic fields lead to the Anderson localization of spin excitations while anisotropy of the exchange interaction results in the Lifshitz localization of excitations. We discuss the possible effect of the additional exchange-driven spin diffusion on the organic spin-valve devices.

  19. Generalized ensemble method applied to study systems with strong first order transitions

    Science.gov (United States)

    Małolepsza, E.; Kim, J.; Keyes, T.

    2015-09-01

    At strong first-order phase transitions, the entropy versus energy or, at constant pressure, enthalpy, exhibits convex behavior, and the statistical temperature curve correspondingly exhibits an S-loop or back-bending. In the canonical and isothermal-isobaric ensembles, with temperature as the control variable, the probability density functions become bimodal with peaks localized outside of the S-loop region. Inside, states are unstable, and as a result simulation of equilibrium phase coexistence becomes impossible. To overcome this problem, a method was proposed by Kim, Keyes and Straub [1], where optimally designed generalized ensemble sampling was combined with replica exchange, and denoted generalized replica exchange method (gREM). This new technique uses parametrized effective sampling weights that lead to a unimodal energy distribution, transforming unstable states into stable ones. In the present study, the gREM, originally developed as a Monte Carlo algorithm, was implemented to work with molecular dynamics in an isobaric ensemble and coded into LAMMPS, a highly optimized open source molecular simulation package. The method is illustrated in a study of the very strong solid/liquid transition in water.

  20. A pure shift experiment with increased sensitivity and superior performance for strongly coupled systems

    Science.gov (United States)

    Ilgen, Julian; Kaltschnee, Lukas; Thiele, Christina M.

    2018-01-01

    Motivated by the persisting need for enhanced resolution in solution state NMR spectra, pure shift techniques such as Zangger-Sterk decoupling have recently attracted widespread interest. These techniques for homonuclear decoupling offer enhanced resolution in one- and multidimensional proton detected experiments by simplifying multiplet structures. In this work, a modification to the popular Zangger-Sterk technique PEPSIE (Perfect Echo Pure Shift Improved Experiment) is presented, which decouples pairs of spins even if they share the same volume element. This in turn can drastically improve the sensitivity, as compared to classical Zangger-Sterk decoupling, as larger volume elements can be used to collect the detected signal. Most interestingly, even in the presence of moderate strong coupling, the PEPSIE experiment produces clean and widely artifact free spectra. In order to better understand this - to us initially - surprising behaviour we performed analyses using numerical simulations and derived an (approximate) analytical solution from density matrix formalism. We show that this experiment is particularly suitable to study samples with strong signal clustering, a situation which can render classic Zangger-Sterk decoupling inefficient.

  1. AN OVERVIEW OF THE ROMANIAN EDUCATION SYSTEM

    Directory of Open Access Journals (Sweden)

    CLAUDIA ANDREEA UREAN

    2017-06-01

    Full Text Available A foundation of human development and one of the most powerful instruments in the fight against poverty, education is the premise in building a solid construction. Education arms people with knowledge on social development and progress. An extension of our latest work “Romanian education system – descriptive analysis”, the aim of the present research is to offer an overview of the Romanian education system which has passed through many radical reforms over the last 27 years. The first part of our research presents some studies identified in the specialized literature which analyze the Romanian education system. The state of the art is followed by descriptive statistics regarding the enrolled population trends in Romania - by urban and rural areas, by counties and by gender-during the period 1995-2015; the enrollment rate in formal education and the dropout rate. The last part of our research represents the conclusions section.

  2. Applying Sustainable Systems Development Approach to Educational Technology Systems

    Science.gov (United States)

    Huang, Albert

    2012-01-01

    Information technology (IT) is an essential part of modern education. The roles and contributions of technology to education have been thoroughly documented in academic and professional literature. Despite the benefits, the use of educational technology systems (ETS) also creates a significant impact on the environment, primarily due to energy…

  3. General properties of quantum optical systems in a strong field limit

    Science.gov (United States)

    Chumakov, S. M.; Klimov, Andrei B.

    1994-01-01

    We investigate the dynamics of an arbitrary atomic system (n-level atoms or many n-level atoms) interacting with a resonant quantized mode of an em field. If the initial field state is a coherent state with a large photon number then the system dynamics possesses some general features, independently of the particular structure of the atomic system. Namely, trapping states, factorization of the wave function, collapses and revivals of the atomic energy oscillations are discussed.

  4. System safety education focused on system management

    Science.gov (United States)

    Grose, V. L.

    1971-01-01

    System safety is defined and characteristics of the system are outlined. Some of the principle characteristics include role of humans in hazard analysis, clear language for input and output, system interdependence, self containment, and parallel analysis of elements.

  5. Living in a country with a strong primary care system is beneficial to people with chronic conditions.

    NARCIS (Netherlands)

    Hansen, J.; Groenewegen, P.P.; Boerma, W.G.W.; Kringos, D.S.

    2015-01-01

    In light of the growing pressure that multiple chronic diseases place on health care systems, we investigated whether strong primary care was associated with improved health outcomes for the chronically ill. We did this by combining country- and individual-level data for the twenty-seven countries

  6. Living In A Country With A Strong Primary Care System Is Beneficial To People With Chronic Conditions

    NARCIS (Netherlands)

    Hansen, Johan; Groenewegen, Peter P.; Boerma, Wienke G. W.; Kringos, Dionne S.

    2015-01-01

    In light of the growing pressure that multiple chronic diseases place on health care systems, we investigated whether strong primary care was associated with improved health outcomes for the chronically ill. We did this by combining country- and individual-level data for the twenty-seven countries

  7. Living in a country with a strong primary care system is beneficial to people with chronic conditions

    NARCIS (Netherlands)

    Hansen, Johan; Groenewegen, Peter P.|info:eu-repo/dai/nl/071985409; Boerma, Wienke G W; Kringos, Dionne S.|info:eu-repo/dai/nl/352077131

    2015-01-01

    In light of the growing pressure that multiple chronic diseases place on health care systems, we investigated whether strong primary care was associated with improved health outcomes for the chronically ill. We did this by combining country- and individual-level data for the twenty-seven countries

  8. A Modified Lindstedt–Poincaré Method for a Strongly Nonlinear System with Quadratic and Cubic Nonlinearities

    Directory of Open Access Journals (Sweden)

    S.H. Chen

    1996-01-01

    Full Text Available A modified Lindstedt–Poincaré method is presented for extending the range of the validity of perturbation expansion to strongly nonlinear oscillations of a system with quadratic and cubic nonlinearities. Different parameter transformations are introduced to deal with equations with different nonlinear characteristics. All examples show that the efficiency and accuracy of the present method are very good.

  9. UCLA, British astronomers discover wake of planet around nearby star. Strong evidence for solar system like ours

    CERN Multimedia

    2002-01-01

    "An international team of astronomers reports the first strong evidence for the existence of massive planets on wide orbits - like those of Saturn, Uranus and Neptune - around many stars. The new research provides some of the strongest evidence so far that solar systems similar to our own, or even larger, are likely to exist: (1 page).

  10. Observation and quantification of the quantum dynamics of a strong-field excited multi-level system.

    Science.gov (United States)

    Liu, Zuoye; Wang, Quanjun; Ding, Jingjie; Cavaletto, Stefano M; Pfeifer, Thomas; Hu, Bitao

    2017-01-04

    The quantum dynamics of a V-type three-level system, whose two resonances are first excited by a weak probe pulse and subsequently modified by another strong one, is studied. The quantum dynamics of the multi-level system is closely related to the absorption spectrum of the transmitted probe pulse and its modification manifests itself as a modulation of the absorption line shape. Applying the dipole-control model, the modulation induced by the second strong pulse to the system's dynamics is quantified by eight intensity-dependent parameters, describing the self and inter-state contributions. The present study opens the route to control the quantum dynamics of multi-level systems and to quantify the quantum-control process.

  11. On strongly correlated N-electron systems | Enaibe | Journal of the ...

    African Journals Online (AJOL)

    An attempt is made in this work to extend the correlated variational approach of Chen and Mei [1], which was developed for two-electron systems, to N-electron systems (N>2). Preliminary results are reported here for four electrons interacting under a Hubbard-type potential in a one-dimensional lattice with only four sites

  12. Micro-Macro Compatibility: When Does a Complex Systems Approach Strongly Benefit Science Learning?

    Science.gov (United States)

    Samon, Sigal; Levy, Sharona T.

    2017-01-01

    The study explores how a complexity approach empowers science learning. A complexity approach represents systems as many interacting entities. The construct of micro-macro compatibility is introduced, the degree of similarity between behaviors at the micro- and macro-levels of the system. Seventh-grade students' learning about gases was studied…

  13. Moral Education or Political Education in the Vietnamese Educational System?

    Science.gov (United States)

    Doan, Dung Hue

    2005-01-01

    Vietnam has experienced the influences of different social standards and values of Confucianism, Communism and several major religions, such as Buddhism and Catholicism, and has also undergone tremendous social change in recent decades. Consequently, moral education in present-day Vietnam takes various forms and definitions. Nowadays, moral…

  14. EDUCATION AND EDUCATIONAL SYSTEM MANAGEMENT: STATUS, TRENDS, PROBLEMS AND PROSPECTS

    Directory of Open Access Journals (Sweden)

    V. P. Panasyuk

    2017-01-01

    Full Text Available Introduction. The current stage of development of education in Russia, characterized by the continuation of reforms and intense innovation processes, require essential changes in management. It takes not only a revision of the paradigmatic foundations of such management, but also the adoption of complex measures for improving its efficiency, and reducing excessive centralization.The aim of the present publication is to study the status and prospects of education management in the Russian Federation.Methodology and research methods. The author used the methodology of an interdisciplinary and system-based approaches to the analysis of the considered phenomenon; methods of theoretical analysis, synthesis and generalization.Results. Negative tendencies and contradictions in modern management of education and educational systems, including problems of differentiation of the rights, competences and powers of bodies of various levels of management are revealed. The condition of education management is considered in the context of common problems of its modernization and key innovative vectors of development of the society. Detailed analysis of paradigmatic foundations of management is carried out; its systemacity and balance are presented from the positions of management members and a specific variety of the functions realized by them. System-genetic foundations of management, its recurrence, compliance with the principles of system inheritance are analysed; effectiveness, equifinality, management efficiency in its social, economic, pedagogical and organizational measurements are studied.Scientific novelty concludes in the reasons identification of a gap between the proper and existing management of an educational system. The perspective directions of improvement of this field are singled out.Practical significance. The author provides the recommendations on the use of the proposed ideas concerning the revision of the current approaches to the

  15. Hard X-ray PhotoEmission Spectroscopy of strongly correlated systems

    Science.gov (United States)

    Panaccione, Giancarlo; Offi, Francesco; Sacchi, Maurizio; Torelli, Piero

    2008-06-01

    Hard X-ray PhotoEmission Spectroscopy (HAXPES) is a new tool for the study of bulk electronic properties of solids using synchrotron radiation. We review recent achievements of HAXPES, with particular reference to the VOLPE project, showing that high energy resolution and bulk sensitivity can be obtained at kinetic energies of 6-8 keV. We present also the results of recent studies on strongly correlated materials, such as vanadium sesquioxide and bilayered manganites, revealing the presence of different screening properties in the bulk with respect to the surface. We discuss the relevant experimental features of the metal-insulator transition in these materials. To cite this article: G. Panaccione et al., C. R. Physique 9 (2008).

  16. Auxiliary-Field Quantum Monte Carlo Simulations of Strongly-Correlated Systems, the Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Chang, C. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2017-11-07

    In this final report, we present preliminary results of ground state phases of interacting spinless Dirac fermions. The name "Dirac fermion" originates from the fact that low-energy excitations of electrons hopping on the honeycomb lattice are described by a relativistic Dirac equation. Dirac fermions have received much attention particularly after the seminal work of Haldale1 which shows that the quantum Hall physics can be realized on the honeycomb lattice without magnetic fields. Haldane's work later becomes the foundation of topological insulators (TIs). While the physics of TIs is based largely on spin-orbit coupled non-interacting electrons, it was conjectured that topological insulators can be induced by strong correlations alone.

  17. Calculations of the one-body electronic structure of the strongly correlated systems including self-energy effects

    Energy Technology Data Exchange (ETDEWEB)

    Costa-Quintana, J.; Sanchez-Lopez, M.M.; Lopez-Aguilar, F. [Grup d`Electromagnetisme, Edifici Cn, Universitat Autonoma de Barcelona 08193, Bellaterra, Barcelona (Spain)

    1996-10-01

    We give a method to obtain the quasiparticle band structure and renormalized density of states by diagonalizing the interacting system Green function. This method operates for any self-energy approximation appropriated to strongly correlated systems. Application to CeSi{sub 2} and YBa{sub 2}Cu{sub 3}O{sub 7} is analyzed as a probe for this band calculation method. {copyright} {ital 1996 The American Physical Society.}

  18. Analysis of impact of “strong DC and weak AC” on receiving-end power system

    Science.gov (United States)

    Wang, Qiang; Li, Tianran; Yang, Pengcheng

    2018-02-01

    The rapid development of UHVDC transmission project has brought abundant power supply to the receiving-end power system area, but also many security and stability problems. This paper summarizes four elements that affect the strength of AC system, and then simulates the most basic two-terminal single-pole UHV transmission system by MATLAB/Simulink. It analyses the impact of receiving-end AC power system strength on real-time power, frequency and voltage. Finally, in view of operation risk of “strong DC and weak AC”, this paper puts forward three countermeasures.

  19. Ferromagnetic instabilities in disordered systems in the limit of strong correlations

    International Nuclear Information System (INIS)

    Magalhaes, A.N.; Troper, A.; Gomes, A.A.

    1976-05-01

    One derives the criterion for ferromagnetic instabilities in hybridized disordered systems, e.g. transition metal like systems and actinides, within the Coherent Potential Approximation (CPA), the electron-electron correlations being described by Hubbard' approximation. In the case of actinides, one treats approximately the motion of d electrons while the diagonal disorder within the f band is fully taken into account. In the case of a trnsition metal like system, except for Hubbard's approximation in dealing with d-d electron correlations, our procedure is exact within the spirit of CPA

  20. Latest Development of Real-Time Strong-Motion Monitoring System in Taiwan

    Science.gov (United States)

    Hsiao, N.; Wu, Y.; Shin, T.; Teng, T.

    2003-12-01

    Based on the experience of the 1999 Chi-Chi Earthquake, the Central Weather Bureau (CWB) has made substantial improvements to the earthquake rapid report system. Besides the current use of digital lease phone line and internet transmission, the satellite link for station to center is setup for backup. The station is also equipped with UPS to prevent the failure of electricity power. This backup link system is designed as automatically switching in case of ground link interrupted. On the other hand, two real-time seismic sub-network are deployed stand alone at Hualein (East coast of Taiwan) and Tainan (south Taiwan) stations separately. The sub-network only manipulates real-time seismic data of nearby stations to shorten the procession time. The configuration and function of sub-network can be monitored and changed by Taipei center through computer link. Results from sub-network can be sent to Taipei center simultaneously. The collective use of these redundant systems significantly improves the capability and reliability of seismic emergency response. It will provide more robust foundation to develop earthquake early warning system. To safeguard train transportation from a disaster earthquake, the CWB assists Taiwan Railway Administration (TRA) to establish a seismic alert system including 44 3-component accelerographs along the track of the round-the-island Taiwan railway system. The configuration of the system is similar to the use of sub-network of CWB. It becomes the third backup of earthquake report system. In addition, ground vibration of a TRA instrument exceeds 180 gals, the power of the railway will be automatically cut-off to slow down the nearby train.

  1. Preservice Primary Teachers' Geometric Thinking: Is Pre-Tertiary Mathematics Education Building Sufficiently Strong Foundations?

    Science.gov (United States)

    Hourigan, Mairéad; Leavy, Aisling M.

    2017-01-01

    Teacher knowledge is a critical focus of educational research in light of the potential impact of teacher knowledge on student learning. The dearth of research exploring entry-level preservice teachers' geometric knowledge poses an onerous challenge for mathematics educators in initial teacher education (ITE) when designing experiences that…

  2. Survey of strong motion earthquake effects on thermal power plants in California with emphasis on piping systems. Volume 2, Appendices

    Energy Technology Data Exchange (ETDEWEB)

    Stevenson, J.D. [Stevenson and Associates, Cleveland, OH (United States)

    1995-11-01

    Volume 2 of the ``Survey of Strong Motion Earthquake Effects on Thermal Power Plants in California with Emphasis on Piping Systems`` contains Appendices which detail the detail design and seismic response of several power plants subjected to strong motion earthquakes. The particular plants considered include the Ormond Beach, Long Beach and Seal Beach, Burbank, El Centro, Glendale, Humboldt Bay, Kem Valley, Pasadena and Valley power plants. Included is a typical power plant piping specification and photographs of typical power plant piping specification and photographs of typical piping and support installations for the plants surveyed. Detailed piping support spacing data are also included.

  3. Spin time-relaxation within strongly coupled paramagnetic systems exhibiting paramagnetic-ferrimagnetic transitions

    CERN Document Server

    Chahid, M

    2000-01-01

    The purpose of the present work is a quantitative study of the spin time relaxation within superweak ferrimagnetic materials exhibiting a paramagnetic-ferrimagnetic transition, when the temperature is changed from an initial value T sub i to a final one T sub f very close to the critical temperature T sub c. From a magnetic point of view, the material under investigation is considered to be made of two strongly coupled paramagnetic sublattices of respective moments phi (cursive,open) Greek and psi. Calculations are made within a Landau mean-field theory, whose free energy involves, in addition to quadratic and quartic terms in both moments phi (cursive,open) Greek and psi, a lowest-order coupling - Cphi (cursive,open) Greek psi, where C<0 stands for the coupling constant measuring the interaction between the two sublattices. We first determine the time dependence of the shifts of the order parameters delta phi (cursive,open) Greek and delta psi from the equilibrium state. We find that this time dependence ...

  4. Impurity self-energy in the strongly-correlated Bose systems

    Science.gov (United States)

    Panochko, Galyna; Pastukhov, Volodymyr; Vakarchuk, Ivan

    2018-02-01

    We proposed the nonperturbative scheme for the calculation of the impurity spectrum in the Bose system at zero temperature. The method is based on the path-integral formulation and describes an impurity as a zero-density ideal Fermi gas interacting with Bose system for which the action is written in terms of density fluctuations. On the example of the 3He atom immersed in the liquid helium-4 a good consistency with experimental data and results of Monte Carlo simulations is shown.

  5. Investigation of energy spectrum structure in a system atom + strong external electromagnetic field

    International Nuclear Information System (INIS)

    Volkova, E.A.; Popov, A.M.; Tikhonova, O.V.

    1996-01-01

    Method of direct numerical integration of nonstationary Schroedinger equation is used for investigation into dynamics of quantum system with short-range potential under the cooperative effect of high-frequency electromagnetic field with super atomic value of intensity and low-frequency field with low radiation intensity

  6. Perennialism in the Nigerian educational system | Oyelade ...

    African Journals Online (AJOL)

    It was observed that the 6-3-3-4 education has placed too much emphasis on scientific and vocational development, and little emphasis on the cultivation of rational and moral development, which could be got from liberal education. It is therefore suggested that the core subjects of the 6-3-3-4 system should include more ...

  7. Rethinking Rwandan Higher Education Assessment System and ...

    African Journals Online (AJOL)

    In recent years, there have been increasing critiques leveled against Rwandan higher education for the quality of its graduates and various attempts have been made to address the problem. It is argued here that the role played by assessment in Rwandan higher education system has not been given sufficient attention in ...

  8. Going interdisciplinary in Uganda's education system | Namusisi ...

    African Journals Online (AJOL)

    This study presents the relevance of interdisciplinary education, the crisis in which Uganda's education system is, where specialisation is at its peak. It analyses the form of the present curriculum, which leaves the learner in state of dilemma. The author again shows the need for interdisciplinarity, tries to find out whether ...

  9. Wave failure at strong coupling in intracellular C a2 + signaling system with clustered channels

    Science.gov (United States)

    Li, Xiang; Wu, Yuning; Gao, Xuejuan; Cai, Meichun; Shuai, Jianwei

    2018-01-01

    As an important intracellular signal, C a2 + ions control diverse cellular functions. In this paper, we discuss the C a2 + signaling with a two-dimensional model in which the inositol 1,4,5-trisphosphate (I P3 ) receptor channels are distributed in clusters on the endoplasmic reticulum membrane. The wave failure at large C a2 + diffusion coupling is discussed in detail in the model. We show that with varying model parameters the wave failure is a robust behavior with either deterministic or stochastic channel dynamics. We suggest that the wave failure should be a general behavior in inhomogeneous diffusing systems with clustered excitable regions and may occur in biological C a2 + signaling systems.

  10. Theory of heavy-fermion compounds theory of strongly correlated Fermi-systems

    CERN Document Server

    Amusia, Miron Ya; Shaginyan, Vasily R; Stephanovich, Vladimir A

    2015-01-01

    This book explains modern and interesting physics in heavy-fermion (HF) compounds to graduate students and researchers in condensed matter physics. It presents a theory of heavy-fermion (HF) compounds such as HF metals, quantum spin liquids, quasicrystals and two-dimensional Fermi systems. The basic low-temperature properties and the scaling behavior of the compounds are described within the framework of the theory of fermion condensation quantum phase transition (FCQPT). Upon reading the book, the reader finds that HF compounds with quite different microscopic nature exhibit the same non-Fermi liquid behavior, while the data collected on very different HF systems have a universal scaling behavior, and these compounds are unexpectedly uniform despite their diversity. For the reader's convenience, the analysis of compounds is carried out in the context of salient experimental results. The numerous calculations of the non-Fermi liquid behavior, thermodynamic, relaxation and transport properties, being in good...

  11. Nonlinear response of the quantum Hall system to a strong electromagnetic radiation

    International Nuclear Information System (INIS)

    Avetissian, H.K.; Mkrtchian, G.F.

    2016-01-01

    We study nonlinear response of a quantum Hall system in semiconductor-hetero-structures via third harmonic generation process and nonlinear Faraday effect. We demonstrate that Faraday rotation angle and third harmonic radiation intensity have a characteristic Hall plateaus feature. These nonlinear effects remain robust against the significant broadening of Landau levels. We predict realization of an experiment through the observation of the third harmonic signal and Faraday rotation angle, which are within the experimental feasibility. - Highlights: • Nonlinear optical response of a quantum Hall system has specific plateaus feature. • This effect remains robust against the significant broadening of Landau levels. • It can be observed via the third harmonic signal and the nonlinear Faraday effect.

  12. Your money or your life: strong medicine for America's health care system

    National Research Council Canada - National Science Library

    Cutler, David M

    2004-01-01

    ...; doctors who are frustrated by in­ surance restrictions; more than 40 million people without health in­ surance. "Medical care is in crisis," we are repeatedly told, and so it is. Barely one in five Americans thinks the medical system works well. 1 For all the talk about crisis, however, health reform has proven painfully difficult. President Bill Cl...

  13. Global Stability and Dynamics of Strongly Nonlinear Systems Using Koopman Operator Theory

    Science.gov (United States)

    2017-03-01

    scale dynamics systems. Perhaps the most far reaching impact of this DRI will be a contribution that was not planned in the original proposal. This... contribution has to do with the generalization of Koopman decompositions using a fractional calculus perspective on complexity. By using a combination of... influenced by an external environment in which long-term memory is introduced. 15. SUBJECT TERMS nonlinear dynamics, spectral decompositions, fractional

  14. Method of correlation operators in the theory of a system of particles with strong interactions

    International Nuclear Information System (INIS)

    Kuz'min, Y.M.

    1985-01-01

    A similarity transformation of the density matrix is performed with the help of the correlation operator. This does not change the value of the partition function. A method of calculating the transformed partition function with the help of a finite translation operator is given. A general system of coupled equations is obtained from which the matrix elements of correlation operators of increasing order can be found

  15. Robustness of strong solutions to the compressible Navier-Stokes system

    Czech Academy of Sciences Publication Activity Database

    Bella, P.; Feireisl, Eduard; Jin, B.J.; Novotný, A.

    2015-01-01

    Roč. 362, 1-2 (2015), s. 281-303 ISSN 0025-5831 EU Projects: European Commission(XE) 320078 - MATHEF Institutional support: RVO:67985840 Keywords : compressible Navier-Stokes system * smooth solution * stability Subject RIV: BA - General Mathematics Impact factor: 1.366, year: 2015 http://link.springer.com/article/10.1007%2Fs00208-014-1119-2

  16. Role of strongly interacting additives in tuning the structure and properties of polymer systems

    Science.gov (United States)

    Daga, Vikram Kumar

    Block copolymer (BCP) nanocomposites are an important class of hybrid materials in which the BCP guides the spatial location and the periodic assembly of the additives. High loadings of well-dispersed nanofillers are generally important for many applications including mechanical reinforcing of polymers. In particular the composites shown in this work might find use as etch masks in nanolithography, or for enabling various phase selective reactions for new materials development. This work explores the use of hydrogen bonding interactions between various additives (such as homopolymers and non-polymeric additives) and small, disordered BCPs to cause the formation of well-ordered morphologies with small domains. A detailed study of the organization of homopolymer chains and the evolution of structure during the process of ordering is performed. The results demonstrate that by tuning the selective interaction of the additive with the incorporating phase of the BCP, composites with significantly high loadings of additives can be formed while maintaining order in the BCP morphology. The possibility of high and selective loading of additives in one of the phases of the ordered BCP composite opens new avenues due to high degree of functionalization and the proximity of the additives within the incorporating phase. This aspect is utilized in one case for the formation of a network structure between adjoining additive cores to derive mesoporous inorganic materials with their structures templated by the BCP. The concept of additive-driven assembly is extended to formulate BCPadditive blends with an ability to undergo photo-induced ordering. Underlying this strategy is the ability to transition a weakly interacting additive to its strongly interacting form. This strategy provides an on-demand, non-intrusive route for formation of well-ordered nanostructures in arbitrarily defined regions of an otherwise disordered material. The second area explored in this dissertation deals

  17. Driver education program status report : software system.

    Science.gov (United States)

    1981-01-01

    In April of 1980, a joint decision between Research Council personnel and representatives of the Department of Education was reached, and a project was undertaken by the Research Council to provide a software system to process the annual Driver Educa...

  18. System safety education focused on industrial engineering

    Science.gov (United States)

    Johnston, W. L.; Morris, R. S.

    1971-01-01

    An educational program, designed to train students with the specific skills needed to become safety specialists, is described. The discussion concentrates on application, selection, and utilization of various system safety analytical approaches. Emphasis is also placed on the management of a system safety program, its relationship with other disciplines, and new developments and applications of system safety techniques.

  19. Management Information Systems: Applications to Educational Administration.

    Science.gov (United States)

    Witkin, Belle Ruth

    An orientation to management information systems (MIS) is offered which presents information about MIS in the context of public education and suggests some considerations that should be taken into account in designing and operating such systems. MIS is defined as a set of operating procedures that act as a control system to automatically provide…

  20. Educational Interpretations of General Systems Theory.

    Science.gov (United States)

    Hug, William E.; King, James E.

    This chapter discusses General Systems Theory as it applies to education, classrooms, innovations, and instructional design. The principles of equifinality, open and closed systems, the individual as the key system, hierarchical structures, optimization, stability, cooperation, and competition are discussed, and their relationship to instructional…

  1. Electronic consultation system demonstrates educational benefit for primary care providers.

    Science.gov (United States)

    Kwok, Jonas; Olayiwola, J Nwando; Knox, Margae; Murphy, Elizabeth J; Tuot, Delphine S

    2017-01-01

    Background Electronic consultation systems allow primary care providers to receive timely speciality expertise via iterative electronic communication. The use of such systems is expanding across the USA with well-documented high levels of user satisfaction. We characterise the educational impact for primary care providers of a long-standing integrated electronic consultation and referral system. Methods Primary care providers' perceptions of the educational value inherent to electronic consultation system communication and the impact on their ability to manage common speciality clinical conditions and questions were examined by electronic survey using five-point Likert scales. Differences in primary care providers' perceptions were examined overall and by primary care providers' speciality, provider type and years of experience. Results Among 221 primary care provider participants (35% response rate), 83.9% agreed or strongly agreed that the integrated electronic consultation and referral system provided educational value. There were no significant differences in educational value reported by provider type (attending physician, mid-level provider, or trainee physician), primary care providers' speciality, or years of experience. Perceived benefit of the electronic consultation and referral system in clinical management appeared stronger for laboratory-based conditions (i.e. subclinical hypothyroidism) than more diffuse conditions (i.e. abdominal pain). Nurse practitioners/physician assistants and trainee physicians were more likely to report improved abilities to manage specific clinical conditions when using the electronic consultation and/or referral system than were attending physicians, as were primary care providers with ≤10 years experience, versus those with >20 years of experience. Conclusions Primary care providers report overwhelmingly positive perceptions of the educational value of an integrated electronic consultation and referral system. Nurse

  2. Conductivity of strongly pumped superconductors. An electron-phonon system far from equilibrium

    Energy Technology Data Exchange (ETDEWEB)

    Krull, Holger

    2015-01-29

    The study of nonequilibrium physics is of great interest, because one can capture novel phenomena and properties which are hidden at equilibrium, e.g., one can study relaxation processes. A common way to study the nonequilibrium dynamics of a sample is a pump-probe experiment. In a pump probe experiment an intense laser pulse, the so called pump pulse, excites the sample and takes it out of equilibrium. After a certain delay time a second pulse, the probe pulse, measures the actual state of the sample. In this thesis, we theoretically study the pump-probe response of superconductors. On the one hand we are interest in the effect of a pump pulse and on the other hand we want to provide the pump-probe response, such that experimental measurement can be easily interpreted. In order to do this, we use the density matrix formalism to compute the pump-probe response of the system. In the density matrix formalism equations of motion are set up for expectation values of interest. In order to study the dynamics induced by a pump pulse, we compute the temporal evolution of the quasiparticle densities and the mean phonon amplitude. We find that the induced dynamics of the system depends on characteristics of the pump pulse. For short pulses, the system is pushed into the nonadiabatic regime. In this regime, the order parameter is lowered during the pump pulse and shows a 1/(√(t))-decaying oscillation afterwards. In addition, coherent phonons are generated, which is resonantly enhanced if the frequency of the order parameter oscillation is equal to the phonon frequency. For long pulses, the system is pushed into the adiabatic regime. In this regime, the order parameter is lowered during the pulse and remains almost constant afterwards. Further, there is almost no generation of coherent phonons. For the pump-probe response we compute the conductivity induced by the probe pulse. The conductivity is a typical observable in real pump-probe experiments. Hence, it is possible to

  3. Conductivity of strongly pumped superconductors. An electron-phonon system far from equilibrium

    International Nuclear Information System (INIS)

    Krull, Holger

    2015-01-01

    The study of nonequilibrium physics is of great interest, because one can capture novel phenomena and properties which are hidden at equilibrium, e.g., one can study relaxation processes. A common way to study the nonequilibrium dynamics of a sample is a pump-probe experiment. In a pump probe experiment an intense laser pulse, the so called pump pulse, excites the sample and takes it out of equilibrium. After a certain delay time a second pulse, the probe pulse, measures the actual state of the sample. In this thesis, we theoretically study the pump-probe response of superconductors. On the one hand we are interest in the effect of a pump pulse and on the other hand we want to provide the pump-probe response, such that experimental measurement can be easily interpreted. In order to do this, we use the density matrix formalism to compute the pump-probe response of the system. In the density matrix formalism equations of motion are set up for expectation values of interest. In order to study the dynamics induced by a pump pulse, we compute the temporal evolution of the quasiparticle densities and the mean phonon amplitude. We find that the induced dynamics of the system depends on characteristics of the pump pulse. For short pulses, the system is pushed into the nonadiabatic regime. In this regime, the order parameter is lowered during the pump pulse and shows a 1/(√(t))-decaying oscillation afterwards. In addition, coherent phonons are generated, which is resonantly enhanced if the frequency of the order parameter oscillation is equal to the phonon frequency. For long pulses, the system is pushed into the adiabatic regime. In this regime, the order parameter is lowered during the pulse and remains almost constant afterwards. Further, there is almost no generation of coherent phonons. For the pump-probe response we compute the conductivity induced by the probe pulse. The conductivity is a typical observable in real pump-probe experiments. Hence, it is possible to

  4. Relaxation of strongly coupled Coulomb systems after rapid changes of the interaction potential

    CERN Document Server

    Gericke, D O; Semkat, D; Bonitz, M; Kremp, D

    2003-01-01

    The relaxation of charged particle systems after sudden changes of the pair interaction strength is investigated. As examples, we show the results for plasmas after ionization and after a rapid change of screening. Comparisons are made between molecular dynamics simulation and a kinetic description based on the Kadanoff-Baym equations. We found the latter very sensitive to the way the scattering cross section is treated. We also predict the new equilibrium state requiring only conservation of energy. In this case, the correlation energy is computed using the hypernetted chain approximation.

  5. EDUCATION SYSTEM OF UKRAINE AS AN OBJECT OF INFORMATIZATION: STRUCTURE OF THE EDUCATION SYSTEM

    Directory of Open Access Journals (Sweden)

    Anatolii Yu. Pylypchuk

    2010-08-01

    Full Text Available The structure of an education system and kinds of activities which are being carried out in it, belongs to the major parameters of the education system characterizing it as an object of informatization. In the paper there is considered the structure of the education system in Ukraine, its components and their dependence. These researches as well as the researches of kinds of activity are necessary for the creation of effective systems of informatization both separate objects, and an education system as a whole.

  6. Integrated Information System for Higher Education Qualifications

    OpenAIRE

    Catalin Ionut SILVESTRU; Codrin-Florentin NISIOIU; Bogdan GHILIC MICU; Ramona Camelia BERE; Adina-Maria DAN; Robert MIHAILA

    2012-01-01

    In the present article we aim to study thoroughly and detail aspects related to architectures specific for e-learning and management of human resources training interconnected to management of qualifications. In addition, we take into consideration combining e-learning architectures with software in an e-learning system interconnected with the National Registry of Qualifications of Higher Education, in view of developing and information system that correlates educational supply from higher ed...

  7. Final Report - Composite Fermion Approach to Strongly Interacting Quasi Two Dimensional Electron Gas Systems

    Energy Technology Data Exchange (ETDEWEB)

    Quinn, John

    2009-11-30

    Work related to this project introduced the idea of an effective monopole strength Q* that acted as the effective angular momentum of the lowest shell of composite Fermions (CF). This allowed us to predict the angular momentum of the lowest band of energy states for any value of the applied magnetic field simply by determining N{sub QP} the number of quasielectrons (QE) or quasiholes (QH) in a partially filled CF shell and adding angular momenta of the N{sub QP} Fermions excitations. The approach reported treated the filled CF level as a vacuum state which could support QE and QH excitations. Numerical diagonalization of small systems allowed us to determine the angular momenta, the energy, and the pair interaction energies of these elementary excitations. The spectra of low energy states could then be evaluated in a Fermi liquid-like picture, treating the much smaller number of quasiparticles and their interactions instead of the larger system of N electrons with Coulomb interactions.

  8. Dynamic Systems Modeling in Educational System Design & Policy

    Science.gov (United States)

    Groff, Jennifer Sterling

    2013-01-01

    Over the last several hundred years, local and national educational systems have evolved from relatively simple systems to incredibly complex, interdependent, policy-laden structures, to which many question their value, effectiveness, and direction they are headed. System Dynamics is a field of analysis used to guide policy and system design in…

  9. Strong solutions to a Navier–Stokes–Lamé system on a domain with a non-flat boundary

    International Nuclear Information System (INIS)

    Kukavica, Igor; Ziane, Mohammed; Tuffaha, Amjad

    2011-01-01

    In this paper, we consider a Navier–Stokes–Lamé system modeling a fluid–structure interaction. For a general domain, we establish local well-posedness for strong solutions in which initial velocity u 0 belongs to H 1 while the initial data (w 0 , w 1 ) for the elasticity equation belongs to (H 3/2+k , H 1/2+k ) for any k in (0, k 0 ) where k 0 is an explicit positive constant

  10. Relative entropies, suitable weak solutions, and weak-strong uniqueness for the compressible Navier–Stokes system

    Czech Academy of Sciences Publication Activity Database

    Feireisl, Eduard; Jin, B.J.; Novotný, A.

    2012-01-01

    Roč. 14, č. 4 (2012), s. 717-730 ISSN 1422-6928 R&D Projects: GA ČR GA201/09/0917 Institutional research plan: CEZ:AV0Z10190503 Keywords : suitable weak solution * weak-strong uniqueness * compressible Navier-Stokes system Subject RIV: BA - General Mathematics Impact factor: 1.415, year: 2012 http://link.springer.com/article/10.1007%2Fs00021-011-0091-9

  11. A model-independent description of few-body system with strong interaction

    International Nuclear Information System (INIS)

    Simenog, I.V.

    1985-01-01

    In this contribution, the authors discuss the formulation of equations that provide model-independent description of systems of three and more nucleons irrespective of the details of the interaction, substantiate the approach, estimate the correction terms with respect to the force range, and give basic qualitative results obtained by means of the model-independent procedure. They consider three nucleons in the doublet state (spin S=I/2) taking into account only S-interaction. The elastic nd-scattering amplitude may be found from the model-independent equations that follow from the Faddeev equations in the short-range-force limit. They note that the solutions of several model-independent equations and basic results obtained with the use of this approach may serve both as a standard solution and starting point in the discussion of various conceptions concerning the details of nuclear interactions

  12. FCaZm intelligent recognition system for locating areas prone to strong earthquakes in the Andean and Caucasian mountain belts

    Science.gov (United States)

    Gvishiani, A. D.; Dzeboev, B. A.; Agayan, S. M.

    2016-07-01

    The fuzzy clustering and zoning method (FCAZm) of systems analysis is suggested for recognizing the areas of the probable generation of the epicenters of significant, strong, and the strongest earthquakes. FCAZm is a modified version of the previous FCAZ algorithmic system, which is advanced by the creation of the blocks of artificial intelligence that develop the system-forming algorithms. FCAZm has been applied for recognizing areas where the epicenters of the strongest ( M ≥ 73/4) earthquakes within the Andes mountain belt in the South America and significant earthquakes ( M ≥ 5) in the Caucasus can emerge. The reliability of the obtained results was assessed by the seismic-history type control experiments. The recognized highly seismic zones were compared with the ones previously recognized by the EPA method and by the initial version of the FCAZ system. The modified FCAZm system enabled us to pass from simple pattern recognition in the problem of recognizing the locations of the probable emergence of strong earthquakes to systems analysis. In particular, using FCAZm we managed to uniquely recognize a subsystem of highly seismically active zones from the nonempty complement using the exact boundary.

  13. Strongly coupled coulomb systems of dust particles in traps and plasmas

    International Nuclear Information System (INIS)

    Petrov, O.F.; Fortov, V.E.

    2011-01-01

    Complete text of publication follows. After first experimental observations of ordered structures of dust particles in rf and dc gas discharges, similar dusty plasma structures are frequently considered as a macroscopic physical model of coupled Coulomb systems (SCCS), which can visually be observed. Using such structures of charged dust particles, one can investigate the processes of phase transitions, waves, and instabilities on kinetic levels. One of the central problems associated with experimental studies of stable SCCS is that of ensuring the levitation of charged particles. The levitation of dust particles in gas discharges is provided by the interaction of the particle charge with electric field. For confinement and investigation of SCCS of charged dust particles, we propose to use a trap based on the known possibility of the levitation of diamagnetic bodies in a nonuniform steady-state magnetic field. An experimental setup is described, which is capable of forming and confining clusters of charge graphite particles sized 100 to 300 μm in magnetic field B∼1 T and |V-barB| ∼10 T/cm. It is inferred that it will be possible to form stable 3d dust structures containing several thousand particles under terrestrial conditions by using more intensive magnetic fields B > 10 T. Less intensive magnetic fields (B ∼ 0.1 T, |V-barB| ∼ 0.1 T/cm) will be required for studying analogous structures under microgravity conditions. The superhigh charging of dust particles under direct stimulation by an electron beam is experimentally investigated. The energy of beam electrons amounts to 25 keV, with the typical diameter of dust particles employed in the experiment of 100 μm. The charge acquired by a dust particle amounts to 5·10 7 electron charges, which is more than two orders of magnitude higher than the values of the charge of dust particles in gas discharges. A technique for analyzing the pair interaction forces between particles in nonideal dissipative systems

  14. Competing orders in strongly correlated systems. Dirac materials and iron-based superconductors

    Energy Technology Data Exchange (ETDEWEB)

    Classen, Laura

    2016-11-04

    In this work we address the collective phenomena appearing in interacting fermion systems due to the competition of distinct orders at the example of Dirac materials and iron-based superconductors. On the one hand we determine leading ordering tendencies in an unbiased way, when Fermi liquid instabilities are expected simultaneously in the particle-particle and particle-hole channel. In this context we analyze the impact of electron-phonon interactions on the many-body instabilities of electrons on the honeycomb lattice. Furthermore we investigate the interplay between superconductivity, magnetism and orbital order in five-pocket iron-based superconductors including the full orbital composition of low-energy excitations. On the other hand we study how the close proximity of different phases affects the structure of the phase diagram and the nature of transitions, as well as the corresponding quantum multicritical behavior. To this end we consider the semimetal-insulator transitions to an antiferromagnetic and a staggered-density state of low-energy Dirac fermions. To account for the decisive role of interactions and the various degrees of freedom in these models, modern renormalization group techniques are applied.

  15. Strongly Coupled Systems: From Quantum Antiferromagnets To Unified Models For Superconductors

    CERN Document Server

    Chudnovsky, V

    2002-01-01

    I discuss the significance of the antiferromagnetic Heisenberg model (AFHM) in both high-energy and condensed-matter physics, and proceed to describe an efficient cluster algorithm used to simulate the AFHM. This is one of two algorithms with which my collaborators and I were able to obtain numerical results that definitively confirm that chiral perturbation theory, corrected for cutoff effects in the AFHM, leads to a correct field-theoretical description of the low- temperature behavior of the spin correlation length in various spin representations S. Using a finite-size-scaling technique, we explored correlation lengths of up to 105 lattice spacings for spins S = 1 and 5/2. We show how the recent prediction of cutoff effects by P. Hasenfratz is approached for moderate correlation lengths, and smoothly connects with other approaches to modeling the AFHM at smaller correlation lengths. I also simulate and discuss classical antiferromagnetic systems with simultaneous SO(M) and SO( N) symmetries, which have bee...

  16. Strongly Coupled Systems From Quantum Antiferromagnets To Unified Models For Superconductors

    CERN Document Server

    Chudnovsky, V

    2002-01-01

    I discuss the significance of the antiferromagnetic Heisenberg model (AFHM) in both high-energy and condensed-matter physics, and proceed to describe an efficient cluster algorithm used to simulate the AFHM. This is one of two algorithms with which my collaborators and I were able to obtain numerical results that definitively confirm that chiral perturbation theory, corrected for cutoff effects in the AFHM, leads to a correct field-theoretical description of the low- temperature behavior of the spin correlation length in various spin representations S. Using a finite-size-scaling technique, we explored correlation lengths of up to 105 lattice spacings for spins S = 1 and 5/2. We show how the recent prediction of cutoff effects by P. Hasenfratz is approached for moderate correlation lengths, and smoothly connects with other approaches to modeling the AFHM at smaller correlation lengths. I also simulate and discuss classical antiferromagnetic systems with simultaneous SO(M) and SO( N) symmetries, which have bee...

  17. Energy diffusion in strongly driven quantum chaotic systems: the role of correlations of the matrix elements

    International Nuclear Information System (INIS)

    Elyutin, P V; Rubtsov, A N

    2008-01-01

    The energy evolution of a quantum chaotic system under the perturbation that harmonically depends on time is studied for the case of large perturbation, in which the rate of transition calculated from the Fermi golden rule (FGR) is about or exceeds the frequency of perturbation. For this case, the models of the Hamiltonian with random non-correlated matrix elements demonstrate that the energy evolution retains its diffusive character, but the rate of diffusion increases slower than the square of the magnitude of perturbation, thus destroying the quantum-classical correspondence for the energy diffusion and the energy absorption in the classical limit ℎ → 0. The numerical calculation carried out for a model built from the first principles (the quantum analog of the Pullen-Edmonds oscillator) demonstrates that the evolving energy distribution, apart from the diffusive component, contains a ballistic one with the energy dispersion that is proportional to the square of time. This component originates from the chains of matrix elements with correlated signs and vanishes if the signs of matrix elements are randomized. The presence of the ballistic component formally extends the applicability of the FGR to the non-perturbative domain and restores the quantum-classical correspondence

  18. Some issues linked to the description of systems in strong interaction

    International Nuclear Information System (INIS)

    Theussl, L.

    2001-06-01

    In the first part of this work we have dealt with some issues that are relevant in the area of nucleonic resonances within different constituent quark models. In this context we have concentrated on the theoretical description of Pi and Nu decays for N and Delta resonances. The results obtained point to the necessity of a more microscopic description of the dynamics which is at the same time responsible for the binding of quarks inside baryons and the decay of the latter ones. In the second part we have contributed to the study of crossed two-boson exchanges in the Bethe-Salpeter equation as well as to the investigation of different three-dimensional approaches that follow from the Bethe-Salpeter equation in a certain non-relativistic reduction scheme. These one include in particular an equation whose interaction depends on the total energy of the system. It was shown that such an equation is able to account for a certain number of properties of Bethe-Salpeter equation, in particular, that there also arise abnormal solutions in such an approach. (author)

  19. Vocational Education and the Binary Higher Education System in the Netherlands: Higher Education Symbiosis or Vocational Education Dichotomy?

    Science.gov (United States)

    van Houten, Maarten Matheus

    2018-01-01

    The Netherlands has a binary higher education system in which academic education and higher professional education at EQF levels 5-8 co-exist. There is also secondary vocational education at EQF levels 1 up to 4. In this paper, I analyse policy documents resulting from the Bologna Process and argue that under neo-liberal conditions, higher…

  20. Mapping a classification system to architectural education

    DEFF Research Database (Denmark)

    Hermund, Anders; Klint, Lars; Rostrup, Nicolai

    2015-01-01

    This paper examines to what extent a new classification system, Cuneco Classification System, CCS, proves useful in the education of architects, and to what degree the aim of an architectural education, rather based on an arts and crafts approach than a polytechnic approach, benefits from...... the distinct terminology of the classification system. The method used to examine the relationship between education, practice and the CCS bifurcates in a quantitative and a qualitative exploration: Quantitative comparison of the curriculum with the students’ own descriptions of their studies through...... a questionnaire survey among 88 students in graduate school. Qualitative interviews with a handful of practicing architects, to be able to cross check the relevance of the education with the profession. The examination indicates the need of a new definition, in addition to the CCS’s scale, covering the earliest...

  1. Integrated Information System for Higher Education Qualifications

    Directory of Open Access Journals (Sweden)

    Catalin Ionut SILVESTRU

    2012-10-01

    Full Text Available In the present article we aim to study thoroughly and detail aspects related to architectures specific for e-learning and management of human resources training interconnected to management of qualifications. In addition, we take into consideration combining e-learning architectures with software in an e-learning system interconnected with the National Registry of Qualifications of Higher Education, in view of developing and information system that correlates educational supply from higher education from Romania with labor market demands through qualifications. The scientific endeavor consists of original architectural solutions to integrate data, systems, processes, services from various sources and to use them in the proposed system. The practical result of the scientific endeavor is represented by design of architectures required for developing an e-learning system interconnected with the National Registry of Qualifications from Romania, which involve in first stage the qualifications provided by higher education. The proposed innovative solution consists in the fact that the proposed information system combines the advantages of content management system (CMS with learning content management system (LCMS and with reusable learning objects (RLO. Thus, the architecture proposed in the research ensures the integration of a content management system with a portal for information, guidance and support in making a professional project. The integration enables correlation of competences with content areas and specific items from various teaching subjects, thus evaluating the usefulness for this registry from learning/educational perspective. Using the proposed information system in enables correlation among qualifications, content of educational program and continuous self-evaluation opportunities, which facilitate monitoring of progress and adjustment of learning content.

  2. Ideas for Changing Educational Systems, Educational Policy and Schools

    Science.gov (United States)

    Thomson, Pat; Lingard, Bob; Wrigley, Terry

    2012-01-01

    This paper argues the need for new ideas to assist in the creation of a new social imaginary post-neo-liberalism to frame rethought educational systems, policy and schooling. This is an attempt to reclaim progressive, democratic and social justice purposes for schooling well beyond dominant human capital renditions. While acknowledging the…

  3. Performance and analysis of wireless power charging system from room temperature to HTS magnet via strong resonance coupling method

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Y. D.; Lee, S. Y.; Lee, T. W.; Kim, J. S. [Suwon Science College, Suwon (Korea, Republic of); Lee, C. Y. [Korea Railroad Institute, Uiwang (Korea, Republic of)

    2016-03-15

    The technology of supplying the electric power by wireless power transfer (WPT) is expected for the next generation power feeding system since it can supply the power to portable devices without any connectors through large air gap. As such a technology based on strongly coupled electromagnetic resonators is possible to deliver the large power and recharge them seamlessly; it has been considered as a noble option to wireless power charging system in the various power applications. Recently, various HTS wires have now been manufactured for demonstrations of transmission cables, motors, MAGLEV, and other electrical power components. However, since the HTS magnets have a lower index n value intrinsically, they are required to be charged from external power system through leads or internal power system. The portable area is limited as well as the cryogen system is bulkier. Thus, we proposed a novel design of wireless power charging system for superconducting HTS magnet (WPC4SM) based on resonance coupling method. As the novel system makes possible a wireless power charging using copper resonance coupled coils, it enables to portable charging conveniently in the superconducting applications. This paper presented the conceptual design and operating characteristics of WPC4SM using different shapes' copper resonance coil. The proposed system consists of four components; RF generator of 370 kHz, copper resonance coupling coils, impedance matching (IM) subsystem and HTS magnet including rectifier system.

  4. Strong coupling effects during X-pulse CPMG experiments recorded on heteronuclear ABX spin systems: artifacts and a simple solution

    International Nuclear Information System (INIS)

    Vallurupalli, Pramodh; Scott, Lincoln; Williamson, James R.; Kay, Lewis E.

    2007-01-01

    Simulation and experiment have been used to establish that significant artifacts can be generated in X-pulse CPMG relaxation dispersion experiments recorded on heteronuclear ABX spin-systems, such as 13 C i - 13 C j - 1 H, where 13 C i and 13 C j are strongly coupled. A qualitative explanation of the origin of these artifacts is presented along with a simple method to significantly reduce them. An application to the measurement of 1 H CPMG relaxation dispersion profiles in an HIV-2 TAR RNA molecule where all ribose sugars are protonated at the 2' position, deuterated at all other sugar positions and 13 C labeled at all sugar carbons is presented to illustrate the problems that strong 13 C- 13 C coupling introduces and a simple solution is proposed

  5. Flutter-by Interactive Butterfly Using interactivity to excite and educate children about butterflies and the National Museum of Play at The Strong's Dancing Wings Butterfly Garden

    Science.gov (United States)

    Powers, Lydia

    The National Museum of Play at The Strong's Dancing Wings Butterfly Garden is a tropical rainforest that allows visitors to step into the world of butterflies, but lacks a more comprehensive educational element to teach visitors additional information about butterflies. Flutter-by Interactive Butterfly is a thesis project designed to enhance younger visitors' experience of the Dancing Wings Butterfly Garden with an interactive educational application that aligns with The Strong's mission of encouraging learning, creativity, and discovery. This was accomplished through a series of fun and educational games and animations, designed for use as a kiosk outside the garden and as a part of The Strong's website. Content, planning, and organization of this project has been completed through research and observation of the garden in the following areas: its visitors, butterflies, best usability practices for children, and game elements that educate and engage children. Flutter-by Interactive Butterfly teaches users about the butterfly's life cycle, anatomy, and characteristics as well as their life in the Dancing Wings Butterfly Garden. Through the use of the design programs Adobe Illustrator, Flash, and After Effects; the programming language ActionScript3.0; a child-friendly user interface and design; audio elements and user takeaways, Flutter-by Interactive Butterfly appeals to children of all ages, interests, and learning styles. The project can be viewed at lydiapowers.com/Thesis/FlutterByButterfly.html

  6. Development of SI Engine Control Education System

    Science.gov (United States)

    Wu, Dongmei; Ogawa, Masatoshi; Ogai, Harutoshi; Kusaka, Jin

    An engine control education system is designed. This system can realize the following functions: it serves to familiarize people with gasoline engine properties and can be applied to carry out engine control simulation, to design engine control logic and to realize engine real-time simulation. In the paper, the structure of this education system is explained. The system is composed of a computer, a high-speed arithmetic processing board, an ECU and an engine test bench. Engine control simulations are carried out, and engine properties are obtained. Therefore this system can assist people in mastering gasoline engine properties. Besides, a real-time simulation system is designed, and PID control real-time simulation is realized. In the future, new control systems can be designed based on the current one. When the engine simulator is connected with engine test bench and ECU, engine real-time simulation can be realized.

  7. Recovery of the Education System in Myanmar

    Directory of Open Access Journals (Sweden)

    Martin Hayden And Richard Martin

    2013-10-01

    Full Text Available Myanmar's education system is in a very weakened state. The physical condition and human resource capacity of the system is poor by any standard, and teachers, whether in schools, colleges or universities, have few opportunities and little incentive for professional development. A process of recovery is getting underway, but it will take years before significant improvements are evident. Major cultural change is required in the style of leadership and management at all levels of government, and there is also a desperate need for more financial resources. This paper documents the current state of the education system in Myanmar and advances three priority areas for immediate attention.

  8. Generalized-active-space pair-density functional theory: an efficient method to study large, strongly correlated, conjugated systems.

    Science.gov (United States)

    Ghosh, Soumen; Cramer, Christopher J; Truhlar, Donald G; Gagliardi, Laura

    2017-04-01

    Predicting ground- and excited-state properties of open-shell organic molecules by electronic structure theory can be challenging because an accurate treatment has to correctly describe both static and dynamic electron correlation. Strongly correlated systems, i.e. , systems with near-degeneracy correlation effects, are particularly troublesome. Multiconfigurational wave function methods based on an active space are adequate in principle, but it is impractical to capture most of the dynamic correlation in these methods for systems characterized by many active electrons. We recently developed a new method called multiconfiguration pair-density functional theory (MC-PDFT), that combines the advantages of wave function theory and density functional theory to provide a more practical treatment of strongly correlated systems. Here we present calculations of the singlet-triplet gaps in oligoacenes ranging from naphthalene to dodecacene. Calculations were performed for unprecedently large orbitally optimized active spaces of 50 electrons in 50 orbitals, and we test a range of active spaces and active space partitions, including four kinds of frontier orbital partitions. We show that MC-PDFT can predict the singlet-triplet splittings for oligoacenes consistent with the best available and much more expensive methods, and indeed MC-PDFT may constitute the benchmark against which those other models should be compared, given the absence of experimental data.

  9. Virtualization Technologies in Information Systems Education

    Science.gov (United States)

    Lunsford, Dale L.

    2009-01-01

    Information systems educators must balance the need to protect the stability, availability, and security of computer laboratories with the learning objectives of various courses. In advanced courses where students need to install, configure, and otherwise manipulate application and operating system settings, this is especially problematic as these…

  10. System safety education focused on flight safety

    Science.gov (United States)

    Holt, E.

    1971-01-01

    The measures necessary for achieving higher levels of system safety are analyzed with an eye toward maintaining the combat capability of the Air Force. Several education courses were provided for personnel involved in safety management. Data include: (1) Flight Safety Officer Course, (2) Advanced Safety Program Management, (3) Fundamentals of System Safety, and (4) Quantitative Methods of Safety Analysis.

  11. Computer Literacy in a Distance Education System

    Science.gov (United States)

    Farajollahi, Mehran; Zandi, Bahman; Sarmadi, Mohamadreza; Keshavarz, Mohsen

    2015-01-01

    In a Distance Education (DE) system, students must be equipped with seven skills of computer (ICDL) usage. This paper aims at investigating the effect of a DE system on the computer literacy of Master of Arts students at Tehran University. The design of this study is quasi-experimental. Pre-test and post-test were used in both control and…

  12. Systemic Gifted Education: A Theoretical Introduction

    Science.gov (United States)

    Ziegler, Albert; Stoeger, Heidrun

    2017-01-01

    Over the past few decades, systemic thinking has gained in popularity in developmental and learning sciences. The trend has, however, shown up in gifted education research only occasionally. The aim of this article is to introduce systemic thinking to the field of giftedness and explore possibilities for its application. In the first part, a…

  13. The computer aided education and training system for accident management

    International Nuclear Information System (INIS)

    Yoneyama, Mitsuru; Kubota, Ryuji; Fujiwara, Tadashi; Sakuma, Hitoshi

    1999-01-01

    The education and training system for Accident Management was developed by the Japanese BWR group and Hitachi Ltd. The education and training system is composed of two systems. One is computer aided instruction (CAI) education system and the education and training system with computer simulations. Both systems are designed to be executed on personal computers. The outlines of the CAI education system and the education and training system with simulator are reported below. These systems provides plant operators and technical support center staff with the effective education and training for accident management. (author)

  14. An Immersive VR System for Sports Education

    Science.gov (United States)

    Song, Peng; Xu, Shuhong; Fong, Wee Teck; Chin, Ching Ling; Chua, Gim Guan; Huang, Zhiyong

    The development of new technologies has undoubtedly promoted the advances of modern education, among which Virtual Reality (VR) technologies have made the education more visually accessible for students. However, classroom education has been the focus of VR applications whereas not much research has been done in promoting sports education using VR technologies. In this paper, an immersive VR system is designed and implemented to create a more intuitive and visual way of teaching tennis. A scalable system architecture is proposed in addition to the hardware setup layout, which can be used for various immersive interactive applications such as architecture walkthroughs, military training simulations, other sports game simulations, interactive theaters, and telepresent exhibitions. Realistic interaction experience is achieved through accurate and robust hybrid tracking technology, while the virtual human opponent is animated in real time using shader-based skin deformation. Potential future extensions are also discussed to improve the teaching/learning experience.

  15. An educational VSAT system for Thailand

    OpenAIRE

    Kunchaicharoenkul, Kanokporn

    1996-01-01

    Very small aperture terminal (VSA T) networks offer great opportunities to combine satellite technology and the needs of education in Thailand. An educational VSAT network for Thailand needs a central hub station in Bangkok and seven remote sites with VSAT equipment. The network supports two way compressed video, voice and data links between the central hub and VSAT sites. This thesis examines rain margin, system availability, VSAT antenna size and transponder power util...

  16. Early childhood programs and the education system.

    Science.gov (United States)

    Beach, Jane; Bertrand, Jane

    2009-12-01

    Policy makers, advocates and experts agree that the current delivery of early childhood development programs is fragmented. Many point to the education system as a better alternative for a more coherent approach that has the necessary infrastructure in place in communities, and is well placed to meet the needs of all young children and their families. In other jurisdictions, early childhood development programs have moved into education. In Canada, provincial and local school authorities are taking on more early childhood programs.

  17. Young and going strong?: A longitudinal study on occupational health among young employees of different educational levels

    NARCIS (Netherlands)

    Akkermans, J.; Brenninkmeijer, V.; Bossche, S.N.J van den; Blonk, R.W.B.; Schaufeli, W.B.

    2013-01-01

    Purpose: The purpose of this paper is to identify job characteristics that determine young employees' wellbeing, health, and performance, and to compare educational groups. Design/methodology/approach: Using the job demands-resources (JD-R) model and 2-wave longitudinal data (n=1,284), the paper

  18. National Identity in Educational System of Iran

    Directory of Open Access Journals (Sweden)

    Madi Loghmannia

    2010-06-01

    Full Text Available Identity is one the most significant discussions in contemporary world. In every society, a need, sense of dependency and tendency to national identity is inevitable. As educational system in all countries has the biggest power and humanistic capital, it is one the best tools for reinforcement and consistency of national identity and the curriculums have crucial role in national identity formation. As mentioned, the main aim of this article is to study the role of national identity in the educational system. To do so, first national identity will be discussed comparatively in Iran and other countries and later the reasons of its weakness in the educational system will be elaborated. The general goals of three educational stages (elementary, secondary and high School and the amount of attention to national identity will be subtlety discussed. The results show that national identity in Iranian educational system has no desirable situation and as this factor has effective role, it needs to take into more considerations for developmental issues.

  19. TRANSNATIONAL EDUCATION AS TOOL OF MARKETING POLICY OF THE BRITISH EDUCATION SYSTEM IN THE INTERNATIONAL MARKET OF EDUCATIONAL SERVICES

    Directory of Open Access Journals (Sweden)

    Ш В Тагирова

    2015-12-01

    Full Text Available The growth of academic mobility of students, professors, professionals, experts, as well as educational programs and institutions has led to the emergence of new forms of educational services in the global education market - transnational (cross-border education. International branch campuses, distance learning, joint educational programs, educational services of commercial providers are the most common types of transnational education and act as an effective tool of a national marketing strategy to promote a national education system in education global market

  20. FUNCTIONS OF THE HEAD OF SPECIAL (CORRECTIONAL) EDUCATIONAL INSTITUTION ON PERFECTION OF ESTIMATION OF EDUCATIONAL SYSTEM

    OpenAIRE

    Voynelenko Natalya Vaselyevna

    2012-01-01

    In article the maintenance of activity of the head of special (correctional) educational institution on the organization of estimation of quality of educational system is discussed. The model of joint activity of participants of educational process on estimation of educational objects, as component of system of quality management in Educational institution is presented. Functions of estimation of educational system in activity of the head of educational institution are formulated.

  1. User Authentication Mechanisms for Remote Education Systems

    Directory of Open Access Journals (Sweden)

    Ekaterina Yurievna Gourina

    2013-02-01

    Full Text Available Systems of remote education (RE are now widespread. These systems are convenient in terms of simplicity, efficiency of education, costs, opportunities to study with a teacher when you are in different parts of the globe, to attend online lectures and seminars. The information circulating in this system is a source of making money for its owner, which of course does not want the system (and the information in it to be used by not authorized users. In this article methods of authentication in such systems is discussed, because you can put a firewall, encrypt data transmissions, etc., but if there will be free access to the server, where all the information is held — it will all be useless.

  2. INFORMATION-ANALYTICAL SYSTEM OF EDUCATIONAL MANAGEMENT

    Directory of Open Access Journals (Sweden)

    Y. Tryus

    2011-05-01

    Full Text Available The conceptual approaches to create the information-analytical system of educational management, which used modern methods of decision-making and simulation, web-technology are considered. The main criteria for selection of system development are: openness, free of charge, easy of use and independence of system software and hardware. The technology and the system itself meets the requirements as: focus on national and international standards in higher education, compliance with service-oriented architecture, ensure stable operation for a large number of users, support a clear division of users rights to obtain and change information resources, modularity of final product and its ability to integrate into the university corporate information system.

  3. An adaptive compensation algorithm for temperature drift of micro-electro-mechanical systems gyroscopes using a strong tracking Kalman filter.

    Science.gov (United States)

    Feng, Yibo; Li, Xisheng; Zhang, Xiaojuan

    2015-05-13

    We present an adaptive algorithm for a system integrated with micro-electro-mechanical systems (MEMS) gyroscopes and a compass to eliminate the influence from the environment, compensate the temperature drift precisely, and improve the accuracy of the MEMS gyroscope. We use a simplified drift model and changing but appropriate model parameters to implement this algorithm. The model of MEMS gyroscope temperature drift is constructed mostly on the basis of the temperature sensitivity of the gyroscope. As the state variables of a strong tracking Kalman filter (STKF), the parameters of the temperature drift model can be calculated to adapt to the environment under the support of the compass. These parameters change intelligently with the environment to maintain the precision of the MEMS gyroscope in the changing temperature. The heading error is less than 0.6° in the static temperature experiment, and also is kept in the range from 5° to -2° in the dynamic outdoor experiment. This demonstrates that the proposed algorithm exhibits strong adaptability to a changing temperature, and performs significantly better than KF and MLR to compensate the temperature drift of a gyroscope and eliminate the influence of temperature variation.

  4. A Novel Blind Source Separation Algorithm and Performance Analysis of Weak Signal against Strong Interference in Passive Radar Systems

    Directory of Open Access Journals (Sweden)

    Chengjie Li

    2016-01-01

    Full Text Available In Passive Radar System, obtaining the mixed weak object signal against the super power signal (jamming is still a challenging task. In this paper, a novel framework based on Passive Radar System is designed for weak object signal separation. Firstly, we propose an Interference Cancellation algorithm (IC-algorithm to extract the mixed weak object signals from the strong jamming. Then, an improved FastICA algorithm with K-means cluster is designed to separate each weak signal from the mixed weak object signals. At last, we discuss the performance of the proposed method and verify the novel method based on several simulations. The experimental results demonstrate the effectiveness of the proposed method.

  5. Entrepreneurial universities in a world educational system

    Directory of Open Access Journals (Sweden)

    Iryna Kalenyuk

    2016-12-01

    Full Text Available This article analyzes modern development tendencies of university activities, it proved establishing of a global educational system, which shows increase of university education role, competition escalating and transformation of modern universities functions. It comprehensively studies the process when universities, both traditional and modern – business ones, are extending their functions. The article studied the development of scientists’ beliefs related to the essence and forms of entrepreneurial universities. On a basis of generalization of existing approaches, the authors give definition of the essence of entrepreneurial university as a subject of educational, scientific and other allied activities, which receives financial resources from diversified sources, extends fields of its activities and services. The foundation of the system of extended and main criteria for definition of entrepreneurial universities was laid. The main ones are the following: considerable financial autonomy and receiving of significant funding from non-governmental and diversified sources. Amounts and financial funding structure of the world leading universities were analyzed. It was proved that income from activities, which are allied with the main one (educational activity, increase. The article provides the amounts and the significance of international grants that ensure financial firmness, financial motivation of personnel, upgrades of facilities and resources, initiation and effectiveness of scientific-research activities of universities. Special attention was paid to research of such financial resources of the world leading universities as endowment funds, their scales, features and importance to boost economic capacities of higher education establishments. It was proved that it is important to consider world experience of entrepreneurial universities’ work within development and improving of competitive performance of Ukrainian higher education

  6. COMPARATIVE ANALYSIS OF GLOBAL TERTIARY EDUCATIONAL SYSTEMS

    Directory of Open Access Journals (Sweden)

    Ciumas Cristina

    2013-07-01

    Full Text Available Higher education system occupies a special place in the policy of each nation. Regardless of geographical location, socio-economic or cultural differences, the need to improve the education offered for population by facilitating access to higher education becomes more and more important. Providing a suitable framework for the personal development of each student is expensive and involves high amounts of money. From the analyses carried out we couldn\\'t identify the substantial differences between the way it is structured and organized education system worldwide. However, we were able to identify a number of common elements that create a global University System. The need to invest in human resources through structural reforms in each country is present, and therefore a higher indention to pay greater attention to the development of the higher education system. In our work we decided to analyze education systems in countries like United States of America (USA, United Kingdom (GB, China (CHN, Germany (DE, France (FR, Russian Federation (RU, Japan (JPN average values recorded for EU-27 and last but not least Romania (RO. Although the investment in the University system is hard to quantify, it is unanimously acknowledged that a country can achieve a competitive advantage in international relations through a very well prepared and trained personnel. The countries reviewed in this paper have different policies when it comes to financial support of the University System. If Germany and France have decided to get involved directly in supporting the system by allocating the necessary funds from the State budget, another European country, the United Kingdom, decided to apply a policy diametrically opposite, similar to that existing in the USA and cover in a lesser degree the needs of universities in Government funds. Regardless of the policy adopted the results are intended to be the same: facilitating access to university education, a high quality of

  7. Employability: Challenges for Education and Training Systems

    Science.gov (United States)

    Perez, Elena Arjona; Garrouste, Christelle; Kozovska, Kornelia

    The recent crisis has taken its toll in terms of unemployment, especially among young people. This has revived the debate on the contribution of Education and Training (E&T) systems to the employability of young graduates. At European policy level, there is a growing interest in creating incentives for reforming E&T systems so as to make them more responsive to future labour market needs and short term adverse labour market conditions. One of the main challenges is finding valid measures for evaluating the contribution of E&T systems to employability, taking into account their diversity within the European Union. This paper presents an operational framework of analysis for employability and discusses some of the most important challenges related to the multidimensional nature of the employability concept, the lack of data for cross-country comparison and the difficulty of disentangling the role of education and training systems from other factors in evaluating labour market outcomes.

  8. Quality education as quality system support

    International Nuclear Information System (INIS)

    Crnoshia, L.; Gavriloska, M.; Denkovska, J.; Dimitrovski, A.

    1999-01-01

    Within the last ten years we are witnesses of the political and economical system transformation, that imposed the need for changing the way of thinking and work planning. The quality has become the imperative of working and a precondition for survival in the market. Solving the quality problems seeks planned and systematic approach that supposed appropriate personnel with adequate knowledge in the field of quality management and implementation of the quality system. Having in mind the need for documented quality system and quality management OKTA, has already started with personnel educational process for quality as a precondition for successful establishment of quality system. In this paper we present quality education approach and manner of its realization in OKTA Crude Oil Refinery - Skopje, Macedonia. (Original)

  9. An entrepreneurial education model for the Namibian Higher Education system

    Directory of Open Access Journals (Sweden)

    P. Ras

    2007-12-01

    Design/Methodology/Approach: This research is an exploratory research design based upon secondary data mainly provided by the Namibian Economic Policy Research Unit (NEPRU that enabled the researcher to understand and identify the problems that Namibia encounter in their small business environment. Theories, as developed by the University of Pretoria based on entrepreneurial education, were explored and formed the base of the theory exploration. Findings : The researcher investigated an existing entrepreneurial education model being used for the South African context, as well as a comparison of two models, and an integrated model based on the cited models. These models are used to show the importance of such models and the need to develop one for Namibia. Implications: This paper presents a model that can solve the basic need expressed by the Namibian Higher Education System to find an appropriate model to implement. Originality/Value: This paper provides a foundation from which an entrepreneurial education model can be implemented and improved / customised for the Namibian context.

  10. Towards a Systemic Theory of Gifted Education

    Science.gov (United States)

    Ziegler, Albert; Phillipson, Shane N.

    2012-01-01

    In this target article, we argue that current approaches to gifted education are based on the erroneous view that to understand the development of exceptionality we need to understand firstly the components of giftedness, including cognitive such as intelligence and non-cognitive factors such as motivation. In contrast, systemic approaches to…

  11. Educational Game Systems in Artificial Intelligence Course

    Science.gov (United States)

    Chubarkova, Elena V.; Sadchikov, Ilya A.; Suslova, Irina A.; Tsaregorodtsev, Andrey ?.; Milova, Larisa N.

    2016-01-01

    Article actuality based on fact that existing knowledge system aimed at future professional life of students: a skillful use game activity in educational process will teach students to look for alternative ways solving of real problems. The purpose of article lies in theoretical substantiation, development and testing of criteria, which must be…

  12. Towards Web Service-Based Educational Systems

    Science.gov (United States)

    Sampson, Demetrios G.

    2005-01-01

    The need for designing the next generation of web service-based educational systems with the ability of integrating components from different tools and platforms is now recognised as the major challenge in advanced learning technologies. In this paper, we discuss this issue and we present the conceptual design of such environment, referred to as…

  13. Engineering Education as a Complex System

    Science.gov (United States)

    Gattie, David K.; Kellam, Nadia N.; Schramski, John R.; Walther, Joachim

    2011-01-01

    This paper presents a theoretical basis for cultivating engineering education as a complex system that will prepare students to think critically and make decisions with regard to poorly understood, ill-structured issues. Integral to this theoretical basis is a solution space construct developed and presented as a benchmark for evaluating…

  14. A Community Health Education System to meet the health needs of Indo-Chinese women.

    Science.gov (United States)

    Ratnaike, R N; Chinner, T L

    1992-04-01

    This paper presents a Community Health Education System which is cost-effective, sustainable, strongly community-based, and directed at improving the health status of rural women in Indo-china (Kampuchea, Laos and Vietnam). The system is developed through a series of steps which are concerned with the education of Community Health Education Units (in national ministries of health) and, at the village level, among community health workers, women's groups, and other women. The ultimate aim is the establishment of a community health education program in Indochinese villages.

  15. A strongly coupled open system with a non-linear bath: fluctuation-dissipation and Langevin dynamics

    Science.gov (United States)

    Bhadra, Chitrak

    2018-03-01

    The study of Langevin dynamics and fluctuation-dissipation relation (FDR) for a generic probe system (represented by a mass M ), bilinearly coupled to a bath of harmonic oscillators, has been a standard paradigm for the microscopic theory of stochastic processes for several decades. The question that we probe in this paper is, how robust the structure of the classical FDR is, when one replaces the harmonic bath by an anharmonic one in the limit of strong system-bath coupling? Such a picture carries the signature of the probe system in the zeroth order through a nonlocal time kernel. We observe that the two-time noise correlations hold a rich structure from which the usual FDR emerges only in the leading order of perturbation. Beyond this order, multiple time scales and nontrivial dependence on the temperature starts to manifest. These new aspects conspire to break the time-translational invariance of the noise-correlations. Several other interesting features show up and we discuss them methodically through rigorous calculations order-by-order in perturbation. This formalistic derivation along with a specific example of non-linearity can be easily applied to a huge range of processes and statistical observables that fall under the purview of a system-reservoir theory.

  16. TV-Conference System in Education : "Development of Distance-interactive Education System"

    OpenAIRE

    坂川, 幸雄; 林, 暢夫; 大場, 範明; サカガワ, ユキオ; ハヤシ, ノブオ; オオバ, ノリアキ; Yukio, Sakagawa; Nobuo, Hayashi; Noriaki, Ohba

    1992-01-01

    Since the expectations on the part of the general public for lifelong learning is steadily growing, and commnications technology is developing remarkably, distance education has recently been attracting a great deal of attention from many quarters. Those of us engaged in junior college extension programs believe that a distance education system with a number of media options integrated into it can serve as a very effective mean of education. This article presents some general features of the ...

  17. Ultra-thin and strong formvar-based membranes with controlled porosity for micro- and nano-scale systems

    Science.gov (United States)

    Auchter, Eric; Marquez, Justin; Stevens, Garrison; Silva, Rebecca; Mcculloch, Quinn; Guengerich, Quintessa; Blair, Andrew; Litchfield, Sebastian; Li, Nan; Sheehan, Chris; Chamberlin, Rebecca; Yarbro, Stephen L.; Dervishi, Enkeleda

    2018-05-01

    We present a methodology for developing ultra-thin and strong formvar-based membranes with controlled morphologies. Formvar is a thin hydrophilic and oleophilic polymer inert to most chemicals and resistant to radiation. The formvar-based membranes are viable materials as support structures in micro- and macro-scale systems depending on thinness and porosity control. Tunable sub-micron thick porous membranes with 20%–65% porosity were synthesized by controlling the ratios of formvar, glycerol, and chloroform. This synthesis process does not require complex separation or handling methods and allows for the production of strong, thin, and porous formvar-based membranes. An expansive array of these membrane characterizations including chemical compatibility, mechanical responses, wettability, as well as the mathematical simulations as a function of porosity has been presented. The wide range of chemical compatibility allows for membrane applications in various environments, where other polymers would not be suitable. Our formvar-based membranes were found to have an elastic modulus of 7.8 GPa, a surface free energy of 50 mN m‑1 and an average thickness of 125 nm. Stochastic model simulations indicate that formvar with the porosity of ∼50% is the optimal membrane formulation, allowing the most material transfer across the membrane while also withstanding the highest simulated pressure loadings before tearing. Development of novel, resilient and versatile membranes with controlled porosity offers a wide range of exciting applications in the fields of nanoscience, microfluidics, and MEMS.

  18. Exploding the Ivory Tower: Systemic Change for Higher Education

    Science.gov (United States)

    Watson, William R.; Watson, Sunnie Lee

    2013-01-01

    Higher education faces increasing pressures to change to better meet the needs of modern society. Systemic change applies systems thinking and systems theory to change a complex system to a new paradigm. This paper argues for the need for the systemic change of higher education and presents educational technologists as particularly well placed to…

  19. Nonequilibrium self-energy functional theory. Accessing the real-time dynamics of strongly correlated fermionic lattice systems

    Energy Technology Data Exchange (ETDEWEB)

    Hofmann, Felix

    2016-07-05

    The self-energy functional theory (SFT) is extended to the nonequilibrium case and applied to the real-time dynamics of strongly correlated lattice-fermions. Exploiting the basic structure of the well established equilibrium theory the entire formalism is reformulated in the language of Keldysh-Matsubara Green's functions. To this end, a functional of general nonequilibrium self-energies is constructed which is stationary at the physical point where it moreover yields the physical grand potential of the initial thermal state. Nonperturbative approximations to the full self-energy can be constructed by reducing the original lattice problem to smaller reference systems and varying the functional on the space of the respective trial self-energies, which are parametrized by the reference system's one-particle parameters. Approximations constructed in this way can be shown to respect the macroscopic conservation laws related to the underlying symmetries of the original lattice model. Assuming thermal equilibrium, the original SFT is recovered from the extended formalism. However, in the general case, the nonequilibrium variational principle comprises functional derivatives off the physical parameter space. These can be carried out analytically to derive inherently causal conditional equations for the optimal physical parameters of the reference system and a computationally realizable propagation scheme is set up. As a benchmark for the numerical implementation the variational cluster approach is applied to the dynamics of a dimerized Hubbard model after fast ramps of its hopping parameters. Finally, the time-evolution of a homogeneous Hubbard model after sudden quenches and ramps of the interaction parameter is studied by means of a dynamical impurity approximation with a single bath site. Sharply separated by a critical interaction at which fast relaxation to a thermal final state is observed, two differing response regimes can be distinguished, where the

  20. Awareness of diabetes mellitus among diabetic patients in the Gambia: a strong case for health education and promotion.

    Science.gov (United States)

    Foma, Mafomekong Ayuk; Saidu, Yauba; Omoleke, Semeeh Akinwale; Jafali, James

    2013-12-05

    Awareness of various aspects of Diabetes Mellitus (DM) is essential for the prevention, management and control of the disease. However, several studies have consistently shown that awareness of DM in the general population is low. None of these studies, however, was conducted in The Gambia, even though the condition constitutes a major public health problem in the country. In this paper, we assessed the awareness of DM among diabetic patients attending the Medical Out-Patient Department (MOPD) of Royal Victoria Teaching Hospital (RVTH), Banjul. We interviewed 200 patients attending the MOPD of RVTH. We used a tool containing questions on patient's demographic characteristics and awareness of various aspects of DM including general knowledge on DM, causes, complications, management and prevention. Of the 199 patients who were aware of their condition, only 47% said they knew what DM is. Similarly, 53% of the study participants had no knowledge of the causes of DM and about 50% were not aware of the methods of prevention. 67% knew that DM can result to loss of sight while 46.5% knew that DM can cause poor wound healing. Few respondents knew that DM can lead to kidney failure (13.5%), skin sepsis (12.0%), heart failure (5.5%) and stroke (4.5%). Close to 50% of the respondent did not know how DM can be prevented. Level of education, duration of illness and knowledge of a family member with diabetes were important predictors of knowledge in our study. Our study shows that the majority of patients attending the MOPD have poor knowledge on several aspects of DM. Hence, there is need for conscious efforts towards improving the level of awareness through health education and promotion, not limited to the hospital but also within the general population, as part of strategies to prevent, manage and control DM.

  1. Onset of magnetic order in strongly-correlated systems from ab initio electronic structure calculations: application to transition metal oxides

    Science.gov (United States)

    Hughes, I. D.; Däne, M.; Ernst, A.; Hergert, W.; Lüders, M.; Staunton, J. B.; Szotek, Z.; Temmerman, W. M.

    2008-06-01

    We describe an ab initio theory of finite temperature magnetism in strongly-correlated electron systems. The formalism is based on spin density functional theory, with a self-interaction corrected local spin density approximation (SIC-LSDA). The self-interaction correction is implemented locally, within the Kohn-Korringa-Rostoker (KKR) multiple-scattering method. Thermally induced magnetic fluctuations are treated using a mean-field 'disordered local moment' (DLM) approach and at no stage is there a fitting to an effective Heisenberg model. We apply the theory to the 3d transition metal oxides, where our calculations reproduce the experimental ordering tendencies, as well as the qualitative trend in ordering temperatures. We find a large insulating gap in the paramagnetic state which hardly changes with the onset of magnetic order.

  2. Novel siRNA delivery system using a ternary polymer complex with strong silencing effect and no cytotoxicity.

    Science.gov (United States)

    Kodama, Yukinobu; Shiokawa, Yumi; Nakamura, Tadahiro; Kurosaki, Tomoaki; Aki, Keisei; Nakagawa, Hiroo; Muro, Takahiro; Kitahara, Takashi; Higuchi, Norihide; Sasaki, Hitoshi

    2014-01-01

    We developed a novel small interfering RNA (siRNA) delivery system using a ternary complex with polyethyleneimine (PEI) and γ-polyglutamic acid (γ-PGA), which showed silencing effect and no cytotoxicity. The binary complexes of siRNA with PEI were approximately 73-102 nm in particle size and 45-52 mV in ζ-potential. The silencing effect of siRNA/PEI complexes increased with an increase of PEI, and siRNA/PEI complexes with a charge ratio greater than 16 showed significant luciferase knockdown in a mouse colon carcinoma cell line regularly expressing luciferase (Colon26/Luc cells). However, strong cytotoxicity and blood agglutination were observed in the siRNA/Lipofectamine complex and siRNA/PEI16 complex. Recharging cationic complexes with an anionic compound was reported to be a promising method for overcoming these toxicities. We therefore prepared ternary complexes of siRNA with PEI (charge ratio 16) by the addition of γ-PGA to reduce cytotoxicity and deliver siRNA. As expected, the cytotoxicity of the ternary complexes decreased with an increase of γ-PGA content, which decreased the ζ-potential of the complexes. A strong silencing effect comparable to siRNA/Lipofectamine complex was discovered in ternary complexes including γ-PGA with an anionic surface charge. The high incorporation of ternary complexes into Colon26/Luc cells was confirmed with fluorescence microcopy. Having achieved knockdown of an exogenously transfected gene, the ability of the complex to mediate knockdown of an endogenous housekeeping gene, glyceraldehyde 3-phosphate dehydrogenase (GAPDH), was assessed in B16-F10 cells. The ternary complex (siRNA/PEI16/γ-PGA12 complex) exhibited a significant GAPDH knockdown effect. Thus, we developed a useful siRNA delivery system.

  3. Fault diagnosis for the heat exchanger of the aircraft environmental control system based on the strong tracking filter.

    Science.gov (United States)

    Ma, Jian; Lu, Chen; Liu, Hongmei

    2015-01-01

    The aircraft environmental control system (ECS) is a critical aircraft system, which provides the appropriate environmental conditions to ensure the safe transport of air passengers and equipment. The functionality and reliability of ECS have received increasing attention in recent years. The heat exchanger is a particularly significant component of the ECS, because its failure decreases the system's efficiency, which can lead to catastrophic consequences. Fault diagnosis of the heat exchanger is necessary to prevent risks. However, two problems hinder the implementation of the heat exchanger fault diagnosis in practice. First, the actual measured parameter of the heat exchanger cannot effectively reflect the fault occurrence, whereas the heat exchanger faults are usually depicted by utilizing the corresponding fault-related state parameters that cannot be measured directly. Second, both the traditional Extended Kalman Filter (EKF) and the EKF-based Double Model Filter have certain disadvantages, such as sensitivity to modeling errors and difficulties in selection of initialization values. To solve the aforementioned problems, this paper presents a fault-related parameter adaptive estimation method based on strong tracking filter (STF) and Modified Bayes classification algorithm for fault detection and failure mode classification of the heat exchanger, respectively. Heat exchanger fault simulation is conducted to generate fault data, through which the proposed methods are validated. The results demonstrate that the proposed methods are capable of providing accurate, stable, and rapid fault diagnosis of the heat exchanger.

  4. Exploring the premises of European education systems

    DEFF Research Database (Denmark)

    Moutsios, Stavros

    This paper (part of a project carried out under the EU’s Marie Curie programme of Intra-European Fellowships, FP7-People-2011-IEF, CETH, 298656) explores the emergence of the European education systems in Modernity. As the paper argues, the institution of education in Europe was associated......-determination. But, in addition to Greek Antiquity, on which Modernity drew, the European social imaginary included the central signification of rational control and domination, which is articulated mainly as instrumental rationality, techno-scientific supremacy, capitalism, national state and bureaucracy....... This fundamental antinomy, between autonomy and rational control, explicated by Castoriadis, constitutes the very particularity of the European imaginary, which has been incarnated, as the paper argues, in the institution of education since the Enlightenment – although its first traces appeared much earlier...

  5. Streamlining Education System Through Waqf Enlargement

    Directory of Open Access Journals (Sweden)

    Imam Bahroni

    2016-06-01

    Full Text Available This paper is aimed at discussing the development of education systembased on the Waqf Empowerment. It is an experience of Gontor ModernIntegrated Islamic Institution to maintain its existence through the activitiesof Waqf Enlargement. The spirit of self-reliance which has been implementedby Gontor through various economic enterprise activities inside the campus isthe total processes of educational activities, carried out by students andteachers themselves. They act as the subjects and objects of the education atthe same time. They teach themselves through various activities, creativitiesand social interaction for their character and personality building. Thislearning process is purposely undertaken in Gontor, because the basicprinciple of this system is to actualize the community orientation throughwhich the students in the campus guided and prepared to have a spirit ofself reliance. So when they back to the society to undertake the real life theyconfidently take their role to develop their society for the sake of Allah andunity of muslim ummah.

  6. Evaluation of Distance Education System for Adult Education Using 4 Video Transmissions

    OpenAIRE

    渡部, 和雄; 湯瀬, 裕昭; 渡邉, 貴之; 井口, 真彦; 藤田, 広一

    2004-01-01

    The authors have developed a distance education system for interactive education which can transmit 4 video streams between distant lecture rooms. In this paper, we describe the results of our experiments using the system for adult education. We propose some efficient ways to use the system for adult education.

  7. The Impact of Strong Climate Change on Inter-state Balancing in a Fully-renewable Simplified European Electricity System

    Science.gov (United States)

    Wohland, Jan; Witthaut, Dirk

    2017-04-01

    Electricity systems with a high penetration of renewables are strongly affected by weather patterns. Due to the variability of the climate system, a substantial fraction of energy supply needs to be provided by dispatchable power plants even if the consumption is on average balanced by renewables (e.g. Rodriguez et al. [2014]). In an interconnected system like the European electricity grid, benefits can arise from balancing generation mismatches spatially as long as overproduction in one region coincides with lack of generation in another region. These benefits might change as the climate changes and we thus investigate alterations of correlations between wind timeseries and Backup energy requirements. Our analysis is based on a five member model-ensemble from the EUROCORDEX initiative and we focus on onshore wind energy. We use the highest temporal (3h) and spatial (0.11°) resolution available to capture the intermittent and spatially diverse nature of renewable generation. In view of inter-model spread and other uncertainties, we use the strong climate change scenario rcp8.5 in order to obtain a high signal-to-noise ratio. We argue that rcp8.5 is best suited to reveal interesting interactions between climate change and renewable electricity system despite the fact that is in contradiction to the UNFCCC temperature goals (e.g. Schleussner et al. [2016]). We report spatially inhomogeneous alterations of correlations. In particular, we find increasing correlations between central and northern European states and decreasing correlations at the south-western and south-eastern margins of Europe. This hints to a lowering of balancing potentials within central and northern Europe due to climate change. A possible explanation might be associated to polar amplification and increasing frequencies of blocking events (Coumou [2015]). Moreover, we compute wind energy generation using a single-turbine model and a semi-random deployment procedure as developed in Monforti et al

  8. Assisted Learning Systems in e-Education

    Directory of Open Access Journals (Sweden)

    Gabriel ZAMFIR

    2014-01-01

    Full Text Available Human society, analyzed as a learning environment, presumes different languages in order to know, to understand or to develop it. This statement results as a default application of the cog-nitive domain in the educational scientific research, and it highlights a key feature: each essen-tial discovery was available for the entire language compatible society. E-Society is constructed as an application of E-Science in social services, and it is going to reveal a learning system for each application of the information technology developed for a compatible society. This article is proposed as a conceptual one focused on scientific research and the interrelationship be-tween the building blocks of research, defined as an engine for any designed learning system applied in the cognitive domain. In this approach, educational research become a learning sys-tem in e-Education. The purpose of this analysis is to configure the teacher assisted learning system and to expose its main principles which could be integrated in standard assisted instruc-tion applications, available in e-Classroom, supporting the design of specific didactic activities.

  9. Validation of the Jarzynski relation for a system with strong thermal coupling: an isothermal ideal gas model.

    Science.gov (United States)

    Baule, A; Evans, R M L; Olmsted, P D

    2006-12-01

    We revisit the paradigm of an ideal gas under isothermal conditions. A moving piston performs work on an ideal gas in a container that is strongly coupled to a heat reservoir. The thermal coupling is modeled by stochastic scattering at the boundaries. In contrast to recent studies of an adiabatic ideal gas with a piston [R.C. Lua and A.Y. Grosberg, J. Phys. Chem. B 109, 6805 (2005); I. Bena, Europhys. Lett. 71, 879 (2005)], the container and piston stay in contact with the heat bath during the work process. Under this condition the heat reservoir as well as the system depend on the work parameter lambda and microscopic reversibility is broken for a moving piston. Our model is thus not included in the class of systems for which the nonequilibrium work theorem has been derived rigorously either by Hamiltonian [C. Jarzynski, J. Stat. Mech. (2004) P09005] or stochastic methods [G.E. Crooks, J. Stat. Phys. 90, 1481 (1998)]. Nevertheless the validity of the nonequilibrium work theorem is confirmed both numerically for a wide range of parameter values and analytically in the limit of a very fast moving piston, i.e., in the far nonequilibrium regime.

  10. Fault Diagnosis for the Heat Exchanger of the Aircraft Environmental Control System Based on the Strong Tracking Filter

    Science.gov (United States)

    Ma, Jian; Lu, Chen; Liu, Hongmei

    2015-01-01

    The aircraft environmental control system (ECS) is a critical aircraft system, which provides the appropriate environmental conditions to ensure the safe transport of air passengers and equipment. The functionality and reliability of ECS have received increasing attention in recent years. The heat exchanger is a particularly significant component of the ECS, because its failure decreases the system’s efficiency, which can lead to catastrophic consequences. Fault diagnosis of the heat exchanger is necessary to prevent risks. However, two problems hinder the implementation of the heat exchanger fault diagnosis in practice. First, the actual measured parameter of the heat exchanger cannot effectively reflect the fault occurrence, whereas the heat exchanger faults are usually depicted by utilizing the corresponding fault-related state parameters that cannot be measured directly. Second, both the traditional Extended Kalman Filter (EKF) and the EKF-based Double Model Filter have certain disadvantages, such as sensitivity to modeling errors and difficulties in selection of initialization values. To solve the aforementioned problems, this paper presents a fault-related parameter adaptive estimation method based on strong tracking filter (STF) and Modified Bayes classification algorithm for fault detection and failure mode classification of the heat exchanger, respectively. Heat exchanger fault simulation is conducted to generate fault data, through which the proposed methods are validated. The results demonstrate that the proposed methods are capable of providing accurate, stable, and rapid fault diagnosis of the heat exchanger. PMID:25823010

  11. Predictive Modeling for Strongly Correlated f-electron Systems: A first-principles and database driven machine learning approach

    Science.gov (United States)

    Ahmed, Towfiq; Khair, Adnan; Abdullah, Mueen; Harper, Heike; Eriksson, Olle; Wills, John; Zhu, Jian-Xin; Balatsky, Alexander

    Data driven computational tools are being developed for theoretical understanding of electronic properties in f-electron based materials, e.g., Lanthanides and Actnides compounds. Here we show our preliminary work on Ce compounds. Due to a complex interplay among the hybridization of f-electrons to non-interacting conduction band, spin-orbit coupling, and strong coulomb repulsion of f-electrons, no model or first-principles based theory can fully explain all the structural and functional phases of f-electron systems. Motivated by the large need in predictive modeling of actinide compounds, we adopted a data-driven approach. We found negative correlation between the hybridization and atomic volume. Mutual information between these two features were also investigated. In order to extend our search space with more features and predictability of new compounds, we are currently developing electronic structure database. Our f-electron database will be potentially aided by machine learning (ML) algorithm to extract complex electronic, magnetic and structural properties in f-electron system, and thus, will open up new pathways for predictive capabilities and design principles of complex materials. NSEC, IMS at LANL.

  12. Education and training in the MEDICOM system.

    Science.gov (United States)

    Marinos, G; Palamas, S; Vlachos, I; Panou-Diamandi, O; Kalivas, D; Koutsouris, D

    2000-01-01

    MEDICOM system is a world wide telematics application for electronic commerce of medical devices. It has been designed so as to provide the health care professionals with a central Internet access to up-to-date information about medical equipment from multiple manufacturers, in a particular easy and friendly way. Moreover, the Medicom system will serve the health care professionals' requirements for high-quality information about specific products in a form of multimedia presentations and that of a secure communication channel with the community of manufacturers, especially for post marketing surveillance. The system will provide the medical staff (physicians and technicians) with demonstrations of the operation procedures and the functioning of high-tech equipment in a form of virtual models. Moreover, through the medicom system the end users of medical devices can have access to on line libraries and participate in special newsgroups. This paper discusses the architectural structure of the MEDICOM system with emphasis to its educational and training functionality.

  13. IMPROVING MANAGEMENT INFORMATION SYSTEMS AT A HIGHER EDUCATIONAL INSTITUTION

    OpenAIRE

    Nataliya N. Fedyakova

    2016-01-01

    Introduction: this paper deals with the foreign and domestic experience of creation and use of educational institution management automation systems. The problems of higher educational institutions management are essential in conditions of growing competition between educational institutions. Their complexity and timeliness defines multifunctional activity of higher educational institutions, diversity of funding sources, the variety of forms and types of educational, scientific, industrial an...

  14. Comparative Analysis of International Education Systems

    OpenAIRE

    John Wang; Jun Xia; Kimberly Hollister; Yawei Wang

    2009-01-01

    International comparisons of educational systems are commonly practiced using subjective methods available in literature. The use of subjective methods can lead to non-standard ranking; each individual investigator inputs his or her own subjective judgment when assigning weights to measurements in each class. The complied results differ with large variations. A mathematical evaluation method based on concept of Paretooptimal organization is proposed for this study. This method is easy to appl...

  15. Educational activities for a gamified system

    OpenAIRE

    Valderrama de la Torre, Guiomar

    2015-01-01

    The objective of this dissertation is to analyze, design, and implement an activity module for a larger educational platform with the use of gamification techniques with the purpose to improve learning, pass rates, and feedback. The project investigates how to better incentivize student learning. A software requirement specification was delineated to establish the system guidelines and behavior. Following, a definition of the activities in the module was created. This definition ...

  16. 25 CFR 38.12 - Leave system for education personnel.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Leave system for education personnel. 38.12 Section 38.12 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR EDUCATION EDUCATION PERSONNEL § 38.12 Leave system for education personnel. (a) Full-time school-term employees. Employees on a full-time school-term...

  17. Studying the Impacts of Globalization on Iranian Education System

    Science.gov (United States)

    Chahardahcheriki, Mitra Abdolahi; Shahi, Sakine

    2012-01-01

    The purpose of this study is to analyze the degree of globalization of important indicators of education system in Iran including teaching approaches, educational tools and facilities, curriculums and contents, and education management. Findings suggest that the situation of Iranian education system has some distance with the globalized level and…

  18. Basic Facts and Figures about the Educational System in Japan.

    Science.gov (United States)

    National Inst. for Educational Research, Tokyo (Japan).

    Tables, charts, and graphs convey supporting data that accompany text on various aspects of the Japanese educational system presented in this booklet. There are seven chapters: (1) Fundamental principles of education; (2) Organization of the educational system; (3) Basic statistics of education; (4) Curricula, textbooks, and instructional aids;…

  19. Education in Accounting Using an Interactive System

    Directory of Open Access Journals (Sweden)

    Bogdan Patrut

    2010-04-01

    Full Text Available This paper represents a summary of a research report and the results of developing an educational software, including a multi-agent system for teaching accounting bases and financial accounting. The paper describes the structure of the multi-agent system, defined as a complex network of s-agents. Each s-agent contains 6 pedagogical agents and a coordinator agent. We havedefined a new architecture (BeSGOTE that extends the BDI architecture for intelligent agents and we have defined a mixing-up relation among the accounts, presenting the way in which it can be used for testing students.

  20. A connection between extremely strong damped Lyman-α systems and Lyman-α emitting galaxies at small impact parameters

    Science.gov (United States)

    Noterdaeme, P.; Petitjean, P.; Pâris, I.; Cai, Z.; Finley, H.; Ge, J.; Pieri, M. M.; York, D. G.

    2014-06-01

    We present a study of ~100 high redshift (z ~ 2-4) extremely strong damped Lyman-α systems (ESDLA, with N(H i) ≥ 0.5 × 1022cm-2) detected in quasar spectra from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey (SDSS-III) Data Release 11. We study the neutral hydrogen, metal, and dust content of this elusive population of absorbers and confirm our previous finding that the high column density end of the N(H i) frequency distribution has a relatively shallow slope with power-law index -3.6, similar to what is seen from 21-cm maps in nearby galaxies. The stacked absorption spectrum indicates a typical metallicity ~1/20th solar, similar to the mean metallicity of the overall DLA population. The relatively small velocity extent of the low-ionisation lines suggests that ESDLAs do not arise from large-scale flows of neutral gas. The high column densities involved are in turn more similar to what is seen in DLAs associated with gamma-ray burst afterglows (GRB-DLAs), which are known to occur close to star-forming regions. This indicates that ESDLAs arise from a line of sight passing at very small impact parameters from the host galaxy, as observed in nearby galaxies. This is also supported by simple theoretical considerations and recent high-z hydrodynamical simulations. We strongly substantiate this picture by the first statistical detection of Ly α emission with ⟨LESDLA(Ly α)⟩ ≃ (0.6 ± 0.2) × 1042 erg s-1 in the core of ESDLAs (corresponding to about 0.1 L⋆ at z ~ 2-3), obtained through stacking the fibre spectra (of radius 1 ″ corresponding to ~8 kpc at z ~ 2.5). Statistical errors on the Ly α luminosity are of the order of 0.1 × 1042 erg s-1 but we caution that the measured Ly α luminosity may be overestimated by ~35% due to sky light residuals and/or FUV emission from the quasar host and that we have neglected flux-calibration uncertainties. We estimate a more conservative uncertainty of 0.2 × 1042 erg s-1. The

  1. Performance evaluation of the distance education system with fuzzy logic

    Science.gov (United States)

    Armaǧan, Hamit; Yiǧit, Tuncay

    2017-07-01

    Distance education is a kind of education that brought together course advisor, student and educational materials in a different time and place through communicational technologies. In this educational system the success of education is directly related to audio, video and interaction. In this study, a model is created by using fuzzy logic with the success of distance education students and the components of distance education. This study is made by MATLAB fuzzy logic toolbox. Audio, video, educational technology, student achievement are used as parameters in the evaluation. System assessment is carried out depending on parameter.

  2. Global navigation satellite system detection of preseismic ionospheric total electron content anomalies for strong magnitude (Mw>6) Himalayan earthquakes

    Science.gov (United States)

    Sharma, Gopal; Champati ray, Prashant Kumar; Mohanty, Sarada; Gautam, Param Kirti Rao; Kannaujiya, Suresh

    2017-10-01

    Electron content in the ionosphere is very sensitive to temporary disturbances of the Earth's magnetosphere (geomagnetic storm), solar flares, and seismic activities. The Global Navigation Satellite System (GNSS)-based total electron content (TEC) measurement has emerged as an important technique for computations of earthquake precursor signals. We examined the pre-earthquake signatures for eight strong magnitude (Mw>6: 6.1 to 7.8) earthquakes with the aid of GNSS-based TEC measurement in the tectonically active Himalayan region using International GNSS Service (IGS) stations as well as local GNSS-based continuously operating reference stations (CORS). The results indicate very significant ionospheric anomalies in the vertical total electron content (vTEC) a few days before the main shock for all of the events. Geomagnetic activities were also studied during the TEC observation window to ascertain their role in ionospheric perturbations. It was also inferred that TEC variation due to low magnitude events could also be monitored if the epicenter lies closer to the GNSS or IGS station. Therefore, the study has confirmed TEC anomalies before major Himalayan earthquakes, thereby making it imperative to set up a much denser network of IGS/CORS for real-time data analysis and forewarning.

  3. Spin-flip configuration interaction singles with exact spin-projection: Theory and applications to strongly correlated systems.

    Science.gov (United States)

    Tsuchimochi, Takashi

    2015-10-14

    Spin-flip approaches capture static correlation with the same computational scaling as the ordinary single reference methods. Here, we extend spin-flip configuration interaction singles (SFCIS) by projecting out intrinsic spin-contamination to make it spin-complete, rather than by explicitly complementing it with spin-coupled configurations. We give a general formalism of spin-projection for SFCIS, applicable to any spin states. The proposed method is viewed as a natural unification of SFCIS and spin-projected CIS to achieve a better qualitative accuracy at a low computational cost. While our wave function ansatz is more compact than previously proposed spin-complete SF approaches, it successfully offers more general static correlation beyond biradicals without sacrificing good quantum numbers. It is also shown that our method is invariant with respect to open-shell orbital rotations, due to the uniqueness of spin-projection. We will report benchmark calculations to demonstrate its qualitative performance on strongly correlated systems, including conical intersections that appear both in ground-excited and excited-excited degeneracies.

  4. Dietary geraniol by oral or enema administration strongly reduces dysbiosis and systemic inflammation in dextran sulphate sodium-treated mice.

    Directory of Open Access Journals (Sweden)

    Luigia eDe Fazio

    2016-03-01

    Full Text Available (Trans-3,7-Dimethyl-2,6-octadien-1-ol, commonly called geraniol (Ge-OH, is an acyclic monoterpene alcohol with well-known anti-inflammatory, antitumoral and antimicrobial properties. It is widely used as a preservative in the food industry and as an antimicrobial agent in animal farming. The present study investigated the role of Ge-OH as an anti-inflammatory and anti-dysbiotic agent in the dextran sulphate sodium (DSS-induced colitis mouse model. Ge-OH was orally administered to C57BL/6 mice at daily doses of 30 and 120mg kg(-1 body weight, starting six days before DSS treatment and ending the day after DSS removal. Furthermore, Ge-OH 120 mg kg(-1 dose body weight was administered via enema during the acute phase of colitis to facilitate its on-site action. The results show that orally or enema-administered Ge-OH is a powerful antimicrobial agent able to prevent colitis-associated dysbiosis and decrease the inflammatory systemic profile of colitic mice. As a whole, Ge-OH strongly improved the clinical signs of colitis and significantly reduced cyclooxygenase-2 (COX-2 expression in colonocytes and in the gut wall. Ge-OH could be a powerful drug for the treatment of intestinal inflammation and dysbiosis.

  5. Coalitions and Competition in Malaysia – Incremental Transformation of a Strong-party System

    Directory of Open Access Journals (Sweden)

    Meredith L. Weiss

    2013-01-01

    Full Text Available The seeming entrenchment of a two-coalition system in Malaysia solidifies the centrality of strongly institutionalised parties in the polity. The primary parties in Malaysia reach deeply into society and nest within dense networks of both intra-party and external organisations. Given this order – which differentiates Malaysia from its neighbours in the region – political liberalisation, if it happens, should be expected largely via electoral politics, and, specifically, through inter-party challenges. Indeed, the ideological and material premises of the emergent Pakatan Rakyat (People’s Alliance differ substantially from those of the long-standing Barisan Nasional (National Front, even as both pursue the same broad swathe of voters. This distinction reflects and furthers transformation in Malaysian politics, including not just a shift in the salience of communal identities and in policy proposals and issues, but also in patterns of political engagement both within and outside of parties, regardless of which coalition controls parliament.

  6. Theoretical analysis of the multiple resonances for many-level spin systems. The four-level spin system of s electron ions subjected to strong microwave fields

    International Nuclear Information System (INIS)

    Popescu, F.F.; Marica, F.

    1994-01-01

    The analytic steady state solutions of master equation for the density matrix of a multilevel spin system in dilute paramagnetic crystals at high temperature, subjected to strong microwave fields, are discussed. These solutions enable to obtain the populations of the levels, and the microwave powers absorbed or emitted by the crystal, in the presence of one, two or more microwave fields. A detailed theoretical study of the maser effects for s electron ions with nuclear spin one-half is carried out. In the case of three frequency correlated strong fields, when 'the spectroscopic' bridge conditions are fulfilled, sensitive detections, or high efficient generations of microwaves of frequency higher than those of the pumping fields are predicted. (author) 16 figs., 16 refs

  7. Pulsed Laser Shearography System for Defence Research and Education

    Science.gov (United States)

    2017-09-15

    Defense Research and Education LONG-TERM GOALS The University of Mississippi purchased a pulsed digital shearography system for research...and education involving vibration analysis under the Defense University Research Instrumentation Program (DURIP). This system will be used to...acquire a pulsed digital shearography system for use in research and education . APPROACH The University of Mississippi issued a subcontract

  8. Bologna Process Principles Integrated into Education System of Kazakhstan

    Science.gov (United States)

    Nessipbayeva, Olga

    2013-01-01

    The purpose of this paper is to analyze the fulfillment of the parameters of the Bologna Process in the education system of Kazakhstan. The author gives short review of higher education system of the Republic of Kazakhstan with necessary data. And the weaknesses of the system of higher education are identified. Moreover, implementing…

  9. A Systemic Integration of Technology for New-Paradigm Education

    Science.gov (United States)

    Watson, William R.; Watson, Sunnie Lee; Reigeluth, Charles M.

    2012-01-01

    Educational reform efforts have failed to create widespread improvement. The authors argue that rather than trying to improve the existing system of education, a new learner-centered paradigm is needed that supports individualized learning. Such a significantly different system of education will require the systemic application of technology to…

  10. Benefits of an inclusive US education system.

    Science.gov (United States)

    Gantt, Elisabeth

    2013-01-01

    Presented is a historical perspective of one scientist's journey from war-torn Europe to the opportunities presented by a flexible US educational system. It celebrates the opening of the science establishment that began in the 1950s and its fostering of basic research, and recognizes individuals who were instrumental in guiding the author's education as well as those with whom she later participated in collaborative algal plant research. The initial discovery and later elucidation of phycobilisome structure are elaborated, including the structural connection with photosystem II. Furthermore, she summarizes some of her laboratory's results on carotenoids and its exploration of the isoprenoid pathway in cyanobacteria. Finally, she comments on the gender gap and how her generation benefited when opportunities for women scientists were enlarged.

  11. The DES Bright Arcs Survey: Hundreds of Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey Science Verification and Year 1 Observations

    Energy Technology Data Exchange (ETDEWEB)

    Diehl, H. T.; Buckley-Geer, E. J.; Lindgren, K. A.; Nord, B.; Gaitsch, H.; Gaitsch, S.; Lin, H.; Allam, S.; Collett, T. E.; Furlanetto, C.; Gill, M. S. S.; More, A.; Nightingale, J.; Odden, C.; Pellico, A.; Tucker, D. L.; Costa, L. N. da; Neto, A. Fausti; Kuropatkin, N.; Soares-Santos, M.; Welch, B.; Zhang, Y.; Frieman, J. A.; Abdalla, F. B.; Annis, J.; Benoit-Lévy, A.; Bertin, E.; Brooks, D.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Cunha, C. E.; D’Andrea, C. B.; Desai, S.; Dietrich, J. P.; Drlica-Wagner, A.; Evrard, A. E.; Finley, D. A.; Flaugher, B.; García-Bellido, J.; Gerdes, D. W.; Goldstein, D. A.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; James, D. J.; Kuehn, K.; Kuhlmann, S.; Lahav, O.; Li, T. S.; Lima, M.; Maia, M. A. G.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Nichol, R. C.; Nugent, P.; Ogando, R. L. C.; Plazas, A. A.; Reil, K.; Romer, A. K.; Sako, M.; Sanchez, E.; Santiago, B.; Scarpine, V.; Schindler, R.; Schubnell, M.; Sevilla-Noarbe, I.; Sheldon, E.; Smith, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; Walker, A. R.

    2017-09-01

    We report the results of our searches for strong gravitational lens systems in the Dark Energy Survey (DES) Science Verication and Year 1 observations. The Science Verication data spans approximately 250 sq. deg. with median i

  12. Three focal points for education systems in the 21st century

    DEFF Research Database (Denmark)

    Desjardins, Richard

    2012-01-01

    Strong and shared growth increasingly depend on the capacity of nations to develop, deploy and upgrade the skills of their citizens. Within this context, the following places an emphasis on three focal points for education systems in the 21st century. The first focus is on essential skills....... The second focus is on the effectiveness of impact of education on economic and social outcomes. The third focus is on the dynamic elements of skill formation and skill use....

  13. [Evaluation of antibiotic resistance in the frame of the surveillance system for nosocomial infections. Strong and weak points].

    Science.gov (United States)

    Serban, Roxana; Codiţă, Irina

    2010-01-01

    Since 2005 a sentinel system for surveillance of nosocomial diseases has been introduced in Romania which had, among other objectives, the evaluation of antibiotic resistance. The surveillance methodology was shared annually, the number of participants varying between 12 and 40 hospitals. During 2005-2008 the Reference Laboratory for Nosocomial Infections and Antibiotic Resistance in the "Cantacusino" NIRDMI received 1481 bacterial strains, comprising 531 S. aureus, 486 Pseudomonas aeruginosa, 439 enterobacteria and 25 enterococci strains. The resistance percents widely differred for some species, especially regarding the type of hospital unit that sent the strains (ex., Pseudomonas aeruginosa isolated form patients with burns). A great variability was noted concerning the manner in which nominalized hospitals responded to the solicitations in the methodology that was shared. especially regarding participation to a national bank for bacterial strains. Only for 5 out of the 40 hospitals that participated along the 4 years in the sentinel programme the annual comparative evaluations of antibiotic resistance were achieved. for a small number of microorganisms that underwent surveillance (S. aureus, E. coli). Among the strong points of the system we can point out: unity in methodology; working protocols for microbiological investigation given to all the participants; special forms for reporting. Among the weak points, we consider: modification in the number of participant hospitals during the program: unequal participation of hospitals, with unwanted effects on the sample representativity of analysed microbial strains; difficulties in stocking and processing laboratory data. In order to increase the quality of data provided, we consider the following as useful: harmonization of the objectives regarding integrated surveillance of nosocomial infections and antibiotic resistance in hospital environment, correlated with the ECDC demands and recommendations; inclusion in

  14. Micellar solubilization in strongly interacting binary surfactant systems. [Binary surfactant systems of: dodecyltrimethylammonium chloride + sodium dodecyl sulfate; benzyldimethyltetradecylammonium chloride + tetradecyltrimethylammonium chloride

    Energy Technology Data Exchange (ETDEWEB)

    Treiner, C. (Universite Pierre et Marie Curie, Paris (France)); Nortz, M.; Vaution, C. (Faculte de Pharmacie de Paris-sud, Chatenay-Malabry (France))

    1990-07-01

    The apparent partition coefficient P of barbituric acids between micelles and water has been determined in mixed binary surfactant solutions from solubility measurements in the whole micellar composition range. The binary systems chosen ranged from the strongly interacting system dodecyltrimethylammonium chloride + sodium dodecyl sulfate to weakly interacting systems such as benzyldimethyltetradecylammonium chloride + tetradecyltrimethyammonium chloride. In all cases studied, mixed micelle formation is unfavorable to micellar solubilization. A correlation is found between the unlike surfactants interaction energy, as measured by the regular solution parameter {beta} and the solute partition coefficient change upon surfactant mixing. By use of literature data on micellar solubilization in binary surfactant solutions, it is shown that the change of P for solutes which are solubilized by surface adsorption is generally governed by the sign and amplitude of the interaction parameter {beta}.

  15. Transformation of Taiwan's Upper Secondary Education System

    Directory of Open Access Journals (Sweden)

    Hueih-Lirng Laih

    1998-09-01

    Full Text Available This paper explores the policy issues circling around the structural "transition" in upper secondary education implicit in the twenty-year increase in secondary and third-level school enrollment rates in Taiwan. This expansion has taken place within a secondary school system which is rigidly divided into both general, i.e., academic, and vocational tracks and into public and private sectors: the majority of students are enrolled in the private vocational sector which is only loosely articulated with the university sector. These features of the school system are analysed against the background of social and economic developments in Taiwan as well as public opinion. The analysis suggests that the present structures of school must be "reformed" in ways that will result in a more unified secondary system with both greater public funding and better articulation of all school types with the third level. The policy options that circle around the possibility of such reforms in the areas of curriculum, examination structures and second level-third level articulation are discussed and a policy framework for the reform of the Taiwan secondary education sector is outlined.

  16. systemic chemical education reform [scer] in the global era

    African Journals Online (AJOL)

    IICBA01

    growing the systemic way of thinking of our students that is one of the most important characteristics of Global Era. Here is the systemic education reform which means the change of our educational system from linearity to systemic in which we design the curriculum and write content systemically, which presented by SATL ...

  17. The electrical properties of a strongly disordered system based on lightly doped germanium compensated by disordered regions

    International Nuclear Information System (INIS)

    Evseev, V.A.; Konopleva, R.F.; Yuferev, A.A.

    1976-01-01

    A study was made of lightly doped (Nsub(Sb) approximately 10 15 cm -3 ) n-Ge, heavily compensated (K = Nsub(A)/N sub(D) approximately 1) by fast neutrons from a reactor. Irradiation is shown to produce, near n-p conversion (annealing has the same effect near p-n conversion), a random relief of electrostatic potential which is caused by the overlap of the space-charge regions surrounding disordered regions (DR). the random potential field results in a spatial 'bending' of the whole band spectrum of germanium, similar to the way it is observed in amorphous semiconductors because of their disorder. Experiments show the conduction in the DR overlap region to be of an activated nature, associated with the ejection of carriers to the corresponding 'percolation' levels. The activation energy of such conduction varies with the degree of compensation. The shift of the Fermi level depends on the degree of compensation here in a much more sensitive way than in the case of compensation by chemical impurities. The properties of Ge obtained by DR overlap and by compensation with chemical impurities are compared. A superlinear I-V characteristic producing the switching effect is observed in strong electric fields (E approximately 10 3 V cm -1 ). A suggestion is made that a study of disordered systems, based on lightly doped germanium which is compensated with DRs produced by high-energy particles, should both help to obtain new information on the parameters of the DRs proper and help to simulate the properties of the amorphous semiconductors. (author)

  18. Rethinking Education in Botswana: A Need to Overhaul the Botswana Education System

    Science.gov (United States)

    Makwinja, Veronica Margaret

    2017-01-01

    Botswana through its two educational reform philosophies of 1977 and 1994 envisioned a developing education system that is on par with international standards. According to Tabulawa (2009), the education system was developed to produce critical thinkers, problem solvers, and innovative learners. The system was designed to provide opportunities for…

  19. Magnetic and resonant X-ray scattering investigations of strongly correlated electron systems; Etude de systemes electroniques fortement correles par diffusion magnetique et resonnante des rayons X

    Energy Technology Data Exchange (ETDEWEB)

    Paolasini, L.; Bergevin, F. de [European Synchrotron Radiation Facility, 38 - Grenoble (France)

    2008-06-15

    Resonant X-ray scattering is a method which combines high-Q resolution X-ray elastic diffraction and atomic core-hole spectroscopy for investigating electronic and magnetic long-range ordered structures in condensed matter. During recent years the development of theoretical models to describe resonant X-ray scattering amplitudes and the evolution of experimental techniques, which include the control and analysis of linear photon polarization and the introduction of extreme environment conditions such as low temperatures, high magnetic field and high pressures, have opened a new field of investigation in the domain of strongly correlated electron systems. (authors)

  20. Mexican Seismic Alert System's SAS-I algorithm review considering strong earthquakes felt in Mexico City since 1985

    Science.gov (United States)

    Cuellar Martinez, A.; Espinosa Aranda, J.; Suarez, G.; Ibarrola Alvarez, G.; Ramos Perez, S.; Camarillo Barranco, L.

    2013-05-01

    The Seismic Alert System of Mexico (SASMEX) uses three algorithms for alert activation that involve the distance between the seismic sensing field station (FS) and the city to be alerted; and the forecast for earthquake early warning activation in the cities integrated to the system, for example in Mexico City, the earthquakes occurred with the highest accelerations, were originated in the Pacific Ocean coast, whose distance this seismic region and the city, favors the use of algorithm called Algorithm SAS-I. This algorithm, without significant changes since its beginning in 1991, employs the data that generate one or more FS during P wave detection until S wave detection plus a period equal to the time employed to detect these phases; that is the double S-P time, called 2*(S-P). In this interval, the algorithm performs an integration process of quadratic samples from FS which uses a triaxial accelerometer to get two parameters: amplitude and growth rate measured until 2*(S-P) time. The parameters in SAS-I are used in a Magnitude classifier model, which was made from Guerrero Coast earthquakes time series, with reference to Mb magnitude mainly. This algorithm activates a Public or Preventive Alert if the model predicts whether Strong or Moderate earthquake. The SAS-I algorithm has been operating for over 23 years in the subduction zone of the Pacific Coast of Mexico, initially in Guerrero and followed by Oaxaca; and since March 2012 in the seismic region of Pacific covering the coasts among Jalisco, Colima, Michoacan, Guerrero and Oaxaca, where this algorithm has issued 16 Public Alert and 62 Preventive Alerts to the Mexico City where its soil conditions increase damages by earthquake such as the occurred in September 1985. This work shows the review of the SAS-I algorithm and possible alerts that it could generate from major earthquakes recordings detected by FS or seismometers near the earthquakes, coming from Pacific Ocean Coast whose have been felt in Mexico

  1. Stories from the margins of the educational system

    DEFF Research Database (Denmark)

    Pless, Mette

    2013-01-01

    The primary educational objective in Denmark is to ensure ‘education for all’, and one decisive logic within educational policy is that young people’s transitions through the educational system and into the labour market should be accelerated and streamlined. This logic presupposes a normal...... processes of the young people in question. I shall argue that the normal transition, which is currently held up as the political ideal, risks further marginalising young people who are already on the periphery of the educational system....... transition with regard to young people’s educational choices and a view of educational choice as ‘rational’ and individual. Drawing on an understanding of educational choice as socially embedded, this article focuses on ‘youth at risk’ in education, post-15 educational choices and educational transitions...

  2. Stories from the margins of the educational system

    DEFF Research Database (Denmark)

    Pless, Mette

    2014-01-01

    The primary educational objective in Denmark is to ensure ‘education for all’, and one decisive logic within educational policy is that young people’s transitions through the educational system and into the labour market should be accelerated and streamlined. This logic presupposes a normal...... processes of the young people in question. I shall argue that the normal transition, which is currently held up as the political ideal, risks further marginalising young people who are already on the periphery of the educational system....... transition with regard to young people’s educational choices and a view of educational choice as ‘rational’ and individual. Drawing on an understanding of educational choice as socially embedded, this article focuses on ‘youth at risk’ in education, post-15 educational choices and educational transitions...

  3. Effect of yogic education system and modern education system on sustained attention.

    Science.gov (United States)

    Rangan, R; Nagendra, H R; Bhatt, Ramachandra

    2009-01-01

    Sustained attention is a vital function mediated by the right frontoparietal cortex. The Six Letter Cancellation Task (SLCT) measures sustained attention. Development of sustained attention in a yoga-based education system compared to a modern one is the theme of the present study. To compare the effectiveness of the Modern Education System (MES) and the Gurukula Education System (GES) in developing sustained attention. Forty nine boys (11-13 years) were selected from two residential schools, one MES and the other GES, providing similar ambiance and daily routines. The boys were matched for age and socioeconomic status. The GES educational program is based around integrated yoga modules while the MES provides a conventional modern education program. Sustained attention was assessed using the SLCT at the start and end of an academic year. Within groups, the pre-post test differences were significant for both groups. However, the between groups result showed improvement in the GES group compared to the MES group at a P < 0.001 significance level. The study suggests that both MES and GES improve sustained attention in school boys, but GES is more effective.

  4. Comparison of Behavioral Disorders, Compromise Behaviors and Academic Achievement of Exceptional Students in Especial Educational System and Integrated Educational System

    Directory of Open Access Journals (Sweden)

    Davoud Fathi

    2011-04-01

    Full Text Available Objective:The purpose of this study is to compare the educational progress and behavioral compromise of exceptional students in special educational system and integrated system in Hamedan province. Materials & Methods:This research is based on comparison between all the exceptional students who divided in two groups of blind and deaf in three levels in clouding primary, guidance and high school students. 40 students from integrated and 40 students from especial educational system with cluster sampling method were selected the rate of P is considered as q .The rate of p was considered equal 0.5 and the rate of q equal 0.5 . Then for gathering data a questionnaire based on Akhnbakh experience was used . The data were analysed in &alpha= 0.05 level with independent T test and multivariate analysis of MANOVA variance . Results: The result showed that there is a significant difference between the amount of educational progress , compromise behaviors , amount and kind of abnormal behaviors of exceptional students in integrated educational system with special educational system . Also the rate of educational progress and compromise behaviors is better in integrated system than especial educational system . Moreover disordered behaviors of these students are less than their counterparts in special educational system . Conclusion: in general integrated educational system in comparison with especial educational system is most successful in field of educational progress ,compromise behavior and abnormal behavior in exceptional students (blind and deaf.

  5. CREATING A PHYSICAL EDUCATION TEACHER’S PROFESSIONAL IMAGE IN THE TERMS OF EDUCATION SYSTEM REFORMING

    Directory of Open Access Journals (Sweden)

    Volodymyr Tymoshenko

    2016-04-01

    Full Text Available The article discusses the formation of a physical education teachers’ professional image and its main characteristics. It substantiates the importance of studying the process of creating a positive professional image of the teacher in terms of humanization and democratization of the education system. The features of the teacher’s and the students’ modern professional work belongs to the profession of the physical education teacher. The author presents the analysis of scientific-pedagogical and socio-psychological literature. The following problems were solved: the degree of studying image formation problem is examined; the structure and nature of a modern teacher’s image is determined. It was concluded that the formation of a physical education teachers’ positive professional image is not a substitute for teaching activities and additional components are required. It is also necessary to focus on the teacher’s understanding of internal student world, and the constant development of his inner world. Reforming education, going to the humanization and democratization, focuses on personal development, not just on a simple transfer of knowledge imposes entirely new requirements for teacher personality. Society needs not only a teacher who gives knowledge, reproduces them and is a competent performer, and, above all, a professional, capable of continuous self-improvement that focuses on creativity and flexibility of thinking; personality, possessing a high human culture, is able to predict the end result of his or her activities, to realize their ideas, active, emotionally balanced and strong-willed person. The success of the teachers’ work depends on the degree of awareness of their professional and personal impact on others and taking responsibility for the consequences of this influence. A positive image is important for teachers and students and it is important for the teacher, as well-formed image is the key to success, both

  6. Hidden Challenges to Education Systems in Transition Economies.

    Science.gov (United States)

    Berryman, Sue E.

    This book, published by the World Bank, sounds the alarm for education in Europe and Central Asia (ECA). It describes how the transition from communism to free-market economies has left many countries' educational systems in disarray. At the start of transition, ECA education systems had solved problems that plagued other regions of the world,…

  7. A Systems Definition of Educational Technology in Society

    Science.gov (United States)

    Luppicini, Rocci

    2005-01-01

    Conceptual development in the field of Educational Technology provides crucial theoretical grounding for ongoing research and practice. This essay draws from theoretical developments both within and external to the field of Educational Technology to articulate a systems definition of Educational Technology in Society. A systems definition of…

  8. Development of Educational Management System in Small Primary School

    Science.gov (United States)

    Alsammarry, Yupayao; Sirisuthi, Chaiyuth; Duangcharthom, Surat

    2016-01-01

    The purposes of the research were: (1) to study the factors of Educational Management System in Small Primary School; (2) to investigate current situations problems and guidelines of developing educational management in small primary school; (3) to develop Educational Management System in Small Primary School; and (4) to examine the results of…

  9. Implementing Portfolios Using Tk20: An Educational Assessment System

    Science.gov (United States)

    Zhang, Jie; Fallon, Moira A.; Wright, Allison M.

    2016-01-01

    The purpose of this paper is to share results of collaborative effort introducing special education portfolios into an inclusive teacher education program using the Tk20 assessment system. Tk20 is an assessment system for both providing evidence of educational skills and achieving that evidence in such a way as to demonstrate growth of teacher…

  10. Handbook of Research on Instructional Systems and Educational Technology

    Science.gov (United States)

    Kidd, Terry, Ed.; Morris, Lonnie R., Jr., Ed.

    2017-01-01

    Incorporating new methods and approaches in learning environments is imperative to the development of education systems. By enhancing learning processes, education becomes more attainable at all levels. "The Handbook of Research on Instructional Systems and Educational Technology" is an essential reference source for the latest scholarly…

  11. Educational Systems and Rising Inequality: Eastern Germany after Unification

    Science.gov (United States)

    von Below, Susanne; Powell, Justin J. W.; Roberts, Lance W.

    2013-01-01

    Educational systems considerably influence educational opportunities and the resulting social inequalities. Contrasting institutional regulations of both structures and contents, the authors present a typology of educational system types in Germany to analyze their effects on social inequality in eastern Germany after unification. After 1990, the…

  12. Comparative Education: The Social Construction of the Modern World System.

    Science.gov (United States)

    Ramirez, Francisco O.; Meyer, John W.

    This paper is a critical assessment of the theory and evidence on three general issues in comparative education. It assesses the factors affecting the origins and expansion of national educational systems; the factors influencing the organizational structure and ideologies of systems of mass schooling and higher education; and the effects of…

  13. A Dynamic Systems Approach to Internationalization of Higher Education

    Science.gov (United States)

    Zhou, Jiangyuan

    2016-01-01

    Research shows that internationalization of higher education is a process rather than an end product. This paper applies the Dynamic Systems Theory to examine the nature and development of internationalization of higher education, and proposes that internationalization of higher education is a dynamic system. A dynamic framework of…

  14. Survey of Distance Education Utilization in Information Systems Departments.

    Science.gov (United States)

    Morse, Glynna E.; Glover, Harry; Travis, Julie

    A survey was conducted of 205 information systems departments to determine information about existing distance education programs, plans for future distance education programs, faculty selection and training, and advantages and disadvantages of distance education. Of the questionnaires returned by 46 information systems departments, only 12 were…

  15. The DES Bright Arcs Survey: Hundreds of Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey Science Verification and Year 1 Observations

    Energy Technology Data Exchange (ETDEWEB)

    Diehl, H. T.; Buckley-Geer, E. J.; Lindgren, K. A.; Nord, B.; Gaitsch, H.; Gaitsch, S.; Lin, H.; Allam, S.; Odden, C.; Pellico, A.; Tucker, D. L.; Kuropatkin, N.; Soares-Santos, M. [Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Collett, T. E. [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom); Furlanetto, C.; Nightingale, J. [University of Nottingham, School of Physics and Astronomy, Nottingham NG7 2RD (United Kingdom); Gill, M. S. S. [SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States); More, A. [Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583 (Japan); Costa, L. N. da; Neto, A. Fausti, E-mail: diehl@fnal.gov [Laboratório Interinstitucional de e-Astronomia—LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400 (Brazil); Collaboration: DES Collaboration; and others

    2017-09-01

    We report the results of searches for strong gravitational lens systems in the Dark Energy Survey (DES) Science Verification and Year 1 observations. The Science Verification data span approximately 250 sq. deg. with a median i -band limiting magnitude for extended objects (10 σ ) of 23.0. The Year 1 data span approximately 2000 sq. deg. and have an i -band limiting magnitude for extended objects (10 σ ) of 22.9. As these data sets are both wide and deep, they are particularly useful for identifying strong gravitational lens candidates. Potential strong gravitational lens candidate systems were initially identified based on a color and magnitude selection in the DES object catalogs or because the system is at the location of a previously identified galaxy cluster. Cutout images of potential candidates were then visually scanned using an object viewer and numerically ranked according to whether or not we judged them to be likely strong gravitational lens systems. Having scanned nearly 400,000 cutouts, we present 374 candidate strong lens systems, of which 348 are identified for the first time. We provide the R.A. and decl., the magnitudes and photometric properties of the lens and source objects, and the distance (radius) of the source(s) from the lens center for each system.

  16. CONCEPTUALIZING ISLAMIC BASED EDUCATION: An attempt toward Islamization of Educational System in Aceh

    Directory of Open Access Journals (Sweden)

    Hasan Basri

    2015-02-01

    Full Text Available This study proves that Islam has a unique concept of education and constructive values that can be applied in educational system. Discussion on Islamic education has not ended yet; that is why to reveal the Islamic educational values deriving from the primary sources of Islam, the Qur’an and Sunna (prophetic tradition, is not insignificant in the context of educational system in Aceh. Since Aceh has specific privilege in the fields of education, religion, and culture, it is crucial to break up earth the Islamic values and apply them into education programs. Realizing such programs should take accurate and strategic steps through islamization of education, integration of values, and internationalization of way of thinking. Besides, curriculum, method, system, policy, and dichotomy of educational system must be reformed concurrently.

  17. Current Developments in the French Engineering Education System

    Science.gov (United States)

    Lemaître, Denis

    2017-01-01

    The French engineering education system has been established in quite a different way from others in Europe, such as the German and British systems, for instance. Due to both the whole state system and the private initiatives during the industrial revolution, the engineering education system today is composed of a large number (nearly 200) of…

  18. Standardization of education as essential to the development of regional educational systems

    Directory of Open Access Journals (Sweden)

    Shevchuk Andrey

    2013-01-01

    Full Text Available The problematic aspects of the current educational standards in Ukraine as important legal instruments of regional educational systems were viewed. The regulated areas of education standards in Ukraine and the traditional approach based on the identified areas of their innovative changes where described. The main directions of innovation education standards depending on their subject focus where systemised.

  19. Emergence and Outlook of Competence-Based Education in European Education Systems: An Overview

    Science.gov (United States)

    Tchibozo, Guy

    2011-01-01

    This contribution takes stock on the emergence of competence-based education in European Union (EU) countries. The article explains how economic constraints but also educational motives led educational policies and systems in the EU to shift to competence-based education. The related instructional frame and concepts are presented, as are the major…

  20. Opinions on Computing Education in Korean K-12 System: Higher Education Perspective

    Science.gov (United States)

    Kim, Dae-Kyoo; Jeong, Dongwon; Lu, Lunjin; Debnath, Debatosh; Ming, Hua

    2015-01-01

    The need for computing education in the K-12 curriculum has grown globally. The Republic of Korea is not an exception. In response to the need, the Korean Ministry of Education has announced an outline for software-centric computing education in the K-12 system, which aims at enhancing the current computing education with software emphasis. In…

  1. Spontaneous emission spectra and quantum light-matter interactions from a strongly coupled quantum dot metal-nanoparticle system

    DEFF Research Database (Denmark)

    Van Vlack, C.; Kristensen, Philip Trøst; Hughes, S.

    2012-01-01

    the dot to the detector, we demonstrate that the strong-coupling regime should be observable in the far-field spontaneous emission spectrum, even at room temperature. The vacuum-induced emission spectra show that the usual vacuum Rabi doublet becomes a rich spectral triplet or quartet with two of the four...

  2. Transforming Teacher Education to Reform America's P-20 Education System

    Science.gov (United States)

    Futrell, Mary Hatwood

    2010-01-01

    Moving beyond "reform", teacher education programs need to be "transformed" to better prepare teachers, school counselors, and administrators to teach, guide, and lead in this complex society. Educators must have the skills, knowledge, and commitment to be part of the leadership team that assumes the responsibility for carrying the mantra of the…

  3. Educational Policy vs. Culturally Sensitive Programs in Turkish Educational System

    Science.gov (United States)

    Arslan, Hasan

    2009-01-01

    The purpose of this study is to examine the perceptions of elementary school teachers about the sensitiveness of principals, teachers, and curriculum on multicultural education. Education provides the transmission and the advancement of its culture while it is developing and enhancing the common values, the integrity and the progress of…

  4. Educational Systems and the Trade-Off between Labor Market Allocation and Equality of Educational Opportunity

    Science.gov (United States)

    Bol, Thijs; van de Werfhorst, Herman G.

    2013-01-01

    Educational systems with a high level of tracking and vocational orientation have been shown to improve the allocation of school-leavers in the labor market. However, tracked educational systems are also known to increase inequality of educational opportunity. This presumed trade-off between equality and labor market preparation is clearly rooted…

  5. Educational systems and the trade-off between labor market allocation and equality of educational opportunity

    NARCIS (Netherlands)

    Bol, T.; van de Werfhorst, H.G.

    2013-01-01

    Educational systems with a high level of tracking and vocational orientation have been shown to improve the allocation of school-leavers in the labor market. However, tracked educational systems are also known to increase inequality of educational opportunity. This presumed trade-off between

  6. The Brazilian education system. Students with disabilities

    Directory of Open Access Journals (Sweden)

    Roberto Dainese

    2010-07-01

    Full Text Available The Brazilian education system provides a specific form of organization for the inclusive education of students with disabilities. Law No. 9394 dated December 20, 1996, “Lei de diretrizes e bases da educação nacional”, presents in Chapter V the “educação especial" as a form of organization offered to students "portadores de Necessidades especiais”. Admission of students with disabilities in the Brazilian schools was characterized by several phases: the welfarist phase, the integration phase and the inclusion phase, which is the most recent one and now being debated. The presence of a special device fosters the differences, even when everybody enters the classbecause a separation perspective damps down all the procedural and design efforts towards a true integration, holding back collaboration and action sharing among teachers. We consider however effective an action that accompanies the gradual learning evolution mediating between the student with disabilities and peers, between him and the teachers, between him and the learning tools designed.

  7. [Peculiarities of the health literacy education system].

    Science.gov (United States)

    Sveikauskas, Vaclovas

    2005-01-01

    Health education encompasses opportunities for learning designed to improve health literacy, including increased knowledge and the development of life skills that lead to the improvement of individual and community health. Health literacy represents the cognitive and social skills, which determine the motivation and ability of individuals to gain access, to understand and use information in ways, which promote and maintain good health. There are three types of health literacy: basic, functional and critical. Basic health literacy implies a fundamental understanding of health problem and the ability to comply with prescribed actions to remedy the problem. Functional health literacy involves more advanced knowledge and skills to function in everyday society and the ability to seek out information in order to respond to changing needs. The most advanced level of health literacy is critical health literacy. It implies a significant level of knowledge, personal skills and confidence to manage one's health, and the ability to take action to change the determinants of health in the environment. Although these levels of health literacy are widely examined but systematic point of view is missing. The goal of this article is to report the peculiarities of the health literacy education system.

  8. IMPROVING MANAGEMENT INFORMATION SYSTEMS AT A HIGHER EDUCATIONAL INSTITUTION

    Directory of Open Access Journals (Sweden)

    Nataliya N. Fedyakova

    2016-06-01

    Full Text Available Introduction: this paper deals with the foreign and domestic experience of creation and use of educational institution management automation systems. The problems of higher educational institutions management are essential in conditions of growing competition between educational institutions. Their complexity and timeliness defines multifunctional activity of higher educational institutions, diversity of funding sources, the variety of forms and types of educational, scientific, industrial and economic activities, the need for monitoring of the market of educational services and the labor market (including the need for employment of graduates, the necessity for adaptation to continuously changing economic conditions. Materials and Methods: system approach and method of comparison were used in analysing the current state of development and organisation of the automated information systems of higher education. These methods were also used to compare the qualitative characteristics of different technologies and methods of creation of the automated information systems. Results: the foreign and domestic educational institution management automation systems SIMS. net, Capita Education, SPRUT, Galaxy of Higher Educational Institution Management”, and “GSVedomosty” were analysed. Disadvantages of the functional module AIS – AWP pertaining to the University Rector of the higher educational institution were found. The improvement of higher educational institution AIS by implementing decision support systems for the management, made on the basis of the model of SaaS (software as a service is discussed. The author developed a model of automated score-rating system to assess the individual performance of students. Discussion and Conclusions: the author tackles the problems of higher educational institution AIS taking into account the specifics of the use of higher educational institution management information systems. They have a practical

  9. Automation system for the linear induction accelerator with a strong guiding field for experiments with a hallow electron beam

    International Nuclear Information System (INIS)

    Arkhipov, O.V.; Bobyleva, L.V.; Glejbman, Eh.M.

    1989-01-01

    A system of the JINR linear induction accelerator automation is described. The system is basewd on microprocessor subsystems. Each subsystem comprises a set of multiprocessor system (mms) moduli. The central crate and Pravets-16 personal computer make up the kernel of the system. 9 refs.; 1 fig

  10. Higher Education Provision Using Systems Thinking Approach--Case Studies

    Science.gov (United States)

    Dhukaram, Anandhi Vivekanandan; Sgouropoulou, Cleo; Feldman, Gerald; Amini, Ardavan

    2018-01-01

    The purpose of this paper is to highlight the complexities involved in higher education provision and how systems thinking and socio-technical systems (STS) thinking approach can be used to understand the education ecosystem. Systems thinking perspective is provided using two case studies: the development of European Learner Mobility (EuroLM)…

  11. Free – bass accordion in modern educational systems

    OpenAIRE

    Algin, Sergei

    2012-01-01

    The purpose of the work – to prove the advantages of the introduction of accordion with system of Kravtsov in modern educational systems. Are used practical methods. Conclusion: The accordion with a system of Kravtsov anticipates an interesting perspective in piano accordion – bayan culture and education.

  12. Features and Historical Aspects of the Philippines Educational System

    Science.gov (United States)

    Musa, Sajid; Ziatdinov, Rushan

    2012-01-01

    This article deals with the features of the Philippine educational system. Additionally, brief and concise information will be given on how the educational system came into existence, the organization and the structure of the system itself. This paper also tackles the obstacles and problems observed in the past and up to the present, and gives…

  13. The evolution of educational information systems and nurse faculty roles.

    Science.gov (United States)

    Nelson, Ramona; Meyers, Linda; Rizzolo, Mary Anne; Rutar, Pamela; Proto, Marcia B; Newbold, Susan

    2006-01-01

    Institutions of higher education are purchasing and/or designing sophisticated administrative information systems to manage such functions as the application, admissions, and registration process, grants management, student records, and classroom scheduling. Although faculty also manage large amounts of data, few automated systems have been created to help faculty improve teaching and learning through the management of information related to individual students, the curriculum, educational programs, and program evaluation. This article highlights the potential benefits that comprehensive educational information systems offer nurse faculty.

  14. Governing education systems: International trends and main topics

    OpenAIRE

    Stanković Dejan

    2010-01-01

    The paper presents different approaches and international trends in governing education systems and analyses the causes of the perceived convergence of education policies in this field. An overview of the situation in countries throughout the world indicates an increasingly greater mutual similarity in governing education systems, especially when it comes to insisting on the following: searching for balance in (de)centralization of the system, increasing school autonomy, reinforcing the role ...

  15. THE INFLUENCES OF ROMANIAN EDUCATIONAL SYSTEM TRANSFORMATIONS ON

    Directory of Open Access Journals (Sweden)

    MUSCALU EMANOIL

    2015-10-01

    Full Text Available The educational system operates in an increasingly globalized environment, constantly changing and characterized by increasing competition to attract talent, as well as by the emergence of new applications. The appreciation of knowledge in the world is seen as an opportunity, but also a major challenge, especially for Romanian educational system which has seen many changes in the last years and its inability to attract talented people to work in the educational system.

  16. Effect of yogic education system and modern education system on memory

    Directory of Open Access Journals (Sweden)

    Rangan R

    2009-01-01

    Full Text Available Background/Aim: Memory is more associated with the temporal cortex than other cortical areas. The two main components of memory are spatial and verbal which relate to right and left hemispheres of the brain, respectively. Many investigations have shown the beneficial effects of yoga on memory and temporal functions of the brain. This study was aimed at comparing the effect of one Gurukula Education System (GES school based on a yoga way of life with a school using the Modern Education System (MES on memory. Materials and Methods: Forty nine boys of ages ranging from 11-13 years were selected from each of two residential schools, one MES and the other GES, providing similar ambiance and daily routines. The boys were matched for age and socioeconomic status. The GES educational program is based around integrated yoga modules while the MES provides a conventional modern education program. Memory was assessed by means of standard spatial and verbal memory tests applicable to Indian conditions before and after an academic year. Results: Between groups there was matching at start of the academic year, while after it the GES boys showed significant enhancement in both verbal and visual memory scores than MES boys (P < 0.001, Mann-Whitney test. Conclusions: The present study showed that the GES meant for total personality development adopting yoga way of life is more effective in enhancing visual and verbal memory scores than the MES.

  17. Effect of yogic education system and modern education system on memory.

    Science.gov (United States)

    Rangan, R; Nagendra, Hr; Bhat, G Ramachandra

    2009-07-01

    Memory is more associated with the temporal cortex than other cortical areas. The two main components of memory are spatial and verbal which relate to right and left hemispheres of the brain, respectively. Many investigations have shown the beneficial effects of yoga on memory and temporal functions of the brain. This study was aimed at comparing the effect of one Gurukula Education System (GES) school based on a yoga way of life with a school using the Modern Education System (MES) on memory. Forty nine boys of ages ranging from 11-13 years were selected from each of two residential schools, one MES and the other GES, providing similar ambiance and daily routines. The boys were matched for age and socioeconomic status. The GES educational program is based around integrated yoga modules while the MES provides a conventional modern education program. Memory was assessed by means of standard spatial and verbal memory tests applicable to Indian conditions before and after an academic year. Between groups there was matching at start of the academic year, while after it the GES boys showed significant enhancement in both verbal and visual memory scores than MES boys (P < 0.001, Mann-Whitney test). The present study showed that the GES meant for total personality development adopting yoga way of life is more effective in enhancing visual and verbal memory scores than the MES.

  18. The current medical education system in the world.

    Science.gov (United States)

    Nara, Nobuo; Suzuki, Toshiya; Tohda, Shuji

    2011-07-04

    To contribute to the innovation of the medical education system in Japan, we visited 35 medical schools and 5 institutes in 12 countries of North America, Europe, Australia and Asia in 2008-2010 and observed the education system. We met the deans, medical education committee and administration affairs and discussed about the desirable education system. We also observed the facilities of medical schools.Medical education system shows marked diversity in the world. There are three types of education course; non-graduate-entry program(non-GEP), graduate-entry program(GEP) and mixed program of non-GEP and GEP. Even in the same country, several types of medical schools coexist. Although the education methods are also various among medical schools, most of the medical schools have introduced tutorial system based on PBL or TBL and simulation-based learning to create excellent medical physicians. The medical education system is variable among countries depending on the social environment. Although the change in education program may not be necessary in Japan, we have to innovate education methods; clinical training by clinical clerkship must be made more developed to foster the training of the excellent clinical physicians, and tutorial education by PBL or TBL and simulation-based learning should be introduced more actively.

  19. The Greek Education System, Brussels 1986.

    Science.gov (United States)

    EURYDICE Central Unit, Brussels (Belgium).

    The educational policy of the Greek government rests on the basic assumption that education is a social good and something to which every citizen has a right. The state has an obligation to ensure this provision for every young person with the same level and quality of preparation. This brief but full description of the state educational system…

  20. Education system and teacher training in India

    African Journals Online (AJOL)

    RPO

    elementary education, followed by secondary and higher secondary education of two years duration each. The entry ... which would later play an important role in his success at school work and also his personal life ... The academic qualification for the entry in to a college of education is a bachelor degree in any one of the ...

  1. Frontiers in transport phenomena research and education: Energy systems, biological systems, security, information technology and nanotechnology

    Energy Technology Data Exchange (ETDEWEB)

    Bergman, T.L.; Faghri, A. [Department of Mechanical Engineering, The University of Connecticut, Storrs, CT 06269-3139 (United States); Viskanta, R. [School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088 (United States)

    2008-09-15

    A US National Science Foundation-sponsored workshop entitled ''Frontiers in Transport Phenomena Research and Education: Energy Systems, Biological Systems, Security, Information Technology, and Nanotechnology'' was held in May of 2007 at the University of Connecticut. The workshop provided a venue for researchers, educators and policy-makers to identify frontier challenges and associated opportunities in heat and mass transfer. Approximately 300 invited participants from academia, business and government from the US and abroad attended. Based upon the final recommendations on the topical matter of the workshop, several trends become apparent. A strong interest in sustainable energy is evident. A continued need to understand the coupling between broad length (and time) scales persists, but the emerging need to better understand transport phenomena at the macro/mega scale has evolved. The need to develop new metrology techniques to collect and archive reliable property data persists. Societal sustainability received major attention in two of the reports. Matters involving innovation, entrepreneurship, and globalization of the engineering profession have emerged, and the responsibility to improve the technical literacy of the public-at-large is discussed. Integration of research thrusts and education activities is highlighted throughout. Specific recommendations, made by the panelists with input from the international heat transfer community and directed to the National Science Foundation, are included in several reports. (author)

  2. The contribution of Diamond Light Source to the study of strongly correlated electron systems and complex magnetic structures.

    Science.gov (United States)

    Radaelli, P G; Dhesi, S S

    2015-03-06

    We review some of the significant contributions to the field of strongly correlated materials and complex magnets, arising from experiments performed at the Diamond Light Source (Harwell Science and Innovation Campus, Didcot, UK) during the first few years of operation (2007-2014). We provide a comprehensive overview of Diamond research on topological insulators, multiferroics, complex oxides and magnetic nanostructures. Several experiments on ultrafast dynamics, magnetic imaging, photoemission electron microscopy, soft X-ray holography and resonant magnetic hard and soft X-ray scattering are described. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

  3. EDUCATION SYSTEMS AND ACADEMIC SATISFACTION: A Study on Rural and Urban Students of Traditional Vs Open Education System in India

    Directory of Open Access Journals (Sweden)

    Shashi SINGH,

    2012-07-01

    Full Text Available A satisfaction and dissatisfaction level within an individual influences the motivation level and his/her performance throughout the life. When an individual is satisfied with his/her work, he/she gets pleasure and feels motivated. Obtaining satisfaction from their education system is very important for students as this will lead to better learning possibilities. This paper aims to compare the level of academic satisfaction among the students of Traditional Education System and Open Education System. This paper also investigates academic satisfaction of urban and rural based students and comparing them over traditional (Urban: 110; Rural: 90, and open (Urban: 80; Rural: 71 education system. Statistical tests demonstrate that there is significant difference in the level of academic satisfaction among the students of Open Education System (OES and Traditional Education System (TES.

  4. The Structure of the Managerial System of Higher Education's Development

    Science.gov (United States)

    Levina, Elena Y.; Kutuev, Ruslan A.; Balakhnina, Lidia V.; Tumarov, Konstantin B.; Chudnovskiy, Alexey D.; Shagiev, ?ulat V.

    2016-01-01

    The research urgency is caused by necessity of planning regulation of higher education development at all levels of management. The purpose of this article is to develop the structure of a control system of higher education development, the Foundation of which is understanding of the quality of higher education as factor for development of the…

  5. Constructing a Patient Education System: A Performance Technology Project

    Science.gov (United States)

    Bell, Edith E.

    2009-01-01

    The purpose of the patient education system described here was to distribute patient education material to and within medical practices managed by a small medical practice management company. The belief was that patient education opportunities improved health care outcomes and increased patient participation in health care decisions and compliance…

  6. Flowers in the Cracks: War, Peace and Japan's Education System

    Science.gov (United States)

    Gibson, Ian

    2011-01-01

    A major role of education is to socialise individuals into being responsible and productive citizens. It is aimed at preparing people for the workforce and for participating in the public life of the nation. Educational systems are complex bureaucracies based on particular educational and social theories and philosophies. This paper is concerned…

  7. Linking the dual system with higher education in Denmark

    DEFF Research Database (Denmark)

    Jørgensen, Christian Helms

    2013-01-01

    alley’. This weakness is closely related to the strengths of the dual system. The dual system is successful in giving direct and fast access to employment for the students, and this contributes to a very low rate of youth unemployment in Denmark. Students who complete a programme in the dual system......As more than half of every new generation of youth enter higher education in Den-mark the strength of the dual system of vocational education is becoming its weakness. Completing a programme in the dual system doesn’t give access to higher ed-ucation, and the system is increasingly seen as a ‘blind...

  8. The strong commitment. The government of Vietnam has invested nearly 30% of its budget for all the social programs such as education, health, population and family planning.

    Science.gov (United States)

    Nguyen Phuong Lan

    1995-01-01

    Population and family planning activities first came into being in Vietnam in 1963 after a decree on fertility control was issued by the Council of Government on December 26, 1961. The Ministry of Health (MOH) was in charge of such activities, using its own network to provide services and mass organizations to garner public support for the acceptance of family planning. On May 13, 1979, the council transferred family planning activities to the new Committee for Maternal and Child Protection. However, that committee was soon disbanded, and family planning activities were returned to the auspices of the MOH. The National Committee for Population and Family Planning was created in 1984 under the MOH with the goal of mobilizing all social forces in population and family planning activities. Decrees of October 1988 and March 1989, and in 1991 and 1993, strengthened measures to reduce population growth and ensure that adequate family planning methods were available to couples. Vietnam's Population and Family Planning Program has strong political support. Indeed, the government of Vietnam has invested almost 30% of its budget into education, health, and population and family planning programs.

  9. Strong low-pass filtering effects on water vapour flux measurements with closed-path eddy correlation systems

    DEFF Research Database (Denmark)

    Ibrom, Andreas; Dellwik, Ebba; Flyvbjerg, Henrik K.

    2007-01-01

    forest in Soro, Zealand, Denmark, amounted on average to 42% of the measured flux, while it was only 4% for the CO2 flux, which was measured with the same EC system. We recommend using the described method to correct water vapour fluxes measured in any closed-path EC system for unintended low......Turbulent water vapour fluxes measured with closed-path eddy correlation (EC) systems are unintentionally low-pass filtered by the system in a manner that varies with environmental conditions. Why and how is described here. So is the practical method that systematically corrects long-term flux...... datasets for this substantial measurement error. In contrast to earlier studies, a large number of spectra and raw data have been used in the analysis to define the low-pass filtering characteristic of the EC system. This revealed that the cut-off frequency of the closed-path EC system for water vapour...

  10. Calculation of the zero-field splitting D and g(perp)parameters in EPR for d3 spin systems in strong and moderate axial fields

    NARCIS (Netherlands)

    Kool, Th.W.; Bollegraaf, B.

    2010-01-01

    Numerical and analytical methods are used to investigate the calculation of the zero field splitting |2D| and g(perp) parameters in EPR for octahedrally surrounded d3 spin systems (S = 3/2) in strong and moderate axial crystal fields (|D|>=h{\

  11. Property Values Associated with the Failure of Individual Links in a System with Multiple Weak and Strong Links.

    Energy Technology Data Exchange (ETDEWEB)

    Helton, Jon C. [Arizona State Univ., Tempe, AZ (United States); Brooks, Dusty Marie [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sallaberry, Cedric Jean-Marie. [Engineering Mechanics Corp. of Columbus, OH (United States)

    2018-02-01

    Representations are developed and illustrated for the distribution of link property values at the time of link failure in the presence of aleatory uncertainty in link properties. The following topics are considered: (i) defining properties for weak links and strong links, (ii) cumulative distribution functions (CDFs) for link failure time, (iii) integral-based derivation of CDFs for link property at time of link failure, (iv) sampling-based approximation of CDFs for link property at time of link failure, (v) verification of integral-based and sampling-based determinations of CDFs for link property at time of link failure, (vi) distributions of link properties conditional on time of link failure, and (vii) equivalence of two different integral-based derivations of CDFs for link property at time of link failure.

  12. Participative Evaluation for Forming Higher Education Policy: The National Higher Education Planning System.

    Science.gov (United States)

    Mercado del Collado, Ricardo

    Higher education planning in Mexico is discussed, with attention to: conceptual characteristics of Mexico's higher education planning system; relationships among the national, regional, state, and institutional planning levels; and design and operation of the Comprehensive Program for the Development of Higher Education. Responsibilities of…

  13. Reform of the Educational Finance System as the Foundation of Compulsory Education

    Science.gov (United States)

    Suetomi, Kaori; Murray, Nadezhda

    2014-01-01

    The conditions required for a reform of the educational finance system as the foundation of compulsory education are 1) devolution to schools and introduction of national standards in order to deal with "individual equality" while compensating for the insufficiency of "aspectual equality," and 2) dealing with educational needs…

  14. Urban and rural educational system disparities in Romania

    Directory of Open Access Journals (Sweden)

    Mihaela Roberta STANEF

    2013-01-01

    Full Text Available The aim of this paper is to analyze the complex multidimensional and multidisciplinary issue of the educational system in more details and to deal with conceptions, methodological approaches and the acquired knowledge, focused particularly on Romanian educational system.The mean of the paper is to present the complex issue of regional and territorial disparities in Romania. The educational system in Romania is at a crossroad. Initiated important reforms in the sector after the last 21 years – including changing the curriculum, student assessment, teacher training, funding and management module – will be continued to improve outcomes in education.

  15. Influenceof IT on School\\\\\\'s Educational Systems

    Directory of Open Access Journals (Sweden)

    Ali Biranvand

    2010-12-01

    Full Text Available Nowadays by emergence of novel educational technologies especially access to internet among the population in schools as well as their being influenced by global and non-native cultures, a sithuattion has appeared that makese educational system choose novel functions for itself corresponding to current needs. Selection and reaching novel functions in turn requires a new approach towards educational system. What introduces us novel educational systems as a modern educational technology rather than a challenge in an educational system is the effects of these technologies in employing teaching aids in classrooms with the aim of reinforcement of the students’ learning, which has been confirmed by numerous studies. Through elucidation of student-oriented approach as a modern approach in educational system, the present paper studies the shift from traditional education to modern education and explains the existing barriers as well as the studies carried out so far. We mention that the only way to reach student-oriented status and use potential talents of students in research is to utilize modern communication and information technologies in educational processes.

  16. A Concept of Modeling a Health Manpower Educational System

    OpenAIRE

    Bojanczyk, M.; Rokicki, W.

    1982-01-01

    The paper presents some mathematical concepts of modeling a health manpower educational system. The importance of manpower resources, i.e., doctors, nurses, and other supporting staff, in the health services delivery process is widely recognized. Therefore, the research on resource supply models analyzing health manpower education was undertaken. First, the general structure of the health manpower educational system (HMES) was presented. Next the adapted methodology of modeling was descr...

  17. The system of social partnership in educational practice

    OpenAIRE

    Garanzha N.

    2016-01-01

    This article presents the system of social partnership in education. The author gives a detailed description of the system of social partnership in educational practice at different levels. Based on the analysis of the definition of “social partnership”, the author attempts an interpretation of the concept. As a result, the theoretical–methodological analysis of psychological and pedagogical literature the author comes to the conclusion that social partnership in educational practice is a com...

  18. A Systemic Approach: The Ultimate Choice for Gifted Education

    Science.gov (United States)

    Tao, Ting; Shi, Jiannong

    2012-01-01

    In "Towards a systemic theory of gifted education," A. Ziegler and S.N. Phillipson have proposed a systemic approach to gifted education. For this approach, they built a model that they call an "actiotope" model. As they explained in the article, an actiotope consists of the acting individual and the environment with which he or she interacts. The…

  19. The New Student Loan System in Chile's Higher Education

    Science.gov (United States)

    Larrain, Christian; Zurita, Salvador

    2008-01-01

    Chile's higher education system stands out as being one of the most privatized and open to the market in the world. Recently, the Chilean Congress passed Law #20.027 of 2005, which provides the legal framework for the creation of a student loan system guaranteed both by the State and by higher education institutions (HEIs), financed by the private…

  20. Value System and Standard of Education in Nigerian Third ...

    African Journals Online (AJOL)

    Nekky Umera

    university education in third generation universities in South-South geopolitical zone. It sought to answer ... Value System and Standard of Education in Nigerian Third Generation Universities... Rogers defined value as the ..... female counterparts with positive value system is upheld as the probability was greater than alpha.

  1. The Almajiri educational system in Nigeria: cost and challenges ...

    African Journals Online (AJOL)

    This paper highlights the cost and challenges of the Almajiri system of education in Nigeria. The paper theoretically examines pertinent issues arising from its conduct and administration. Although the Almajiri system of education in Nigeria has attracted very large number of children in the Northern part of the country, it has ...

  2. The vocational education and training system in Denmark

    DEFF Research Database (Denmark)

    Cort, Pia; Wiborg, Susanne

    2009-01-01

    Analysis of developments in vocational education and training systems in Australia, Canada, Denmark, France, Germany, Korea, Mexico, Morocco, the UK and the US.......Analysis of developments in vocational education and training systems in Australia, Canada, Denmark, France, Germany, Korea, Mexico, Morocco, the UK and the US....

  3. Malaysian Education Index (MEI): An Online Indexing and Repository System

    Science.gov (United States)

    Kabilan, Muhammad Kamarul; Ismail, Hairul Nizam; Yaakub, Rohizani; Yusof, Najeemah Mohd; Idros, Sharifah Noraidah Syed; Umar, Irfan Naufal; Arshad, Muhammad Rafie Mohd.; Idrus, Rosnah; Rahman, Habsah Abdul

    2010-01-01

    This "Project Sheet" describes an on-going project that is being carried out by a group of educational researchers, computer science researchers and librarians from Universiti Sains Malaysia, Penang. The Malaysian Education Index (MEI) has two main functions--(1) Online Indexing System, and (2) Online Repository System. In this brief…

  4. Systemic Chemical Education Reform [SCER] in the global era ...

    African Journals Online (AJOL)

    Systemic chemical education reform [SCER] has gained a great importance internationally due to the competitive job market and global market economy which create global challenges and stresses on our current educational system. SCER is a dynamic process that requires constant communication, evaluation and has ...

  5. TESE--Thesaurus for Education Systems in Europe. English Version

    Science.gov (United States)

    Eurydice, 2009

    2009-01-01

    The Thesaurus for Education Systems in Europe (TESE-2009 edition) is a multilingual thesaurus and a robust information retrieval tool focusing on European education systems and policies. It is specifically designed to cover the indexation needs of the Eurydice network and to facilitate information retrieval on Eurydice's central website. It can…

  6. Learning from the Field : Innovating China's Higher Education System

    International Development Research Centre (IDRC) Digital Library (Canada)

    Learning from the Field : Innovating China's Higher Education System. Couverture du livre Learning from the Field : Innovating China's Higher Education System. Directeur(s):. Ronnie Vernooy, Li Xiaoyun, Xu Xiuli, Lu Min, et Qi Gubo. Maison(s) d'édition: Foundation Book, CRDI. 15 avril 2008. ISBN : 9788175966017.

  7. Education System Reform in China after 1978: Some Practical Implications

    Science.gov (United States)

    Sun, Miantao

    2010-01-01

    Purpose: This paper aims to provide an overview of education system reform in China since 1978, and its practical implications. Design/methodology/approach: Data were collected from literature review and interview. An overview of education system reform and its practical implications was found through data analysis. Findings: There has been two…

  8. (Dysfunctional relations between knowledge quality and education system

    Directory of Open Access Journals (Sweden)

    Avramović Zoran

    2011-01-01

    Full Text Available Functional analysis of the relation between knowledge and education system from the viewpoint of quality is used in the paper. It is proved that it is not necessarily true that there is a correspondence between knowledge quality and construction of the education system, i.e. that the former quality is not an inevitable condition of the latter. In the first part of the paper, we distinguish the concept of quality from non-quality knowledge. Out of 19 indicators, five knowledge qualities are normative (exceptional sense, and the others descriptive (specific sense characteristics. In the second part, the conceptual approach to education system focuses on its (dysfunctional and non-functional connections. The tradition of national knowledge, the character of social relations established between the actors within the system and the influence of implicit knowledge on teacher and student actions in education system are discussed. All these factors can influence positively and negatively the direction and content of knowledge quality in education system. Knowledge quality in school curricula and textbooks may be ensured and then (not realized due to the influence of traditional, social and implicit factors on educational interaction. The concept of constellation is used to explain the favorable and unfavorable relation between knowledge quality and education system. In the concluding part, the author argues that education system cannot ensure complete realization of knowledge quality since it is, to a considerable extent, conditioned by school and non-school factors.

  9. The place of giftedness in the Nigerian education system | Goodluck ...

    African Journals Online (AJOL)

    This paper had made serious effort in defining the concept “giftedness”. It went further to discuss the place of giftedness in Nigerian education system in the light of the recommendation of the national policy on education, disregard for merit in our society, the menace of our quota system syndrome, and tribal sentiments in the ...

  10. Learning from the Field : Innovating China's Higher Education System

    International Development Research Centre (IDRC) Digital Library (Canada)

    2008-04-15

    Learning from the Field : Innovating China's Higher Education System. Couverture du livre Learning from the Field : Innovating China's Higher Education System. Editor(s):. Ronnie Vernooy, Li Xiaoyun, Xu Xiuli, Lu Min, et Qi Gubo. Publisher(s):. Foundation Book, CRDI. April 15, 2008. ISBN: 9788175966017. 260 pages.

  11. Evaluation Criteria for the Educational Web-Information System

    Science.gov (United States)

    Seok, Soonhwa; Meyen, Edward; Poggio, John C.; Semon, Sarah; Tillberg-Webb, Heather

    2008-01-01

    This article addresses how evaluation criteria improve educational Web-information system design, and the tangible and intangible benefits of using evaluation criteria, when implemented in an educational Web-information system design. The evaluation criteria were developed by the authors through a content validation study applicable to…

  12. Adapting the SEPIA system to the educational context

    OpenAIRE

    Thai , Le Vinh; Ginon , Blandine; Jean-Daubias , Stéphanie; Lefevre , Marie

    2014-01-01

    International audience; The SEPIA system allows creating assistance systems that meet technical assistance needs. In this paper, we aim at the exploitation of SEPIA in the educational context by confronting it to pedagogical assistance needs. This exploitation shows the limitations in the SEPIA system: complex description of rules by pedagogical designers, lack of domain knowledge. Thus, we present our patterns that facilitate the creation of assistance systems in the educational context and ...

  13. Why decision support systems are important for medical education.

    Science.gov (United States)

    Konstantinidis, Stathis Th; Bamidis, Panagiotis D

    2016-03-01

    During the last decades, the inclusion of digital tools in health education has rapidly lead to a continuously enlarging digital era. All the online interactions between learners and tutors, the description, creation, reuse and sharing of educational digital resources and the interlinkage between them in conjunction with cheap storage technology has led to an enormous amount of educational data. Medical education is a unique type of education due to accuracy of information needed, continuous changing competences required and alternative methods of education used. Nowadays medical education standards provide the ground for organising the educational data and the paradata. Analysis of such education data through education data mining techniques is in its infancy, but decision support systems (DSSs) for medical education need further research. To the best of our knowledge, there is a gap and a clear need for identifying the challenges for DSSs in medical education in the era of medical education standards. Thus, in this Letter the role and the attributes of such a DSS for medical education are delineated and the challenges and vision for future actions are identified.

  14. Opening Up: Higher Education Systems in Global Perspective

    NARCIS (Netherlands)

    van der Wende, M.C.

    2017-01-01

    Globalisation has strongly influenced higher education during the last decades. As in many other sectors, this has generated contradictory outcomes. Enhanced competition for reputation, talent, and resources was driven by the paradigm of the global knowledge economy and fuelled by global rankings,

  15. Planning for Online Education: A Systems Model

    Science.gov (United States)

    Picciano, Anthony G.

    2015-01-01

    The purpose of this article is to revisit the basic principles of technology planning as applied to online education initiatives. While not meant to be an exhaustive treatment of the topic, the article is timely because many colleges and universities are considering the development and expansion of online education as part of their planning…

  16. Examination malpractices in Nigerian educational system: Causes ...

    African Journals Online (AJOL)

    There has been much 'hue and cry' concerning the fall in the standard of Education in Nigeria. Arguments being raised by those in support of this assertion include among others: the myopic academic capability and standard being displayed by students of today's educational institutions vis-à-vis their counterparts of ...

  17. Strongly seasonal Proterozoic glacial climate in low palaeolatitudes: Radically different climate system on the pre-Ediacaran Earth

    Directory of Open Access Journals (Sweden)

    George E. Williams

    2016-07-01

    Full Text Available Proterozoic (pre-Ediacaran glaciations occurred under strongly seasonal climates near sea level in low palaeolatitudes. Metre-scale primary sand wedges in Cryogenian periglacial deposits are identical to those actively forming, through the infilling of seasonal (winter thermal contraction-cracks in permafrost by windblown sand, in present-day polar regions with a mean monthly air temperature range of 40 °C and mean annual air temperatures of −20 °C or lower. Varve-like rhythmites with dropstones in Proterozoic glacial successions are consistent with an active seasonal freeze–thaw cycle. The seasonal (annual oscillation of sea level recorded by tidal rhythmites in Cryogenian glacial successions indicates a significant seasonal cycle and extensive open seas. Palaeomagnetic data determined directly for Proterozoic glacial deposits and closely associated rocks indicate low palaeolatitudes: Cryogenian deposits in South Australia accumulated at ≤10°, most other Cryogenian deposits at 54° during Proterozoic low-latitude glaciations, whereby the equator would be cooler than the poles, on average, and global seasonality would be greatly amplified.

  18. THE INSPECTION LIKE QUALITY FACTOR IN THE EDUCATIONAL SYSTEM

    Directory of Open Access Journals (Sweden)

    Joaquín Oliver Pozo

    2016-07-01

    Full Text Available The Inspection, along with other educational sectors, shapes from complementarity, coordination and communication between them, the architecture of the educational system. Each has its specificity and its own space in Education. The aim of this study is simply identify and define the location of the inspection into the education system, between educational administration and schools, and the "why" (their mission, and consistent with it, "which makes" (its functions and assignations. Mission and functions that take place in schools, at the sight of the Educational Administration and the society, through the Inspectorate as organization. Of the principles underlying this organization and of the communication, training, and technical and professional exchange that drives through their organizational structures, will depend its leadership in Education and to be seen as a quality factor.

  19. Plasmons in strong superconductors

    International Nuclear Information System (INIS)

    Baldo, M.; Ducoin, C.

    2011-01-01

    We present a study of the possible plasmon excitations that can occur in systems where strong superconductivity is present. In these systems the plasmon energy is comparable to or smaller than the pairing gap. As a prototype of these systems we consider the proton component of Neutron Star matter just below the crust when electron screening is not taken into account. For the realistic case we consider in detail the different aspects of the elementary excitations when the proton, electron components are considered within the Random-Phase Approximation generalized to the superfluid case, while the influence of the neutron component is considered only at qualitative level. Electron screening plays a major role in modifying the proton spectrum and spectral function. At the same time the electron plasmon is strongly modified and damped by the indirect coupling with the superfluid proton component, even at moderately low values of the gap. The excitation spectrum shows the interplay of the different components and their relevance for each excitation modes. The results are relevant for neutrino physics and thermodynamical processes in neutron stars. If electron screening is neglected, the spectral properties of the proton component show some resemblance with the physical situation in high-T c superconductors, and we briefly discuss similarities and differences in this connection. In a general prospect, the results of the study emphasize the role of Coulomb interaction in strong superconductors.

  20. From System Expansion to System Contraction: Access to Higher Education in Poland

    Science.gov (United States)

    Kwiek, Marek

    2013-01-01

    Access to higher education in Poland is changing due to the demography of smaller cohorts of potential students. Following a demand-driven educational expansion after the collapse of communism in 1989, the higher education system is now contracting. Such expansion/contraction and growth/decline in European higher education has rarely been…

  1. Educators' insights in using chronicle diabetes: a data management system for diabetes education.

    Science.gov (United States)

    Wang, Jing; Siminerio, Linda M

    2013-01-01

    Diabetes educators lack data systems to monitor diabetes self-management education processes and programs. The purpose of the study is to explore diabetes educator's insights in using a diabetes education data management program: the Chronicle Diabetes system. We conducted 1 focus group with 8 diabetes educators who use the Chronicle system in western Pennsylvania. The focus group was audiotaped and transcribed verbatim. Themes were categorized according to system facilitators and barriers in using Chronicle. Educators report 4 system facilitators and 4 barrier features. System facilitators include (1) ability to extract data from Chronicle for education program recognition, (2) central location for collecting and documenting all patient and education data, (3) capability to monitor behavioral goal setting and clinical outcomes, and (4) use of a patient snapshot report that automatically summarizes behavioral goal setting and an education plan. Barriers reported are (1) initially time-consuming for data entry, (2) Health Insurance Portability and Accountability Act privacy concerns for e-mailing or downloading report, (3) need for special features (e.g., ability to attach a food diary), and (4) need to enhance existing features to standardize goal-setting process and incorporate psychosocial content. Educators favor capabilities for documenting program requirements, goal setting, and patient summaries. Barriers that need to be overcome are the amount of time needed for data entry, privacy, and special features. Diabetes educators conclude that a data management system such as Chronicle facilitates the education process and affords ease in documentation of meeting diabetes self-management education standards and recognition requirements.

  2. Establishment and issues of new educational system by nutrition teachers.

    Science.gov (United States)

    Maruya, Nobuko; Kaneda, Masayo; Namikawa, Shintaro; Nakajima, Tomoko; Tamon, Takako; Murai, Yoko

    2005-08-01

    The Japanese school lunch system, which has over 100 y of history, has gained world attention for its well-developed and steady system, healthy Japanese-style menus including rice, and educational programs utilizing the school lunch system. Meanwhile, risk factors of health among students have been continuously worsening for the past dozen years or so. Therefore, Japan had hastened to develop better educational programs utilizing the school lunch and nutritional teachers. Under such circumstances, the Japanese Diet passed a bill to amend the School Education Law (hereinafter called the Amendment) which includes the establishment of an educational system by nutrition teachers in May, 2004. This system will be enforced in April, 2005. This system by nutrition teachers in Japan is well organized in both the legal and administrative senses and is attracting domestic and international attention as an example of an educational measure to improve the dietary life of students. The reason for this article in English is the additional intention of enlightening other countries by showing the political promotion problems of educational administration agencies, educational contents of nutrition teachers and some issues of the new educational system by nutrition teachers.

  3. TEACHERS TRAINING FOR EDUCATION OF TEENAGE MOBILITY IN THE SYSTEM OF ADDITIONAL PROFESSIONAL EDUCATION

    Directory of Open Access Journals (Sweden)

    Yuliya Vadimovna Naidanova

    2017-06-01

    Full Text Available Purpose. The article is devoted to the problem of teachers training for education of teenage mobility in the system of additional professional education. The author’s aim is to describe the model of teachers training for education of teenage mobility and the complex of organizational-pedagogical conditions for its implementation. Methods. The basis of the research is the theoretical (theoretical analysis and synthesis of information contained in the pedagogical, psychological literature about the problem of research, modeling research methods. Results. The results of this work consist in the fact that the author gives a definition of the concept “teachers training for education of teenage mobility”, describes the model of teachers training for education of teenage mobility, which contains of an orientating, contensive-methodical and diagnostic-valuative component; stages of design and implementation of the program for education of teenage mobility; block of development and realization of mobility self-education programs; offers a complex of organizational-pedagogical conditions for implementation of model, which includes the developing of a unified information-educational environment for the educational program participants of additional professional education; pedagogical facilitation self- education for mobility of the participants; continuous feedback as the basis for organizing the productive and creative cooperation of the educational process subjects. Practical implication. The results of this research can be applied to train teachers for fulfillment of new labor functions in the system of additional professional education.

  4. A New Technique for Reducing Size of a WPT System Using Two-Loop Strongly-Resonant Inductors

    Directory of Open Access Journals (Sweden)

    Matjaz Rozman

    2017-10-01

    Full Text Available Mid-range resonant coupling-based high efficient wireless power transfer (WPT techniques have gained substantial research interest due to the number of potential applications in many industries. This paper presents a novel design of a resonant two-loop WPT technique including the design, fabrication and preliminary results of this proposal. This new design employs a compensation inductor which is combined with the transmitter and receiver loops in order to significantly scale down the size of the transmitter and receiver coils. This can improve the portability of the WPT transmitters in practical systems. Moreover, the benefits of the system enhancement are not only limited to the lessened magnitude of the T X & R X , simultaneously both the weight and the bill of materials are also minimised. The proposed system also demonstrates compatibility with the conventional electronic components such as capacitors hence the development of the T X & R X is simplified. The proposed system performance has been validated using the similarities between the experimental and simulation results. The power efficiency of the prototype circuit is found to be 93%, which is close to the efficiency reached by the conventional design. However, the weight of the transmitter and receiver inductors is now reduced by 78%, while the length of these inductors is reduced by 80%.

  5. Overview and Insights from ‘Systems Education for a Sustainable Planet’

    Directory of Open Access Journals (Sweden)

    Robert Y. Cavana

    2018-02-01

    Full Text Available An announcement by Bosch and Cavana, in Systems, called for new papers to provide updated perspectives about and fresh insights into developments that influence ‘systems education for a sustainable planet’. This paper’s objective is to provide an overview of the 14 papers that were published in the special issue, and present some insights and findings from their content. It does this by classifying the papers into five distinct themes, then analysing their content and the linkages between the themes. This process revealed that: (1 Specialised systems education at a tertiary level is predominantly at graduate level, using a diverse range of approaches; and (2 Delivering specialised systems education remains a challenge for programs that endeavour to provide an integrated and interdisciplinary learning experience. Barriers include current institutional structures and the need for students to be both big picture thinkers and detail-oriented technocrats; (3 Teaching systems approaches outside of specialised programs for students (both young and mature help to expose systems thinking to a wider demographic; (4 The strong links that exist between systems approaches and sustainability goals are increasingly being recognised. Systems education can help transition towards a sustainable planet, as it helps people appreciate that individual actions are not isolated events but contribute to an interconnected system that determines both the well-being of humans and the planet.

  6. Energy partitioning and impulse dispersion in the decorated, tapered, strongly nonlinear granular alignment: A system with many potential applications

    Science.gov (United States)

    Doney, Robert L.; Agui, Juan H.; Sen, Surajit

    2009-09-01

    Rapid absorption of impulses using light-weight, small, reusable systems is a challenging problem. An axially aligned set of progressively shrinking elastic spheres, a "tapered chain," has been shown to be a versatile and scalable shock absorber in earlier simulational, theoretical, and experimental works by several authors. We have recently shown (see R. L. Doney and S. Sen, Phys. Rev. Lett. 97, 155502 (2006)) that the shock absorption ability of a tapered chain can be dramatically enhanced by placing small interstitial grains between the regular grains in the tapered chain systems. Here we focus on a detailed study of the problem introduced in the above mentioned letter, present extensive dynamical simulations using parameters for a titanium-aluminum-vanadium alloy Ti6Al4V, derive attendant hard-sphere analyses based formulae to describe energy dispersion, and finally discuss some preliminary experimental results using systems with chrome spheres and small Nitinol interstitial grains to present the underlying nonlinear dynamics of this so-called decorated tapered granular alignment. We are specifically interested in small systems, comprised of several grains. This is because in real applications, mass and volume occupied must inevitably be minimized. Our conclusion is that the decorated tapered chain offers enhanced energy dispersion by locking in much of the input energy in the grains of the tapered chain rather than in the small interstitial grains. Thus, the present study offers insights into how the shock absorption capabilities of these systems can be pushed even further by improving energy absorption capabilities of the larger grains in the tapered chains. We envision that these scalable, decorated tapered chains may be used as shock absorbing components in body armor, armored vehicles, building applications and in perhaps even in applications in rehabilitation science.

  7. Assembly of strongly phosphorescent hetero-bimetallic and -trimetallic [2]catenane structures based on a coinage metal alkynyl system.

    Science.gov (United States)

    Chang, Xiao-Yong; Xu, Guang-Tao; Cao, Bei; Wang, Juan-Yu; Huang, Jie-Sheng; Che, Chi-Ming

    2017-11-01

    C 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 C - ligand) complex, which feature [2]catenane structures. The formation of the [2]catenane structure is significantly affected by the coinage metal ion(s) and change of the structure of the alkynyl ligand. These hetero-metallic [2]catenane structures are strongly luminescent with tunable emission λ max from 503 to 595 nm and Φ values up to 0.83.

  8. The Muslim Brotherhood and Modern Education: How Will the Muslim Brotherhood Address Egypt’s Failing Education System?

    Science.gov (United States)

    2012-09-01

    THE EGYPTIAN EDUCATION SYSTEM UNDER NASSER In July 1952, a secret society of officers led by Gamal Abdel Nasser took over the Egyptian government... Abdel Nasser assumed power in 1952, the education system of Egypt reflected the deep economic and social divisions that existed throughout the country... NASSER ................20 E. SADAT’S EDUCATION SYSTEM..............................................................23 F. MUBARAK’S EDUCATION SYSTEM

  9. The Phoenix: Vocational Education and Training in Singapore. International Comparative Study of Leading Vocational Education Systems

    Science.gov (United States)

    Tucker, Marc S.

    2012-01-01

    This is the first in a series of reports from the Center on International Education Benchmarking (CIEB) exploring the leading vocational and technical education systems from around the world to draw out what makes these systems great and what other countries can learn from them. This first report was based on a visit of several days to Singapore…

  10. PISA and High-Performing Education Systems: Explaining Singapore's Education Success

    Science.gov (United States)

    Deng, Zongyi; Gopinathan, S.

    2016-01-01

    Singapore's remarkable performance in Programme for International Student Assessment (PISA) has placed it among the world's high-performing education systems (HPES). In the literature on HPES, its "secret formula" for education success is explained in terms of teacher quality, school leadership, system characteristics and educational…

  11. Guide to the Marine Education Materials System (MEMS). Educational Series No. 22.

    Science.gov (United States)

    Gammisch, Susan C.; Lanier, James A.

    This guidebook has been prepared to orient persons wishing to use the Marine Education Materials System (MEMS), a project supported by the Office of Sea Grant, National Oceanic and Atmospheric Administration (NOAA), Department of Commerce. Entries to the system were compiled by the education staff of the Virginia Institute of Marine Science.…

  12. The education revolution on horseback I: The relation between Napoleon Bonaparte and education system characteristics

    NARCIS (Netherlands)

    Korthals, Roxanne

    2016-01-01

    Much research has been done into the emergence of mass education systems, primarily by studying the social origin of the education system, the introduction of compulsory schooling laws, or the expansion of enrolment rates. However, little is known about the origin of the characteristics of these

  13. The education revolution on horseback I : The relation between Napoleon Bonaparte and education system characteristics

    NARCIS (Netherlands)

    Korthals, R.A.

    2016-01-01

    Much research has been done into the emergence of mass education systems, primarily by studying the social origin of the education system, the introduction of compulsory schooling laws, or the expansion of enrolment rates. However, little is known about the origin of the characteristics of these

  14. Operating function tests of the PWR type RHR pump for engineering safety system under simulated strong ground excitation

    International Nuclear Information System (INIS)

    Uga, Takeo; Shiraki, Kazuhiro; Homma, Toshiaki; Inazuka, Hisashi; Nakajima, Norifumi.

    1979-08-01

    Results are described of operating function verification tests of a PWR RHR pump during an earthquake. Of the active reactor components, the PWR residual heat removal pump was chosen from view points of aseismic classification, safety function, structural complexity and past aseismic tests. Through survey of the service conditions and structure of this pump, seismic test conditions such as acceleration level, simulated seismic wave form and earthquake duration were decided for seismicity of the operating pump. Then, plans were prepared to evaluate vibration chracteristics of the pump and to estimate its aseismic design margins. Subsequently, test facility and instrumentation system were designed and constructed. Experimental results could thus be acquired on vibration characteristics of the pump and its dynamic behavior during different kinds and levels of simulated earthquake. In conclusion: (1) Stiffeners attached to the auxiliary system piping do improve aseismic performance of the pump. (2) The rotor-shaft-bearing system is secure unless it is subjected to transient disturbunces having high frequency content. (3) The motor and pump casing having resonance frequencies much higher than frequency content of the seismic wave show only small amplifications. (4) The RHR pump possesses an aseismic design margin more than 2.6 times the expected ultimate earthquake on design basis. (author)

  15. Proposal and Practice of New Education System Based on The Conventional Education System for Mechanical Design and Manufacturing

    Science.gov (United States)

    Hashimura, Shinji; Hiroo, Yasuaki; Tanaka, Hiroshi; Nakao, Tetsuya; Harada, Toyomitsu; Nakatake, Yasuhito; Fujita, Masatoshi; Matsui, Satoru

    A new education system for the mechanical design and manufacturing based on the conventional education system has been proposed. The proposed system is considered as a main subject of the specialized subjects of the mechanical engineering department in Kurume National College of Technology. In the proposed system, students could master the way to use 3D-CAD due to making 3D models of a hand-powered winch. The students also learned way of the optimum design for strength due to making the winch handle using CAE/CAM and due to estimating its strength. As the results of analysis of education system, it was seen that the education of the conventional manual drawing and graphics is very important for the new design and manufacturing education.

  16. IMPROVEMENT OF QUALITY ASSURANCE SYSTEM ACTIVITIES OF HIGHER EDUCATION INSTITUTIONS

    Directory of Open Access Journals (Sweden)

    Z. M. Sultalieva

    2016-01-01

    Full Text Available Abstract. The aim of the article is the improvement of quality assessment system of higher education institutions in the aspect of management. The problems of quality improvement are revealed and classified. The analysis of criteria assessment sets used to define the efficiency of higher education institutions activity is carried out. The components of quality of higher education institutions activity are specified. The structural model of quality assessment system of higher education institutions activity is offered. The analysis of macro environment of a university based on the method of strategic management is carried out, i.e. PEST analysis. As a result of the research a new model of macro criteria model of quality assessment system of higher education institutions, characterizing quality management as an approach to university efficiency is offered, moreover, this system can define the level of its competitiveness in the aspect of quality management. 

  17. Development of an advanced educational system using AI techniques

    International Nuclear Information System (INIS)

    Yoshimura, Seiichi

    1990-01-01

    This paper describes an advanced educational system that realizes effective education using AI techniques. The system is composed of three devices. One is a knowledge-processing computer that evaluates the operator's knowledge level and presents educational materials. Another is a computer for displaying transients. The other is a computer for voice input and output. The educational materials utilize cause-and-effect relationships. The relationships enable to perform effective education by pointing out the parts the operator failed to understand. An evaluation test was performed by actually operating the system. As a result, the system's fundamental characteristics, such as the ease of understanding the relationships, and the usefulness of the advanced evaluation of the operator's knowledge level, were evaluated highly. (author)

  18. System design projects for undergraduate design education

    Science.gov (United States)

    Batill, S. M.; Pinkelman, J.

    1993-01-01

    Design education has received considerable in the recent past. This paper is intended to address one aspect of undergraduate design education and that is the selection and development of the design project for a capstone design course. Specific goals for a capstone design course are presented and their influence on the project selection are discussed. The evolution of a series of projects based upon the design of remotely piloted aircraft is presented along with students' perspective on the capstone experience.

  19. Lived Experiences of Educational Leaders in Iranian Medical Education System: A Qualitative Study.

    Science.gov (United States)

    Sohrabi, Zohreh; Kheirkhah, Masoomeh; Vanaki, Zohreh; Arabshahi, Kamran Soltani; Farshad, Mohammad Mahdi; Farshad, Fatemeh; Farahani, Mansoureh Ashgale

    2015-12-18

    High quality educational systems are necessary for sustainable development and responding to the needs of society. In the recent decades, concerns have increased on the quality of education and competency of graduates. Since graduates of medical education are directly involved with the health of society, the quality of this system is of high importance. Investigation in the lived experience of educational leaders in the medical education systems can help to promote its quality. The present research examines this issue in Iran. The study was done using content-analysis qualitative approach and semi-structured interviews. The participants included 26 authorities including university chancellors and vice-chancellors, ministry heads and deputies, deans of medical and basic sciences departments, education expert, graduates, and students of medical fields. Sampling was done using purposive snowball method. Data were analyzed using conventional content analysis. Five main categories and 14 sub-categories were extracted from data analysis including: quantity-orientation, ambiguity in the trainings, unsuitable educational environment, personalization of the educational management, and ineffective interpersonal relationship. The final theme was identified as "Education in shadow". Personalization and inclusion of personal preferences in management styles, lack of suitable grounds, ambiguity in the structure and process of education has pushed medical education toward shadows and it is not the first priority; this can lead to incompetency of medical science graduates.

  20. Adaptive Systems in Education: A Review and Conceptual Unification

    Science.gov (United States)

    Wilson, Chunyu; Scott, Bernard

    2017-01-01

    Purpose: The purpose of this paper is to review the use of adaptive systems in education. It is intended to be a useful introduction for the non-specialist reader. Design/methodology/approach: A distinction is made between intelligent tutoring systems (ITSs) and adaptive hypermedia systems (AHSs). The two kinds of system are defined, compared and…

  1. Near East University Learning Management System Based Distant Education

    Science.gov (United States)

    Cavus, Nadire; Uzunboylu, Huseyin; Ibrahim, Dogan

    2005-01-01

    In order to establish a distant education system, it is first required to create a virtual learning system environment. A detailed literature search has revealed the existence of some "Open-Source" systems such as "Claroline, Moodle etc." Each system has been investigated in detail and it was found that "Moodle" is…

  2. Ecological theories of systems and contextual change in medical education.

    Science.gov (United States)

    Ellaway, Rachel H; Bates, Joanna; Teunissen, Pim W

    2017-12-01

    Contemporary medical practice is subject to many kinds of change, to which both individuals and systems have to respond and adapt. Many medical education programmes have their learners rotating through different training contexts, which means that they too must learn to adapt to contextual change. Contextual change presents many challenges to medical education scholars and practitioners, not least because of a somewhat fractured and contested theoretical basis for responding to these challenges. There is a need for robust concepts to articulate and connect the various debates on contextual change in medical education. Ecological theories of systems encompass a range of concepts of how and why systems change and how and why they respond to change. The use of these concepts has the potential to help medical education scholars explore the nature of change and understand the role it plays in affording as well as limiting teaching and learning. This paper, aimed at health professional education scholars and policy makers, explores a number of key concepts from ecological theories of systems to present a comprehensive model of contextual change in medical education to inform theory and practice in all areas of medical education. The paper considers a range of concepts drawn from ecological theories of systems, including biotic and abiotic factors, panarchy, attractors and repellers, basins of attraction, homeostasis, resilience, adaptability, transformability and hysteresis. Each concept is grounded in practical examples from medical education. Ecological theories of systems consider change and response in terms of adaptive cycles functioning at different scales and speeds. This can afford opportunities for systematic consideration of responses to contextual change in medical education, which in turn can inform the design of education programmes, activities, evaluations, assessments and research that accommodates the dynamics and consequences of contextual change.

  3. Quantum correlations in a system of nuclear s = 1/2 spins in a strong magnetic field

    International Nuclear Information System (INIS)

    Fel’dman, E B; Kuznetsova, E I; Yurishchev, M A

    2012-01-01

    Entanglement and quantum discord for a pair of nuclear spins s = 1/2 in a nanopore filled with a gas of spin-carrying molecules (atoms) are studied. The correlation functions describing dynamics of dipolar-coupled spins in a nanopore are found. The dependence of spin-pair entanglement on the temperature and the number of spins is obtained from the reduced density matrix, which is centrosymmetric (CS). An analytic expression for the concurrence is obtained for an arbitrary CS density matrix. It is shown that the quantum discord as a measure of quantum correlations attains a significant value at low temperatures. It is also shown that the discord in the considered model has ‘flickering’ character and disappears periodically in the course of time evolution of the system. The geometric discord is studied for arbitrary 4 × 4 CS density matrices. (paper)

  4. 78 FR 63170 - Integrated Postsecondary Education Data System (IPEDS) 2013-2016; Extension of Public Comment...

    Science.gov (United States)

    2013-10-23

    ... DEPARTMENT OF EDUCATION Integrated Postsecondary Education Data System (IPEDS) 2013-2016; Extension of Public Comment Period; Correction AGENCY: Department of Education. ACTION: Correction notice... entitled, ``Integrated Postsecondary Education Data System (IPEDS) 2013-2016''. The comment period for this...

  5. THE THREE-DIMENSIONAL STRUCTURE OF THE M31 SATELLITE SYSTEM; STRONG EVIDENCE FOR AN INHOMOGENEOUS DISTRIBUTION OF SATELLITES

    International Nuclear Information System (INIS)

    Conn, A. R.; Parker, Q. A.; Zucker, D. B.; Lewis, G. F.; Ibata, R. A.; Martin, N. F.; McConnachie, A. W.; Valls-Gabaud, D.; Tanvir, N.; Irwin, M. J.; Ferguson, A. M. N.; Chapman, S. C.

    2013-01-01

    We undertake an investigation into the spatial structure of the M31 satellite system utilizing the distance distributions presented in a previous publication. These distances make use of the unique combination of depth and spatial coverage of the Pan-Andromeda Archaeological Survey to provide a large, homogeneous sample consisting of 27 of M31's satellites, as well as M31 itself. We find that the satellite distribution, when viewed as a whole, is no more planar than one would expect from a random distribution of equal size. A disk consisting of 15 of the satellites is however found to be highly significant, and strikingly thin, with an rms thickness of just 12.34 +0.75 -0.43 kpc. This disk is oriented approximately edge-on with respect to the Milky Way and almost perpendicular to the Milky Way disk. It is also roughly orthogonal to the disk-like structure regularly reported for the Milky Way satellite system and in close alignment with M31's Giant Stellar Stream. A similar analysis of the asymmetry of the M31 satellite distribution finds that it is also significantly larger than one would expect from a random distribution. In particular, it is remarkable that 20 of the 27 satellites most likely lie on the Milky Way side of the galaxy, with the asymmetry being most pronounced within the satellite subset forming the aforementioned disk. This lopsidedness is all the more intriguing in light of the apparent orthogonality observed between the satellite disk structures of the Milky Way and M31.

  6. RELIGIOUS AND MULTICULTURAL EDUCATION: INTRODUCING INTERFAITH DIALOGUE IN THE INDONESIAN EDUCATIONAL SYSTEM

    Directory of Open Access Journals (Sweden)

    Nina Mariani Noor

    2015-11-01

    Full Text Available Religious education which is taught in schools has a significant role in forming religious exclusivism and inclusivism, especially in Indonesia. It influences student’s views on others. It also depends on the way those religion educations taught. There is also a need to have more efforts to bring the idea of interfaith dialogue into educational system including in higher educational level. There are some educational institutions which already involved in inter-faith dialogue in their curriculum such as the CRCS (Center for Religious and Cross Cultural Studies and the ICRS (Indonesian Consortium for Religious Studies at Gadjah Mada University. However, the number of primary educational institutions which involves interfaith dialogue is still limited. This work suggests that, for today’s situation in Indonesian multicultural society, a need for reforming religion education curriculum in primary education is emerging. To make interfaith dialogue real in schools, the Ministry of Education in collaboration with Ministry of Religious Affairs is in a front line to arrange a new curriculum on religious education to be more pluralistic and affirm religious diversity in Indonesia including multi-religious education or inter religious education. Key words: religious, multicultural, education, interfaith.

  7. Chemical Engineering Education in a Bologna Three Cycle Degree System

    DEFF Research Database (Denmark)

    Gani, Rafiqul

    For the purpose of harmonization of European higher education, Europe’s education system has been going through major changes under what is commonly known as the ”Bologna Process”. The Bologna declaration in 1999 was the start of the introduction of a three cycle degree system in higher education...... such as applied chemistry and process engineering throughout Europe. The result has been a set of recommendations for the first (BS), second (MS) and third (PhD) cycle chemical engineering education aligned to the Bologna Process. They recommend that students studying towards bachelor and masters qualifications...... in Europe. To date, many European universities have adopted this degree structure. The Working Party on Education (WPE) of the European Federation of Chemical Engineering (EFCE) carried out research to determine the contents of higher education in chemical engineering (ChE) and related disciplines...

  8. Conquering systematics in the timing of the pulsar triple system J0337+1715: Towards a unique and robust test of the strong equivalence principle

    Science.gov (United States)

    Gusinskaia, N. V.; Archibald, A. M.; Hessels, J. W. T.; Lorimer, D. R.; Ransom, S. M.; Stairs, I. H.; Lynch, R. S.

    2017-12-01

    PSR J0337+1715 is a millisecond radio pulsar in a hierarchical stellar triple system containing two white dwarfs. The pulsar orbits the inner white dwarf every 1.6 days. In turn, this inner binary system orbits the outer white dwarf every 327 days. The gravitational influence of the outer white dwarf strongly accelerates the inner binary, making this system an excellent laboratory in which to test the strong equivalence principle (SEP) of general relativity – especially because the neutron star has significant gravitational self-binding energy. This system has been intensively monitored using three radio telescopes: Arecibo, Green Bank and Westerbork. Using the more than 25000 pulse times of arrival (TOAs) collected to date, we have modeled the system using direct 3-body numerical integration. Here we present our efforts to quantify the effects of systematics in the TOAs and timing residuals, which can limit the precision to which we can test the SEP in this system. In this work we describe Fourier-based techniques that we apply to the residuals in order to isolate the effects of systematics that could masquerade as an SEP violation. We also demonstrate that tidal effects are insignificant in the modeling.

  9. Effect of delayed link failure on probability of loss of assured safety in temperature-dependent systems with multiple weak and strong links.

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, J. D. (ProStat, Mesa, AZ); Oberkampf, William Louis; Helton, Jon Craig (Arizona State University, Tempe, AZ)

    2007-05-01

    Weak link (WL)/strong link (SL) systems constitute important parts of the overall operational design of high consequence systems, with the SL system designed to permit operation of the system only under intended conditions and the WL system designed to prevent the unintended operation of the system under accident conditions. Degradation of the system under accident conditions into a state in which the WLs have not deactivated the system and the SLs have failed in the sense that they are in a configuration that could permit operation of the system is referred to as loss of assured safety. The probability of such degradation conditional on a specific set of accident conditions is referred to as probability of loss of assured safety (PLOAS). Previous work has developed computational procedures for the calculation of PLOAS under fire conditions for a system involving multiple WLs and SLs and with the assumption that a link fails instantly when it reaches its failure temperature. Extensions of these procedures are obtained for systems in which there is a temperature-dependent delay between the time at which a link reaches its failure temperature and the time at which that link actually fails.

  10. SCIENTIFIC EDUCATIONAL ELECTRONIC LIBRARIES IN EDUCATING INFORMATIONAL SYSTEMS AND TECHNOLOGIES OF FUTURE MANAGERS

    Directory of Open Access Journals (Sweden)

    Nataliia S. Prilutska

    2013-09-01

    Full Text Available The article deals with the main principles of electronic libraries. It analyzes primary types of digital scientific and educational resources, presented in electronic libraries and defines the techniques of effective structuring of the learning content by means of informational technologies in the conditions of the informational processes intensification. The scientific fundamentals of choice of educational material are determined and the structure of the educational subject ''Informational Systems and Technologies'' under the credit and module system are designated. The declared structure of educational subject is taught for the students of the social-pedagogical department, referral courses ''Management''.

  11. e-Learning system ERM for medical radiation physics education.

    Science.gov (United States)

    Stoeva, Magdalena; Cvetkov, Asen

    2005-09-01

    The objective of this paper is to present the Education for Radiation in Medicine (ERM) e-Learning System. The system was developed, tested and piloted in the Inter-University Medical Physics Centre, Plovdiv, Bulgaria. It was based on the results of EU Project TEMPUS S-JEP 09826. The ERM e-Learning System is an integrated on-line system for remote education covering aspects of Medical Radiation Physics education (M.Sc. level). It provides user-friendly interface and optimised functionality with three different access levels: trainee, professor and administrator. The minimum server requirements and the standard client side working environment turn the system into a good, cost effective and easy to support solution for remote education.

  12. PISA RESULTS OR X-RAY FILMS OF EDUCATION SYSTEMS?

    Directory of Open Access Journals (Sweden)

    Feyzi Osman Pekel

    2016-12-01

    Full Text Available To be able to develop well-equipped students in accordance with the expectations of the society is one of the objectives of every education system in every country. In this sense, monitoring student performance comparatively at international level, assessing students and schools characteristics is crucially important in order to structuring individuals’ future lives. Determining student performances in different subject areas is a way for the countries examining the performance of their education systems (Anagün, 2011. Results of these assessments and evaluations enable steering the educational policy by diagnosing/revising the failures of the system.

  13. Transformation of the Adult Education System in Slovakia

    Science.gov (United States)

    Švec, Štefan

    1998-07-01

    This article examines trends in adult education in Slovakia since it became a separate republic in 1993. Economic and social transformations during this period have led to a re-thinking of the adult education system. The author describes four basic modalities for providing adult education in Slovakia: (1) schools and colleges; (2) cultural centres and similar institutions; (3) institutions for vocational training; (4) voluntary organizations such as trade unions, political parties and ethnic minority groups.

  14. Educational technologies in the system of managerial staff mentoring

    Directory of Open Access Journals (Sweden)

    L. P. Gancharik

    2016-01-01

    Full Text Available Investigations related to educational technologies, ensuring the Investigations are related to the educational technologies, ensuring the formation and support of a system of mentoring of managerial staff on the basis of the «cascade» technology training. A new form of cascade training – academic cascade training when the educational institutions create a large-scale information and educational environment on the basis of telecommunication technologies to provide the institute mentoring support in the state bodies and organizations.In comparison with the traditional mentoring (personal experience, students and graduates of the retraining system of educational institutions can transmit the knowledge and skills, acquired by them in the course of training, to the young managers and specialists of their organizations, thereby promoting further innovative educational potential of educational institutions through a system of cascading mentoring. For this purpose, in educational institutions an interactive educational environment is created based on telecommunication technologies, which allows you to create and develop a common information space, to simplify the procedure for communicating the mentors and trainees, to provide a wide access to the content. Telecommunication information technologies are not only a powerful tool, intelligent instrument and means of creating a cascade learning environment, but also an important factor in improving the entire methodical system of mentoring.It is proposed the creation of a large-scale information and educational environment on the basis of telecommunication technologies for cascade training when the educational institutions may become a part of the mentoring institution. On the one hand, they prepare students, including both potential mentors, and on the other hand, using modern telecommunication educational technologies, they participate together with the students-mentors in mentoring activity in

  15. Resurgence and the Nekrasov-Shatashvili limit: connecting weak and strong coupling in the Mathieu and Lamé systems

    Science.gov (United States)

    Basar, Gökçe; Dunne, Gerald V.

    2015-02-01

    The Nekrasov-Shatashvili limit for the low-energy behavior of and supersymmetric SU(2) gauge theories is encoded in the spectrum of the Mathieu and Lamé equations, respectively. This correspondence is usually expressed via an all-orders Bohr-Sommerfeld relation, but this neglects non-perturbative effects, the nature of which is very different in the electric, magnetic and dyonic regions. In the gauge theory dyonic region the spectral expansions are divergent, and indeed are not Borel-summable, so they are more properly described by resurgent trans-series in which perturbative and non-perturbative effects are deeply entwined. In the gauge theory electric region the spectral expansions are convergent, but nevertheless there are non-perturbative effects due to poles in the expansion coefficients, and which we associate with worldline instantons. This provides a concrete analog of a phenomenon found recently by Drukker, Mariño and Putrov in the large N expansion of the ABJM matrix model, in which non-perturbative effects are related to complex space-time instantons. In this paper we study how these very different regimes arise from an exact WKB analysis, and join smoothly through the magnetic region. This approach also leads to a simple proof of a resurgence relation found recently by Dunne and Ünsal, showing that for these spectral systems all non-perturbative effects are subtly encoded in perturbation theory, and identifies this with the Picard-Fuchs equation for the quantized elliptic curve.

  16. Elevated partial antiphospholipid score is a strong risk factor for thrombosis in patients with systemic lupus erythematosus: a validation study.

    Science.gov (United States)

    Chen, Jie; Sun, Shuhui; Yan, Qingran; Bao, Chunde; Fu, Qiong

    2016-02-01

    This study aims to identify risk factors for thrombosis in patients with systemic lupus erythematosus (SLE) and to validate the efficacy of the partial antiphospholipid (aPL) score for thrombosis prediction and diagnosis of antiphospholipid syndrome (APS). This study included 325 SLE patients, 188 of whom completed a follow-up of 31.01 months (range 23-48 months). Partial aPL score was calculated by adding up the individual scores for activated partial thromboplastin time (APTT), lupus anticoagulant, IgG/IgM anticardiolipin antibodies (aCL), and IgG/IgM anti-β2-glycoprotein I (anti-β2GPI). A simplified aPL score was developed using only APTT, IgG/IgM aCL, and IgG/IgM anti-β2GPI. Partial aPL scores were significantly higher in SLE patients with thrombosis (p thrombosis (p 10 (p thrombosis. For patients with a history of thrombosis, partial aPL score was the strongest risk factor for recurrent thrombosis (p thrombosis (p thrombosis in SLE patients and is a useful tool to predict recurrent thrombosis. Partial aPL score and simplified aPL score, although comprising fewer items than the original aPL score, also represent valuable quantitative indices for APS diagnosis.

  17. Metformin, besides exhibiting strong in vivo anti-inflammatory properties, increases mptp-induced damage to the nigrostriatal dopaminergic system

    International Nuclear Information System (INIS)

    Ismaiel, Afrah A.K.; Espinosa-Oliva, Ana M.; Santiago, Martiniano; García-Quintanilla, Albert; Oliva-Martín, María J.; Herrera, Antonio J.; Venero, José L.; Pablos, Rocío M. de

    2016-01-01

    Metformin is a widely used oral antidiabetic drug with known anti-inflammatory properties due to its action on AMPK protein. This drug has shown a protective effect on various tissues, including cortical neurons. The aim of this study was to determine the effect of metformin on the dopaminergic neurons of the substantia nigra of mice using the animal model of Parkinson's disease based on the injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, an inhibitor of the mitochondrial complex I. In vivo and in vitro experiments were used to study the activation of microglia and the damage of the dopaminergic neurons. Our results show that metformin reduced microglial activation measured both at cellular and molecular levels. Rather than protecting, metformin exacerbated dopaminergic damage in response to MPTP. Our data suggest that, contrary to other brain structures, metformin treatment could be deleterious for the dopaminergic system. Hence, metformin treatment may be considered as a risk factor for the development of Parkinson's disease. - Highlights: • Metformin treatment decreases microglial activation in the MPTP model of Parkinson's disease. • Metformin treatment increases the neurodegeneration in the MPTP model of Parkinson's disease, both in vivo and vitro. • Metformin treatment could be a risk factor for the development of Parkinson's disease.

  18. THEORETICAL BASES OF DIVERSIFICATION OF PENITENTIARY EDUCATIONAL SYSTEM

    Directory of Open Access Journals (Sweden)

    Нэилэ Каюмовна Щепкина

    2013-08-01

    Full Text Available The article deals with the main results of scientific research devoted to the question of theoretical bases of diversification of penitentiary educational system in institutions of confinement.The urgency of scientific research reveals through the social importance of convicts’ education.The article draws attention to the fact that the problem of diversification of penitentiary educational system hasn’t been considered in pedagogy yet.  It also identifies the main contradictions, tasks and methods of scientific research.Retrospective analysis of criminal system inRussiahelps to define the existing tendencies of convicts’ education, unsolved problems in this field of science and formulate perspective ideas to modernize the penitentiary educational system.The item tells about the main point of diversification of penitentiary educational system and presents it in a model. It gives detailed analysis of model’s components and depicts some practical ways of its embodiment in institutions of confinement. Moreover the article describes the determinants of diversification of penitentiary educational system which are seemed to be the factors and conditions of its effective development.DOI: http://dx.doi.org/10.12731/2218-7405-2013-6-20

  19. Medical education in cyberspace: critical considerations in the health system.

    Science.gov (United States)

    Yazdani, Shahram; Khoshgoftar, Zohreh; Ahmady, Soleiman; Rastegarpour, Hassan; Foroutan, Seyed Abbas

    2017-01-01

    Over the past few decades, two revolutionary approaches have emerged as a new form of medical education: Electronic Medical Education and Web-based Medical Education. A number of well-known medical institutions, such as Harvard and Johns Hopkins used a wide range of cyberspace capabilities to increase their competitiveness. Researchers have expressed that cyberspace will change health system's main objective of training physicians and medical education. We conducted this study to identify the health system critical considerations on core issues, involving the development of medical education on cyberspace. In order to conduct this study, we observed the steps of a critical literature review, combined with the 'Four-phase method' adopted by Carnwell and Daly. We focused on particular literature on health and cyber system functions; it was associated with systemic approach. We developed a six-level taxonomy, Cyber level, Governance level, Ministerial level, Organizational level, Program level and Performance level, as a key solution that can be applied for the success of medical education on cyberspace. The results were summarized and appraised in more details. Medical education on cyberspace is a complex interdisciplinary system. It is important that all aspects of the health systems be involved as integral to the development of cyber based medical education; without this convergence, we will be confused by the decisions made by others within the system. Health system should also communicate with those external sectors that are critical to achieving better learning on cyberspace. Integrated planning, governance and management of medical education in cyberspace are pivotal elements for the promotion.

  20. ENVIRONMENTAL PROTECTION AND EDUCATION SYSTEM IN POLAND

    Directory of Open Access Journals (Sweden)

    Małgorzata Falencka-Jabłońska

    2017-10-01

    Full Text Available Pro-environmental education and the effectiveness of its methods are a necessity, decisive for preserving natural resources for successive generations. Educating proper attitudes towards the surrounding nature must be based on sound knowledge gained, supported by observation, experience and experiment. Teaching conducted at all levels environmental science should be based not on boxed knowledge, but on causal thinking skills. Establishing hypotheses and their verification, as well as the variety of methods of understanding the laws of nature, will influence the effective prevention of environmental degradation in the 21st century.

  1. Development of a Diagnostic System for Information Ethics Education

    Science.gov (United States)

    Shiota, Shingo; Sakai, Kyohei; Kobayashi, Keita

    2016-01-01

    This paper presents a new diagnostic system for information ethics education. In order to educate children about information ethics, it is necessary to know the stage at which they currently are in terms of their knowledge of the same. Some actual condition surveys have been conducted by the Cabinet Office and the National Police Agency to gauge…

  2. A Comparative Review of Canadian Health Professional Education Accreditation Systems

    Science.gov (United States)

    Curran, Vernon R.; Fleet, Lisa; Deacon, Diana

    2006-01-01

    Canadian governments and various stakeholder groups are advocating greater interprofessional collaboration amongst health care providers as a fundamental strategy for enhancing coordination and quality of care in the health care system. Interprofessional education for collaborative patient-centred practice (IECPCP) is an educational process by…

  3. The System of Environmental Education in the USA

    Science.gov (United States)

    Fasolya, Oleg

    2016-01-01

    The article deals with studying the peculiarities of environmental education system in the USA. It has been defined that US environmental policy includes governmental actions at the federal, state and local level. It has been identified that US environmental education is characterized by an extraordinary variety of forms, directions and…

  4. Study on Enterprise Education System for Undergraduates in Universities

    Science.gov (United States)

    Zhang, Min

    2014-01-01

    This paper studies the higher school undergraduate entrepreneurship education system. Its architecture mainly includes five aspects of content: improve the students' entrepreneurial cognitive ability, adjust the teacher's education idea, carry out various kinds of entrepreneurship and entrepreneurial training, carry out flexible forms of team…

  5. Opportunities to Align California's PreK-3 Education System

    Science.gov (United States)

    Policy Analysis for California Education, PACE, 2016

    2016-01-01

    "PreK-3 Alignment in California's Education System: Obstacles and Opportunities" by Rachel Valentino and Deborah J. Stipek reviews the opportunities and challenges that must be addressed to better align PreK-3 education in California. The report describes policies and practices that districts have implemented to strengthen alignment, and…

  6. Computerized System Administration Education in Indonesia Management Development Institute

    OpenAIRE

    Siti Wardah; Aqwam Rosadi Kardian, SKom, MM

    1996-01-01

    Computerization as an alternative to meet the smoothness and timeliness in confectionery a system of educational administration Indonesian Institute for Management Development. Use of existing computers as data processing devices, the improvement of educational administrative services IPMI capabilities can be realized.

  7. Overcoming the Limitations of the Factory System of Education

    Science.gov (United States)

    Van Duzer, Eric

    2006-01-01

    For the past twenty years policy initiatives at the state and federal levels have reflected the call for significant improvement in educational outcomes to support the human capital needs of the 21st century. An argument is presented on the basis of longitudinal data that the basic structure of the current system of education undermines national…

  8. Prospectus for a Cooperative Extension System in Education.

    Science.gov (United States)

    Rogers, Everett M.

    1992-01-01

    This article reviews lessons learned from the agricultural extension model that may apply to the proposed cooperative extension service in education. The agricultural extension model is a user-oriented system linking knowledge producers with other knowledge users. In education, the adopters of innovations may be organizations as well as…

  9. The Environment of Crises in the Nigerian Education System.

    Science.gov (United States)

    Nwagwu, Cordelia C.

    1997-01-01

    During 1960-95, unplanned and uncontrolled educational expansion in Nigeria, coupled with a population explosion, military coups, and a depressed economy, created an environment of crisis in the educational system. Problems included poor funding; inadequate facilities; corruption in admissions, certification, and examination practices; emergence…

  10. Connecticut Public Higher Education: 2011 System Trends. Report

    Science.gov (United States)

    Connecticut Department of Higher Education (NJ1), 2011

    2011-01-01

    This paper presents the public higher education system trends in Connecticut for 2011. This report contains the following sections: (1) Higher Education in a Statewide Context; (2) Expenditure Trends; (3) Comparative Funding Indicators; (4) Enrollment Trends; (5) Position Trends; (6) Tuition and Fees; (7) Student and State Share of Costs; and (8)…

  11. Connecticut Public Higher Education: 2009 System Trends. Report

    Science.gov (United States)

    Connecticut Department of Higher Education (NJ1), 2009

    2009-01-01

    This paper presents the public higher education system trends in Connecticut for 2009. This report contains the following sections: (1) Higher Education in a Statewide Context; (2) Expenditure Trends; (3) Comparative Funding Indicators; (4) Enrollment Trends; (5) Degrees Conferred; (6) Position Trends; (7) Tuition and Fees; (8) Student and State…

  12. Utah System of Higher Education 2015-16 Annual Report

    Science.gov (United States)

    Utah System of Higher Education, 2016

    2016-01-01

    This annual report describes Utah System of Higher Education's progress in the 2015-2016 academic year in the following areas: (1) Strategic plan; (2) Enrollment and completion; (3) Paying for college; (4) Funding higher education; (5) College preparation; (6) Concurrent enrollment and math; (7) Outreach and access; and (8) Industry and the…

  13. Evolution of Turkish Higher Education System in the Last Decade

    Directory of Open Access Journals (Sweden)

    Pelin Deniz TEKNECİ

    2016-12-01

    Full Text Available Turkey has witnessed a rapid massification in its higher education sector. The rate of total gross enrollment in Turkish higher education reached 79 percent in 2014 while it was 31 percent in 2004 and surpassed OECD averages. This study aims to depict the trends observed in the Turkish higher education sector. In this context, changes observed in enrolment rates, faculty and student compositions, expenditures and publication outputs of Turkish higher education institutions during the last decade are discussed. In addition, comparison with OECD averages are provided to understand the relative position of Turkey compared to other countries. Analyses have shown that Turkish higher education system performs very well in terms of higher education enrollment rates, female students, and female faculty members. Meanwhile, this study has revealed that it needs to improve its performance in terms of quantity of faculty members, doctorate students, and international students, funds received from abroad, participation of private sector, and quantity and quality of scientific publications. It is considered that issues which are exacerbated with the rapid expansion of Turkish higher education system can be handled effectively via deploying a comprehensive database regarding Turkish higher education system, promoting data based policy making, determining clear and measurable targets with associated costs in the national policy documents, and establishing a performance evaluation system for universities.

  14. Teacher Disempowerment in the Education System of Ecuador

    Science.gov (United States)

    Fajardo-Dack, Tammy M.

    2016-01-01

    A profound and systemic education change requires taking into consideration the several factors that intervene, particularly, and most importantly, the role of the teacher. Ecuador, since 2009 has been immersed in constant changes to achieve an educational transformation; however, nothing has been invested in the professional development of…

  15. Ecuador's Higher Education System in Times of Change

    Science.gov (United States)

    Van Hoof, Hubert B.; Estrella, Mateo; Eljuri, Marie-Isabel; León, Leonardo Torres

    2013-01-01

    Ecuador's higher education system is undergoing dramatic changes. The National Constitution of 2008 and the Higher Education Law of 2010 have changed the way Ecuador's universities are funded, administered, and accredited. The importance of research was elevated and drastic changes were made to the academic qualifications and employment conditions…

  16. Critical Appraisal of the System of Education and Prospects of ...

    African Journals Online (AJOL)

    The main purpose of this article is to review the South African system of education and assess the country's prospects of meeting current and future manpower and developmental needs. This inquiry is based primarily on an assessment of the current status quo in education in South Africa in order to gain a better ...

  17. Quota System And Educational Reforms In Nigeria | Obielumani ...

    African Journals Online (AJOL)

    As a result of the multi-ethnic nature of Nigeria and the desire of all to have quality education as a way of breaking the barriers of poverty, disease and ignorance, the struggle to have access to education has become more aggressive hence the introduction of quota system policy by the Federal Government as an instrument ...

  18. GENDER DEFINITION OF MUSICAL ART IN THE EDUCATIONAL SYSTEM

    Directory of Open Access Journals (Sweden)

    V. V. Poliuha

    2017-06-01

    Full Text Available The article interprets the gender issues and their interconnection of musical art that leads to analyzis of music pedagogy and educational system in general. The purpose of the study is the selection and analysis of such gender definitions of music as ender dimension, gender roles, gender approach, the gender component in the system of music education. Methodology of the study is based on the interdisciplinary approach that involves the use of scientific methods of analysis, synthesis and synthesis. Also, there is the method of comparative analysis and analogy applied in understanding the problems related to the study of gender influence in art and education. Originality is reflected in modern educational concept that appeals to the understanding of gender issues as a way of more thorough understanding of individuals, their role status of the individual, which in turn defines social opportunities in educational activities. Accordingly, the modern science can not remain uninvolved into the problems of modern times. Conclusions. Studies of gender in musical art education leads to selection, analyzis and understanding of such definitions as: gender dimension, which is focused on the understanding of the principle of obtaining polysynthetic, gender sensation from a musical work; gender roles, which distinguish representation of women in different kinds of music; gender approach, which establishes the availability of gender imbalance in the system of music education; gender component, which distinguishes the importance of understanding and practical implementation of gender equality in the system of music education.

  19. Learning from south-south comparison: the education systems of ...

    African Journals Online (AJOL)

    The purpose of this investigation was to compare two education systems in the southern hemisphere and particularly from the SADEC countries, namely, Madagascar and South Africa. Research was done by means of field observation as well as through discussions and interviews with role players at regional education ...

  20. Embedding Ethics in System Administration Education

    NARCIS (Netherlands)

    van der Ham, J.

    2015-01-01

    Computer and network security cases continue to rise each year, playing an important role within our society. With a growing job market in this field, there remains little formal education at the high school level to become familiar with this profession. We proposed to develop an interactive