WorldWideScience

Sample records for kantowski-sachs type universe

  1. The choice of time in quantum cosmology: two different approaches to Kantowski-Sachs quantum universe

    CERN Document Server

    Alvarenga, F G; Freitas, R C; Gonçalves, S V B

    2015-01-01

    In this paper we study the quantum Kantowski-Sachs model and we solve the Wheeler-DeWitt equation in minisuperspace to obtain the wave function of the corresponding universe. The perfect fluid is described by the Schutz's canonical formalism, which allows to attribute dynamical degrees of freedom to matter. The time is introduced phenomenologically using the fluid's degrees of freedom. In particular, we adopt a stiff matter fluid. The Kantowski-Sachs model is also presented with the introduction of so-called geometric time. Finally, the agreement between the results is analyzed and the possibility of equivalence between the two approaches is discussed.

  2. Kantowski-Sachs Universes sourced by a Skyrme fluid

    CERN Document Server

    Parisi, Luca; Vilasi, Gaetano

    2014-01-01

    The Kantowski-Sachs cosmological model sourced by a Skyrme field and a cosmological constant is considered in the framework of General Relativity. Assuming a constant radial profile function for the hedgehog ansatz, the Skyrme contribution to Einstein equations is shown to be equivalent to an anisotropic fluid. Using dynamical system techniques, a qualitative analysis of the cosmological equations is presented. Physically interesting features of the model such as isotropization, bounce and recollapse are discussed.

  3. Bianchi type-I, type-III and Kantowski-Sachs solutions in f( T) gravity

    Science.gov (United States)

    Rodrigues, M. E.; Kpadonou, A. V.; Rahaman, F.; Oliveira, P. J.; Houndjo, M. J. S.

    2015-06-01

    In the context of modified tele-parallel theory of gravity, we undertake cosmological anisotropic models and search for their solutions. Within a suitable choice of non-diagonal tetrads, the decoupled equations of motion are obtained for Bianchi-I, Bianchi-III and Kantowski-Sachs models, from which we obtain the correspondent solutions. By the way, energy density and pressures are also obtained, showing, as an important result, that our universe may live a quintessence like universe even while anisotropic models are considered.

  4. A note on proper affine symmetry in Kantowski-Sachs and Bianchi type III space-times

    CERN Document Server

    Shabbir, Ghulam

    2016-01-01

    We investigate proper affine symmetry for the Kantowski-Sachs and Bianchi type III space-times by using holonomy and decomposability, the rank of the 6X6 Riemann matrix and direct integration techniques. It is shown that the very special classes of the above space-times admit proper affine vector fields.

  5. A note on classification of proper homothetic vector fields in Kantowski-Sachs and Bianchi type III Lorentzian manifolds

    CERN Document Server

    Shabbir, Ghulam

    2011-01-01

    A complete study of Kantowski-Sachs and Bianchi type III space-times according to their proper homothetic vector fields is given by using direct integration technique. Using the above mentioned technique we have shown that very special classes of the above space-times admit proper homothetic vector fields. The dimension of homothetic vector fields is five.

  6. Kantowski-Sachs Universe Models in $f(T)$ Theory of Gravity

    CERN Document Server

    Amir, M Jamil

    2015-01-01

    The $f(T)$ theory is recently proposed to explain the present cosmic accelerating expansion of the universe. $f(T)$ theory is an extension of Teleparallel theory of gravity, where $T$ is the torsion scalar. This paper contains the construction of $f(T)$ models within the Kantowski-Sachs universe. For this purpose, we use conservation equation and equation of state parameter, which represents the different phases of the universe. We discuss possible cases for the matter dominated era, radiation dominated era, present dark energy phase and their combinations. Particularly, a constant solution has been obtained which may correspond to the cosmological constant. Further, we consider two well known $f(T)$ models and derive the equation of state parameter and discuss the cosmic acceleration. Also, the Hubble parameter and average scale factor have been evaluated.

  7. Kantowski-Sachs Universe in the Varying Speed of Light Theory

    CERN Document Server

    Khadekar, G S; Ray, Saibal

    2016-01-01

    In this work we consider the Kantowski-Sachs (KS) universe in the framework of varying speed of light theory. We present the general solutions of the gravitational field equations with variable speed of light $c(t)$, gravitational coupling parameter $G(t)$ and the decaying vacuum energy $\\Lambda(t)$ for the KS model. In the limiting case for the equation of state (EOS) parameter $\\gamma=2$ (stiff fluid with $p=\\rho c^2$) and $\\gamma =1$ (dust with $p=0$), exact solutions of the field equations are obtained. The numerical solutions are also presented for both the cases. Moreover, it is shown that in the limiting case of large time, the mean anisotropy parameter tends to zero for $\\gamma=2$ and $\\gamma=1$. Thus the time variation of the fundamental constants provides an effective mechanism for the isotropization of the KS universe.

  8. (Non) singular Kantowski-Sachs Universe from quantum spherically reduced matter

    CERN Document Server

    Nojiri, S; Odintsov, S D; Osetrin, K E

    1999-01-01

    Using s-wave and large $N$ approximation the one-loop effective action for 2d dilaton coupled scalars and spinors which are obtained by spherical reduction of 4d minimal matter is found. Quantum effective equations for reduced Einstein gravity are written. Their analytical solutions corresponding to 4d Kantowski-Sachs (KS) Universe are presented. For quantum-corrected Einstein gravity we get non-singular KS cosmology which represents 1) quantum-corrected KS cosmology which existed on classical level or 2)purely quantum solution which had no classical limit. The analogy with Nariai BH is briefly mentioned. For purely induced gravity (no Einstein term) we found general analytical solution but all KS cosmologies under discussion are singular. The corresponding equations of motion are reformulated as classical mechanics problem of motion of unit mass particle in some potential $V$.

  9. Perturbations of Kantowski-Sachs models

    CERN Document Server

    Bradley, Michael; Keresztes, Zoltán; Gergely, László Á; Dunsby, Peter K S

    2013-01-01

    Perturbations of Kantowski-Sachs models with a positive cosmological constant are considered in a harmonic decomposition, in the framework of gauge invariant 1+3 and 1+1+2 covariant splits of spacetime. Scalar, vector and tensor modes are allowed, however they remain vorticity-free and of perfect fluid type. The dynamics is encompassed in six evolution equations for six harmonic coefficients.

  10. Geometric properties of the Kantowski-Sachs and Bianchi-type Killing algebra in relation to a Klein-Gordon equation

    Science.gov (United States)

    Jamal, Sameerah; Shabbir, Ghulam

    2017-02-01

    We study the geometric properties of generators for the Klein-Gordon equation in Kantowski-Sachs and certain Bianchi-type spaces. Several versions of the Klein-Gordon equation are derived from its dependence on a potential function. The criteria for different versions of the (1+3) Klein-Gordon equation originates from analyzing three sources, viz. through generators that are identically the Killing algebra, or with the Killing vector fields that are recast into linear combinations and thirdly, real sub-algebras within the conformal algebra. In turn, these equations admit a catalogue of infinitesimal symmetries that are equivalent to the corresponding Killing vector fields in Kantowski-Sachs, Bianchi type III, IX, VIII, VI0 and VII0 space-times, with the exception of a linear vector W=upartialu in every case. The sheer number of results are displayed in appropriate tables. Subsequently, in application, we derive some Noetherian conservation laws and identify some exact solutions by quadratures.

  11. Bounce behaviour in Kantowski-Sachs and Bianchi cosmologies

    Energy Technology Data Exchange (ETDEWEB)

    Solomons, Deon [Cape Peninsula University of Technology, Cape Town (South Africa); Dunsby, Peter K S [Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town (South Africa); Ellis, George F R [Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town (South Africa)

    2006-12-07

    Many cosmological scenarios envisage either a bounce of the universe at early times, or collapse of matter locally to form a black hole which re-expands into a new expanding universe region. Energy conditions preclude this happening for ordinary matter in general relativistic universes, but scalar or dilatonic fields can violate some of these conditions, and so could possibly provide bounce behaviour. In this paper we show that such bounces cannot occur in Kantowski-Sachs models without violating the reality condition {phi}-dot{sup 2} {>=}0. This also holds true for other isotropic spatially homogeneous Bianchi models, with the exception of closed Friedmann-Robertson-Walker and Bianchi IX models; bounce behaviour violates the weak energy condition {rho} {>=} 0 and {rho} + p {>=} 0. We turn to the Randall-Sundrum type braneworld scenario for a possible resolution of this problem.

  12. Perturbations of Kantowski-Sachs models with a cosmological constant

    CERN Document Server

    Keresztes, Zoltán; Bradley, Michael; Dunsby, Peter K S; Gergely, László Á

    2013-01-01

    We investigate perturbations of Kantowski-Sachs models with a positive cosmological constant, using the gauge invariant 1+3 and 1+1+2 covariant splits of spacetime together with a harmonic decomposition. The perturbations are assumed to be vorticity-free and of perfect fluid type, but otherwise include general scalar, vector and tensor modes. In this case the set of equations can be reduced to six evolution equations for six harmonic coefficients.

  13. No bounce behaviour in Kantowski-Sachs Cosmologies

    CERN Document Server

    Solomons, D M; Ellis, G; Solomons, Deon; Dunsby, Peter; Ellis, George

    2001-01-01

    Many cosmological scenarios envisage either a bounce of the universe at early times, or collapse of matter locally to form a black hole which re-expands into a new expanding universe region. Energy conditions preclude this happening for ordinary matter in general relativistic universes, but scalar or dilatonic fields can violate some of these conditions, and so could possibly provide bounce behaviour. In this paper we show that such bounces cannot occur in Kantowski-Sachs models without violating the {\\it reality condition} $\\dot{\\phi}^2\\geq 0$.

  14. Exact solution of the Einstein-Skyrme model in a Kantowski-Sachs spacetime

    Science.gov (United States)

    Paliathanasis, Andronikos; Tsamparlis, Michael

    2017-04-01

    We consider a Skyrme fluid with a constant radial profile in locally rotational Kantowski-Sachs spacetime. The Skyrme fluid is an anisotropic fluid with zero heat flux and with an equation of state parameter wS that |ws | ≤ 1/3. From the Einstein field equations we define the Wheeler-DeWitt equation. For the last equation we perform a Lie symmetry classification and we determine the invariant solutions for the wavefunction of the model. Moreover from the Lie symmetries of the Wheeler-DeWitt equation we construct Noetherian conservation laws for the field equations which we use in order to write the solution in closed form. We show that all of the cosmological parameters are expressed in terms of the scale factor of the two dimensional sphere of the Kantowski-Sachs spacetime. Finally from the application of Noether's theorem for the Wheeler-DeWitt equation we derive conservation laws for the wavefunction of the universe.

  15. Geodesic completeness and the lack of strong singularities in effective loop quantum Kantowski-Sachs spacetime

    Science.gov (United States)

    Saini, Sahil; Singh, Parampreet

    2016-12-01

    Resolution of singularities in the Kantowski-Sachs model due to non-perturbative quantum gravity effects is investigated. Using the effective spacetime description for the improved dynamics version of loop quantum Kantowski-Sachs spacetimes, we show that even though expansion and shear scalars are universally bounded, there can exist events where curvature invariants can diverge. However, such events can occur only for very exotic equations of state when pressure or derivatives of energy density with respect to triads become infinite at a finite energy density. In all other cases curvature invariants are proved to remain finite for any evolution in finite proper time. We find the novel result that all strong singularities are resolved for arbitrary matter. Weak singularities pertaining to above potential curvature divergence events can exist. The effective spacetime is found to be geodesically complete for particle and null geodesics in finite time evolution. Our results add to a growing evidence for generic resolution of strong singularities using effective dynamics in loop quantum cosmology by generalizing earlier results on isotropic and Bianchi-I spacetimes.

  16. Unitary evolution for a quantum Kantowski-Sachs cosmology

    CERN Document Server

    Pal, Sridip

    2015-01-01

    It is shown that like Bianchi I, V and IX models, a Kantowski-Sachs cosmological model also allows a unitary evolution on quantization. It has also been shown that this unitarity is not at the expense of the anisotropy. Non-unitarity, if there is any, cannot escape notice in this as the evolution is studied against a properly oriented time parameter fixed by the evolution of the fluid. Furthermore, we have constructed a wave-packet by superposing different energy eigenstates, thereby establishing unitarity in a non-trivial way, which is a stronger result than an energy eigenstate trivially giving time independent probability density. For $\\alpha\

  17. Kantowski-Sachs cosmological solutions in the generalized teleparallel gravity via Noether symmetry

    Science.gov (United States)

    Motavalli, H.; Akbarieh, A. Rezaei; Nasiry, M.

    2016-04-01

    We study the f(T) theory as an extension of teleparallel gravity and consider the Noether symmetry of Kantowski-Sachs (KS) anisotropic model for this theory. We specify the explicit teleparallel form of f(T) and find the corresponding exact cosmological solutions under the assumption that the Lagrangian admits the Noether symmetry. It is found that the universe experiences a power law expansion for the scale factors in the context of f(T) theory. By deriving equation of state (EOS) parameter, we show that the universe passes through the phantom and ΛCDM theoretical scenarios. In this way, we estimate a lower limit age for the universe in excellent agreement with the value reported from recent observations. When KS model reduces to the flat Friedmann-Robertson-Walker (FRW) metric, our results are properly transformed into the corresponding values.

  18. Non-Canonical Phase-Space Noncommutativity and the Kantowski-Sachs singularity for Black Holes

    CERN Document Server

    Bastos, Catarina; Dias, Nuno Costa; Prata, João Nuno

    2010-01-01

    We consider a cosmological model based upon a non-canonical noncommutative extension of the Heisenberg-Weyl algebra to address the thermodynamical stability and the singularity problem of both the Schwarzschild and the Kantowski-Sachs black holes. The interior of the black hole is modelled by a noncommutative extension of the Wheeler-DeWitt equation. We compute the temperature and entropy of a Kantowski-Sachs black hole and compare our results with the Hawking values. Again, the noncommutativity in the momenta sector allows us to have a minimum in the potential, which is relevant in order to apply the Feynman-Hibbs procedure. For Kantowski-Sachs black holes, the same model is shown to generate a non-unitary dynamics, predicting vanishing total probability in the neighborhood of the singularity. This result effectively regularizes the Kantowski-Sachs singularity and generalizes a similar result, previously obtained for the case of Schwarzschild black hole.

  19. Kantowski-Sachs Einstein-aether perfect fluid models

    CERN Document Server

    Latta, Joey

    2016-01-01

    We investigate Kantowski-Sachs models in Einstein-aether theory with a perfect fluid source using dynamical system tools. We find an inflationary source at early times, and an inflationary sink at late times, for a wide region in the parameter space. The results by A. A. Coley, G. Leon, P. Sandin and J. Latta, JCAP {\\bf 12}, 010 (2015) are then re-obtained as particular cases. Additionally, we select other values for non-GR parameters which are consistent with current constraints, getting a very rich phenomenology. Particularly, we find solutions with infinite shearing, zero curvature, and infinity matter energy density in comparison with the Hubble scalar. We also have stiff-like future attractors, anisotropic late-time attractors, or both, in some special cases. Such results are developed analytically, and then verified by numerics. From the cosmological point of view, the more interesting fixed points are those representing accelerated solutions. However, the accelerated solutions do not isotropize, and th...

  20. Kantowski-Sachs Einstein-æther perfect fluid models

    Science.gov (United States)

    Latta, Joey; Leon, Genly; Paliathanasis, Andronikos

    2016-11-01

    We investigate Kantowski-Sachs models in Einstein-æ ther theory with a perfect fluid source using the singularity analysis to prove the integrability of the field equations and dynamical system tools to study the evolution. We find an inflationary source at early times, and an inflationary sink at late times, for a wide region in the parameter space. The results by A.A. Coley, G. Leon, P. Sandin and J. Latta (JCAP 12 (2015) 010), are then re-obtained as particular cases. Additionally, we select other values for the non-GR parameters which are consistent with current constraints, getting a very rich phenomenology. In particular, we find solutions with infinite shear, zero curvature, and infinite matter energy density in comparison with the Hubble scalar. We also have stiff-like future attractors, anisotropic late-time attractors, or both, in some special cases. Such results are developed analytically, and then verified by numerics. Finally, the physical interpretation of the new critical points is discussed.

  1. Qualitative analysis of Kantowski-Sachs metric in a generic class of f(R) models

    Energy Technology Data Exchange (ETDEWEB)

    Leon, Genly [Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaíso (Chile); Roque, Armando A., E-mail: genly.leon@ucv.cl, E-mail: arestrada@ucf.edu.cu [Grupo de Estudios Avanzados, Universidad de Cienfuegos, Carretera a Rodas, Cuatro Caminos, s/n. Cienfuegos (Cuba)

    2014-05-01

    In this paper we investigate, from the dynamical systems perspective, the evolution of a Kantowski-Sachs metric in a generic class of f(R) models. We present conditions (i.e., differentiability conditions, existence of minima, monotony intervals, etc.) for a free input function related to the f(R), that guarantee the asymptotic stability of well-motivated physical solutions, specially, self-accelerated solutions, allowing to describe both inflationary- and late-time acceleration stages of the cosmic evolution. We discuss which f(R) theories allows for a cosmic evolution with an acceptable matter era, in correspondence to the modern cosmological paradigm. We find a very rich behavior, and amongst others the universe can result in isotropized solutions with observables in agreement with observations, such as de Sitter, quintessence-like, or phantom solutions. Additionally, we find that a cosmological bounce and turnaround are realized in a part of the parameter-space as a consequence of the metric choice.

  2. Qualitative analysis of Kantowski-Sachs metric in a generic class of $f(R)$ models

    CERN Document Server

    Leon, Genly

    2013-01-01

    In this paper we investigate, from the dynamical systems perspective, the evolution of a Kantowski-Sachs metric in a generic class of $f(R)$ models. We present conditions (i. e., differentiability conditions, existence of minima, monotony intervals, etc.) for a free input function related to the $f(R)$, that guarantee the asymptotic stability of well-motivated physical solutions, specially, self-accelerated solutions, allowing to describe both inflationary- and late-time acceleration stages of the cosmic evolution. We discuss which $f(R)$ theories allows for a cosmic evolution with an acceptable matter era, in correspondence to the modern cosmological paradigm. We find a very rich behavior, and amongst others the universe can result in isotropized solutions with observables in agreement with observations, such as de Sitter, quintessence-like, or phantom solutions. Additionally, we find that a cosmological bounce and turnaround are realized in a part of the parameter-space as a consequence of the metric choice...

  3. Noncanonical phase-space noncommutativity and the Kantowski-Sachs singularity for black holes

    Science.gov (United States)

    Bastos, Catarina; Bertolami, Orfeu; Dias, Nuno Costa; Prata, João Nuno

    2011-07-01

    We consider a cosmological model based upon a noncanonical noncommutative extension of the Heisenberg-Weyl algebra to address the thermodynamical stability and the singularity problem of black holes whose interior are described by the Kantowski-Sachs metric and modeled by a noncommutative extension of the Wheeler-DeWitt equation. We compute the temperature and entropy of these black holes and compare the results with the Hawking values. We observe that it is actually the noncommutativity in the momentum sector that allows for the existence of a minimum in the potential, which is the key to apply the Feynman-Hibbs procedure. It is shown that this noncommutative model generates a nonunitary dynamics that predicts a vanishing probability in the neighborhood of the singularity. This result effectively regularizes the Kantowski-Sachs singularity and generalizes a similar result, previously obtained for the case of Schwarzschild black holes.

  4. Two-oscillator Kantowski-Sachs model of the Schwarzschild black hole interior

    Science.gov (United States)

    Djordjevic, Goran S.; Nesic, Ljubisa; Radovancevic, Darko

    2016-08-01

    In this paper the interior of the Schwarzschild black hole, which is presented as a vacuum, homogeneous and anisotropic Kantowski-Sachs minisuperspace cosmological model, is considered. Lagrangian of the model is reduced by a suitable coordinate transformation to Lagrangian of two decoupled oscillators with the same frequencies and with zero energy in total (an oscillator-ghost-oscillator system). The model is presented in a classical, a p-adic and a noncommutative case. Then, within the standard quantum approach Wheeler-DeWitt equation and its general solutions, i.e. a wave function of the model is written, and then an adelic wave function is constructed. Finally, thermodynamics of the model is studied by using the Feynman-Hibbs procedure.

  5. Two-oscillator Kantowski-Sachs model of the Schwarzschild black hole interior

    CERN Document Server

    Djordjevic, Goran S; Radovancevic, Darko

    2015-01-01

    In this paper the interior of the Schwarzschild black hole, which is presented as a vacuum homogeneous and anisotropic Kantowski-Sachs minisuperspace cosmological model, is considered. Lagrangian of the model is reduced by a suitable coordinate transformation to Lagrangian of two decoupled oscillators with the same frequencies and with zero energy in total (an oscillator-ghost-oscillator system). The model will be presented in a classical, a p-adic and a noncommutative case. Then, within the standard quantum approach Wheeler-DeWitt equation and its general solutions, i.e. a wave function of the model, will be written, and then an adelic wave function will be constructed. Finally, thermodynamics of the model will be studied by using the Feynman-Hibbs procedure.

  6. Anisotropic higher derivative gravity and inflationary universe

    CERN Document Server

    Kao, W F

    2006-01-01

    Stability analysis of the Kantowski-Sachs type universe in pure higher derivative gravity theory is studied in details. The non-redundant generalized Friedmann equation of the system is derived by introducing a reduced one dimensional generalized KS type action. This method greatly reduces the labor in deriving field equations of any complicate models. Existence and stability of inflationary solution in the presence of higher derivative terms are also studied in details. Implications to the choice of physical theories are discussed in details in this paper.

  7. New exact solutions of Bianchi I, Bianchi III and Kantowski-Sachs spacetimes in scalar-coupled gravity theories via Noether gauge symmetries

    CERN Document Server

    Camci, U; Oz, I Basaran

    2016-01-01

    The Noether symmetry approach is useful tool to restrict the arbitrariness in a gravity theory when the equations of motion are underdetermined due to the high number of functions to be determined in the ansatz. We consider two scalar-coupled theories of gravity, one motivated by induced gravity, the other more standard; in Bianchi I, Bianchi III and Kantowski-Sachs cosmological models. For these models, we present a full set of Noether gauge symmetries, which are more general than those obtained by the strict Noether symmetry approach in our recent work. Some exact solutions are derived using the first integrals corresponding to the obtained Noether gauge symmetries.

  8. The closed-universe recollapse conjecture

    Science.gov (United States)

    Barrow, John D.; Galloway, Gregory J.; Tipler, Frank J.

    1986-12-01

    It is widely believed that all expanding S3 closed universes that satisfy the standard energy conditions recollapse to a second singularity. The authors show that this is false even for Friedmann universes: they construct an ever-expanding S3 Friedmann universe in which the matter tensor satisfies the strong, weak and dominant energy conditions and the generic condition. The authors prove a general recollapse theorem for Friedmann universes: if the positive pressure criterion, dominant energy condition and matter regularity condition hold, then an S3 Friedmann universe must recollapse. The authors show that all known vacuum solutions with Cauchy surface topology S3 or S2×S1 recollapse, and they conjecture that this is a property of all vacuum solutions of Einstein's equations with such Cauchy surfaces. The authors consider a number of Kantowski-Sachs and Bianchi IX universes with various matter tensors, and formulate a new recollapse conjecture for matter-filled universes.

  9. and Models: A Self-Similar Approach

    Directory of Open Access Journals (Sweden)

    José Antonio Belinchón

    2013-01-01

    equations (FEs admit self-similar solutions. The methods employed allow us to obtain general results that are valid not only for the FRW metric, but also for all the Bianchi types as well as for the Kantowski-Sachs model (under the self-similarity hypothesis and the power-law hypothesis for the scale factors.

  10. Noncommutative Quantum Mechanics and Quantum Cosmology

    CERN Document Server

    Bastos, Catarina; Dias, Nuno; Prata, Joao Nuno

    2009-01-01

    We present a phase-space noncommutative version of quantum mechanics and apply this extension to Quantum Cosmology. We motivate this type of noncommutative algebra through the gravitational quantum well (GQW) where the noncommutativity between momenta is shown to be relevant. We also discuss some qualitative features of the GQW such as the Berry phase. In the context of quantum cosmology we consider a Kantowski-Sachs cosmological model and obtain the Wheeler-DeWitt (WDW) equation for the noncommutative system through the ADM formalism and a suitable Seiberg-Witten (SW) map. The WDW equation is explicitly dependent on the noncommutative parameters, $\\theta$ and $\\eta$. We obtain numerical solutions of the noncommutative WDW equation for different values of the noncommutative parameters. We conclude that the noncommutativity in the momenta sector leads to a damped wave function implying that this type of noncommmutativity can be relevant for a selection of possible initial states for the universe.

  11. Noncommutative quantum cosmology

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, C; Bertolami, O [Departamento de Fisica, Institute Superior Teico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Dias, N C; Prata, J N, E-mail: cbastos@fisica.ist.utl.p, E-mail: orfeu@cosmos.ist.utl.p, E-mail: ncdias@mail.telepac.p, E-mail: joao.prata@mail.telepac.p [Departamento de Matematica, Universidade Lusofona de Humanidades e Tecnologias, Avenida Campo Grande, 376, 1749-024 Lisboa (Portugal)

    2009-06-01

    We present a phase-space noncommutative extension of Quantum Cosmology in the context of a Kantowski-Sachs (KS) minisuperspace model. We obtain the Wheeler-DeWitt (WDW) equation for the noncommutative system through the ADM formalism and a suitable Seiberg-Witten map. The resulting WDW equation explicitly depends on the phase-space noncommutative parameters, theta and eta. Numerical solutions of the noncommutative WDW equation are found and, interestingly, also bounds on the values of the nonommutative parameters. Moreover, we conclude that the noncommutativity in the momenta sector lead to a damped wave function implying that this type of noncommutativity can be relevant for a selection of possible initial states for the universe.

  12. Noncommutative Quantum Cosmology

    CERN Document Server

    García-Compéan, H; Ramírez, C

    2001-01-01

    We propose a model for noncommutative quantum cosmology by means of a deformation of minisuperspace. For the Kantowski-Sachs metric we are able to find the exact solution to the deformed Wheeler-DeWitt equation. We construct wave packets and show that noncommutativity could remarkably modify the quantum behavior of the universe. We discuss the relation with space-time noncommutativity and exhibit a program to search for the influence of noncommutativity at early times in the universe.

  13. Noncommutative Black Holes and the Singularity Problem

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, C; Bertolami, O [Instituto de Plasmas e Fusao Nuclear, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Dias, N C; Prata, J N, E-mail: cbastos@fisica.ist.utl.pt, E-mail: orfeu.bertolami@fc.up.pt, E-mail: ncdias@mail.telepac.pt, E-mail: joao.prata@mail.telepac.pt [Departamento de Matematica, Universidade Lusofona de Humanidades e Tecnologias, Avenida Campo Grande, 376, 1749-024 Lisboa (Portugal)

    2011-09-22

    A phase-space noncommutativity in the context of a Kantowski-Sachs cosmological model is considered to study the interior of a Schwarzschild black hole. Due to the divergence of the probability of finding the black hole at the singularity from a canonical noncommutativity, one considers a non-canonical noncommutativity. It is shown that this more involved type of noncommutativity removes the problem of the singularity in a Schwarzschild black hole.

  14. Multidimensional Global Monopole and Nonsingular Cosmology

    CERN Document Server

    Bronnikov, K A; Bronnikov, Kirill A.; Meierovich, Boris E.

    2003-01-01

    We consider a spherically symmetric global monopole in general relativity in $(D=d+2)$-dimensional spacetime. The monopole is shown to be asymptotically flat up to a solid angle defect in case $\\gamma < d-1$, where $\\gamma$ is a parameter characterizing the gravitational field strength. In the range $d-1< \\gamma < 2d(d+1)/(d+2)$ the monopole space-time contains a cosmological horizon. Outside the horizon the metric corresponds to a cosmological model of Kantowski-Sachs type, where spatial sections have the topology ${\\R\\times \\S}^d$. In the important case when the horizon is far from the monopole core, the temporal evolution of the Kantowski-Sachs metric is described analytically. The Kantowski-Sachs space-time contains a subspace with a $(d+1)$-dimensional Friedmann-Robertson-Walker metric, and its possible cosmological application is discussed. Some numerical estimations in case $d=3$ are made showing that this class of nonsingular cosmologies can be viable. Other results, generalizing those known ...

  15. Learning and working: types of combining university studies with employment

    OpenAIRE

    Yanbarisova, Diana

    2013-01-01

    The purpose of this paper is to mark out and describe different types of combining university studies with work among 4th year university students of Yaroslavl and Tatarstan and to analyze their influence on academic achievement. Seven ‘study-work’ types are defined on the basis of two variables: work schedule and work relatedness to specialty. 1) Full-time work from the 1st-2nd university year not in a specialty field (223 students), 2) Full-time work during senior university years not in a ...

  16. Tryon's conjecture and Energy and momentum of Bianchi Type Universes

    CERN Document Server

    Mishra, Prajyot Kumar; Pattanayak, Pradosh Ranjan; Tripathy, Sunil Kumar

    2016-01-01

    The energy and momentum of the Bianchi type $III$ universes are obtained using different prescriptions for the energy-momentum complexes in the framework of General Relativity. The energy and momentum of the Bianchi $III$ universe is found to be zero for the M\\o{}ller prescription. For all other prescriptions the energy and momentum vanish when the metric parameter $h$ vanishes. In an earlier work, Tripathy et al. \\cite{SKT15} have obtained the energy and momentum of Bianchi $VI_h$ metric and found that the energy of the Universe vanish only for $h=-1$. This result raised a question: why this specific choice?. We explored the Tryon's conjecture that 'the Universe must have a zero net value for all conserved quantities' to get some ideas on the specific values of this parameter for Bianchi type Universes.

  17. Intensional Type Theory with Guarded Recursive Types qua Fixed Points on Universes

    DEFF Research Database (Denmark)

    Birkedal, Lars; Mogelberg, R.E.

    2013-01-01

    points of guarded recursive functions. Guarded recursive types can be formed simply by taking fixed points of guarded recursive functions on the universe of types. Moreover, we present a general model construction for constructing models of the intensional type theory with guarded recursive functions...... and types. When applied to the groupoid model of intensional type theory with the universe of small discrete groupoids, the construction gives a model of guarded recursion for which there is a one-to-one correspondence between fixed points of functions on the universe of types and fixed points of (suitable......Guarded recursive functions and types are useful for giving semantics to advanced programming languages and for higher-order programming with infinite data types, such as streams, e.g., for modeling reactive systems. We propose an extension of intensional type theory with rules for forming fixed...

  18. Singularity-free Bianchi spaces with nonlinear electrodynamics

    CERN Document Server

    García-Salcedo, R; Garcia-Salcedo, Ricardo; Breton, Nora

    2004-01-01

    In this paper we present the analysis to determine the existence of singularities in spatially homogeneous anisotropic universes filled with nonlinear electromagnetic radiation. These spaces are conformal to Bianchi spaces admitting a three parameter group of motions G$_3$. We study analytical extensions as well as geodesic completeness. It is shown that with nonlinear electromagnetic field some of the Bianchi spaces are geodesically complete, like G$_3$II and G$_3$VIII; however Bianchi G$_3$IX presents the phenomenon of geodesics that are imprisoned. In contrast, diagonal Bianchi spaces like G$_3$I, G$_3$III and Kantowski-Sachs have a finite time existence ending in a scalar polynomial curvature singularity.

  19. Energy and Momentum Associated with Kasner-type Universes

    CERN Document Server

    Salti, M

    2005-01-01

    This study is purposed to elaborate the problem of energy and momentum distribution of the viscous Kasner-type universe in General theory of relativity. In this connection, we use the energy-momentum definitions of Einstein, Papapetrou and Landau-Lifshitz and obtained that the energy-momentum distributions (due to matter plus field) of the closed universes which is based on the viscous Kasner-type metric are vanishing everywhere. This results are exactly the same as obtained by Salti et al. and agree with a previous work of Rosen and Johri et al. who investigated the problem of the energy in Friedmann-Robertson-Walker universe. The result that the total energy-momentum of the universe in these models are zero support the viewpoint of Tryon.

  20. Universal fractional map and cascade of bifurcations type attractors.

    Science.gov (United States)

    Edelman, M

    2013-09-01

    We modified the way in which the Universal Map is obtained in the regular dynamics to derive the Universal α-Family of Maps depending on a single parameter α>0, which is the order of the fractional derivative in the nonlinear fractional differential equation describing a system experiencing periodic kicks. We consider two particular α-families corresponding to the Standard and Logistic Maps. For fractional αbifurcations from regular to chaotic motion in regular dynamics corresponding fractional systems demonstrate a new type of attractors--cascade of bifurcations type trajectories.

  1. Universal fractional map and cascade of bifurcations type attractors

    Science.gov (United States)

    Edelman, M.

    2013-09-01

    We modified the way in which the Universal Map is obtained in the regular dynamics to derive the Universal α-Family of Maps depending on a single parameter α >0, which is the order of the fractional derivative in the nonlinear fractional differential equation describing a system experiencing periodic kicks. We consider two particular α-families corresponding to the Standard and Logistic Maps. For fractional α <2 in the area of parameter values of the transition through the period doubling cascade of bifurcations from regular to chaotic motion in regular dynamics corresponding fractional systems demonstrate a new type of attractors—cascade of bifurcations type trajectories.

  2. E-learning in Type 1 Medical Universities of Iran

    Directory of Open Access Journals (Sweden)

    Mohammad Bagher ROKNI

    2005-07-01

    Full Text Available ABSTRACT Nowadays the Internet is the technological pedestal of organization in the information society and one of the main applications that the Internet offers is the Digital Library (DL. Each society, especially those that claim training of the public, predictably need implementation and endorsement these systems. The time of chalk and board is passed and the globalization and universal village demands a movement targeting to establish an information society. The university is said to be responsible for making "Human". In the era of information explosion, how can a university rely on a physical classroom, a tired teacher and some drowsy students listening to him? Internet "the sweet invention of man" is a bridge, between "slump" and "spurt". It is up to each authority in a university to design, employ, develop and evaluate a system embracing Internet, Multimedia, Network and so on to go parallel in modern era and to introduce the supreme system of E-learning in its program. Of different aspects of E-learning including computer networks, multimedia, search engines, electronic libraries, distance learning, and all that (Piskurich, 2003, most of the type 1 medical universities of Iran exploit, some how or another, all or some of them. These universities including Tehran, Iran, Shahid Beheshti, Mashhad, Isfahan, Tabriz, Shiraz, Ahwaz, and Kerman, at present encompass a powerful link with their audiences regarding digital libraries, search engine and authentic data bases. The present article is going to have a bird's eye view at various capacities of these universities in this regard.

  3. Dirac spinor in a nonstationary Godel-type cosmological Universe

    CERN Document Server

    Villalba, Victor M

    2015-01-01

    In the present article we solve, via separation of variables, the massless Dirac equation in a nonstationary rotating, causal G\\"odel-type cosmological universe, having a constant rotational speed in all the points of the space. We compute the frequency spectrum. We show that the spectrum of massless Dirac particles is discrete and unbounded.

  4. Bianchi type I inflationary universe in general relativity

    Indian Academy of Sciences (India)

    Raj Bali; Vimal Chand Jain

    2002-07-01

    In this paper, we have investigated Bianchi type I inflationary universe in the presence of massless scalar field with a flat potential. To get an inflationary solution, we have considered a flat region in which potential is constant. The inflationary scenario of the model is discussed in detail.

  5. Bianchi Type-I Universe with wet dark fluid

    Indian Academy of Sciences (India)

    T Singh; R Chaubey

    2008-09-01

    The Bianchi Type-I Universe filled with dark energy from a wet dark fluid has been considered. A new equation of state for the dark energy component of the Universe has been used. It is modeled on the equation of state = (ρ − ρ*) which can describe a liquid, for example water. The exact solutions to the corresponding field equations are obtained in quadrature form. The solution for constant deceleration parameter have been studied in detail for both power-law and exponential forms. The cases = 1 and = 0 have also been analysed.

  6. Total energy of the Bianchi type I universes

    CERN Document Server

    Xulu, S S

    2000-01-01

    Using the symmetric energy-momentum complexes of Landau and Lifshitz, Papapetrou, and Weinberg we obtain the energy of the universe in anisotropic Bianchi type I cosmological models . The energy (due to matter plus field) is found to be zero and this agrees with a previous result of Banerjee and Sen who investigated this problem using the Einstein energy-momentum complex. Our result supports the importance of the energy-momentum complexes and contradicts the prevailing ``folklore'' that different energy-momentum complexes could give different and hence unacceptable energy distribution in a given space-time. The result that the total energy of the universe in these models is zero supports the viewpoint of Tryon. Rosen computed the total energy of the closed homogeneous isotropic universe and found that to be zero, which agrees with the studies of Tryon.

  7. Effective Universal Coverage of Diabetes Mellitus Type 2 in Chile.

    Science.gov (United States)

    Guerrero-Núñez, Sara; Valenzuela-Suazo, Sandra; Cid-Henríquez, Patricia

    2017-04-06

    determine the prevalence of Effective Universal Coverage of Diabetes Mellitus Type 2 in Chile and its relation with the variables: Health Care Coverage of Diabetes Mellitus Type 2; Average of diabetics with metabolic control in 2011-2013; Mortality Rate for Diabetes Mellitus; and Percentage of nurses participating in the Cardiovascular Health Program. cross-sectional descriptive study with ecological components that uses documentary sources of the Ministry of Health. It was established that there is correlation between the Universal Effective Coverage of Diabetes Mellitus Type 2 and the independent variables; it was applied the Pearson Coefficient, being significant at the 0.05 level. in Chile Universal Health Care Coverage of Diabetes Mellitus Type 2 (HbA1cdesafio e oportunidade em saúde. determinar la prevalencia de la Cobertura Universal Efectiva de la diabetes mellitus tipo 2 en Chile y su relación con las variables: Cobertura de Diabetes Mellitus tipo 2, Promedio de diabéticos con control metabólico en 2011-2013, Tasa de Mortalidad por Diabetes Mellitus y Porcentaje de participación de enfermeros en el Programa de Salud Cardiovascular. estudio descriptivo transversal con componentes ecológicos, utilizando fuentes documentales del Ministerio de Salud. Se estableció que existe correlación entre la Cobertura Universal Efectiva de la Diabetes Mellitus tipo 2 y las variables independientes, aplicando el Coeficiente de Pearson, siendo significativa al nivel 0,05. en Chile la Cobertura Universal Efectiva de Diabetes Mellitus tipo 2 (HbA1c<7% en población estimada) es menor que 20%; esta se relaciona con la Tasa de Mortalidad por Diabetes Mellitus y con el Porcentaje de participación de enfermeras en el Programa de Salud Cardiovascular, que es significativa al nivel 0,01. la prevalencia de Cobertura Universal Efectiva de la Diabetes Mellitus tipo 2 es baja; sin embargo algunas regiones se destacan en la cobertura y en el control metabólico de pacientes que

  8. Homeless university students: Experiences with foyer-type service

    Directory of Open Access Journals (Sweden)

    Marty Grace

    2012-06-01

    Full Text Available Some young people who have been homeless during their secondary schooling manage to obtain a university place. These young people, and others who become homeless during their university courses, have the opportunity to build a sustainable exit from homelessness through education and support. Very little is known about how many young Australians are in this situation, or what can be done to assist them to complete their degrees. This article reports on research that aimed to document the experiences of 11 university students who had experienced homelessness. The research focussed on the difficulties that these young people faced, and the types of environments and service responses that can make a difference for them. The students were part of a larger study of a foyer-type service. The research found that these young people took longer than the standard duration to complete their degrees. Their study was facilitated by provision of stable, safe accommodation and support when they were acutely homeless, relief from other pressures such as family conflict, protection while maturing, time for overseas born including refugee young people to develop language, skills, and resources, support to heal from past damaging experiences and improve their health, assistance to gain entry to preferred university courses, and pathways into stable housing for the duration of their study.

  9. Full dynamical analysis of anisotropic scalar-field cosmology with arbitrary potentials

    CERN Document Server

    Fadragas, Carlos R; Saridakis, Emmanuel N

    2013-01-01

    We perform a detailed dynamical analysis of anisotropic scalar-field cosmologies, and in particular of the most significant Kantowski-Sachs, Bianchi I and Bianchi III cases. We follow the new and powerful method of $f$-devisers, which allows us to perform the whole analysis for arbitrary potentials. Thus, one can just substitute the specific potential form in the final results and obtain the corresponding behavior, without the need of new calculations. We find a very rich behavior, and amongst others the universe can result in isotropized solutions with observables in agreement with observations, such as de Sitter, quintessence-like, or stiff-dark energy solutions. Additionally, in the case of Kantowski-Sachs geometry we find that a cosmological bounce and turnaround are realized in a part of the parameter-space. Finally, applying the general results to the well-studied exponential and power-law potentials, we find that some of the general stable solutions disappear. This feature may be an indication that suc...

  10. A universal characteristic of type II radio bursts

    Science.gov (United States)

    Aguilar-Rodriguez, E.; Gopalswamy, N.; MacDowall, R.; Yashiro, S.; Kaiser, M. L.

    2005-12-01

    We present a study on the spectral properties of interplanetary type II radio bursts observed by the Radio and Plasma Wave (WAVES) experiment on board the Wind spacecraft. We investigated the relative bandwidth of the type II radio bursts observed by WAVES from 1997 up to 2003. We obtained three sets of events, based on the frequency domain of occurrence: 109 events in the low-frequency domain (30 KHz to 1000 kHz, detected by the RAD1 receiver), 216 events in the high-frequency domain (1-14 MHz, observed by the RAD2 receiver), and 73 events that spanned both domains (RAD1 and RAD2). Statistical results show that the average bandwidth-to-frequency ratio (BFR) was 0.28 ± 0.15, 0.26 ± 0.16, and 0.32 ± 0.15 for RAD1, RAD2, and RAD1 + RAD2, respectively. We compared our results with those obtained for ISEE-3 type II bursts and found a difference in the average BFR, which seems to be due to a selection effect. The BFR of the WAVES type II bursts is similar to that of metric type II bursts reported in published works. This suggests that the BFR is a universal characteristic, irrespective of the spectral domain. Finally, we also studied the BFR evolution with heliocentric distance using white-light observation of the associated coronal mass ejections. We found that the BFR remains roughly constant in the SOHO/LASCO field of view (i.e., from 2.1 to 32 solar radii), while the bandwidth itself decreases.

  11. Teaching Monologue Type of Language in a Technical University

    Directory of Open Access Journals (Sweden)

    Aleksandras Velička

    2011-04-01

    Full Text Available The article deals with a very urgent issue of the methods of teaching foreign languages – teaching monologue type of language in a technical university. The author analyses psychological and linguistic aspects of monologue as a subject of teaching and what could influence scientifically motivated selection of teaching methods. There are three stages of teaching monologue. They comprise the ability to speak monologue as well as the process of gaining the skills – from elementary to intermediate and advanced. The article presents a number of recommendations for practice. The main principles of the article are based on the author‘s practical experience in the teaching process as well as on the analysis of scientific data in the field. The findings could be useful for practice and theory in the field.

  12. Cosmic flows in the nearby universe from Type Ia Supernovae

    CERN Document Server

    Turnbull, Stephen J; Feldman, Hume A; Hicken, Malcolm; Kirshner, Robert P; Watkin, Richard

    2011-01-01

    Peculiar velocities are one of the only probes of very large-scale mass density fluctuations in the nearby Universe. We present new "minimal variance" bulk flow measurements based upon the "First Amendment" compilation of 245 Type Ia supernovae (SNe) peculiar velocities and find a bulk flow of 249 +/- 76 km/s in the direction l= 319 +/- 18 deg, b = 7 +/- 14 deg. The SNe bulk flow is consistent with the expectations of \\Lambda CDM. However, it is also marginally consistent with the bulk flow of a larger compilation of non-SNe peculiar velocities (Watkins, Feldman, & Hudson 2009). By comparing the SNe peculiar velocities to predictions of the IRAS Point Source Catalog Redshift survey (PSCz) galaxy density field, we find \\Omega_{m}^{0.55} \\sigma_{8,lin} = 0.40 +/- 0.07, which is in agreement with \\Lambda CDM. However, we also show that the PSCz density field fails to account for 150 +/- 43 km/s of the SNe bulk motion.

  13. The universal cut function and type II metrics

    Energy Technology Data Exchange (ETDEWEB)

    Kozameh, Carlos [FaMaF, University of Cordoba, Cordoba (Argentina); Newman, E T [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Santiago-Santiago, J G [Facultad de Ciencias Fisico Matematicas de la Universidad Autonoma de Puebla, Apartado Postal 1152, 72001, Puebla, Pue. (Mexico); Silva-Ortigoza, Gilberto [Facultad de Ciencias Fisico Matematicas de la Universidad Autonoma de Puebla, Apartado Postal 1152, 72001, Puebla, Pue. (Mexico)

    2007-04-21

    In analogy with classical electromagnetic theory, where one determines the total charge and both electric and magnetic multipole moments of a source from certain surface integrals of the asymptotic (or far) fields, it has been known for many years-from the work of Hermann Bondi-that the energy and momentum of gravitational sources could be determined by similar integrals of the asymptotic Weyl tensor. Recently, we observed that there were certain overlooked structures, defined at future null infinity, that allowed one to determine (or define) further properties of both electromagnetic and gravitating sources. These structures, families of complex 'slices' or 'cuts' of Penrose's I{sup +}, are referred to as universal cut functions. In particular, one can define from these structures a (complex) centre of mass (and centre of charge) and its equations of motion-with rather surprising consequences. It appears as if these asymptotic structures contain, in their imaginary part, a well-defined total spin-angular momentum of the source. We apply these ideas to the type II algebraically special metrics, both twisting and twist free.

  14. Holographic Protection of Chronology in Universes of the Godel Type

    CERN Document Server

    Boyda, E; Horava, P; Varadarajan, U; Boyda, Edward; Ganguli, Surya; Horava, Petr; Varadarajan, Uday

    2003-01-01

    We analyze the structure of supersymmetric Godel-like cosmological solutions of string theory. Just as the original four-dimensional Godel universe, these solutions represent rotating, topologically trivial cosmologies with a homogeneous metric and closed timelike curves. First we focus on "phenomenological" aspects of holography, and identify the preferred holographic screens associated with inertial comoving observers in Godel universes. We find that holography can serve as a chronology protection agency: The closed timelike curves are either hidden behind the holographic screen, or broken by it into causal pieces. In fact, holography in Godel universes has many features in common with de Sitter space, suggesting that Godel universes could represent a supersymmetric laboratory for addressing the conceptual puzzles of de Sitter holography. Then we initiate the investigation of "microscopic" aspects of holography of Godel universes in string theory. We show that Godel universes are T-dual to pp-waves, and use...

  15. Holographic Protection of Chronology in Universes of the Godel Type

    Energy Technology Data Exchange (ETDEWEB)

    Boyda, Edward; Ganguli, Surya; Horava, Petr; Varadarajan, Uday

    2002-12-07

    We analyze the structure of supersymmetric Godel-like cosmological solutions of string theory. Just as the original four-dimensional Godel universe, these solutions represent rotating, topologically trivial cosmologies with a homogeneous metric and closed timelike curves. First we focus on"phenomenological" aspects of holography, and identify the preferred holographic screens associated with inertial comoving observers in Godel universes. We find that holography can serve as a chronology protection agency: The closed timelike curves are either hidden behind the holographic screen, or broken by it into causal pieces. In fact, holography in Godel universes has many features in common with de Sitter space, suggesting that Godel universes could represent a supersymmetric laboratory for addressing the conceptual puzzles of de Sitter holography. Then we initiate the investigation of"microscopic" aspects of holography of Godel universes in string theory. We show that Godel universes are T-dual to pp-waves, and use this fact to generate new Godel-like solutions of string and M-theory by T-dualizing known supersymmetric pp-wave solutions.

  16. A higher-dimensional Bianchi type-I inflationary Universe in general relativity

    Indian Academy of Sciences (India)

    S D Katore; K S Adhav; V G Mete; A Y Shaikh

    2012-01-01

    A five-dimensional Bianchi type-I inflationary Universe is investigated in the presence of massless scalar field with a flat potential. To get an inflationary Universe, a flat region in which the potential is constant is considered. Some physical and kinematical properties of the Universe are also discussed.

  17. String cosmology in Bianchi type-VI0 dusty Universe with electromagnetic field

    Indian Academy of Sciences (India)

    Hassan Amirhashchi

    2013-04-01

    In this paper, the effect of electromagnetic field in the string Bianchi type-VI0 Universe is investigated. Einstein’s field equations have been solved exactly with suitable physical assumptions for two types of strings: (i) massive strings and (ii) Nambu strings. It is found that when the Universe is dominated by massive strings, the existence of electromagnetic field is necessary as it accelerates the expansion of the Universe. But when our Universe is dominated by Nambu strings, the electromagnetic field does not have significant effect on the evolution of the Universe. We have also shown that the early massive string-dominated Universe got converted to Nambu string-dominated Universe later. Our models are derived from an early deceleration phase to an accelerating phase which is consistent with the recent observations of supernovae type-Ia. The physical and geometrical behaviour of these models are also discussed.

  18. Bianchi Type-V universe with a viscous fluid and -term

    Indian Academy of Sciences (India)

    T Singh; R Chaubey

    2007-05-01

    We have studied the evolution of a homogeneous, anisotropic universe given by a Bianchi Type-V cosmological model filled with viscous fluid, in the presence of cosmological constant . The role of viscous fluid and -term in the Bianchi Type-V universe has been studied.

  19. Psychological Profile of University Students with Different Types of Disabilities

    Science.gov (United States)

    Dong, Shengli; Lucas, Margaretha S.

    2014-01-01

    Increasing numbers of students with disabilities attend colleges and universities after graduation from high school, but studies show that students with disabilities lag behind academically and fail to make progress and complete academic programs at a level and a timeframe comparable to their peers without disabilities. Studies are needed that…

  20. Dynamical fluid-type Universe scenario with dust and radiation

    CERN Document Server

    Mihu, Denisa-Andreea

    2016-01-01

    Within the context of a cosmic space whose energy source is modeled with a perfect fluid, a uniform model of Universe based on a standard FRW cosmology containing decoupled mixed matter sources namely stiff matter and cosmic dust together with a positive cosmological constant, has been studied. Within the scenario of a $k=0-$ spatially-flat geometry, we analysed the geometrodynamics of the theoretical cosmology. For the model with an added cosmological constant, the main scope was to point out the effects of it on the universe' dynamics. In this last case, the thermodynamics of the model was also considered together with the relation between the cosmological energy density and fluid pressure in terms of the inverse function of the equation of state.

  1. Misclassified type 1 AGNs in the local universe

    CERN Document Server

    Woo, Jong-Hak; Park, Daeseong; Bae, Hyun-Jin; Kim, Jae-Hyuk; Lee, Seung-Eun; Kim, Sang Chul; Kwon, Hong-Jin

    2014-01-01

    We search for misclassified type 1 AGNs among type 2 AGNs identified with emission line flux ratios, and investigate the properties of the sample. Using 4\\,113 local type 2 AGNs at $0.02type 1 AGNs among type 2 AGN sample is $\\sim$3.5%, implying that a large number of missing type 1 AGN population may exist. The misclassified type 1 AGNs have relatively low luminosity with a mean broad \\Ha\\ luminosity, log L$_{H\\alpha} = 40.50\\pm0.35$ \\ergs, while black hole mass of the sample is comparable to that of the local black hole population, with a mean black hole mass, log M$_{\\rm BH} = 6.94\\pm0.51$ M$_{\\odot}$. The mean Eddington ratio of the sample is log L$_{\\rm bol}$/L$_{\\rm Edd}$ = $-2.00\\pm0.40$, indicating tha...

  2. Thyroid dysfunction in type 2 diabetics seen at the University ...

    African Journals Online (AJOL)

    Chigo Okwuosa

    Summary:Thyroid dysfunction complicates the metabolic derangement observed in Diabetes ... prevalence of thyroid dysfunction in type-2 diabetics in our environment is not known. ... hypothyroidism in the rare Crow-Fucase syndrome ...

  3. The Incidence and Types of Occupational Role Stress among University Research Administrators

    Science.gov (United States)

    Katsapis, Christine C. A.

    2012-01-01

    This study explored the types of stressors prevalent in the self-reports of university research administrators (URAs) and examined whether or not the degree or type of role stress was influenced by: a) the affiliation of their office unit within their institution, or b) their type. Randomly selected members of NCURA were invited via e-mail to…

  4. Continuous indicator fields: a novel universal type of molecular fields.

    Science.gov (United States)

    Sitnikov, Gleb V; Zhokhova, Nelly I; Ustynyuk, Yury A; Varnek, Alexandre; Baskin, Igor I

    2015-03-01

    A novel type of molecular fields, Continuous Indicator Fields (CIFs), is suggested to provide 3D structural description of molecules. The values of CIFs are calculated as the degree to which a point with given 3D coordinates belongs to an atom of a certain type. They can be used similarly to standard physicochemical fields for building 3D structure-activity models. One can build CIF-based 3D structure-activity models in the framework of the continuous molecular fields approach described earlier (J Comput-Aided Mol Des 27 (5):427-442, 2013) for the case of physicochemical molecular fields. CIFs are thought to complement and further extend traditional physicochemical fields. The models built with CIFs can be interpreted in terms of preferable and undesirable positions of certain types of atoms in space. This helps to understand which changes in chemical structure should be made in order to design a compound possessing desirable properties. We have demonstrated that CIFs can be considered as 3D analogues of 2D topological molecular fragments. The performance of this approach is demonstrated in structure-activity studies of thrombin inhibitors, multidentate N-heterocyclic ligands for Am(3+)/Eu(3+) separation, and coloring dyes.

  5. Relationship between Personality Types and Career Choices of Undergraduate Students: A Case of Moi University, Kenya

    Science.gov (United States)

    Kemboi, Rebecca J. Kimongo; Kindiki, Nyaga; Misigo, Benard

    2016-01-01

    This study investigated the relationship between personality types and career choices of undergraduate students of Moi University. In Kenya, students are allowed to revise their career choices at various levels of education before they settle on one course of study in the University. The process of choosing careers begins in form three where…

  6. Variations in University Students' Scientific Reasoning Skills across Majors, Years, and Types of Institutions

    Science.gov (United States)

    Ding, Lin; Wei, Xin; Liu, Xiufeng

    2016-01-01

    This study investigates three aspects--university major, year, and institution type--in relation to student scientific reasoning. Students from three majors (science, engineering, and education), four year levels (years 1 through 4), and two tiers of Chinese universities (tiers 1 and 2) participated in the study. A large-scale written assessment…

  7. Stochastic eternal inflation in a Bianchi type I universe

    Science.gov (United States)

    Kohli, Ikjyot Singh; Haslam, Michael C.

    2016-01-01

    The phenomenon of stochastic eternal inflation is studied for a chaotic inflation potential in a Bianchi type I spacetime background. After deriving the appropriate stochastic Klein-Gordon equation, we give details on the conditions for eternal inflation. It is shown that for eternal inflation to occur, the amount of anisotropy must be small. In fact, it is shown that eternal inflation will only take place if the shear anisotropy variables take on values within a small region of the interior of the Kasner circle. We then calculate the probability of eternal inflation occurring based on techniques from stochastic calculus.

  8. Annotated catalogue of the types of Braconidae (Hymenoptera) in the Oxford University Museum

    NARCIS (Netherlands)

    Achterberg, van C.; O'Toole, C.

    1993-01-01

    An annotated catalogue of the types of Braconidae in the Hope Entomological Collections, University Museum, Oxford, is given. The following new combinations are proposed: Aleiodes rothneyi (Shenefelt, 1975); Aniphiaulax agraensis (Cameron, 1897); Balcemena ruficollis (Cameron, 1899); Bicarinibracon

  9. Annotated catalogue of the types of Braconidae (Hymenoptera) in the Oxford University Museum

    NARCIS (Netherlands)

    Achterberg, van C.; O'Toole, C.

    1993-01-01

    An annotated catalogue of the types of Braconidae in the Hope Entomological Collections, University Museum, Oxford, is given. The following new combinations are proposed: Aleiodes rothneyi (Shenefelt, 1975); Aniphiaulax agraensis (Cameron, 1897); Balcemena ruficollis (Cameron, 1899); Bicarinibracon

  10. Stochastic Eternal Inflation in a Bianchi Type I Universe

    CERN Document Server

    Kohli, Ikjyot Singh

    2015-01-01

    In this paper, we analyze a Bianchi Type I model with a scalar field in a chaotic inflation potential, $V(\\phi) = \\frac{1}{2}\\phi^2$ in the context of stochastic eternal inflation. We use the typical slow-roll approximation in combination with expansion-normalized variables in an orthonormal frame approach to obtain a dynamical system which describes the dynamics of the shear anisotropy and the inflaton field. We first show that the dynamics of the inflaton field can be decoupled from the dynamics of the shear anisotropy. We then use a fixed-points analysis in combination with global techniques from topological dynamical systems theory to prove that the cosmological model under consideration isotropizes irrespective of an inflationary epoch, which has also described by other authors who have investigated a Bianchi Type I model under similar configurations. We then show that for inflation to occur, the amount of anisotropy must be very small. We also give a description of the stochastic dynamics of the inflato...

  11. Dynamics of anisotropic f(R) cosmology

    CERN Document Server

    Leon, Genly

    2010-01-01

    We construct general anisotropic cosmological scenarios governed by an f(R) gravitational sector. Focusing then on Kantowski-Sachs geometries in the case of $R^n$-gravity we perform a detailed phase-space analysis. We find that at late times the universe can result to a state of accelerating expansion, and additionally, for a particular n-range (2universe. Finally, we can also obtain the realization of the cosmological bounce and turnaround, as well as of cyclic cosmology. These features indicate that anisotropic geometries in modified gravitational frameworks present radically different cosmological behaviors comparing to the simple isotropic scenarios.

  12. Psychological Type and Undergraduate Student Achievement in Pharmacy Course in Military Medical University

    Science.gov (United States)

    Shi, Ru; Shan, Shou-qin; Tian, Jian-quan

    2007-01-01

    The Myers-Briggs Type Indicator (MBTI) was given to 264 students in an undergraduate Pharmacy course at a military medical university. Selected MBTI personality types were compared for achievement in the course using a t-test to compare total points earned. High grades were earned by students stronger in the traits of introversion (I) and judgment…

  13. Universal Approximation of a Class of Interval Type-2 Fuzzy Neural Networks in Nonlinear Identification

    Directory of Open Access Journals (Sweden)

    Oscar Castillo

    2013-01-01

    Full Text Available Neural networks (NNs, type-1 fuzzy logic systems (T1FLSs, and interval type-2 fuzzy logic systems (IT2FLSs have been shown to be universal approximators, which means that they can approximate any nonlinear continuous function. Recent research shows that embedding an IT2FLS on an NN can be very effective for a wide number of nonlinear complex systems, especially when handling imperfect or incomplete information. In this paper we show, based on the Stone-Weierstrass theorem, that an interval type-2 fuzzy neural network (IT2FNN is a universal approximator, which uses a set of rules and interval type-2 membership functions (IT2MFs for this purpose. Simulation results of nonlinear function identification using the IT2FNN for one and three variables and for the Mackey-Glass chaotic time series prediction are presented to illustrate the concept of universal approximation.

  14. Phase-Space Noncommutative Quantum Cosmology

    CERN Document Server

    Bastos, Catarina; Dias, Nuno Costa; Prata, João Nuno

    2007-01-01

    We present a noncommutative extension of Quantum Cosmology and study the Kantowski-Sachs (KS) cosmological model requiring that the two scale factors of the KS metric, the coordinates of the system, and their conjugate canonical momenta do not commute. Through the ADM formalism, we obtain the Wheeler-DeWitt (WDW) equation for the noncommutative system. The Seiberg-Witten map is used to transform the noncommutative equation into a commutative one, i.e. into an equation with commutative variables, which depend on the noncommutative parameters, $\\theta$ and $\\eta$. Numerical solutions are found both for the classical and the quantum formulations of the system. These solutions are used to characterize the dynamics and the state of the universe. From the classical solutions we obtain the behavior of quantities such as the volume expansion, the shear and the characteristic volume. However the analysis of these quantities does not lead to any restriction on the value of the noncommutative parameters, $\\theta$ and $\\...

  15. Bianchi Type V Matter Filled Universe with Varying Lambda Term in General Relativity

    CERN Document Server

    Yadav, Anil Kumar

    2009-01-01

    Bianchi type V matter filled universe with varying lambda in general relativity are investigated by using the law of variation for the generalized mean Hubble parameter. This yields the constant value of deceleration parameter and generates two types of solutions for the average scale factor one is of power law type and other is of exponential type. The cosmological constant is found to be a decreasing function of time, which is supported by results from recent type Ia supernovae observations. Also it has been found that cosmological constant affects entropy. Some physical and geometric behaviour of the models are discussed.

  16. Testing the isotropy of the Universe by using the JLA compilation of type-Ia supernovae

    CERN Document Server

    Lin, Hai-Nan; Chang, Zhe; Li, Xin

    2015-01-01

    We probe the possible anisotropy in the accelerated expanding Universe by using the JLA compilation of type-Ia supernovae. We constrain the amplitude and direction of anisotropy in the anisotropic cosmological models. For the dipole-modulated $\\Lambda$CDM model, the anisotropic amplitude has an upper bound $D<1.04\\times10^{-3}$ at the $68\\%$ confidence level. Similar results are found in the dipole-modulated $w$CDM and CPL models. Our studies show that there are no significant evidence for the anisotropic expansion of the Universe. Thus the Universe is still well compatible with the isotropy.

  17. Model-Independent Reconstruction of the Expansion History of the Universe from Type Ia Supernovae

    CERN Document Server

    Benitez-Herrera, S; Hillebrandt, W; Mignone, C; Bartelmann, M; Weller, J

    2011-01-01

    Based on the largest homogeneously reduced set of Type Ia supernova luminosity data currently available -- the Union2 sample -- we reconstruct the expansion history of the Universe in a model-independent approach. Our method tests the geometry of the Universe directly without reverting to any assumptions made on its energy content. This allows us to constrain Dark Energy models and non-standard cosmologies in a straightforward way. The applicability of the presented method is not restricted to testing cosmological models. It can be a valuable tool for pointing out systematic errors hidden in the supernova data and planning future Type Ia supernova cosmology campaigns.

  18. Generalized holographic Ricci dark energy and generalized second law of thermodynamics in Bianchi Type I universe

    CERN Document Server

    Li, En-Kun; Geng, Jin-Ling; Duan, Peng-Fei

    2016-01-01

    Generalized second law of thermodynamics in the Bianchi type I universe with the generalized holographic Ricci dark energy model is studied in this paper. The behavior of dark energy's equation of state parameter indicates that it is matter-like in the early time of the universe but phantom-like in the future. By analysing the evolution of the deviations of state parameter and the total pressure of the universe, we find that for an anisotropic Bianchi type I universe, it transits from a high anisotropy stage to a more homogeneous stage in the near past. Using the normal entropy given by Gibbs' law of thermodynamics, it is proved that the generalized second law of thermodynamics does not always satisfied throughout the history of the universe when we assume the universe is enclosed by the generalized Ricci scalar radius $R_{gr}$. It becomes invalid in the near past to the future, and the formation of the galaxies will be helpful in explaining such phenomenon, for that the galaxies's formation is an entropy inc...

  19. Exploring Diverse Effects of Four Types of Mobility on University Entrepreneurship

    Directory of Open Access Journals (Sweden)

    Satoko Yasuda

    2016-12-01

    Full Text Available This study explores the mechanism by which mobility influences university entrepreneurship through an empirical analysis of Japanese scientists working for the University of Tokyo. It presents theory-driven typology of mobility and applies it to the knowledge-transfer context.  First, this paper subdivides previously-studied mobility into four types – job mobility (JM, sector mobility (SM, international mobility (IM, and the educational background mobility (EBM. Then, it empirically shows that both JM and IM have positive and significant correlation with university entrepreneurship, whereas neither SM nor EBM does. Based on the result, this study discusses that JM and IM accelerate the formation of skills necessary for the commercialization of university research; however, SM and EBM may have no impact on it.

  20. Energy of the Universe in Bianchi-type I Models in Moller's Tetrad Theory of Gravity

    CERN Document Server

    Aydogdu, O; Aydogdu, Oktay; Salti, Mustafa

    2005-01-01

    In this paper, using the energy definition in Moller's tetrad theory of gravity we calculate the total energy of the universe in Bianchi-type I cosmological models which includes both the matter and gravitational fields. The total energy is found to be zero and this result agrees with a previous works of Banerjee-Sen who investigated this problem using the general relativity version of the Einstein energy-momentum complex and Xulu who investigated same problem using the general relativity versions of the Landau-lifshitz, Papapetrou and Weinberg's energy-momentum complexes. The result that total energy of the universe in Bianchi-type I universes is zero supports the viewpoint of Tryon.

  1. Types of spin-offs in a university context: a classification proposal

    Directory of Open Access Journals (Sweden)

    José María Beraza Garmendia

    2012-02-01

    Full Text Available In the last times a growing emphasis exists in the commercialization of the university investigation, in particular, through the creation of companies (spin-offs. However, the phenomena that the concept of university spinoff is about embracing are not homogeneous. For this reason, it seems convenient to identify the different realities that it includes organizing them by means of typologies. The present work analyzes this question by means of a revision of the existent literature, and it proposes a classification that distinguishes four spin-offs types: independent, linked, joint venture and subsidiary. The three key approaches used to distinguish these four types of university spin-offs are: the implication or not of the investigator as entrepreneur, the nature of the transferred knowledge and the participation of external partners in the new company.

  2. Quark matter coupled to domain walls in Bianchi types II, VIII and IX Universes

    Indian Academy of Sciences (India)

    S D Katore; M M Sancheti; S P Hatkar

    2014-10-01

    In this study of Bianchi types II, VIII and IX Universes, quark matter coupled to domain walls in the context of general relativity are explored. To obtain deterministic solution of the Einstein’s field equations, various techniques are adopted. The features of the obtained solution are discussed.

  3. Typing Compared with Handwriting for Essay Examinations at University: Letting the Students Choose

    Science.gov (United States)

    Mogey, Nora; Paterson, Jessie; Burk, John; Purcell, Michael

    2010-01-01

    Students at the University of Edinburgh do almost all their work on computers, but at the end of the semester they are examined by handwritten essays. Intuitively it would be appealing to allow students the choice of handwriting or typing, but this raises a concern that perhaps this might not be "fair"--that the choice a student makes,…

  4. Growth of frequently Birkhoff-universal functions of exponential type on rays

    OpenAIRE

    Beise, Hans-Peter

    2012-01-01

    We consider growth conditions for (frequently) Birkhoff-universal functions of exponential type with respect to the different rays emanating from the origin. For that purpose, we investigate their (conjugate) indicator diagram or, equivalently, their indicator function. Some known results, where growth is measured with respect to the maximum modulus, are extended.

  5. The mammal type specimens at the Natural History Museum, University of Oslo, Norway.

    Science.gov (United States)

    Wiig, Oystein; Bachmann, Lutz

    2013-11-15

    A catalog of mammalian type specimens in the collections of Natural History Museum, University of Oslo, Norway, is presented. All type specimens in the Museum's mammal collection were revisited and the respective label information was compared with the data provided in the original descriptions. Most taxa were described from type series with no specimen particularly assigned to holotype. The compiled catalog of the type specimens is not intended as a taxonomic revision of the respective taxa, which is why we have not designated lectotypes from the collection's type series. Specimens that were clearly marked as "the type" in the original description were considered holotypes. The catalog consists of 19 taxa, with the year of authority corrected for three taxa.

  6. Type 1a Supernovae Observations are Consistent with a Static Universe

    CERN Document Server

    Crawford, David F

    2013-01-01

    The finding that the widths of type 1a supernovae light curves increase with redshift appears to provide strong evidence for an expanding universe. This paper argues that the observations are consistent with a static cosmology where redshift is produced by a tired-light mechanism. For type 1a supernovae there is a strong correlation between peak luminosity and the width of the light curve, the Phillips relation. In an expanding universe this relation is used to combine the absolute magnitude with the stretch factor to obtain a corrected apparent peak magnitude. In a model for a static universe where width rather than stretch factor is used there is different apparent peak magnitude. Since the analysis program explicitly uses the stretch factor rather than width in its use of the Phillips relation its application in a static universe produces a systematic bias in the peak magnitudes. In addition, the stretch selection that is valid for an expanding universe produces another small bias in the data that must be ...

  7. Content and technical evaluation of Type III Iranian medical universities\\' websites

    Directory of Open Access Journals (Sweden)

    Khadejeh Shabankareh

    2016-05-01

    Full Text Available Background: Besides the role that universities websites have in reflection of universities’ educational and research activities, they have also significant importance in promotion of universities’ national and international ranking in webometrics ranking of world universities and also in webometric ranking of Islamic world Science Citation and subsequently obtaining national and international credibility and gaining student and funding. So, continuous evaluation of universities websites in different aspects, especially based on considering index of these ranking systems, is important. Therefore, present study aimed to review the situation of Type 3 Iranian medical universities’ websites based on content and technical features effecting on promotion of webometric rank. Materials and Methods : Present study is a survey with descriptive approach which descriptive the present situation of Type 3 Iranian medical universities’ websites. Data were collected using a researcher-made checklist which was consisted of two parts including content criteria effecting on webometric ranking (50 criteria and technical criteria of search engines optimization (52 criteria. Content evaluation of websites was done by researcher direct referring and observing. In order to evaluation of these websites, based on technical criteria of search engines optimization, automatic tools about website evaluation were used. Data were analyzed by SPSS20. Results: The finding of this study showed that, Gonabad, Bushehr & Shahrekord universities of medical sciences have the most accommodation with the research checklist.  Bam, Dezful & Jiroft universities of medical sciences have the least accommodation. According to research findings less than 50 percent of the research community, reached more than 50 percent of the criteria in checklist. Conclusion: Evaluation of studied websites indicated that whole websites are far from ideal situation. So type 3 medical universities

  8. RELATIONSHIP BETWEEN TYPE D PERSONALITY AND ANHEDONIA: A DIMENSIONAL STUDY OF UNIVERSITY STUDENTS.

    Science.gov (United States)

    Lussier, Axelle; Loas, Gwenolé

    2015-06-01

    Type D personality-characterized by negative affectivity and social inhibition-and anhedonia have independently been found to be significantly associated with depression or suicidal ideation in the general population or in psychiatric subjects. The aim of the study was to evaluate the association between Type D personality and anhedonia in a population of 204 university students (102 men, 102 women) after controlling for depression as a confounding variable. Type D personality was evaluated using the Type D scale, anhedonia with the Snaith-Hamilton Pleasure Scale, and depression with the Beck Depression Inventory-II. Significant correlations were found between social inhibition and anhedonia before and after adjustment for depression. In women, a Sobel test indicated significant mediation by social inhibition of the relationship between anhedonia and depression. Results suggested that the social inhibition component of Type D personality could constitute a poor prognosis factor.

  9. Universal filters of arbitrary order and type employing square-root-domain technique

    Science.gov (United States)

    Khanday, F. A.; Psychalinos, C.; Shah, N. A.

    2014-07-01

    Novel Single Input Multiple Output (SIMO) and Multiple Input Single Output (MISO) universal filter topologies of arbitrary order and type are introduced in this paper. The proposed topologies have been realised by employing Square-Root Domain (SRD) technique. An offered benefit of the universal filter topologies is that only grounded capacitors are required for their implementations and the resonant frequency of the filters can be electronically controlled by an appropriate dc current. The proposed universal filters simultaneously offer all the five standard filtering functions i.e. Lowpass (LP), Highpass (HP) and Bandpass (BP), Bandstop (BS) and Allpass (AP) frequency responses. In addition, the SIMO topology is generic in the sense that it can yield four different stable filter configurations. Two design examples are provided in each configuration and the correct operation of the corresponding topologies has been evaluated through the PSPICE software with BSIM 0.35-µm CMOS process model parameters.

  10. Energy-Momentum in viscous Kasner-type Universe in Bergmann-Thomson Formulations

    CERN Document Server

    Salti, M; Salti, Mustafa; Havare, Ali

    2005-01-01

    Using the Bergmann-Thomson energy momentum complex and its tele-parallel gravity version, we obtain the energy and momentum of the universe in viscous Kasner-type cosmological models. The energy and momentum components (due to matter plus field) are found to be zero and this agree with a previous work of Rosen and Johri et al. who investigated the problem of the energy in Friedmann-Robertson-Walker universe. The result that the total energy and momentum components of the universe in these models is zero supports the viewpoint of Tryon. Rosen found that the energy of the Friedmann-Robertson-Walker space-time is zero, which agrees with the studies of Tryon.

  11. Energy-Momentum in the Viscous Kasner-type Universe in Teleparallel Gravity

    CERN Document Server

    Salti, M

    2005-01-01

    Using the teleparallel gravity versions of the Einstein and Landau-Lifshitz's energy and/or momentum complexes, I obtain the energy and momentum of the universe in viscous Kasner-type cosmological models. The energy and momentum components (due to matter plus field) are found to be zero and this agree with a previous work of Rosen and Johri it et al. who investigated the problem of the energy in Friedmann-Robertson-Walker universe. The result that the total energy and momentum components of the universe in these models is zero same as Bergmann-Thomson's energy-momentum and props the viewpoint of Tryon. Rosen found that the energy of the Friedmann-Robertson-Walker space-time is zero, which agrees with the studies of Tryon.

  12. Constraining anisotropy of the universe from different groups of type-Ia supernovae

    CERN Document Server

    Chang, Zhe; Lin, Hai-Nan; Wang, Sai

    2014-01-01

    Recent released Planck data and other astronomical observations show that the universe may be anisotropic on large scales. Inspired by this, anisotropic cosmological models have been proposed. We note that the Finsler-Randers spacetime provides an appropriate framework for the anisotropic cosmology. By adding an arbitrary 1-form to the Friedmann-Robertson-Walker (FRW) line element, a privileged axis in the universe is picked out. The distance-redshift relation is modified to be direction-dependent. We wish that the anisotropic cosmological model may be tested crossly by independent observations. Type-Ia supernovae (SNe Ia) calibrated from four different light curve fitters are used to constrain possible anisotropy of the universe. The magnitudes of anisotropy are all between 2% --- 5%, but the systematic uncertainty cannot be excluded. The directions of privileged axis seem to differ from each other. The statistical significance is not high enough to make a convincing conclusion. Nevertheless, the $1\\sigma$ c...

  13. Energy Associated with Bianchi Type V10 Universe in Teleparallel Gravity

    CERN Document Server

    Salti, M

    2006-01-01

    We obtain the energy and momentum distributions of the universe in the Bianchi type V10 spacetime in Moller's tetrad theory of gravity. The energy-momentum (due to matter and fields including gravity) are found to be zero. The results are exactly the same as obtained by Radinschi for a model of the universe based on the Bianchi type V10 metric using the energy and/or momentum prescriptions of Tolman, Bergmann-Thomson, Moller, Einstein, Landau-Lifshitz in general relativity. The result that the total energy and momentum components of the universe are zero supports the viewpoints of Albrow and Tryon. It is also independent of the teleparallel dimensionless coupling constant, which means that it is valid in any teleparallel model. The results we obtained support the viewpoint of Lessner that the Moller energy-momentum formulation is powerful concept to calculate energy and momentum distributions associated with the universe, and sustains the importance of the energy-momentum definitions in the evaluation of the ...

  14. Questions and Implications of an Accelerating Universe Inferred from Type Ia Supernovae Observations.

    Science.gov (United States)

    Choudhury, D. C.; Kraft, David W.

    2001-04-01

    Measurements of distance to Type Ia supernovae have been interpreted as evidence for an accelerating expansion of the Universe. There is, however, no known compatible theoretical framework to account for this effect. Proposed mechanisms include introduction of a new type of matter (``dark energy" or ``quintessence") or invocation of Einstein's cosmological constant which, in modern terms, corresponds to vacuum energy associated with quantum fluctuations. Yet there are no experimental observations to support the existence of such matter or energy associated with our Universe. The goal of the present work is to examine whether the conclusion that the Universe is accelerating is conclusive. Evidence for an accelerating expansion is based on measurements of the redshift and luminosity of supernovae billions of light years away. These measurements depend on the velocity of light which itself depends on the medium of propagation. Hence it is critical to analyze the properties of the medium; of relevance are the mean matter density, the critical density, the Hubble time and the deceleration parameter. Our analysis focuses on the fact that these quantities are not constant in time but rather change as the Universe expands. The results and conclusion of our investigation will be discussed.

  15. Non-vacuum Solutions of Bianchi Type VI_0 Universe in f(R) Gravity

    CERN Document Server

    Sharif, M

    2010-01-01

    In this paper, we solve the field equations in metric f(R) gravity for Bianchi type VI_0 spacetime and discuss evolution of the expanding universe. We find two types of non-vacuum solutions by taking isotropic and anisotropic fluids as the source of matter and dark energy. The physical behavior of these solutions is analyzed and compared in the future evolution with the help of some physical and geometrical parameters. It is concluded that in the presence of isotropic fluid, the model has singularity at $\\tilde{t}=0$ and represents continuously expanding shearing universe currently entering into phantom phase. In anisotropic fluid, the model has no initial singularity and exhibits the uniform accelerating expansion. However, the spacetime does not achieve isotropy as $t\\rightarrow\\infty$ in both of these solutions.

  16. Variations in University Students' Scientific Reasoning Skills Across Majors, Years, and Types of Institutions

    Science.gov (United States)

    Ding, Lin; Wei, Xin; Liu, Xiufeng

    2016-10-01

    This study investigates three aspects—university major, year, and institution type—in relation to student scientific reasoning. Students from three majors (science, engineering, and education), four year levels (years 1 through 4), and two tiers of Chinese universities (tiers 1 and 2) participated in the study. A large-scale written assessment was conducted using the Lawson's Classroom Test of Scientific Reasoning (LCTSR). A series of analysis of variance showed that, although science and engineering majors exhibited higher reasoning skills than education majors and first-tier university attendees higher than second-tier university attendees, student reasoning skills measured by the LCTSR remained nearly constant across the four year levels of higher education, a recurring pattern for all majors and university tiers. Results suggest that current higher education in China has little influence on student scientific reasoning, regardless of what students learn, how long they receive higher education, and what type of institutions they attend. Implications of the study call our attention to the status quo and urge us to rethink meaningful ways that can help students increase key proficiencies needed in scientific practices, such as successful reasoning skills.

  17. Dynamics of a Vacuum Bianchi Type V Universe with an Arbitrary Cosmological Constant

    CERN Document Server

    Kohli, Ikjyot Singh

    2016-01-01

    In this paper, we describe the dynamics of a Bianchi Type V vacuum universe with an arbitrary cosmological constant. We begin by using an orthonormal frame approach to write Einstein's field equations as a coupled system of first-order ordinary differential equations. The equilibrium points of the resulting dynamical system were found to be expanding and contracting de Sitter universe solutions, a Minkowski spacetime solution, and static Anti-de Sitter universe solutions, which were characterized by a negative cosmological constant in addition to constant negative spatial curvature. While the expanding de Sitter universe solution was found to be globally stable for $\\Lambda > 0$, we also show that the AdS solution is globally stable for $\\Lambda < 0$. The work in this paper shows that it as at least plausible that the cosmological constant that we observe to be positive today may have had different, but, perhaps \\emph{discrete} values at different epochs in the history of the universe's evolution. That is,...

  18. Energy and Momentum of the Bianchi-I Type Universes in Tele-parallel Gravity

    CERN Document Server

    Salti, M; Salti, Mustafa; Havare, Ali

    2005-01-01

    In this paper, considering the tele-parallel gravity versions of the Einstein and Landau-Lifshitz energy-momentum prescriptions energy and momentum distribution of the universe based on the Bianchi-I type metrics which includes both the matter and gravitational fields is found to be zero and this results are the same as a previous works of Banerjee-Sen who investigated the same problem in general relativity by using Einstein energy-momentum complex and Xulu who used the general relativity versions of the Landau-lifshitz, Papapetrou and Weinberg energy-momentum complexes for the Bianchi-I type space-times. Another point is that our study agree with the previous works of Cooperstock-Israelit, Rosen, Johri et al. and the previous work of us. The result that total energy of the universe in Bianchi type I universe is supports the viewpoint of Albrow and Tryon and valid not only in the tele-parallel equivalent of general relativity, but also in any tele-parallel model.

  19. Type-I and type-II Weyl fermions, topological depletion, and universal subleading scaling across topological phase transitions

    Science.gov (United States)

    Sun, Fadi; Ye, Jinwu

    2017-07-01

    It is well established that physical quantities satisfy scaling functions across a quantum phase transition with an order parameter. It remains an open problem if there are scaling functions across a topological quantum phase transition (TQPT) with extended Fermi surfaces (FSs). Here, we study a simple system of fermions hopping in a cubic lattice subject to Weyl-type spin-orbit coupling (SOC). As one tunes the SOC parameter at half filling, the system displays both type-I and type-II Weyl fermions and also various TQPTs driven by the collision of particle-particle or hole-hole Weyl FSs. At zero temperature, the TQPT is found to be third order, and its critical exponents are determined. Then we investigate if the physical quantities such as specific heat, compressibility, and magnetic susceptibilities satisfy any sort of scaling across the TQPT. In contrast to all the previous cases in quantum or topological transitions, we find that although the leading terms are nonuniversal and cutoff dependent, the subleading terms are nonanalytic and satisfy universal scaling relations. The subleading scaling leads to topological depletions which show non-Fermi-liquid corrections and √{T } quantum cusps. One can also form a topological Wilson ratio from the subleading scalings of two conserved quantities such as the specific heat and the compressibility. One may also interpret the type-I and type-II Weyl fermions as a TQPT driven by the collision of particle-hole Weyl FSs. Experimental realizations and detections in cold-atom systems and materials with SOC are discussed.

  20. Exploring Vacuum Energy in a Two-Fluid Bianchi Type I Universe

    CERN Document Server

    Kohli, Ikjyot Singh

    2014-01-01

    We use a dynamical systems approach based on the method of orthonormal frames to study the dynamics of a two-fluid, non-tilted Bianchi Type I cosmological model. In our model, one of the fluids is a fluid with bulk viscosity, while the other fluid assumes the role of a cosmological constant and represents nonnegative vacuum energy. We begin by completing a detailed fixed-point analysis of the system which gives information about the local sinks, sources and saddles. We then proceed to analyze the global features of the dynamical system by using topological methods such as finding Lyapunov and Chetaev functions, and finding the $\\alpha$- and $\\omega$-limit sets using the LaSalle invariance principle. The fixed points found were a flat Friedmann-LeMa\\^{\\i}tre-Robertson-Walker (FLRW) universe with no vacuum energy, a de Sitter universe, a flat FLRW universe with both vacuum and non-vacuum energy, and a Kasner quarter-circle universe. We also show in this paper that the vacuum energy we observe in our present-day...

  1. The Universal Askey-Wilson Algebra and DAHA of Type (C_1^∨,C_1

    Directory of Open Access Journals (Sweden)

    Paul Terwilliger

    2013-07-01

    Full Text Available Around 1992 A. Zhedanov introduced the Askey-Wilson algebra AW(3. Recently we introduced a central extension $Delta_q$ of AW(3 called the universal Askey-Wilson algebra. In this paper we discuss how $Delta_q$ is related to the universal DAHA $hat H_q$ of type$(C^vee_1, C_1$. Our main result is an algebra injection $psi: Delta_q o hat H_q$. We compute the image under $psi$ of various central elements in $Delta_q$. We describe how the Artin braid group $B_3$ acts on $Delta_q$ and $hat H_q$. We show that $psi$ commutes with these $B_3$ actions.

  2. A Matter Dominated Navigation Universe in Accordance with the Type Ia Supernova Data

    Institute of Scientific and Technical Information of China (English)

    李昕; 常哲; 李明华

    2012-01-01

    We investigate a matter dominated navigation cosmological model. The influence of a possible drift (wind) in the navigation cosmological model makes the spacetime geometry change from Riemannian to Finslerian. The evolution of the Finslerian Universe is governed by the same gravitational field equation with the familiar Friedmann-Robertson- Walker one. However, the change of space geometry from Riemannian to Finslerian supplies us a new relation between the luminosity distant and redshift. It is shown that the Hubble diagram based on this new relation could account for the observations on distant Type Ia supernovae.

  3. Bianchi type-II universe with wet dark fluid in general theory of relativity

    Science.gov (United States)

    Mahanta, Chandra Rekha; Sheikh, Azizur Rahman

    2017-09-01

    In this paper, dark energy models of the universe filled with wet dark fluid are constructed in the frame work of LRS Bianchi type-II space-time in General Theory of Relativity. A new equation of state modeled on the equation of state p = γ ( ρ - ρ_{*} ), which can describe liquid including water, is used. The exact solutions of Einstein's field equations are obtained in quadrature form and the models corresponding to the cases γ = 0 and γ = 1 are discussed in details.

  4. Seven types of nonsexual romantic physical affection among Brigham young university students.

    Science.gov (United States)

    Gulledge, Andrew K; Stahmann, Robert F; Wilson, Colwick M

    2004-10-01

    College students from Brigham Young University (N= 186; 68 men, 118 women, M age=22.7 yr., SD=3.5) completed a survey regarding nonsexual, romantic physical affection-defined as any touch intended to arouse feelings of love in the giver or the recipient. Respondents included both dating and married individuals, although this was not specified on the questionnaire. This descriptive study reports the mean, median, mode, and standard deviation for each of the seven physical affection types: backrubs/massages, caressing/stroking, cuddling/holding, holding hands, hugging, kissing on the face, and kissing on the lips. Grouped frequency distributions further describe the amounts of each type of physical affection. Although physical affection has been underrepresented in the literature, studies have shown it to be associated with relationship satisfaction, partner satisfaction, psychological intimacy, feeling understood, the development of attachment bonds, modulating cardiovascular arousal, and easier conflict resolution.

  5. A Study of the Types of Organizational Structure in Venezuelan University Institutes

    Directory of Open Access Journals (Sweden)

    Rafael Antonio Pertuz Belloso

    2013-12-01

    Full Text Available This study aimed at identifying the type of organizational structure of Venezuelan university institutes. It is a field investigation of a descriptive nature with a non-experimental transactional field design. We worked with a population sample consisting of a director, assistant directors, academic assistant directors and eighty-eight teachers from technological institutes in Cabimas and Maracaibo in Venezuela. A survey, in the form of a questionnaire, was used as the data collection technique, which included 24 items, validated by 5 experts, with Cronbach Alpha reliability of 0.93. The data analysis technique utilized was the percentage frequency distribution. The results indicated the coexistence of bureaucratic structural typologies; departmental and simple. An implementation of a structural migration strategy to the implementation of a matrix-type structure is recommended.

  6. Power-law expansion of the Universe from the bosonic Lorentzian type IIB matrix model

    Science.gov (United States)

    Ito, Yuta; Nishimura, Jun; Tsuchiya, Asato

    2015-11-01

    Recent studies on the Lorentzian version of the type IIB matrix model show that (3+1)D expanding universe emerges dynamically from (9+1)D space-time predicted by superstring theory. Here we study a bosonic matrix model obtained by omitting the fermionic matrices. With the adopted simplification and the usage of a large-scale parallel computer, we are able to perform Monte Carlo calculations with matrix size up to N = 512, which is twenty times larger than that used previously for the studies of the original model. When the matrix size is larger than some critical value N c ≃ 110, we find that (3+1)D expanding universe emerges dynamically with a clear large- N scaling property. Furthermore, the observed increase of the spatial extent with time t at sufficiently late times is consistent with a power-law behavior t 1/2, which is reminiscent of the expanding behavior of the Friedmann-Robertson-Walker universe in the radiation dominated era. We discuss possible implications of this result on the original supersymmetric model including fermionic matrices.

  7. Constraining anisotropy of the universe from different groups of type-Ia supernovae

    Energy Technology Data Exchange (ETDEWEB)

    Chang, Zhe; Li, Xin [Chinese Academy of Sciences, Institute of High Energy Physics, Beijing (China); Chinese Academy of Sciences, Theoretical Physics Center for Science Facilities, Beijing (China); Lin, Hai-Nan; Wang, Sai [Chinese Academy of Sciences, Institute of High Energy Physics, Beijing (China)

    2014-03-15

    Recently released Planck data and other astronomical observations show that the universe may be anisotropic on large scales. Inspired by this, anisotropic cosmological models have been proposed. We note that the Finsler-Randers spacetime provides an appropriate framework for the anisotropic cosmology. By adding an arbitrary 1-form to the Friedmann-Robertson-Walker line element, a privileged axis in the universe is picked out. The distance-redshift relation is modified to be direction-dependent. We wish that the anisotropic cosmological model may be tested crossly by independent observations. Type-Ia supernovae (SNe Ia) calibrated from four different light curve fitters are used to constrain the possible anisotropy of the universe. The magnitudes of anisotropy are all between 2-5 %, but the systematic uncertainty cannot be excluded. The directions of the privileged axis seem to differ from each other. The statistical significance is not high enough to make a convincing conclusion. Nevertheless, the 1σ contours in the (l,b) plane obtained from four groups of SNe Ia have an overlap, centering at (l,b) ∼ (170 , 0 ). Monte Carlo simulation shows that the anisotropy is unlikely to be caused by the selection effect. (orig.)

  8. Typing compared with handwriting for essay examinations at university: letting the students choose

    Directory of Open Access Journals (Sweden)

    Nora Mogey

    2010-12-01

    Full Text Available Students at the University of Edinburgh do almost all their work on computers, but at the end of the semester they are examined by handwritten essays. Intuitively it would be appealing to allow students the choice of handwriting or typing, but this raises a concern that perhaps this might not be ‘fair' – that the choice a student makes, to write or to type, will affect their mark. The aim of this study was to identify and explore any systematic differences that may be introduced due to offering students the choice to write or type essay examinations. A class of 70 first-year divinity students were given the option of taking a mock examination, and the further option of handwriting or typing their answer. All the examination scripts were then faithfully transcribed into the opposite format so there was a printed copy and a handwritten copy of every script. These were then marked by four markers, such that every marker marked every script exactly once, in one format or the other. No significant differences could be identified due to the format in which the students had written their answer. Factors explored included length of essay, overall score awarded, and some qualitative measures designed to indicate essay quality. In contrast, the variation between the markers was striking.

  9. PERSONIFICATION OF WAY OF LIFE TYPES OF YOUNG MEN AND WOMEN – GRADUATES OF THE UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Svetlana Tigranovna Dzhaneryan

    2015-12-01

    Full Text Available The article presents the results of a study aimed at research of the characteristics of personification as the substantive characteristic of each type of the way of life ideals (matrimonial, bohemian, health, career, community, social, social-protection, gnostic of young men and women – graduates of the university.Research methods: survey (questionnaire for study the way of life ideal, a content analysis of the open questions of the questionnaire, expert evaluation categories, methods of nonparametric statistics.Results. The article presents ideas about the way of life ideals, discloses its components and characteristics. In the article designated types of way of life ideals: matrimonial, bohemian, health, career, community, social-protection, gnostic. Established the features of personification of each type of boys and girl’s ideals (who are graduates of the university. The results show that all kinds of way of life ideals are personified; that there are attractive to young people personality traits of real people (or groups whose way of life influences on the construction of their own ideals of life. It is shown that the differentiation of male and female personification of ideals occurs on different parameters: for the ideals of «matrimonial life» and «career life» appears only in the parameter singularity / community; for the ideal of «social life» – in the parameters singularity / community, the psychological portrait, similarities; for the ideal of «health life» – in the parameters singularity / community, the psychological portrait, a means of implementing, similarities.Application of the results: psychological services in high schools and personnel services in different companies.

  10. Riemann's hypothesis and some infinite set of microscopic universes of the Einstein's type in the early period of the evolution of the Universe

    CERN Document Server

    Moser, Jan

    2013-01-01

    We obtain in this paper, as a consequence of the Riemann hypothesis, certain class of topological deformations of the graph of the function $|\\zf|$. These are used to construct an infinite set of microscopic universes (on the Planck's scale) of the Einstein type. Dedicated to the 90th anniversary of the A.E. Edington's book \\emph{The mathematical theory of relativity}.

  11. Universe

    CERN Document Server

    2011-01-01

    Updated for 2011, the Universe, is one book in the Britannica Illustrated Science Library Series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics-more than 1,000 per title-combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

  12. Universe

    CERN Document Server

    2009-01-01

    The Universe, is one book in the Britannica Illustrated Science Library Series that is correlated to the science curriculum in grades 5-8. The Britannica Illustrated Science Library is a visually compelling set that covers earth science, life science, and physical science in 16 volumes.  Created for ages 10 and up, each volume provides an overview on a subject and thoroughly explains it through detailed and powerful graphics-more than 1,000 per volume-that turn complex subjects into information that students can grasp.  Each volume contains a glossary with full definitions for vocabulary help and an index.

  13. A universal primer multiplex PCR method for typing of toxinogenic Pseudomonas aeruginosa.

    Science.gov (United States)

    Shi, Hui; Trinh, Quoclinh; Xu, Wentao; Zhai, Baiqiang; Luo, Yunbo; Huang, Kunlun

    2012-09-01

    Pseudomonas aeruginosa is a well-known opportunistic pathogen that can cause acute nosocomial necrotizing pneumonia and genetic disorder cystic fibrosis of lung patients. Pathogenic interactions between P. aeruginosa and hosts are often guided by the secreted virulence determinants that interact with specific host targets. Exotoxin A, pyocyanin, elastase, and type III secretion system are the most significant virulence determinants and cause great concern. However, P. aeruginosa in various environments has high genotypic diversity, leading to deficiency of exotoxin genes for some P. aeruginosa strains. In current study, a universal primer-multiplex PCR method (UP-MPCR) was employed for the detection of five significant enterotoxin genes (toxA, phzM, lasB, ExoU, and ExoS) and one internal control gene ecfX in P. aeruginosa. Owing to the application of universal primer (UP), different targeted products have identical amplified efficiency and the sensitivity of multiplex PCR is improved. In addition, the complexity of multiplex PCR system is reduced and the compatibility of primers in a reaction is greatly increased. This UP-MPCR method can detect the presence of five P. aeruginosa enterotoxin genes in a single assay more rapidly and sensitively than conventional methods. In 214 drinking water and environmental isolates, the ExoU, ExoS, phzM, toxA, and lasB genes were detected in 20 (9 %), 180 (84 %), 179 (84 %), 196 (92 %), and 171 (80 %) isolates, respectively.

  14. Bianchi type I anisotropic universe and stability interacting ghost dark energy in Brans-Dicke theories

    CERN Document Server

    Hossienkhani, Hossien

    2016-01-01

    A spatially homogeneous and anisotropic Bianchi type I universe has been studied with the ghost dark energy (GDE) in the framework of Brans-Dicke theory. For this purpose, we use the squared sound speed $v_s^2$ whose sign determines the stability of the model. At first, we obtain the equation of state parameter, $\\omega_\\Lambda$, the deceleration parameter $q$ and the evolution equation of the ghost dark energy. Then, we extend our study to the case of ghost dark energy in a non-isotropic and Brans-Dicke framework and find out that the transition of $\\omega_\\Lambda$ to the phantom regime can be more easily accounted for than when it is restored into the Einstein field equations. Our numerical result show the effects of the interaction and anisotropic on the evolutionary behaviour the ghost dark energy models. In conclusion, we find evidence that the ghost dark energy in BD theory can lead to a stable universe favored by observations at the present time.

  15. A New Current Mode SIMO-Type Universal Biquad Employing Multi-Output Current Conveyors (MOCCIIs

    Directory of Open Access Journals (Sweden)

    S. Du

    2009-04-01

    Full Text Available This study presents a new current-mode singleinput and multi-output (SIMO type universal biquad circuit using second generation multi-output current conveyors (MOCCII as the active components. The proposed circuit employs three MOCCIIs, two grounded capacitors and four grounded resistors, therefore offers electroning tuning possibilities. It can simultaneously realize second order low-pass, band-pass, high-pass, notch and all-pass filters. The circuit is cascadable and has low sensitivities. It provides independent control of ω0 (natural angular frequency and Q (quality factor. The influences of MOCCII parasitic elements have been analyzed and simulated using PSPICE. Experimental results including frequency responses of low-pass, high-pass, band-pass and band-stop filters, as well as frequency responses of filters with different ω0 (keeping Q invariable and different Q (keeping ω0 invariable are shown to be in agreement with theory.

  16. Principles and experimentation of wrist prostheses of the universal joint type.

    Science.gov (United States)

    Kapandji, I A

    1982-01-01

    The till now wrist prosthesis have a poor rotatory stability either they are flexible or rigid; specially the spheric ones, they are unable, from their very conception, to transmit the pronation-supination; the condylar ones have an incomplete stability because of their insufficient embedding. The prono-supination transmission needs a "universal joint" prosthesis, whose sellar surfaces are deeply embedded; so, it is possible to get in the same time firm stability and normal ranges of motion. The articular components, crescent roll shaped, are chained each other in perpendicularly plans and fixed in the radius and in the carpus-metacarpus. This is the mono-articular prosthesis, radio-carpal, type A. With an ulna piece, articulated with the radial one by a spherical pivot, we have a bi-articular prosthesis, type B, including the lower radio-ulnar joint: so we have the true total wrist prosthesis. Experimented on cadaveric specimens, these two prostheses, inserted by dorsal approach, have physiologic ranges of motion and absolute rotatory stability. Further studies may define the best dimensions of the prosthesis according to individual variations and ancillary tools set, before beginning the clinical experimentation.

  17. A Study of the Relationship between Type of Organizational Structure of University and Departmental Social Capital with Students\\\\\\' Academic Satisfaction at Shiraz University

    Directory of Open Access Journals (Sweden)

    jafar torkzadeh

    2014-04-01

    Finally we can say that, although in this study it was concluded that organizational structure varieties and social capital alone have significant predictive power for students’ academic satisfaction, reduction of the predictive power of organizational structure types and social capital coincide with one another, which is an evidence of the obvious impact of the organizational structure quality, especially the enabling organizational structure, on the nature and quality of departments’ social capital and vice versa. Hence, with regard to the serious responsibility of universities and university departments for achieving educational and research goals, it is worthwhile that managers and educational practitioners change the conditions and atmosphere of the university in such a way that it could be as a ground to promote students’ academic satisfaction.

  18. Outbreak of OXA-48-Producing Klebsiella pneumoniae Involving a Sequence Type 101 Clone in Batna University Hospital, Algeria.

    Science.gov (United States)

    Loucif, Lotfi; Kassah-Laouar, Ahmed; Saidi, Mahdia; Messala, Amina; Chelaghma, Widad; Rolain, Jean-Marc

    2016-12-01

    Seven nonredundant ertapenem-resistant Klebsiella pneumoniae isolates were collected between May 2014 and 19 January 2015 in the nephrology and hematology units of Batna University Hospital in Algeria. All strains coproduced the blaOXA-48, blaCTX-M-15, blaSHV-1, and blaTEM-1D genes. Six of these isolates belonged to the pandemic clone sequence type 101 (ST101). The blaOXA-48 gene was located on a conjugative IncL/M-type plasmid. This is the first known outbreak of OXA-48-producing K. pneumoniae isolates involving an ST101 clone in Batna University Hospital.

  19. Energy–momentum localization for Bianchi type-IV Universe in general relativity and teleparallel gravity

    Indian Academy of Sciences (India)

    Sezgin Aygün; İsmail Tarhan

    2012-04-01

    In this study we have investigated the energy–momentum distributions for homogeneous and anisotropic Bianchi type-IV in B class Universe. For this purpose, we have used energy–momentum complexes of Einstein, Bergmann–Thomson, Landau–Lifshitz (LL), Papapetrou, Tolman and Møller in general relativity (GR) as also Einstein, Bergmann–Thomson, Landau–Lifshitz and Møller in teleparallel gravity (TG). From the obtained results we have found that Einstein and Bergmann–Thomson distributions are exactly giving the same results in GR and TG but the Landau–Lifshitz, Papapetrou Tolman and Møller energy–momentum distributions do not provide the same results with Einstein and Bergmann–Thomson in GR and TG. Furthermore, Einstein, Bergmann–Thomson and LL results are the same in different gravitation theories and we get that both GR and TG are equivalent theories for these prescriptions. From the obtained solutions, we could say that these are equivalent theories. Also, Møller energy–momentum distributions do not give the same results in GR and TG. However, we have found that all energy prescriptions are negative and our results agree with Nester et al.

  20. Determining the torus covering factors for a sample of type 1 AGN in the local Universe

    CERN Document Server

    Ezhikode, Savithri H; Done, Chris; Ward, Martin; Dewangan, Gulab C; Misra, Ranjeev; Philip, Ninan Sajeeth

    2016-01-01

    The unification scheme of active galactic nuclei (AGN) proposes the presence of a dusty torus around the central source, governing the differences between AGN spectral properties. A fraction of the AGN luminosity is absorbed by the dusty torus and is re-radiated in the infrared (IR) band. Thus the fraction of the sky covered by the torus as seen from the central source, known as the covering factor f_c, can be obtained from the ratio of the IR to the bolometric luminosities of the source. However, because of the uncertainty in determining bolometric luminosities, the estimation of covering factors has proven difficult, especially in the local Universe where the peak of the observed spectral energy distributions (SEDs) lie in the ultraviolet. In this work, we determine the covering factors of an X-ray/optically selected sample of 51 type 1 AGN analysed by Jin et al. The bolometric luminosities of these sources can be derived using a self-consistent, energy-conserving model that estimates the contribution in th...

  1. Spin S = 1 centers: a universal type of paramagnetic defects in nanodiamonds of dynamic synthesis

    Science.gov (United States)

    Shames, A. I.; Osipov, V. Yu; von Bardeleben, H. J.; Vul', A. Ya

    2012-06-01

    Intrinsic paramagnetic defects in ˜5 nm sized nanodiamonds, produced by various dynamic synthesis (DySND) techniques (detonation, shock-wave, pulsed laser ablation of solid carbon containing targets), have been studied by multi-frequency electron paramagnetic resonance (EPR). X-band (9-10 GHz) EPR spectra of DySND, in addition to the main intensive singlet Lorentzian-like EPR signal, reveal a low intensity doublet pattern within the half-field (HF) region (g ˜ 4). On transferring spectra to the Q-band (34 GHz) the shape of the HF pattern changes and splitting between doublet components is reduced from 10.4 to 2.6 mT. The HF patterns observed are attributed to the ‘forbidden’ ΔMS = 2 transitions between the Zeeman levels of some spin-triplet (S = 1) centers. The model of two triplet centers with g ˜ 2.003 and zero-field splitting parameters D1 = 0.095 cm-1 (TR1) and D2 = 0.030 cm-1 (TR2) satisfactorily describes experimental results at both microwave frequencies. The spin-triplet-type defects are observed in a wide variety of DySND samples irrespective of industrial supplier, cooling and carbon soot refinement methods, initial purity, disintegration, or subsequent targeted chemical modification. This indicates that the intrinsic defects with S = 1 in DySND systems are of universal origin.

  2. Investigation of science production in Iran’s type I universities of medical sciences, a 6-year assessment

    Directory of Open Access Journals (Sweden)

    M Yadollahi

    2014-07-01

    Full Text Available Introduction: Science production is one of the main dimensions of sustainable development in any country. Thus, universities as the major centers for science production play a key role in development. The present study aimed to assess the trend of science production in Iran’s type I universities of medical sciences from 2007 to 2012. Method: In this study, the universities’ scores of empowering, governance and leadership, science production, student researches, and number of published articles were computed based on the evaluations of universities of medical sciences by the Ministry of Health, Treatment, and Medical Education from 2007 to 2012. Then, the data were analyzed using descriptive statistics and the figures were drawn by Excel software. Results: This study assessed science production in Iran’s type I universities of medical sciences and analyzed each university’s proportion in publication of articles. According to the results, most of the published articles were affiliated to Tehran University of Medical Sciences. However, considering the role of number of faculty members, different results were obtained. With respect to the evaluation raw scores, Isfahan University of Medical Sciences showed a considerable reduction of scores in 2012, while other universities had a constant or ascending trend. Besides, indexed articles followed an ascending trend in all the universities and most of the articles had been published in index 1. Conclusion: Similar to other studies, the findings of this study revealed an increase in science productions in Iran through the recent years. Yet, the highest scores of the studied indexes, except for student researches, were related to Tehran University of Medical Sciences. This great difference between this university and other universities might be due to accumulation of specific potentials and forces in this region. Overall, science productions followed an ascending trend in all type I universities of

  3. Creative Thinking of University Teachers in the Age of Intellectual Capital: Is It Affected by Personality Types and Traits?

    Science.gov (United States)

    AlFuqaha, Isam Najib; Tobasi, Adnan

    2015-01-01

    This article attempts to probe the level of creative thinking of teachers at Philadelphia University in Jordan, and to define its relation with several independent demographic variables, namely age, gender, duration of experience, specialization, and personality types and traits. To accomplish this purpose, three questionnaires are administered on…

  4. Incremental Validity of the Myers-Briggs Type Indicator in Predicting Academic Major Selection of Undecided University Students

    Science.gov (United States)

    Pulver, Chad A.; Kelly, Kevin R.

    2008-01-01

    This study examined the incremental validity of the Myers-Briggs Type Indicator (MBTI) as a predictor of academic major choice. Undecided university students were administered the MBTI and Strong Interest Inventory (SII). Their academic major choice was recorded at the end of their fourth semester and categorized as realistic, investigative,…

  5. Forming Realistic Late-type Spirals in a ΛCDM Universe: The Eris Simulation

    Science.gov (United States)

    Guedes, Javiera; Callegari, Simone; Madau, Piero; Mayer, Lucio

    2011-12-01

    Simulations of the formation of late-type spiral galaxies in a cold dark matter (ΛCDM) universe have traditionally failed to yield realistic candidates. Here we report a new cosmological N-body/smooth particle hydrodynamic simulation of extreme dynamic range in which a close analog of a Milky Way disk galaxy arises naturally. Named "Eris," the simulation follows the assembly of a galaxy halo of mass M vir = 7.9 × 1011 M ⊙ with a total of N = 18.6 million particles (gas + dark matter + stars) within the final virial radius, and a force resolution of 120 pc. It includes radiative cooling, heating from a cosmic UV field and supernova explosions (blastwave feedback), a star formation recipe based on a high gas density threshold (n SF = 5 atoms cm-3 rather than the canonical n SF = 0.1 atoms cm-3), and neglects any feedback from an active galactic nucleus. Artificial images are generated to correctly compare simulations with observations. At the present epoch, the simulated galaxy has an extended rotationally supported disk with a radial scale length Rd = 2.5 kpc, a gently falling rotation curve with circular velocity at 2.2 disk scale lengths of V 2.2 = 214 km s-1, an i-band bulge-to-disk ratio B/D = 0.35, and a baryonic mass fraction within the virial radius that is 30% below the cosmic value. The disk is thin, has a typical H I-to-stellar mass ratio, is forming stars in the region of the ΣSFR-ΣH I plane occupied by spiral galaxies, and falls on the photometric Tully-Fisher and the stellar-mass-halo-virial-mass relations. Hot (T > 3 × 105 K) X-ray luminous halo gas makes up only 26% of the universal baryon fraction and follows a "flattened" density profile vpropr -1.13 out to r = 100 kpc. Eris appears then to be the first cosmological hydrodynamic simulation in which the galaxy structural properties, the mass budget in the various components, and the scaling relations between mass and luminosity are all consistent with a host of observational constraints. A

  6. FORMING REALISTIC LATE-TYPE SPIRALS IN A {Lambda}CDM UNIVERSE: THE ERIS SIMULATION

    Energy Technology Data Exchange (ETDEWEB)

    Guedes, Javiera; Madau, Piero [Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States); Callegari, Simone [Institute for Theoretical Physics, University of Zuerich, Winterthurerstrasse 190, CH-9057 Zuerich (Switzerland); Mayer, Lucio [Institute for Astronomy, ETH Zuerich, Wolgang-Pauli-Strasse 27, 8093 Zuerich (Switzerland)

    2011-12-01

    Simulations of the formation of late-type spiral galaxies in a cold dark matter ({Lambda}CDM) universe have traditionally failed to yield realistic candidates. Here we report a new cosmological N-body/smooth particle hydrodynamic simulation of extreme dynamic range in which a close analog of a Milky Way disk galaxy arises naturally. Named 'Eris', the simulation follows the assembly of a galaxy halo of mass M{sub vir} = 7.9 Multiplication-Sign 10{sup 11} M{sub Sun} with a total of N = 18.6 million particles (gas + dark matter + stars) within the final virial radius, and a force resolution of 120 pc. It includes radiative cooling, heating from a cosmic UV field and supernova explosions (blastwave feedback), a star formation recipe based on a high gas density threshold (n{sub SF} = 5 atoms cm{sup -3} rather than the canonical n{sub SF} = 0.1 atoms cm{sup -3}), and neglects any feedback from an active galactic nucleus. Artificial images are generated to correctly compare simulations with observations. At the present epoch, the simulated galaxy has an extended rotationally supported disk with a radial scale length R{sub d} = 2.5 kpc, a gently falling rotation curve with circular velocity at 2.2 disk scale lengths of V{sub 2.2} = 214 km s{sup -1}, an i-band bulge-to-disk ratio B/D = 0.35, and a baryonic mass fraction within the virial radius that is 30% below the cosmic value. The disk is thin, has a typical H I-to-stellar mass ratio, is forming stars in the region of the {Sigma}{sub SFR}-{Sigma}{sub HI} plane occupied by spiral galaxies, and falls on the photometric Tully-Fisher and the stellar-mass-halo-virial-mass relations. Hot (T > 3 Multiplication-Sign 10{sup 5} K) X-ray luminous halo gas makes up only 26% of the universal baryon fraction and follows a 'flattened' density profile {proportional_to}r{sup -1.13} out to r = 100 kpc. Eris appears then to be the first cosmological hydrodynamic simulation in which the galaxy structural properties, the

  7. Types of Glaucoma in a University Health Centre in Al‑Ahsa, Saudi ...

    African Journals Online (AJOL)

    College of Medicine, King Faisal University, 1Department of Ophthalmology, ... effective intervention in terms of training and other .... The main determinants of glaucomas are IOP, disc ... medical therapy remains the treatment of choice for.

  8. Bianchi type I Universe and interacting ghost scalar fields models of dark energy

    Science.gov (United States)

    Hossienkhani, H.

    2016-04-01

    We suggest a correspondence between interacting ghost dark energy model with the quintessence, tachyon and K-essence scalar field in a non-isotropic universe. This correspondence allows to reconstruct the potential and the dynamics for the scalar field of the interacting ghost dark energy model, which describe accelerated expansion of the universe. Our numerical result show the effects of the interaction and anisotropic on the evolutionary behavior the ghost scalar field models.

  9. University studies science course selection and academic achievement in relation to the Myers-Briggs Type Indicator

    Science.gov (United States)

    Skauge, Suzanne Elizabeth

    This research conducted at a southern regional university studied general education (University Studies - US) science course selection and academic success in US science in relation to Myers-Briggs Type Indicator (MBTI) preference categories (SF, ST, NF and NT). Additionally, differences in type preferences among students with mathematics and/or reading competency were explored. Data was examined for 755 students enrolled in the freshman success seminar course between Fall 1989 and Spring 1995 who had completed the MBTI test as part of that class. US science courses examined were grouped by science study: earth science, biology, chemistry and physics. Academic success was defined as a grade of "C" or higher and proficiency criteria were dictated by the university catalog. The study's nonparametric test results did not find any significant differences between MBTI type preferences and the two main areas of focus, US science course selection and academic success in US science courses. However, significant proportional differences were found between type preferences in relation to student reading competency (sig. = .03), as well as, reading competency and academic success in science (sig. = .04) even though fairly weak relationships existed between the variables with contingency coefficients of .11 and .10 respectively. All other relationships tested proved not significant. Each type's course selection closely reflected the overall sample: Earth Science 52.3%, Biology 34%, Chemistry 7.5% and Physics 6.1%. Nearly one-fifth (19.7%) of the sample were not successful in their selected science course. Less than two-fifths (37.7%) of student sample were not mathematics and/or reading competent. Academically in science intuitive types tended to do better than sensing types and feeling types tended to better than thinking types (NF 2.41, NT 2.36, SF 2.29 and ST 2.23). Further analysis found the TF preference scale contributed more toward the significant differences in reading

  10. Virtual Reference at a Global University: An Analysis of Patron and Question Type

    Science.gov (United States)

    Rawson, Joseph; Davis, Megan A.; Harding, Julie; Miller, Clare

    2013-01-01

    This paper covers material presented at the 15th Annual Off-Campus conference (formerly known as the Off Campus Library Services Conference) in Memphis, Tennessee. During the course of this presentation, participants learned how both chat and instant messaging reference are being conducted and evaluated at a major online learning university. This…

  11. Are family factors universally related to metabolic outcomes in adolescents with Type 1 diabetes?

    NARCIS (Netherlands)

    Cameron, F. J.; Skinner, T. C.; de Beaufort, C. E.; Hoey, H.; Swift, P. G. F.; Aanstoot, H.; Aman, J.; Martul, P.; Chiarelli, F.; Daneman, D.; Danne, T.; Dorchy, H.; Kaprio, E. A.; Kaufman, F.; Kocova, M.; Mortensen, H. B.; Njolstad, P. R.; Phillip, M.; Robertson, K. J.; Schoenle, E. J.; Urakami, T.; Vanelli, M.; Ackermann, R. W.; Skovlund, S. E.

    2008-01-01

    Aims To assess the importance of family factors in determining metabolic outcomes in adolescents with Type 1 diabetes in 19 countries. Methods Adolescents with Type 1 diabetes aged 11-18 years, from 21 paediatric diabetes care centres, in 19 countries, and their parents were invited to participate.

  12. Topics in quantum groups and finite-type invariants mathematics at the independent University of Moscow

    CERN Document Server

    Arkhipov, S M; Odesskii, A V; Feigin, B; Vassiliev, V

    1998-01-01

    This volume presents the first collection of articles consisting entirely of work by faculty and students of the Higher Mathematics College of the Independent University of Moscow (IUM). This unique institution was established to train elite students to become research scientists. Covered in the book are two main topics: quantum groups and low-dimensional topology. The articles were written by participants of the Feigin and Vassiliev seminars, two of the most active seminars at the IUM.

  13. Catalogue of type specimens of fungi and lichens deposited in the Herbarium of the University of Granada (Spain).

    Science.gov (United States)

    Vizoso, M Teresa; Quesada, Carmen

    2015-01-01

    A catalogue of types from the Herbarium of the University of Granada has not previously been compiled. As a result, a search of these collections in order to compile digital images for preservation and publication yielded a large number of formerly unrecognized types. This dataset contains the specimen records from the catalogue of the nomenclature types of fungi and lichens in the Herbarium of the University of Granada, Spain. These herbarium specimens are included in the GDA and GDAC collections, acronyms from Index Herbariorum (Thiers 2014). At this time, the type collection of fungi and lichens contains 88 type specimens of 49 nominal taxa, most from Agaricales and the genus Cortinarius, described from the western Mediterranean, mainly Spain, by the following authors: V.Antonin, J.Ballarà, A.Bidaud, G.F.Bills, M.Bon, C.Cano, M.Casares, G.Chevassut, M.Contu, F.Esteve-Raventós, R.Galán, L.Guzmán-Dávalos, R.Henry, E.Horak, R.Mahiques, G.Malençon, P.Moënne-Loccoz, G.Moreno, A.Ortega, F.Palazón, V.N.Suárez.-Santiago, A.Vêzda, J.Vila, and M.Villareal. For each specimen, the locality indication, species name, observation date, collector, type status, related information, associated sequences, other catalogue numbers related to each type, and image URL are recorded. The dataset is associated with an image collection named "Colección de imágenes de los tipos nomenclaturales de hongos, líquenes, musgos y algas incluidos en el Herbario de la Universidad de Granada (GDA y GDAC)" (Vizoso and Quesada 2013) which is housed and accessible at the Global Biodiversity Information Facility in Spain (GBIF.ES) Hosting and Publishing Service "Biodiversity Image Portal of Spanish collections" and is also available at the Herbarium of University of Granada institutional web (Vizoso 2014a, Vizoso 2014b). That image collection contains 113 images, of which 56 correspond to the nomenclature types of 49 taxa (47 fungi, 2 lichens), the rest of the images in this collection

  14. Catalogue of type specimens of molluscs in the collection of The Manchester Museum, The University of Manchester, UK

    Directory of Open Access Journals (Sweden)

    Henry McGhie

    2008-12-01

    Full Text Available This paper presents the first published listing of the holdings of type specimens of mollusc in The Manchester Museum (University of Manchester, UK, the fourth largest mollusc collection in Britain. Type material relating to 480 taxa are included in the present catalogue, mainly coming from the collections of A Abercrombie (India, RD Darbishire, Prof. AC Haddon (Torres Straits, Rev. J Hadfield (Lifu, Loyalty Islands, LJ Shackleford (especially Marginella, GC Spence (especially African land snails and Urocoptis and many specimens from M Connolly and HB Preston, FW Townsend (Persian Gulf, syntype material from the Scottish National Antarctic Expedition (1902-1904 and that received from the Smithsonian Institution in 1973 in exchange. There is undoubtedly more type material within the collection which is not identified as such as yet.

  15. LRS Bianchi Type-V Viscous Fluid Universe With a Time Dependent Cosmological Term $\\Lambda$

    CERN Document Server

    Pradhan, Anirudh; Singh, C V

    2007-01-01

    An LRS Bianchi type-V cosmological models representing a viscous fluid distribution with a time dependent cosmological term $\\Lambda$ is investigated. To get a determinate solution, the viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density. It turns out that the cosmological term $\\Lambda(t)$ is a decreasing function of time, which is consistent with recent observations of type Ia supernovae. Various physical and kinematic features of these models have also been explored.

  16. Energy distributions of Bianchi type-VI h Universe in general relativity and teleparallel gravity

    Science.gov (United States)

    Özkurt, Şeref; Aygün, Sezg&idot; n.

    2017-04-01

    In this paper, we have investigated the energy and momentum density distributions for the inhomogeneous generalizations of homogeneous Bianchi type-VI h metric with Einstein, Bergmann-Thomson, Landau-Lifshitz, Papapetrou, Tolman and Møller prescriptions in general relativity (GR) and teleparallel gravity (TG). We have found exactly the same results for Einstein, Bergmann-Thomson and Landau-Lifshitz energy-momentum distributions in Bianchi type-VI h metric for different gravitation theories. The energy-momentum distributions of the Bianchi type- VI h metric are found to be zero for h = -1 in GR and TG. However, our results agree with Tripathy et al, Tryon, Rosen and Aygün et al.

  17. Energy distributions of Bianchi type-$VI_{h}$ Universe in general relativity and teleparallel gravity

    Indian Academy of Sciences (India)

    SEREF ÖZKURT; SEZGIN AYGÜN

    2017-04-01

    In this paper, we have investigated the energy and momentum density distributions for the inhomogeneous generalizations of homogeneous Bianchi type-$VI_{h}$ metric with Einstein, Bergmann–Thomson, Landau–Lifshitz,Papapetrou, Tolman and M$\\phi$ller prescriptions in general relativity (GR) and teleparallel gravity (TG). We have found exactly the same results for Einstein, Bergmann–Thomson and Landau–Lifshitz energy–momentum distributions in Bianchi type-$VI_{h}$ metric for different gravitation theories. The energy–momentum distributions of the Bianchi type-$VI_{h}$ metric are found to be zero for $h$ = −1 in GR and TG. However, our results agree with Tripathy et al, Tryon, Rosen and Aygün et al.

  18. A catalogue of the Chrysididae (Insecta, Hymenoptera) types deposited in the Zoological Museum, Moscow Lomonosov State University, Russia.

    Science.gov (United States)

    Rosa, Paolo; Antropov, Alexander V; Xu, Zaifu

    2015-07-23

    A critical and annotated catalogue of 52 types of Chrysididae belonging to 32 species deposited in the Zoological Museum of Moscow Lomonosov State University is given. The lectotypes of Chrysis sabulosa Radoszkowski, 1877 and Ellampus (Philoctetes) fedtschenkoi Semenov, 1932 are designated. New synonyms are proposed for (valid name first): Omalus imbecillus (Mocsáry, 1889) = Ellampus kozhevnikovi Semenov, 1932, syn. nov., and Chrysis speciosa Radoszkowski, 1877 = C. fulvicornis Mocsáry, 1889, syn. nov. The status of Hedychridium erschovi (Radoszkowski, 1877), stat. resurr. is revalidated.

  19. Inhomogeneous generalizations of Bianchi Type VIh universes with stiff perfect fluid and radiation

    Science.gov (United States)

    Roy, S. R.; Prasad, A.

    1995-03-01

    Families of inhomogeneous models filled with a stiff perfect fluid and radiation have been derived in which there is no flow of total momentum. The models are generalizations of those of Bianchi Type VIh and are discussed for some particular forms of the arbitrary functions appearing in them.

  20. An extensive catalogue of early-type galaxies in the nearby universe

    CERN Document Server

    Dabringhausen, J

    2016-01-01

    We present a catalogue of 1715 early-type galaxies from the literature, spanning the luminosity range from faint dwarf spheroidal galaxies to giant elliptical galaxies. The aim of this catalogue is to be one of the most comprehensive and publicly available collections of data on early-type galaxies. The emphasis in this catalogue lies on dwarf elliptical galaxies, for which some samples with detailed data have been published recently. For almost all of the early-type galaxies included in it, this catalogue contains data on their locations, distances, redshifts, half-light radii, the masses of their stellar populations and apparent magnitudes in various passbands. Data on metallicity and various colours are available for a majority of the galaxies presented here, including many of the rather faint early-type galaxies in the Local group. The data on magnitudes, colours, metallicities and masses of the stellar populations is supplemented with entries that are based on fits to data from simple stellar population ...

  1. Institutional Types, Organizational Cultures, and Innovation in Christian Colleges and Universities

    Science.gov (United States)

    Obenchain, Alice M.; Johnson, William C.; Dion, Paul A.

    2004-01-01

    Relative to the many types of higher education institutions, Christian institutions face extreme operating conditions. Specifically, they are highly tuition dependent, face extreme pressure for funding, and struggle to preserve the history, tradition, and distinctive cultures of their organizations (Dockery and Gushee, 1999). At the same time,…

  2. USING BAYESIAN NETWORKS TO UNDERSTAND RELATIONSHIPS AMONG MATH ANXIETY, GENDERS, PERSONALITY TYPES, AND STUDY HABITS AT A UNIVERSITY IN JORDAN

    Directory of Open Access Journals (Sweden)

    Linda Smail

    2016-12-01

    Full Text Available Mathematics is the foundation of all sciences, but most students have problems learning math. Although students’ success in life related to their success in learning, many would not take a math course unless it is their university’s core requirements. Multiple reasons exist for students’ poor performance in mathematics, but one prevalent variable worth consideration is the personality type. This work seeks to uncover relationships, if any, between students’ math anxiety and the students’ learning type in learning math and preparing for exams and tests. We use Bayesian networks to link those different variables and detect possible relationships among these variables. The data was obtained from population of 468 students during spring in 2009 at a U.S. institution in Jordan. Not many researches have been performed in the area of math study and personality types so we undertook this study to add to this area of knowledge. The study reveals that math anxiety related to gender, personality type, and study habits among this group of university students. Keywords: Mathematics Anxiety, MBTI, Personality Types, Bayesian Networks DOI: http://dx.doi.org/10.22342/jme.8.1.3405.17-34

  3. Fabrication of universal serial bus flash disk type microfluidic chip electrophoresis and application for protein analysis under ultra low voltage.

    Science.gov (United States)

    Cong, Hailin; Xu, Xiaodan; Yu, Bing; Liu, Huwei; Yuan, Hua

    2016-03-01

    A simple and effective universal serial bus (USB) flash disk type microfluidic chip electrophoresis (MCE) was developed by using poly(dimethylsiloxane) based soft lithography and dry film based printed circuit board etching techniques in this paper. The MCE had a microchannel diameter of 375 μm and an effective length of 25 mm. Equipped with a conventional online electrochemical detector, the device enabled effectively separation of bovine serum albumin, lysozyme, and cytochrome c in 80 s under the ultra low voltage from a computer USB interface. Compared with traditional capillary electrophoresis, the USB flash disk type MCE is not only portable and inexpensive but also fast with high separation efficiency.

  4. Are family factors universally related to metabolic outcomes in adolescents with Type 1 diabetes?

    DEFF Research Database (Denmark)

    Cameron, F.J.; Skinner, T.C.; Beaufort, C.E. de

    2008-01-01

    . Conclusions Family factors, particularly dynamic and communication factors such as parental over-involvement and adolescent-parent concordance on responsibility for diabetes care appear be important determinants of metabolic outcomes in adolescents with diabetes. However, family dynamic factors do not account......Aims To assess the importance of family factors in determining metabolic outcomes in adolescents with Type 1 diabetes in 19 countries. Methods Adolescents with Type 1 diabetes aged 11-18 years, from 21 paediatric diabetes care centres, in 19 countries, and their parents were invited to participate....... Questionnaires were administered recording demographic data, details of insulin regimens, severe hypoglycaemic events and number of episodes of diabetic ketoacidosis. Adolescents completed the parental involvement scale from the Diabetes Quality of Life for Youth-Short Form (DQOLY-SF) and the Diabetes Family...

  5. G\\"odel and G\\"odel-type universes in Brans-Dicke theory

    CERN Document Server

    Agudelo, J A; Petrov, A Yu; Porfírio, P J; Santos, A F

    2016-01-01

    In this paper, conditions for existence of G\\"{o}del and G\\"{o}del-type solutions in Brans-Dicke (BD) scalar-tensor theory and their main features are studied. The special attention is paid to consistency of equations of motion, causality, existence of CTCs (closed time-like curves) and to the role which cosmological constant and Mach principle play to achieve the consistency of this model.

  6. PREVALENCE AND TYPES OF SPORTS INJURIES PRESENTING TO EMERGENCY DEPARTMENT SUEZ CANAL UNIVERSITY HOSPITAL

    Directory of Open Access Journals (Sweden)

    Adel Hamed Elbaih

    2016-10-01

    Full Text Available Inroduction: regular physical activity is essential for the prevention of various diseases and reduces the risk of premature mortality in general and coronary heart disease, hypertension, colon cancer, obesity and diabetes mellitus in particular. Aim of this study was to assess the most common sports causing injuries and to assess the types and mechanisms of these injuries. Patients and methods: The researcher examined 250 patients attending emergency departmentl. Results: The study showed that the most common type of sports involved in injury was football .The ankle was the most common affected part in the whole body . Chest contusion and back contusion were the most common types of sports injuries in head, neck and trunk. Fracture scaphoid and fissure radius were the most common sport injuries. Ankle sprain was the most common injury. The study showed that (62.7% of the studied patients who were playing football had injuries in the lower limbs. Ankle sprain was the most common sport injury that was associated with wearing football shoes . Conclusion: Ankle sprain was the most common sport injury associated with artificial grass court . Wrist sprain was the common sport injury in the upper limbs associated with artificial grass court .

  7. New Universal Tribometer as Pin or Ball-on-Disc and Reciprocating Pin-on-Plate Types

    Directory of Open Access Journals (Sweden)

    H. Kaleli

    2016-06-01

    Full Text Available The present paper contains a description of a new Universal Tribometer design which enables simulation of different contact and test types such as pin-on-disc, ball-on-disc and linear reciprocating tests. There are many models of wear Tribometer in the world market. These devices are manufactured by various companies abroad and are imported to our country. Cost of this devices start from 50.000 euros and goes to hundreds of thousands of euros. One of the most commonly used of this device is Reciprocating Pin-on-Plate Tribo Test Machine. This wear tester is produced at a low limited cost within the KAP (Scientifical Research Project Coordinator of Yıldız Technical University. The test machine can work including three types of Tribotest rigs (Reciprocating Pin-on-Plate, Pin-on-Disc and Ball-on-Disc. It is designed to operate also at high temperatures up to 500 ˚C. The new piece of equipment allows instrumented tribological testing of piston ring and cylinder liner samples at low and high temperatures and boundary lubrication conditions of any typical gasoline or Diesel engines. Some friction results were shown in boundary lubricating conditions between piston ring and cylinder liner sliding pairs describing Tribotest machine is driven by AC servo motor which is more accurate than DC motor.

  8. Revealing a universal planet-metallicity correlation for planets of different solar-type stars

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Ji; Fischer, Debra A., E-mail: ji.wang@yale.edu [Department of Astronomy, Yale University, New Haven, CT 06511 (United States)

    2015-01-01

    The metallicity of exoplanet systems serves as a critical diagnostic of planet formation mechanisms. Previous studies have demonstrated the planet–metallicity correlation for large planets (R{sub P} ⩾ 4 R{sub E}); however, a correlation has not been found for smaller planets. With a sample of 406 Kepler objects of interest whose stellar properties are determined spectroscopically, we reveal a universal planet–metallicity correlation: not only gas-giant planets (3.9 R{sub E}

  9. Child Maltreatment; Types and effects: Series of six cases from a university hospital in Oman

    Directory of Open Access Journals (Sweden)

    Muna Al-Saadoon

    2012-02-01

    Full Text Available Child maltreatment (CM is common worldwide, and can take many forms. It may even endanger the child’s life, especially when younger children are the victims. CM affects the child’s quality of life and consequently leads to long term issues to be dealt with by the child, family and community. This case series discusses six children who have been subjected to CM, and diagnosed by the child protection team of the departments of Child Health and Behavioural Medicine at Sultan Qaboos University Hospital (SQUH, Oman. The aim of this case series is to increase the level of awareness of CM among Oman’s medical professionals and to highlight the difficulties encountered in diagnosing and providing optimal care for these children. Although treatment is provided in Oman’s health care system, it is clear that there are gaps in the existing system which affect the quality of child protection services provided to the children and their families.

  10. Classification review of dental adhesive systems: from the IV generation to the universal type.

    Science.gov (United States)

    Sofan, Eshrak; Sofan, Afrah; Palaia, Gaspare; Tenore, Gianluca; Romeo, Umberto; Migliau, Guido

    2017-01-01

    Adhesive dentistry has undergone great progress in the last decades. In light of minimal-invasive dentistry, this new approach promotes a more conservative cavity design, which relies on the effectiveness of current enamel-dentine adhesives. Adhesive dentistry began in 1955 by Buonocore on the benefits of acid etching. With changing technologies, dental adhesives have evolved from no-etch to total-etch (4(th) and 5(th) generation) to self-etch (6(th), 7(th) and 8(th) generation) systems. Currently, bonding to dental substrates is based on three different strategies: 1) etch-and-rinse, 2) self-etch and 3) resin-modified glass-ionomer approach as possessing the unique properties of self-adherence to the tooth tissue. More recently, a new family of dentin adhesives has been introduced (universal or multi-mode adhesives), which may be used either as etch-and-rinse or as self-etch adhesives. The purpose of this article is to review the literature on the current knowledge for each adhesive system according to their classification that have been advocated by many authorities in most operative/restorative procedures. As noted by several valuable studies that have contributed to understanding of bonding to various substrates helps clinicians to choose the appropriate dentin bonding agents for optimal clinical outcomes.

  11. Fast-type high-accuracy universal polarimeter using charge-coupled device spectrometer

    Directory of Open Access Journals (Sweden)

    Akifumi Takanabe

    2017-02-01

    Full Text Available A fast, high-accuracy universal polarimeter was developed using a charge-coupled device (CCD spectrometer (CCD-HAUP, to carry out simultaneous optical anisotropic (linear birefringence, LB; linear dichroism, LD and chiroptical (circular birefringence, CB; circular dichroism, CD measurements on single crystals without any pretreatment, in the visible region between 400–680 nm. The principle of the HAUP method is to measure the intensities of emergent light passing through a polarizer, a crystal sample, and then an analyzer, as the azimuth angles of the polarizer and analyzer are independently altered. The CCD-HAUP has the unique feature that white transmitted light intensity can be measured using a CCD spectrometer, compared with the generalized HAUP (G-HAUP system in which monochromatic transmitted light is measured using a photomultiplier. The CCD-HAUP measurements across the entire wavelength region are completed within the G-HAUP measurement time for a single wavelength. The CCD-HAUP drastically reduces the measurement time for a dataset to only 1.5 h, from the 24 h required for the G-HAUP system. LB, LD, CB, and CD measurements of single crystals of α-quartz and enantiomeric photomechanical salicylidenephenylethylamines before, during, and after ultraviolet light irradiation show results comparable to those obtained using the G-HAUP system. The newly developed system is very effective for samples susceptible to degradation induced by external stimuli, such as light and heat.

  12. Classification review of dental adhesive systems: from the IV generation to the universal type

    Science.gov (United States)

    Sofan, Eshrak; Sofan, Afrah; Palaia, Gaspare; Tenore, Gianluca; Romeo, Umberto; Migliau, Guido

    2017-01-01

    Summary Adhesive dentistry has undergone great progress in the last decades. In light of minimal-invasive dentistry, this new approach promotes a more conservative cavity design, which relies on the effectiveness of current enamel-dentine adhesives. Adhesive dentistry began in 1955 by Buonocore on the benefits of acid etching. With changing technologies, dental adhesives have evolved from no-etch to total-etch (4th and 5th generation) to self-etch (6th, 7th and 8th generation) systems. Currently, bonding to dental substrates is based on three different strategies: 1) etch-and-rinse, 2) self-etch and 3) resin-modified glass-ionomer approach as possessing the unique properties of self-adherence to the tooth tissue. More recently, a new family of dentin adhesives has been introduced (universal or multi-mode adhesives), which may be used either as etch-and-rinse or as self-etch adhesives. The purpose of this article is to review the literature on the current knowledge for each adhesive system according to their classification that have been advocated by many authorities in most operative/restorative procedures. As noted by several valuable studies that have contributed to understanding of bonding to various substrates helps clinicians to choose the appropriate dentin bonding agents for optimal clinical outcomes. PMID:28736601

  13. Psychological distress and tension-type headache among health professional senior students in a historically black university in south africa.

    Directory of Open Access Journals (Sweden)

    S.L. Amosun

    2002-02-01

    Full Text Available Studies in well-defined populations contribute to the body ofevidence that the psychosocial aspects of people’s environment can have a substantial effect on their physical health. Senior students in health professional education programs were interviewed using structured instruments to assess the prevalence of psychological distress and tension-type headaches in a young adult university population.  Almost 70%of the study sample was either at risk of becoming distressed, or already distressed with somatic or depressive symptoms. About two-thirds of thestudents reported symptoms of either tension-type headache or other typesof headache, while over 30% of all the students complained of tension-type headache. Almost 20% of the students whoreported symptoms of tension-type headache were also distressed, while another 47% were at risk of being distressed.The possible impact on the academic performance of the students and their future role as health care professionalsis discussed.

  14. Bianchi typeuniverse with bulk viscous matter and time varying gravitational and cosmological constants

    Institute of Scientific and Technical Information of China (English)

    Prashant Singh Baghel; Jagdish Prasad Singh

    2012-01-01

    We consider spatially homogeneous and anisotropic Bianchi type Ⅴ space-time with a bulk viscous fluid source,and time varying gravitational constant G and cosmological term A.The coefficient of bulk viscosity ζ is assumed to be a simple linear function of the Hubble parameter H (i.e.ζ=ζ0 + ζ1H,where ζ0 and ζ1 are constants).The Einstein field equations are solved explicitly by using a law of variation for the Hubble parameter,which yields a constant value of the deceleration parameter.Physical and kinematical parameters of the models are discussed.The models are found to be compatible with the results of astronomical observations.

  15. Einstein-aether theory: dynamics of relativistic particles with spin or polarization in a Gödel-type universe

    Science.gov (United States)

    Balakin, Alexander B.; Popov, Vladimir A.

    2017-04-01

    In the framework of the Einstein-aether theory we consider a cosmological model, which describes the evolution of the unit dynamic vector field with activated rotational degree of freedom. We discuss exact solutions of the Einstein-aether theory, for which the space-time is of the Gödel-type, the velocity four-vector of the aether motion is characterized by a non-vanishing vorticity, thus the rotational vectorial modes can be associated with the source of the universe rotation. The main goal of our paper is to study the motion of test relativistic particles with a vectorial internal degree of freedom (spin or polarization), which is coupled to the unit dynamic vector field. The particles are considered as the test ones in the given space-time background of the Gödel-type the spin (polarization) coupling to the unit dynamic vector field is modeled using exact solutions of three types. The first exact solution describes the aether with arbitrary Jacobson's coupling constants; the second one relates to the case, when the Jacobson's constant responsible for the vorticity is vanishing; the third exact solution is obtained using three constraints for the coupling constants. The analysis of the exact expressions, which are obtained for the particle momentum and for the spin (polarization) four-vector components, shows that the interaction of the spin (polarization) with the unit vector field induces a rotation, which is additional to the geodesic precession of the spin (polarization) associated with the universe rotation as a whole.

  16. Type II-Plateau supernovae as metallicity probes of the Universe

    CERN Document Server

    Dessart, L; Hamuy, M; Hillier, D J; Lanz, T; Anderson, J P; Folatelli, G; Freedman, W L; Ley, F; Morrell, N; Persson, S E; Phillips, M M; Stritzinger, M; Suntzeff, N B

    2014-01-01

    We explore a method for metallicity determinations based on quantitative spectroscopy of type II-Plateau (II-P) supernovae (SNe). For consistency, we first evolve a set of 15Msun main sequence stars at 0.1, 0.4, 1, and 2 x the solar metallicity. At the onset of core collapse, we trigger a piston-driven explosion and model the resulting ejecta and radiation. Our theoretical models of such red-supergiant-star explosions at different metallicity show that synthetic spectra of SNe II-P possess optical signatures during the recombination phase that are sensitive to metallicity variations. This sensitivity can be quantified and the metallicity inferred from the strength of metal-line absorptions. Furthermore, these signatures are not limited to O, but also include Na, Ca, Sc, Ti, or Fe. When compared to a sample of SNe II-P from the Carnegie SN Project and previous SN followup programs, we find that most events lie at a metallicity between 0.4 and 2 x solar, with a marked scarcity of SN II-P events at SMC metallici...

  17. Inflation and Singularity of a Bianchi Type-Ⅶ0 Universe with a Dirac Field in the Einstein-Cartan Theory

    Institute of Scientific and Technical Information of China (English)

    HUANG Zeng-Guang; FANG Wei; LU Hui-Qing

    2011-01-01

    @@ We discuss Bianchi type-Ⅶ0 cosmology with a Dirac field in the Einstein-Cartan(E-C) theory and obtain the equations of the Dirac and gravitational fields in the E-C theory.A Bianchi type-Ⅶ0 inflationary solution is found.When(3/16)S2-σ2>0, the Universe may avoid singularity.

  18. Basal Chromospheric Flux and Maunder Minimum-type Stars: The quiet-Sun Chromosphere as a Universal Phenomenon

    CERN Document Server

    Schroeder, K -P; Martinez, M I Perez; Cuntz, M; Schmitt, J H M M

    2012-01-01

    Aims: We demonstrate the universal character of the quiet-Sun chromosphere among inactive stars (solar-type and giants). By assessing the main physical processes, we shed new light on some common observational phenomena. Methods: We discuss measurements of the solar Mt. Wilson S-index, obtained by the Hamburg Robotic Telescope around the extreme minimum year 2009, and compare the established chromospheric basal Ca II K line flux to the Mt. Wilson S-index data of inactive ("flat activity") stars, including giants. Results: During the unusually deep and extended activity minimum of 2009, the Sun reached S-index values considerably deeper than in any of its previously observed minima. In several brief periods, the Sun coincided exactly with the S-indices of inactive ("flat", presumed Maunder Minimum-type) solar analogues of the Mt. Wilson sample; at the same time, the solar visible surface was also free of any plages or remaining weak activity regions. The corresponding minimum Ca II K flux of the quiet Sun and ...

  19. Type Ia Supernova Rate Measurements to Redshift 2.5 from CANDELS : Searching for Prompt Explosions in the Early Universe

    CERN Document Server

    Rodney, Steven A; Strolger, Louis-Gregory; Dahlen, Tomas; Graur, Or; Casertano, Stefano; Dickinson, Mark E; Ferguson, Henry C; Garnavich, Peter; Hayden, Brian; Jha, Saurabh W; Jones, David O; Kirshner, Robert P; Koekemoer, Anton M; McCully, Curtis; Mobasher, Bahram; Patel, Brandon; Weiner, Benjamin J; Cenko, Bradley S; Clubb, Kelsey I; Cooper, Michael; Filippenko, Alexei V; Frederiksen, Teddy F; Hjorth, Jens; Leibundgut, Bruno; Matheson, Thomas; Nayyeri, Hooshang; Penner, Kyle; Trump, Jonathan; Silverman, Jeffrey M; U, Vivian; Bostroem, K Azalee; Challis, Peter; Rajan, Abhijith; Wolff, Schuyler; Faber, S M; Grogin, Norman A; Kocevski, Dale

    2014-01-01

    The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space Telescope (HST) that surveyed a total area of ~0.25 deg^2 with ~900 HST orbits spread across 5 fields over 3 years. Within these survey images we discovered 65 supernovae (SN) of all types, out to z~2.5. We classify ~24 of these as Type Ia SN (SN Ia) based on host galaxy redshifts and SN photometry (supplemented by grism spectroscopy of 6 SN). Here we present a measurement of the volumetric SN Ia rate as a function of redshift, reaching for the first time beyond z=2 and putting new constraints on SN Ia progenitor models. Our highest redshift bin includes detections of SN that exploded when the universe was only ~3 Gyr old and near the peak of the cosmic star formation history. This gives the CANDELS high redshift sample unique leverage for evaluating the fraction of SN Ia that explode promptly after formation (40 Myr. However, a mild tension is apparent between ground-based low-z...

  20. Quantum cosmology in Ho\\v{r}ava-Lifshitz gravity

    CERN Document Server

    Obregón, O

    2013-01-01

    Quantum cosmology is studied within the framework of the minimal quantum gravity theory proposed by Ho\\v{r}ava. For this purpose we choose the Kantowski-Sachs (KS) model and construct the corresponding Wheeler-DeWitt equation. We study the solution to this equation in the ultraviolet limit for different values of the running parameter {\\lambda} of the theory. It is observed that the wave packet for this Universe changes completely compared with the one observed in the infrared (general relativity) regime. We also look at the classical solutions by means of a WKB semiclassical approximation. It is observed that if {\\lambda} takes its relativistic value {\\lambda} = 1 a generalized KS metric is obtained which differs from the usual KS solution in general relativity by an additional term arising from the higher-order curvature terms in the action and which dominates the behavior of the solution for very small values of the time parameter. We discuss the physical properties of this solution by comparing it with th...

  1. Scalar-tensor gravity and conformal continuations

    CERN Document Server

    Bronnikov, K A

    2002-01-01

    Global properties of vacuum static, spherically symmetric configurations are studied in a general class of scalar-tensor theories (STT) of gravity in various dimensions. The conformal mapping between the Jordan and Einstein frames is used as a tool. Necessary and sufficient conditions are found for the existence of solutions admitting a conformal continuation (CC). The latter means that a singularity in the Einstein-frame manifold maps to a regular surface S_(trans) in the Jordan frame, and the solution is then continued beyond this surface. S_(trans) can be an ordinary regular sphere or a horizon. In the second case, S_(trans) proves to connect two epochs of a Kantowski-Sachs type cosmology. It is shown that, in an arbitrary STT, with arbitrary potential functions $U(\\phi)$, the list of possible types of causal structures of vacuum space-times is the same as in general relativity with a cosmological constant. This is true even for conformally continued solutions. It is found that when S_(trans) is an ordinar...

  2. 12 CFR 1.130 - Type II securities; guidelines for obligations issued for university and housing purposes.

    Science.gov (United States)

    2010-01-01

    ... buildings, cafeterias, stadiums, and university parking lots. (2) An obligation that finances the... issued for university and housing purposes. 1.130 Section 1.130 Banks and Banking COMPTROLLER OF THE...; guidelines for obligations issued for university and housing purposes. (a) Investment quality. An...

  3. Type Ia Supernova Rate Measurements to Redshift 2.5 from Candles: Searching for Prompt Explosions in the Early Universe

    Science.gov (United States)

    Rodney, Steven A.; Riess, Adam G.; Strogler, Louis-Gregory; Dahlen, Tomas; Graur, Or; Casertano, Stefano; Dickinson, Mark E.; Ferguson, Henry C.; Garnavich, Peter; Cenko, Stephen Bradley

    2014-01-01

    The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space Telescope(HST) that surveyed a total area of approx. 0.25 deg(sup 2) with approx.900 HST orbits spread across five fields over three years. Within these survey images we discovered 65 supernovae (SNe) of all types, out to z approx. 2.5. We classify approx. 24 of these as Type Ia SNe (SNe Ia) based on host galaxy redshifts and SN photometry (supplemented by grism spectroscopy of six SNe). Here we present a measurement of the volumetric SN Ia rate as a function of redshift, reaching for the first time beyond z = 2 and putting new constraints on SN Ia progenitor models. Our highest redshift bin includes detections of SNe that exploded when the universe was only approx. 3 Gyr old and near the peak of the cosmic star formation history. This gives the CANDELS high redshift sample unique leverage for evaluating the fraction of SNe Ia that explode promptly after formation (500 Myr). Combining the CANDELS rates with all available SN Ia rate measurements in the literature we find that this prompt SN Ia fraction isfP0.530.09stat0.100.10sys0.26, consistent with a delay time distribution that follows a simplet1power law for all timest40 Myr. However, mild tension is apparent between ground-based low-z surveys and space-based high-z surveys. In both CANDELS and the sister HST program CLASH (Cluster Lensing And Supernova Survey with Hubble), we find a low rate of SNe Ia at z > 1. This could be a hint that prompt progenitors are in fact relatively rare, accounting for only 20 of all SN Ia explosions though further analysis and larger samples will be needed to examine that suggestion.

  4. Health literacy skills in type 2 diabetes mellitus outpatients from an university-affiliated hospital in Rio de Janeiro, Brazil.

    Science.gov (United States)

    de Castro, Simone H; Brito, Gilberto N O; Gomes, Marilia B

    2014-01-01

    Type 2 diabetes mellitus is the most common metabolic disorder and has considerable impact on quality of life. Treatment of DM2 is complex and adherence to treatment requires sophisticated cognition which includes literacy skills. Health literacy skills of a cross-sectional nonrandom sample of 164 DM2 outpatients at the Diabetes Unit of the Hospital Universitário Pedro Ernesto at the State University of Rio de Janeiro were evaluated by the short version of the Test of Functional Health Literacy in Adults (s-TOFHLA). Procedures available in the SPSS package were used in data analysis. Fourteen out of 164 patients (8.5%) were completely illiterate and therefore were not further assessed. The remaining 150 patients (75 men and 75 women) were the participants of this study. Data showed that 110 (73.3%) participants had adequate health literacy skills, 17 (11.3%) had marginal skills and 23 (15.3%) had inadequate skills. Moreover, older participants performed worse than younger patients. In addition, Caucasian and multiethnic participants performed better than Afro-Brazilians. Furthermore, participants with higher educational and occupational levels outperformed those with lower levels. However, only age and education, but not ethnic group and occupation, contributed significantly and independently to health literacy. This study showed that almost a quarter of the participants are illiterate or have inadequate health literacy skills. Therefore, our results indicate the need for the development of health care instructions properly calibrated to the health literacy skills of DM2 patients.

  5. Type III frontal sinusotomy: surgical technique, indications, outcomes, a multi-university retrospective study of 120 cases.

    Science.gov (United States)

    Eloy, P; Vlaminck, S; Jorissen, M; Hellings, P; Timmermans, M; Daele, J; Ransky, P; Hassid, S; Van Zele, T; Bachert, C; Poirrier, A L; Bertrand, B

    2011-01-01

    Draf in 1991. The procedure--which is also known as the modified endoscopic Lothrop procedure--aims to create the largest possible anteroposterior and lateral to lateral opening between both frontal sinuses and the nasal cavities. This requires the resection of the medial floor of both frontal sinuses, the intersinus septum and the superior nasal septum. The authors present a retrospective study including a cohort of 120 patients who underwent surgery in six Belgian university ENT departments. Mean follow-up was 24.6 months (range: 5-36 months). This paper describes the surgical procedure and reviews the indications, comorbidities, outcomes and complications of the type III frontal sinusotomy. Some correlations are also established with the data published in the worldwide literature. The authors conclude that the Draf III is a demanding procedure requiring considerable expertise in endoscopic sinus surgery. The procedure is effective with a success rate of 87.5%. Indeed, 12.5% of patients only experienced closure of the neoostium while 20% of all the patients had unchanged or worse symptomatology. The percentage of post-operative complications is 7.5%. All complications were managed successfully.

  6. Oncogenic HPV Types Infection in Adolescents and University Women from North Portugal: From Self-Sampling to Cancer Prevention

    Directory of Open Access Journals (Sweden)

    Jani Silva

    2011-01-01

    Full Text Available This study aimed to characterize the HPV infection status in adolescents and young university women in Portugal. The distribution of HPV genotypes was evaluated by PCR DNA genotyping after self-sampling collection from 435 women of exfoliated cervical cells using a commercial kit. We observed an overall frequency of HPV infection of 11.5%. Furthermore, HPV DNA prevalence was 16.6% in those young women that self-declared as sexually active. The more frequently detected HPV types were 31, 16, 53, and 61. Statistical analysis identified median age (OR=3.56; P=0.001, the number of lifetime sexual partners (OR=4.50; P<0.001, and years of sexual activity (OR=2.36; P=0.008 as risk factors for HPV acquisition. Hence, our study revealed that oncogenic HPV infection is common in young asymptomatic women Portuguese women, with a history of 2–5 sexual partners and over 2 year of sexual activity. Moreover, these results demonstrate that HPV detection performed in self-collected samples may be important to appraise better preventive strategies and to monitorize the influence of vaccination programmes within different populations.

  7. Self-gravitating global monopole and nonsingular cosmology

    CERN Document Server

    Bronnikov, K A

    2003-01-01

    We review some recent results concerning the properties of a spherically symmetric global monopole in $(D=d+2)$-dimensional general relativity. Some common features of monopole solutions are found independently of the choice of the symmetry-breaking potential. Thus, the solutions show six types of qualitative behavior and can contain at most one simple horizon. For the standard Mexican hat potential, we analytically find the $D$-dependent range of $\\gamma$ (the gravitational field strength parameter) in which there exist globally regular solutions with a monotonically growing Higgs field, containing a horizon and a Kantowski-Sachs (KS) cosmology outside it, where the topology of spatial sections is $\\R\\times \\S^d$. Their cosmological properties favor the idea that the standard Big Bang might be replaced with a nonsingular static core and a horizon appearing as a result of some symmetry-breaking phase transition on the Planck energy scale. We have also found families of new solutions with an oscillating Higgs ...

  8. Type of dyslipidemia and achievement of the LDL-cholesterol goal in chronic kidney disease patients at the University Hospital

    Directory of Open Access Journals (Sweden)

    Sangsawang T

    2015-11-01

    Full Text Available Tamon Sangsawang, Apiradee SriwijitkamolDivision of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, ThailandBackground: Chronic kidney disease (CKD has been defined as a coronary artery disease risk equivalent. Therefore, the current guideline has been recommended for CKD patients to reach and maintain a low-density lipoprotein-cholesterol (LDL-C goal of less than 100 mg/dL. However, the data regarding the achievement of LDL-C goal in these patients is lacking.Objective: This study was conducted to evaluate the types of dyslipidemia affecting patients with CKD stages 3 and 4 and to determine whether these patients achieved LDL-C goal.Methods: We performed a retrospective chart review of patients with CKD stage 3 or 4 and dyslipidemia who were followed-up at Siriraj Hospital between October 2011 and September 2012.Results: In total, 150 patients with CKD stage 3 or 4 and dyslipidemia were recruited. The mean age was 72±10 years, and the body mass index was 25.6±4 kg/m2; 60% had CKD stage 3 with an estimated glomerular filtration rate of 34±12 mL/min/1.73 m2, and 54% had type 2 diabetes. The percentage of patients with hypercholesterolemia was 78%, hypertriglyceridemia 54%, and low high-density lipoprotein-C 36%. Of these, 52% had mixed hyperlipidemia. Statin treatment was prescribed to 87% of the patients, of which only 31.3% achieved the LDL-C goal according to the National Cholesterol Education Program and the European Society of Cardiology/European Atherosclerosis Society recommendations. Patients who did not achieve the LDL-C goal had a higher cholesterol level at diagnosis and higher prevalence of type 2 diabetes and stroke than those who achieved it.Conclusion: Two-thirds of CKD patients with hyperlipidemia had mixed hyperlipidemia. Despite the high frequency of statin treatment, only one-third of patients with CKD achieved the LDL-C goal. Thus, a developmental plan

  9. 走出“成长型高校陷阱”——“成长型高校”走向“成熟型高校”的战略分析%Out of the Plight of Growth-type Universities: The Strategy Analysis of the Developing Path from Growth-type Universities to Mature Universities

    Institute of Scientific and Technical Information of China (English)

    张胤

    2012-01-01

    Facilitating a large number of growth-type universities into mature universi- ties, will not only promote universities' development, but also be helpful to advance the quality of China's higher education. However, there seemed to be a plight which made the growth-type universities remain at the same level for ever. Thus it's necessary to analyze the advantages and disadvantages of growth-type universities, so that they could make the right decisions and reach a new stage.%促进我国为数众多的“成长型高校”进一步发展,成为办学水平更高的“成熟型高校”,不仅对于“成长型高校”的自身发展,而且对于普遍提升中国高校的办学水平,提高教育质量具有重要的意义。然而,似乎存在一个“成长型高校陷阱”,使得大多数“成长型高校”难以成长为层次更高的“成熟型高校”。为破解这一发展陷阱,有必要对“成长型高校”的发展在战略层面上进行仔细分析,促进其作出正确抉择,使之走向更高位的发展。

  10. Revised catalogue of the type specimens of Recent Amphibians and Reptiles in the “Zoölogisch Museum” University of Amsterdam the Netherlands

    NARCIS (Netherlands)

    Tuijl, van L.

    1995-01-01

    This is a revision of the catalogue issued in 1966 (Daan & Hillenius) of type specimens of amphibians and reptiles in the collections of the ”Zoologisch Museum Amsterdam” (ZMA), also named: Institute for Systematics and Population Biology, of the University of Amsterdam.These include 51 holotypes, 1

  11. Dietary compliance and its association with glycemic control among poorly controlled type 2 diabetic outpatients in Hospital Universiti Sains Malaysia.

    Science.gov (United States)

    Tan, S L; Juliana, S; Sakinah, H

    2011-12-01

    Compliance with medical nutrition therapy is important to improve patient outcomes. The purpose of this study was to determine dietary compliance and its association with glycemic control among outpatients with poorly controlled type 2 diabetes mellitus (T2DM) in Hospital Universiti Sains Malaysia (HUSM). In this cross-sectional study, patients who had a glycosylated hemoglobin (HbA1c) level of at least 6.5%, after attending a diet counseling session at the Outpatient Dietetic Clinic, HUSM, were enrolled. Out of 150 diabetic patients reviewed between 2006 and 2008, 61 adults (32 men and 29 women) agreed to participate in this study. A questionnaire-based interview was used to collect socio-demographic, clinical and diabetes self-care data. The patient's dietary compliance rate was determined by the Summary of Diabetes Self-Care Activities (SDSCA) measure. Anthropometric and biological measurements were also taken. Only 16.4% of the respondents adhered to the dietary regimen provided by dietitians. Among the 7 dietary self-care behaviours, item number 6 (eat lots of food high in dietary fibre such as vegetable or oats) had the highest compliant rate (54.1%); whereas item number 3 (eat five or more servings of fruits and vegetables per day) had the lowest compliant rate (23.0%). There was a significant association between gender (p = 0.037) and fasting blood sugar (FBS) (p = 0.007) with the compliance status. Dietary non-compliance is still common among T2DM patients. Dietitians need to improve their skills and use more effective intervention approaches in providing dietary counseling to patients.

  12. The Role of the Myers-Briggs Personality Type and Emotional Intelligence in Marital Satisfaction among Married Female Students at Tehran University.

    Science.gov (United States)

    Shirzad, Galin

    2016-10-01

    The present descriptive correlational study was conducted to predict the role of emotional intelligence and the Myers-Briggs personality type in marital satisfaction in married female students Tehran University in 2015. The study population consisted of all the married female students at Tehran University who visited Iran MBTI center between 22.04.2015 and 21.06.2015. A total of 140 students were selected as the study samples. Data were collected using the Myer-Briggs Type Indicator, the Bar-On Emotional Intelligence Questionnaire and the Enrich Marital Satisfaction Scale and were then analyzed in SPSS-20 using the multivariate regression analysis. The results obtained showed that emotional intelligence (interpersonal and intra-personal skills) and personality type (extraverted and structured) can predict marital satisfaction.

  13. Characterization of near full-length genomes of HIV type 1 strains in Denmark: basis for a universal therapeutic vaccine

    DEFF Research Database (Denmark)

    Andresen, Betina S; Vinner, Lasse; Tang, Sheila

    2007-01-01

    directly on DNA extracted from short-term cocultures of PBMCs. The near full-length genomes did not contain any major insertions, deletions, or rearrangements. Sixteen of the isolates were characterized as nonrecombinant subtype B and one isolate as nonrecombinant subtype C. Phylogenetic analysis...... not subtype-specific or region-specific. This lends support for the concept of a universal immunotherapeutic vaccine construct based on these epitopes...

  14. Mode of delivery trends by hospital type: an 18-year comparison of a military hospital with university and community hospitals.

    Science.gov (United States)

    Dahlke, Joshua D; Magann, Everett F; Bird, Tommy M; Rohloff, Jesse; Scardo, James A; Morrison, John C

    2014-02-01

    To determine the rate of mode of delivery over 18 years in a military teaching hospital as compared to university and community hospitals. From January 1992 to December 2009, we retrospectively calculated yearly rates for mode of delivery from a military hospital, two university hospitals, a community hospital in South Carolina and all community hospitals in Arkansas. Over the 18-year period, 803,249 deliveries occurred from all hospitals. Overall the cesarean delivery rates have significantly increased across all practice models (22.7% + 0.9 versus 33.0% + 0.9, p = hospitals (21.8-37%) followed by community hospitals (26.7-32.9%) and the military hospital (19.6-29.2%). The rate of forceps-assisted deliveries has decreased dramatically across all practice models (11.6% + 1.3 versus 1.1% + 0.1, p = hospital, 12.6 to 1.4% in university hospitals, and 15.7 to 0.9% in military hospitals. The overall cesarean delivery rate has increased in all practice models but less so in the military. Forceps deliveries have dramatically decreased overall especially in the military hospital. Reprint & Copyright © 2014 Association of Military Surgeons of the U.S.

  15. PEKING UNIVERSITY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Type of Company: Government institution. New Preparartions and Late-Model Drug Delivery System Technical Plaform of Peking University School of Pharmaceutical Sciences is a national technical plaform for developing new and important drugs. The person in charge for the platform is a pharmaceutical science professor of Peking University School of Pharmaceutical Sciences. The plaform selects the following as the main research areas: late-model carrier drug delivery system, biotechnological drug delivery system,

  16. Relationships between Myers-Briggs type indicator measure of psychological type and neo measure of big five personality factors in Polish University students: a preliminary cross-cultural comparison.

    Science.gov (United States)

    Tobacyk, Jerome J; Livingston, Mary M; Robbins, James E

    2008-10-01

    English-language versions of the Myers-Briggs Type Indicator (Form G) measure of psychological type and the NEO-FFI measure of the Big Five personality factors were completed by 57 Polish university students fluent in the English language. The pattern of correlations between MBTI and NEO-FFI scales for the Polish sample was compared to the pattern of correlations for measures of these same constructs reported for Americans. Four of the five significant relationships between MBTI and NEO-FFI scales reported in the American sample were also recorded in the Polish sample: MBTI Extraversion-Introversion with NEO Extraversion, MBTI Sensing-Intuition and MBTI Judging-Perceiving with NEO-Openness, and MBTI Judging-Perceiving with NEO Conscientiousness. Pending replication with a larger, more representative sample, this preliminary study supports the validity of psychological type in Polish society.

  17. Archimedean-type force in a cosmic dark fluid: II. Qualitative and numerical study of a multi-stage Universe expansion

    CERN Document Server

    Balakin, Alexander B

    2010-01-01

    In this (second) part of the work we present the results of numerical and qualitative analysis, based on a new model of the Archimedean-type interaction between Dark Matter and Dark Energy. The Archimedean-type force is linear in the four-gradient of the Dark Energy pressure and plays a role of self-regulator of the energy redistribution in a cosmic Dark Fluid. Due to the Archimedean-type interaction the cosmological evolution is shown to have a multi-stage character. Depending on the choice of the values of the model guiding parameters, the Universe expansion is shown to be perpetually accelerated, periodic or quasi-periodic with finite number of deceleration/acceleration epochs. We distinguished the models, which can be definitely characterized by the inflation in the Early Universe, by the late-time accelerated expansion and non-singular behavior in intermediate epochs, and classified them with respect to a number of transition points. Transition points appear, when the acceleration parameter changes the s...

  18. String cosmology in LRS Bianchi type-II dusty Universe with time-decaying vacuum energy density

    Indian Academy of Sciences (India)

    Hassan Amirhashchi; Hosein Mohamadian

    2012-04-01

    A model of a cloud formed by massive strings is used as a source of LRS Bianchi type-II with time-decaying vacuum energy density . To construct string cosmological models, we have used the energy–momentum tensor for such strings as formulated by Letelier (1983). The high nonlinear field equations have been solved for two types of strings: (i) massive string and (ii) Nambu string. The expansion in the model is assumed to be proportional to the shear . This condition leads to $A = B^m$, where and are the metric coefficients, is a constant and is an integrating constant. Our models are in accelerating phase which is consistent with the recent observations of supernovae type-Ia. The physical and geometrical behaviour of these models are also discussed.

  19. [Spa types and antibiotic resistance of Staphylococcus aureus bloodstream isolates obtained form patients of the University Clinical Center in Gdańsk].

    Science.gov (United States)

    Wiśniewska, Katarzyna; Kasprzyk, Joanna; Piechowicz, Lidia; Bronk, Marek; Swieć, Krystyna

    2013-01-01

    Staphylococcus aureus is a leading cause of bloodstream infections. For epidemiological investigations of this bacteria spa genotyping is used as the method which has a high discriminatory power and gives results that can be easily compared between laboratories. In contrast to methicillin-resistant S.aureus (MRSA), relatively little is known about spa types among methicillin-susceptible strains (MSSA). We used spa typing and antibiotic resistance patterns analysis for retrospective study of S.aureus bloodstream isolates population from the University Clinical Centre (UCC) in Gdańsk. The study was performed on 53 isolates from patients of 19 different units/ departments of the UCC. The isolates were tested for the susceptibility to antimicrobial agents. Spa typing was performed on the basis of the sequence analysis of the polymorphic X region of the protein A gene (spa) amplified form the isolates. Spa types were determined by Ridom Staph Type software and were clustered into spa-CCs (clonal complexes) using the algorithm BURP-based upon repeat pattern. MLST (Multilocus Sequence Typing) clonal complexes were predicted from BURP analysis by the Ridom SpaServer database. In MRSA the staphylococcal chromosomal casette (SCC) mec was determined, Spa-typing yielded 26 types. Six spa-CC and seven singletons were identified. The most frequent was spa-CC021involving 38% of isolates. The CC021 consisted of 7 spa types and the most common was t021 corresponding with MLST-CC30. The second frequent was singleton, related to MLST-CC1, with only one type t127. There were 3 MRSA isolates in the population. The MRSA strains were identified as different spa types: t003/ SCCmecII, t008/SCCmecIV and clonally related to MSSA t032/SCCmecIV. No one MRSA strains belonged to spa-CC021. The spa clonal cluster corresponding with widely distributed among invasive S.aureus strains in Europe MLST-CC30 was found as the most frequent among S.aureus bloodstream isolates from the UCC. Occurrence of

  20. Postsecondary Education--Participation and Dropping out: Differences across University, College and Other Types of Postsecondary Institutions. Culture, Tourism and the Centre for Education Statistics. Research Paper. Catalogue no. 81-595-M No. 070

    Science.gov (United States)

    Shaienks, Danielle; Gluszynski, Tomasz; Bayard, Justin

    2008-01-01

    The purpose of this paper is to capture and profile postsecondary education dropouts from three different types of postsecondary education--university, college and other types of institutions. It compares them with graduates from these three types of institutions. The analysis for this report is based on data from the Youth in Transition Survey…

  1. Postsecondary Education--Participation and Dropping out: Differences across University, College and Other Types of Postsecondary Institutions. Culture, Tourism and the Centre for Education Statistics. Research Paper. Catalogue no. 81-595-M No. 070

    Science.gov (United States)

    Shaienks, Danielle; Gluszynski, Tomasz; Bayard, Justin

    2008-01-01

    The purpose of this paper is to capture and profile postsecondary education dropouts from three different types of postsecondary education--university, college and other types of institutions. It compares them with graduates from these three types of institutions. The analysis for this report is based on data from the Youth in Transition Survey…

  2. The usability of a 15-gene hypoxia classifier as a universal hypoxia profile in various cancer cell types

    DEFF Research Database (Denmark)

    Sørensen, Brita Singers; Knudsen, Anders Bisgård; Wittrup, Catja Foged

    2015-01-01

    genes, with BNIP3 not being upregulated at hypoxic conditions in 3 out of 6 colon cancer cell lines, and ALDOA in OE21 and FAM162A and SLC2A1 in SW116 only showing limited hypoxia induction. Furthermore, in the esophagus cell lines, the normoxic and hypoxic expression levels of LOX and BNIP3 were below......BACKGROUND AND PURPOSE: A 15-gene hypoxia profile has previously demonstrated to have both prognostic and predictive impact for hypoxic modification in squamous cell carcinoma of the head and neck. This gene expression profile may also have a prognostic value in other histological cancer types...... the tissue type dependency of hypoxia induced genes included in a 15-gene hypoxic profile in carcinoma cell lines from prostate, colon, and esophagus cancer, and demonstrated that in vitro, with minor fluctuations, the genes in the hypoxic profile are hypoxia inducible, and the hypoxia profile may...

  3. Is social support universally adaptive in diabetes? A correlational study in an Arabic-speaking population with type 2 diabetes.

    Science.gov (United States)

    Sukkarieh-Haraty, Ola; Howard, Elizabeth

    2015-01-01

    The purpose of this study was to assess the relationship between diabetes self-care, diabetes-specific emotional distress, and social support and glycemic control (hemoglobin A1C levels: HbA1c) among a sample of Lebanese adults with type 2 diabetes. A descriptive correlational design was adapted with descriptive statistics and multiple logistic regressions for analyses. A convenience sample of 140 adults diagnosed with type 2 diabetes was recruited from 2 diabetes clinics in Greater Beirut. Participants were asked to complete 4 questionnaires in Arabic. Significant associations (P < .05) were found between following a general diet for more than 3.5 days per week and higher social support and HbA1c levels of 7% or more. Social support was positively associated with HbA1c levels such that participants with uncontrolled glycemic levels, as evidenced by higher values for HbA1c, received more support from their social network.

  4. A New Class of LRS Bianchi Type ${\\rm VI}_{0}$ Universes with Free Gravitational Field and Decaying Vacuum Energy Density

    CERN Document Server

    Pradhan, Anirudh; Jotania, Kanti

    2009-01-01

    A new class of LRS Bianchi type ${\\rm VI}_{0}$ cosmological models with free gravitational fields and a variable cosmological term is investigated in presence of perfect fluid as well as bulk viscous fluid. To get the deterministic solution we have imposed the two different conditions over the free gravitational fields. In first case we consider the free gravitational field as magnetic type whereas in second case `gravitational wrench' of unit `pitch" is supposed to be present in free gravitational field. The viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density. The cosmological constant $\\Lambda$ is found to be a decreasing function of time and positive which is corroborated by results from recent supernovae Ia observations. The physical and geometric aspects of the models are discussed.

  5. Effects of physical therapy and relaxation techniques on the parameters of pain in university students with tension-type headache: A randomised controlled clinical trial.

    Science.gov (United States)

    Álvarez-Melcón, A C; Valero-Alcaide, R; Atín-Arratibel, M A; Melcón-Álvarez, A; Beneit-Montesinos, J V

    2016-08-01

    Non-pharmacological treatments help control tension-type headache; however, evidence about their effectiveness is still limited. This study evaluates the effectiveness of physical therapy based on cervical spine kinesiotherapy and posture correction exercises compared to a programme of relaxation techniques only (Schultz's Autogenic Training, AT). Tension-type headache is very common among university students. We randomly selected 152 university students with a diagnosis of tension-type headache according to the criteria of the International Headache Society. Eighty-four were women (55.3%) and 68 were men (44.7%). Mean age was 20.42±2.36 years. The study design is a randomised controlled trial of a non-pharmacological intervention with a blinded evaluation of response variables. We compared the results of two independent samples: AT was used in one of the groups while the other group received AT plus cervical spine kinesiotherapy and posture correction training. Patients recorded any changes in the parameters of pain (frequency, intensity, and duration) and drug consumption in a headache diary before treatment, at 4 weeks, and at 3 months. Both interventions achieved a decrease in all the parameters of pain; however, decreases in frequency and intensity were more significant in the combined treatment group (Pactive, non-invasive therapies as AT and cervical spine kinesiotherapy, and especially the combination of both, effectively reduce tension-type headache by preventing and managing the potential psychophysical causes of this disorder. Future research should aim to assess the long-term effects of these interventions. Copyright © 2016 Sociedad Española de Neurología. Publicado por Elsevier España, S.L.U. All rights reserved.

  6. Measurement of \\Omega_m, \\Omega_{\\Lambda} from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the Universe

    CERN Document Server

    Conley, A; Amanullah, R; Commins, E D; Fadeev, V; Folatelli, G; Garavini, G; Gibbons, R; Goldhaber, G; Goobar, A; Groom, D E; Hook, I; Howell, D A; Kim, A G; Knop, R A; Kowalski, M; Kuznetsova, N; Lidman, C; Nobili, S; Nugent, P; Pain, R; Perlmutter, S; Smith, E; Spadafora, A L; Stanishev, V; Strovink, M; Thomas, R C; Wang, L; Wood-Vasey, W M

    2006-01-01

    We present measurements of \\Omega_m and \\Omega_{\\Lambda} from a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia supernovae, first introduced in Wang et al. (2003). CMAGIC takes advantage of the remarkably simple behavior of Type Ia supernovae on color-magnitude diagrams, and has several advantages over current techniques based on maximum magnitudes. Among these are a reduced sensitivity to host galaxy dust extinction, a shallower luminosity-width relation, and the relative simplicity of the fitting procedure. This allows us to provide a cross check of previous supernova cosmology results, despite the fact that current data sets were not observed in a manner optimized for CMAGIC. We describe the details of our novel blindness procedure, which is designed to prevent experimenter bias. The data are broadly consistent with the picture of an accelerating Universe, and agree with a flat Universe within 1.7\\sigma, including systematics. ...

  7. Early Onset of Type 1 Diabetes and Educational Field at Upper Secondary and University Level: Is Own Experience an Asset for a Health Care Career?

    Directory of Open Access Journals (Sweden)

    Ida Lovén

    2017-06-01

    Full Text Available Ill health in early life has a significant negative impact on school grades, grade repetition, educational level, and labor market outcomes. However, less is known about qualitative socio-economic consequences of a health shock in childhood or adolescence. We investigate the relationship between onset of type 1 diabetes up to age 15 and the probability of choosing and completing a health-oriented path at upper secondary and university level of education. We analyze the Swedish Childhood Diabetes Register, the National Educational Register, and other population registers in Sweden for 2756 people with type 1 diabetes and 10,020 matched population controls. Educational decisions are modeled as unsorted series of binary choices to assess the choice of educational field as a potential mechanism linking early life health to adult outcomes. The analyses reject the hypothesis of no systematic differences in choice of educational field between people with and without type 1 diabetes at both levels. The results are robust to selection on ability proxies and across sensitivity analysis. We conclude that the observed pro health-oriented educational choices among people with type 1 diabetes in our data are consistent with disease onset in childhood and adolescence having qualitative impact on life-course choices.

  8. Sociodemographic and occupational risk factors associated with the development of different burnout types: the cross-sectional University of Zaragoza study

    Directory of Open Access Journals (Sweden)

    García-Campayo Javier

    2011-03-01

    Full Text Available Abstract Background Three different burnout types have been described: The "frenetic" type describes involved and ambitious subjects who sacrifice their health and personal lives for their jobs; the "underchallenged" type describes indifferent and bored workers who fail to find personal development in their jobs and the "worn-out" in type describes neglectful subjects who feel they have little control over results and whose efforts go unacknowledged. The study aimed to describe the possible associations between burnout types and general sociodemographic and occupational characteristics. Methods A cross-sectional study was carried out on a multi-occupational sample of randomly selected university employees (n = 409. The presence of burnout types was assessed by means of the "Burnout Clinical Subtype Questionnaire (BCSQ-36", and the degree of association between variables was assessed using an adjusted odds ratio (OR obtained from multivariate logistic regression models. Results Individuals working more than 40 hours per week presented with the greatest risk for "frenetic" burnout compared to those working fewer than 35 hours (adjusted OR = 5.69; 95% CI = 2.52-12.82; p p = 0.023. Employees with more than sixteen years of service in the organisation presented the greatest risk of "worn-out" burnout compared to those with less than four years of service (adjusted OR = 4.56; 95% CI = 1.47-14.16; p = 0.009. Conclusions This study is the first to our knowledge that suggests the existence of associations between the different burnout subtypes (classified according to the degree of dedication to work and the different sociodemographic and occupational characteristics that are congruent with the definition of each of the subtypes. These results are consistent with the clinical profile definitions of burnout syndrome. In addition, they assist the recognition of distinct profiles and reinforce the idea of differential characterisation of the syndrome for

  9. Evening types among german university students score higher on sense of humor after controlling for big five personality factors.

    Science.gov (United States)

    Randler, Christoph

    2008-10-01

    Humor research has focused on relationships between humor and various personality traits. As personality and morningness-eveningness, as well as personality and humor, are related based on genetics and neurobehavioral function, one might also expect a relationship between humor and chronotype. 197 students responded to the Composite Scale of Morningness as a measure of chronotype, the Sense of Humor Questionnaire and a 10-item version of the Big Five Inventory. Individuals scoring as evening types reported a greater sense of humor than morning individuals, with higher morningness scores. In a stepwise linear regression, Extraversion, Agreeableness, Openness, and Chronotype each accounted for a significant amount of variance in sense of Humor scores. That is, the relationship between scores on Sense of Humor and evening orientation was significant after controlling for personality dimensions. Eveningness was related to sense of Humor scores in women but not in men. Social but not cognitive humor was predicted by eveningness.

  10. On the Construction of Knowledge-type University Logistic Team under the New Situation%新形势下高校后勤知识型团队建设探析

    Institute of Scientific and Technical Information of China (English)

    赵言秀

    2013-01-01

    A knowledge-type university logistic team helps to enhance the working efficiency and service level of university logistics, and promote the harmonious development of universities. This paper analyzes the current situation of university logistic team construction and the characteristics of the knowledge-type university logistic team, and proposes counter-measures.%高校后勤知识型团队建设能提高后勤工作效率和服务水平,促进高校的和谐发展。本文分析了高校后勤团队建设的现状和高校后勤知识型团队的特征,提出了高校后勤知识型团队建设的对策。

  11. The learning type makes the difference - the interrelation of Kolb's learning styles and psychological status of preclinical medical students at the University of Erlangen.

    Science.gov (United States)

    Burger, Pascal H; Scholz, Michael

    2014-01-01

    Theories on learning styles and types have been integral to discussions on the basics of teaching for nearly 40 years. The learning style typology of Kolb divides learners into four groups (Diverger, Assimilator, Converger and Accomodator), which differ both in terms of their learning behaviour as well as personality and preferences. We studied the sense of coherence and burnout symptoms in medical students of the preclinical semesters (1(st) to 4(th) semester) at the Friedrich-Alexander University of Erlangen within the context of the observed learning styles. A total of 530 students were interviewed in winter semester 2012/13 using standardized psychometric questionnaires. Our students showed a significant correlation between the respective learning styles and expression of a sense of coherence, as well as cognitive and emotional burnout symptoms. The learning styles of the students differed significantly within these same parameters. We also demonstrated that learning styles and types not only influence study performance, but that there are also relationships to sense of coherence and psychological ailments. A more forward-looking integration of the theory of learning types in the medical education curriculum could positively influence both the performance and psychological well-being of the students.

  12. The learning type makes the difference – the interrelation of Kolb's learning styles and psychological status of preclinical medical students at the University of Erlangen

    Science.gov (United States)

    Burger, Pascal H.; Scholz, Michael

    2014-01-01

    Theories on learning styles and types have been integral to discussions on the basics of teaching for nearly 40 years. The learning style typology of Kolb divides learners into four groups (Diverger, Assimilator, Converger and Accomodator), which differ both in terms of their learning behaviour as well as personality and preferences. We studied the sense of coherence and burnout symptoms in medical students of the preclinical semesters (1st to 4th semester) at the Friedrich-Alexander University of Erlangen within the context of the observed learning styles. A total of 530 students were interviewed in winter semester 2012/13 using standardized psychometric questionnaires. Our students showed a significant correlation between the respective learning styles and expression of a sense of coherence, as well as cognitive and emotional burnout symptoms. The learning styles of the students differed significantly within these same parameters. We also demonstrated that learning styles and types not only influence study performance, but that there are also relationships to sense of coherence and psychological ailments. A more forward-looking integration of the theory of learning types in the medical education curriculum could positively influence both the performance and psychological well-being of the students. PMID:25489342

  13. The MASSIVE Survey V.: The X-ray halos of the most massive early-type galaxies in the nearby Universe

    CERN Document Server

    Goulding, Andy D; Ma, Chung-Pei; Veale, Melanie; Bogdan, Akos; Nyland, Kristina; Blakeslee, John P; McConnell, Nicholas J; Thomas, Jens

    2016-01-01

    Studies of the physical properties of local elliptical galaxies (e.g., gas temperatures, halo masses, stellar kinematics) are shedding new light on galaxy formation. Here we present the hot X-ray gas properties of 33 early-type systems within the MASSIVE galaxy survey sample that have archival Chandra X-ray observations. Through careful X-ray spectral modeling, we derive X-ray luminosities (L_X) and plasma temperatures (T_gas) for the diffuse gas components in these galaxies. We combine the MASSIVE sample with 41 galaxies from the ATLAS^3D survey to investigate the X-ray and optical properties of a statistically significant sample of nearby early-type galaxies across a wide-range of environments. We deduce that all early-type galaxies (independent of galaxy mass and rotational support) follow a universal scaling law such that L_X~T_gas^4.5. When X-ray measurements are performed consistently in apertures set by the galaxy stellar content, the wide-scale environment does not contribute to the intrinsic scatter ...

  14. ~PEKING UNIVERSITY

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Type of Company: Government institution. New Preparartions and Late-Model Drug Delivery System Technical Plaform of Peking University School of Pharmaceutical Sciences is a national technical plaform for developing new and important drugs. The person in charge for the platform is a pharmaceutical science professor of Peking University School of Pharmaceutical Sciences. The plaform selects the following as the main research areas: late-model carrier drug delivery system, biotechnological drug delivery system, mucous and transdermal drug delivery system, oral controlled-release drug delivery system, and four corresponding research teams are set up to study in depth the main problems and key issues.

  15. H2: entanglement, probability density function, confined Kratzer oscillator, universal potential and (Mexican hat- or bell-type) potential energy curves

    CERN Document Server

    Van Hooydonk, G

    2011-01-01

    We review harmonic oscillator theory for closed, stable quantum systems. The H2 potential energy curve (PEC) of Mexican hat-type, calculated with a confined Kratzer oscillator, is better than the Rydberg-Klein-Rees (RKR) H2 PEC. Compared with QM, the theory of chemical bonding is simplified, since a confined Kratzer oscillator gives the long sought for universal function, once called the Holy Grail of Molecular Spectroscopy. This is validated with HF, I2, N2 and O2 PECs. We quantify the entanglement of spatially separated H2 quantum states, which gives a braid view. The equal probability for H2, originating either from HA+HB or HB+HA, is quantified with a Gauss probability density function. At the Bohr scale, confined harmonic oscillators behave properly at all extremes of bound two-nucleon quantum systems and are likely to be useful also at the nuclear scale.

  16. Review of 793 facial fractures treated from 2001 to 2008 in a coruña university hospital: types and etiology.

    Science.gov (United States)

    Pombo, Maria; Luaces-Rey, Ramón; Pértega, Sonia; Arenaz, Jorge; Crespo, Jose Luis; García-Rozado, Alvaro; Patiño, Beatriz; López-Cedrún, Jose Luis

    2010-03-01

    The purpose of this article is to analyze the incidence, demographic distribution, type, and etiology of all facial fractures treated by the Department of Oral and Maxillofacial Surgery in A Coruña University Hospital (Spain) from 2001 to 2008. A descriptive and analytic retrospective study evaluated 643 patients treated for facial fracture (excluding nasal and dento-alveolar) by the Department of Oral and Maxillofacial Surgery in A Coruña University Hospital from January 2001 to December 2008. Five parameters were studied: year of the injury, gender, age, fracture type, and etiology. Six hundred and forty-three patients with 793 fractures were included. Of these, 83.2% were males and 16.8% were females. The patients' age ranged between 18 months and 89 years, with a mean of 37.6 and a median of 33. The major cause of injury was traffic accidents (27%), followed by assaults (20.5%), accidental traumas (20.1%), sports (11%), syncopes (7.8%), rural accidents (6.1%), industrial accidents (5.1%), and suicide attempts (0.3%). In 1.1% of the patients, it was impossible to verify the etiology. The etiology of facial fractures varies from one country to another, depending on the cultural, environmental, and socioeconomic factors. In our study, the most common cause was traffic accidents, closely followed by assaults. The number of fractures due to traffic accidents has decreased in the last 3 years. Rural accidents accounted for a significantly higher percentage of fractures than that observed in other series. The number of fractures receiving a surgical treatment from 2005 to 2008 has progressively decreased.

  17. The MASSIVE Survey. IV. The X-ray Halos of the Most Massive Early-type Galaxies in the Nearby Universe

    Science.gov (United States)

    Goulding, Andy D.; Greene, Jenny E.; Ma, Chung-Pei; Veale, Melanie; Bogdan, Akos; Nyland, Kristina; Blakeslee, John P.; McConnell, Nicholas J.; Thomas, Jens

    2016-08-01

    Studies of the physical properties of local elliptical galaxies are shedding new light on galaxy formation. Here we present the hot-gas properties of 33 early-type systems within the MASSIVE galaxy survey that have archival Chandra X-ray observations, and we use these data to derive X-ray luminosities ({L}{{X,gas}}) and plasma temperatures ({T}{{gas}}) for the diffuse gas components. We combine this with the {{ATLAS}}{{3D}} survey to investigate the X-ray-optical properties of a statistically significant sample of early-type galaxies across a wide range of environments. When X-ray measurements are performed consistently in apertures set by the galaxy stellar content, we deduce that all early types (independent of galaxy mass, environment, and rotational support) follow a universal scaling law such that {L}{{X,gas}}\\propto {T}{{gas}}˜ 4.5. We further demonstrate that the scatter in {L}{{X,gas}} around both K-band luminosity (L K ) and the galaxy stellar velocity dispersion ({σ }e) is primarily driven by {T}{{gas}}, with no clear trends with halo mass, radio power, or angular momentum of the stars. It is not trivial to tie the gas origin directly to either stellar mass or galaxy potential. Indeed, our data require a steeper relation between {L}{{X,gas}},{L}K, and {σ }e than predicted by standard mass-loss models. Finally, we find that {T}{{gas}} is set by the galaxy potential inside the optical effective radius. We conclude that within the innermost 10-30 kpc region, early types maintain pressure-supported hot gas, with a minimum {T}{{gas}} set by the virial temperature, but the majority show evidence for additional heating.

  18. Changes in the distribution of lung cancer cell types and patient demography in a developing multiracial Asian country: experience of a university teaching hospital.

    Science.gov (United States)

    Liam, Chong-Kin; Pang, Yong-Kek; Leow, Chai-Hooi; Poosparajah, Shyamala; Menon, Ashoka

    2006-07-01

    A comparison of patients with lung cancer diagnosed at the University of Malaya Medical Centre, Kuala Lumpur, Malaysia from October 1991 to September 1999 with another group of lung cancer patients diagnosed at the same hospital during an earlier period of 1967-1976 was undertaken to determine whether there had been a change in the distribution of lung cancer cell types and patient demography. The number of histologically and/or cytologically proven lung cancer cases was 583 from October 1991 to September 1999 and 278 from 1967 to 1976. The mean (S.D.) age of the patients during the period 1991-1999, 60.1 (12.0) years was similar to that of patients during the period 1967-1976, 60.3 (12.2) years. There was no shift of the peak age distribution of lung cancer (i.e., the 7th decade) between the two periods. In the recent period, the percentage of patients with adenocarcinoma had increased significantly to 43.2% from 25.2% while that of large cell carcinoma had decreased to 3.3% from 11.9%. The percentages of patients with squamous cell carcinoma (SCC) and small cell lung cancer remained stable. In the period 1967-1976, SCC was the commonest cell type in men and in smokers while adenocarcinoma was the commonest cell type in women and in never smokers. In the period 1991-1999, adenocarcinoma was the commonest cell type in both men and women as well as in smokers and never smokers.

  19. Adherence and Associated Factors towards Antidiabetic Medication among Type II Diabetic Patients on Follow-Up at University of Gondar Hospital, Northwest Ethiopia

    Directory of Open Access Journals (Sweden)

    Mastewal Abebaw

    2016-01-01

    Full Text Available Background. The prevalence of diabetes mellitus (DM is rising worldwide and is more in the developing countries which unfortunately are already suffering from communicable diseases. The aim of this study was to assess adherence and associated factors towards antidiabetic medication among type II diabetic patients in University of Gondar Hospital, Diabetic Clinic, Gondar, Northwest Ethiopia. Methods. Institutional based cross-sectional study was conducted. Systematic sampling technique was used. Morisky Medication Adherence Scale (MMAS scores were used for labeling patients as adherent or nonadherent. Data were entered and analyzed using SPSS version 20. To see the association of variables logistic regression with OR and 95% CI was done. Results. A total of 288 study participants were interviewed with response rate of 100%. The level of adherence was found to be 85.1%. Factors found to be significantly associated with antidiabetic medication adherence were level of education (AOR = 14.27, 95% CI = 3.0, 67.82, duration of diabetes (AOR = 6.10, 95% CI = 2.03, 18.34, and knowledge about DM and its medications (AOR = 28.05, 95% CI = 8.96, 87.8. Conclusions and Recommendations. Large proportion of respondents in this study were found to be adherent to their antidiabetic medications. Level of education, duration of diabetes, and knowledge about DM and its medication were significantly associated with antidiabetic medication adherence of patients. Health education including adherence counseling to create awareness towards DM and its medications is mandatory.

  20. Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types

    Directory of Open Access Journals (Sweden)

    Z. A. Kanji

    2011-01-01

    Full Text Available The University of Toronto continuous flow diffusion chamber (UT-CFDC was used to study heterogeneous ice nucleation at the International Workshop on Comparing Ice Nucleation Measuring Systems (ICIS 2007 which also represented the 4-th ice nucleation workshop, on 14–28 September 2007. One goal of the workshop was to inter-compare different ice nucleation measurement techniques using the same aerosol sample source and preparation method. The aerosol samples included four types of desert mineral dust, graphite soot particles, and live and dead bacterial cells (Snomax®. This paper focuses on the UT-CFDC results, with a comparison to techniques of established heritage including the Colorado State CFDC and the AIDA expansion chamber. Good agreement was found between the different instruments with a few specific differences, especially at low temperatures, perhaps due to the variation in how onset of ice formation is defined between the instruments and the different inherent residence times. It was found that when efficiency of ice formation is based on the lowest onset relative humidity, Snomax® particles were most efficient followed by the desert dusts and then soot. For all aerosols, deposition mode freezing was only observed for T<45 K except for the dead bacteria where freezing occurred below water saturation as warm as 263 K.

  1. Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types

    Science.gov (United States)

    Kanji, Z. A.; Demott, P. J.; Möhler, O.; Abbatt, J. P. D.

    2011-01-01

    The University of Toronto continuous flow diffusion chamber (UT-CFDC) was used to study heterogeneous ice nucleation at the International Workshop on Comparing Ice Nucleation Measuring Systems (ICIS 2007) which also represented the 4-th ice nucleation workshop, on 14-28 September 2007. One goal of the workshop was to inter-compare different ice nucleation measurement techniques using the same aerosol sample source and preparation method. The aerosol samples included four types of desert mineral dust, graphite soot particles, and live and dead bacterial cells (Snomax®). This paper focuses on the UT-CFDC results, with a comparison to techniques of established heritage including the Colorado State CFDC and the AIDA expansion chamber. Good agreement was found between the different instruments with a few specific differences, especially at low temperatures, perhaps due to the variation in how onset of ice formation is defined between the instruments and the different inherent residence times. It was found that when efficiency of ice formation is based on the lowest onset relative humidity, Snomax® particles were most efficient followed by the desert dusts and then soot. For all aerosols, deposition mode freezing was only observed for T<45 K except for the dead bacteria where freezing occurred below water saturation as warm as 263 K.

  2. Emergence of product of constant curvature spaces in loop quantum cosmology

    CERN Document Server

    Dadhich, Naresh; Singh, Parampreet

    2015-01-01

    The loop quantum dynamics of Kantowski-Sachs spacetime and the interior of higher genus black hole spacetimes with a cosmological constant has some peculiar features not shared by various other spacetimes in loop quantum cosmology. As in the other cases, though the quantum geometric effects resolve the physical singularity and result in a non-singular bounce, after the bounce a spacetime with small spacetime curvature does not emerge in either the subsequent backward or the forward evolution. Rather, in the asymptotic limit the spacetime manifold is a product of two constant curvature spaces. Interestingly, though the spacetime curvature of these asymptotic spacetimes is very high, their effective metric is a solution to the Einstein's field equations. Analysis of the components of the Ricci tensor shows that after the singularity resolution, the Kantowski-Sachs spacetime leads to an effective metric which can be interpreted as the `charged' Nariai, while the higher genus black hole interior can similarly be ...

  3. Prevalence of herpes simplex virus types 1 and 2 and associated sociodemographic variables in pregnant women attending King Fahd Hospital of the university

    Directory of Open Access Journals (Sweden)

    Obeid E Obeid

    2007-01-01

    Full Text Available Objectives: The risk factors associated with herpes simplex virus (HSV seropositivity in pregnant women in Saudi Arabia are not known. This study was aimed at identifying the sociodemographic variables associated with seroprevalence of HSV-1 and HSV-2 in pregnant women in a Saudi hospital. Materials and Methods: This is a hospital-based cross-sectional study that included all pregnant mothers who delivered at King Fahd Hospital of the University (KFHU over a period of two years (November 2002 to October 2004. Anti-HSV-1 and anti-HSV-2 IgG and IgM antibodies were determined using type-specific ELISA. Each subject completed a structured questionnaire. Relevant sociodemographic variables were analyzed. Results: A higher prevalence of HSV-1 IgG antibodies (93.2% was found in those mothers who were not educated (illiterate or read and write only in comparison with pregnant women with formal school education (p = 0.021. This was confirmed by using multiple regression analysis (p = 0.027. The prevalence of HSV-2 IgG was higher among civil servants and teachers (40.0 % and 14.7 % respectively than in unskilled labourers, professionals, or housewives (p = 0.0001. Using multiple regression analysis, the prevalence of HSV-2 IgG was found to increase in older mothers (p = 0.037. No statistically significant association was found between HSV seroprevalence and other socio demographic variables. Conclusions: Identifying the sociodemographic factors associated with HSV infection will help in understanding the epidemiology of HSV infection in Saudi women and may help in designing preventive measures.

  4. Noncommutative Black Holes

    CERN Document Server

    Bastos, C; Dias, N C; Prata, J N

    2010-01-01

    One considers phase-space noncommutativity in the context of a Kantowski-Sachs cosmological model to study the interior of a Schwarzschild black hole. It is shown that the potential function of the corresponding quantum cosmology problem has a local minimum. One deduces the thermodynamics and show that the Hawking temperature and entropy exhibit an explicit dependence on the momentum noncommutativity regime and it is shown that the wave function vanishes in this limit.

  5. A quantum cosmological model in Ho\\v{r}ava-Lifshitz gravity

    CERN Document Server

    Obregón, O

    2013-01-01

    A Wheeler-DeWitt equation for the Kantowski-Sachs model is derived within the framework of the minimal quantum gravity theory proposed by Ho\\v{r}ava. We study the solution to this equation in the ultraviolet limit for the specific case where the {\\lambda} parameter of the theory takes its relativistic value {\\lambda} = 1. It is observed that the minisuperspace variables switch their role compared with their usual infrared (General Relativity) behavior.

  6. Towards Noncommutative Quantum Black Holes

    CERN Document Server

    Lopez-Dominguez, J C; Ramírez, C; Sabido, M

    2006-01-01

    In this paper we study noncommutative black holes. We use a diffeomorphism between the Schwarzschild black hole and the Kantowski-Sachs cosmological model, which is generalized to noncommutative minisuperspace. Trough the use of the Feynman-Hibbs procedure we are able to study the thermodynamics of the black hole, in particular we calculate the Hawking's temperature and entropy for the Noncommutative Schwarzschild black hole.

  7. Power-law mass inflation in Einstein-Yang-Mills-Higgs black holes

    CERN Document Server

    Galtsov, D V

    1997-01-01

    Analytical formulas are presented describing a generic singularity inside the static spherically symmetric black holes in the SU(2) Einstein-Yang-Mills-Higgs theories with triplet or doublet Higgs field. The singularity is spacelike and exhibits a `power-low mass inflation'. Alternatively this asymptotic may be interpreted as a pointlike singularity with a non-vanishing shear in the Kantowski-Sachs anisotropic cosmology.

  8. Noncommutative black holes

    Energy Technology Data Exchange (ETDEWEB)

    Lopez-DomInguez, J C [Instituto de Fisica de la Universidad de Guanajuato PO Box E-143, 37150 Leoen Gto. (Mexico); Obregon, O [Instituto de Fisica de la Universidad de Guanajuato PO Box E-143, 37150 Leoen Gto. (Mexico); RamIrez, C [Facultad de Ciencias FIsico Matematicas, Universidad Autonoma de Puebla, PO Box 1364, 72000 Puebla (Mexico); Sabido, M [Instituto de Fisica de la Universidad de Guanajuato PO Box E-143, 37150 Leoen Gto. (Mexico)

    2007-11-15

    We study noncommutative black holes, by using a diffeomorphism between the Schwarzschild black hole and the Kantowski-Sachs cosmological model, which is generalized to noncommutative minisuperspace. Through the use of the Feynman-Hibbs procedure we are able to study the thermodynamics of the black hole, in particular, we calculate Hawking's temperature and entropy for the 'noncommutative' Schwarzschild black hole.

  9. Noncanonical Phase-Space Noncommutative Black Holes

    CERN Document Server

    Bastos, Catarina; Dias, Nuno; Prata, João

    2012-01-01

    In this contribution we present a noncanonical phase-space noncommutative (NC) extension of a Kantowski Sachs (KS) cosmological model to describe the interior of a Schwarzschild black hole (BH). We evaluate the thermodynamical quantities inside this NC Schwarzschild BH and compare with the well known quantities. We find that for a NCBH the temperature and entropy have the same mass dependence as the Hawking quantities for a Schwarzschild BH.

  10. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 13 May 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Observing the extreme universe with the Fermi Gamma-ray Space Telescope Prof. Olaf Reimer / Stanford University The Fermi Gamma-ray Space Telescope (FGST, formerly GLAST) is an international observatory-type satellite mission with a physics program spanning from gamma-ray astronomy to particle astrophysics and cosmology. FGST was launched on June 11, 2008 and is successfully conducting science observations of the high-energy gamma-ray sky since August 2008. A varienty of discoveries has been made already, including monitoring rapid blazar variability, the existence of GeV gamma-ray bursts, and numerous new gamma-ray sources of different types, including those belonging to previously unknown gamma-ray source classes like msPSRs, globula...

  11. 应用型本科院校定位及应用型人才培养研究%Research on Applied Type of Undergraduate Colleges and Universities and Cultivation of Applied Talents

    Institute of Scientific and Technical Information of China (English)

    吴现立

    2016-01-01

    探讨应用型本科院校定位及应用型人才的内涵,指出应用型人才与研究型人才的区别、应用型本科院校应用型人才培养与高职高专技能型人才培养的区别,提出应用型本科院校转型发展的任务和应用型人才培养的措施。%This paper explored the position and the connotation of the applied type of undergraduate colleges and u-niversities and pointed out the differences between applied type of talented students and those of the researching type,the differences between cultivating the applied type of undergraduates of the colleges and universities and those of the skilled type of talents trained in higher vocational and technical colleges,and finally proposed the transformational and developing tasks for the applied type of undergraduate institutions and measures for training the applied type of talents.

  12. The use of spa and phage typing for characterization of clinical isolates of methicillin-resistant Staphylococcus aureus in the University Clinical Center in Gdańsk, Poland.

    Science.gov (United States)

    Wiśniewska, Katarzyna; Szewczyk, Anna; Piechowicz, Lidia; Bronk, Marek; Samet, Alfred; Swieć, Krystyna

    2012-05-01

    The emergence of spa types and spa-clonal complexes (CC) among clinical methicillin-resistant Staphylococcus aureus isolates collected from the University Clinical Center in Gdańsk between 2008 and 2009 were investigated. Phage typing was used as the initial screening in the study. The basic set of phages and the additional set of phages were used. Most of the isolates (56 %) belonged to the phage group III. With the additional set of phages, eight types were found, with predominant one MR8 (50 %). Sixteen distinct spa types were observed. The most frequent were t003 (22 %), t151 (16 %), and t008 (12 %). The spa types were clustered into two spa-CC and eight singletons. The predominant CC010 (50 %) consisted of six types, with the most common t003 (36.7 %) and t151(26.7 %), and in 80 % was identified as staphylococcal chromosomal casette mec (SCCmec) type II. The second cluster has no founder (12 %) with only two spa types: t037 belonging to SCCmec type III and t029. In the most frequent singleton, spa type t008 alone was clustered in 12 % of the isolates. All singletons correspond to SCCmec type IV. The CC010 was distributed in most of the hospital wards, corresponded to Multilocus sequence typing type ST5/ST225 and was constantly present throughout the observed period. The isolates of CC010 generally belonged to the phage group III, and most of them (53.3 %) were resistant to erythromycin, clindamycin, and ciprofloxacin. The concordance between spa-clone and phage type was very high, but the same phage type MR8 was observed within different spa types of the predominant clone.

  13. Role of Leading Programs in Doctoral Education: A New Type of Leadership Education in the Sciences at University of Hyogo, Japan

    Directory of Open Access Journals (Sweden)

    Maya Okamoto

    2015-01-01

    Full Text Available Fostering global leaders for the next generation is an important mission of universities. In Japan, Leading Programs in Doctoral Education (LP has been implemented in many graduate schools. The main goal of this program is to foster PhDs with deep specialization and peer leadership who will be able to compete well internationally. The Graduate School of Life Science, University of Hyogo is implementing a LP to foster global leaders using cutting-edge technology. They are also trying to create new evaluation criteria of human resource development with their corporate sponsors. The success of LP depends not only on how many graduates can play leading roles globally, but also how university staff can create a superior new evaluation criteria of human resource development and how much it can be shared with universities and industry. Development of students and graduates with a high level of ability takes time, thus it is important to consider the continuous development of LP.

  14. Explanation of New Astronomical Distance Data Resulted From Measurements of Type Ia Supernovae Lies Not In Cosmological Constant and Accelerating Expansion; Rather, It Is Another Aspect/Effect of the General Exponential Decay Universe

    CERN Document Server

    Ellman, R

    2000-01-01

    Recently it has become possible to determine the distance to Type Ia supernovae by redshift-independent means. Those new distance determinations exceed the Hubble distance by 10 - 15%. The explanation others propose is that an "antigravity effect" is accelerating the universe' expansion, which had hitherto been thought to be slowing down because of gravitation. That has led to their proposing reinstatement of Einstein's "cosmological constant", a term in his equations introduced to account for gravitation not promptly collapsing the universe and which he disavowed upon Hubble's discovery of the expansion of the universe. And that has further led to their proposing some form of the Ancients' fifth essence, quintessence [the first four being earth, air, fire and water], to account for the "antigravity effect". Any "antigravity effect", regardless of its cause, would have the effect of counteracting ordinary gravitation. Inasmuch as one of the major current problems in cosmology is to identify more gravitation t...

  15. The University's Governance Paradox

    Science.gov (United States)

    Maassen, Peter

    2017-01-01

    One can observe a growing external pressure on universities to become more responsive to society through proactively engaging in various types of competition--competing for students, staff, external funding, and for academic prestige and status. The ensuing reform agendas aim at changing the intra-university governance structures for stimulating…

  16. Universal Usability

    Science.gov (United States)

    Horton, Sarah; Leventhal, Laura

    Universal usability of World Wide Web (Web) environments—that is, having 90% of households as successful users—requires universal access, usability, and universal design. Factors such as Web technology and user-centered design contribute to universal access and usability, but key to universal usability is a universal design methodology. Universal design principles for the Web follow from universal design principles for the built environment, and emphasize perceptibility, self-explanation, and tailorability for the user. Universally usable Web environments offer the benefit of expanded participation, as well as the unanticipated benefits that generally follow from innovative design initiatives. However, to achieve Web universal usability, Web designers need tools that facilitate the design of intuitive interfaces without sacrificing universal access.

  17. 基于关系理论的高校知识型人才管理策略%Management Strategy of Knowledge-type Talents in Universities Based on Relations Theory

    Institute of Scientific and Technical Information of China (English)

    康志荣

    2011-01-01

    高校知识型人才队伍是学校发展的主体,对教育事业的发展起着主导性作用,是高校核心竞争力的人力因素.文章在解析行为科学的人际关系理论的概念与作用基础上,结合高校知识型人才的特点,提出高校科学有效的管理措施,实现对知识型人才的柔性管理.%Knowledge-type talents in university are subject of school development. They play a dominant role in the development of educational cause, and to be human resources factor of core competence in universities. Based on concept and function of relations theory and combined with characteristics of knowledge-type talents in universities, the article proposes scientific and effective management measures to realize flexible management of knowledge-type talents.

  18. 新型高校智库发展研究%Research on the development of a new type of university think tank

    Institute of Scientific and Technical Information of China (English)

    林秀芬

    2016-01-01

    The think tank is an important feature of soft power. In recent years, with the rapid development of think tanks, University think tanks, which are based on development-oriented research and consulting local government decision-making have also been established. Review the background of the development process of University think tanks, focuses on the effectiveness, collaborative management and the development orientation of university think tanks, we want to find the ways to improve development of the new University think tanks.%智库是国家软实力的重要特征,近年来,随着我国智库的迅速发展,面向地方经济社会发展和政府决策咨询研究为主的高校智库也纷纷建立。回顾我国高校智库的发展历程及新型高校智库建设的背景,着重探讨当前高校智库发展所面临的效力发挥不足、协同管理不足、发展定位不清晰等困境,并结合上述困境提出建设新型高校智库发展的路径探索。

  19. Role of Leading Programs in Doctoral Education: A New Type of Leadership Education in the Sciences at University of Hyogo, Japan

    Science.gov (United States)

    Okamoto, Maya; Matsuzaka, Hiroshi

    2015-01-01

    Fostering global leaders for the next generation is an important mission of universities. In Japan, Leading Programs in Doctoral Education (LP) has been implemented in many graduate schools. The main goal of this program is to foster PhDs with deep specialization and peer leadership who will be able to compete well internationally. The Graduate…

  20. PREVALENCE OF HERPES SIMPLEX VIRUS TYPES 1 AND 2 AND ASSOCIATED SOCIODEMOGRAPHIC VARIABLES IN PREGNANT WOMEN ATTENDING KING FAHD HOSPITAL OF THE UNIVERSITY

    OpenAIRE

    Obeid, Obeid E.

    2007-01-01

    Objectives: The risk factors associated with herpes simplex virus (HSV) seropositivity in pregnant women in Saudi Arabia are not known. This study was aimed at identifying the sociodemographic variables associated with seroprevalence of HSV-1 and HSV-2 in pregnant women in a Saudi hospital. Materials and Methods: This is a hospital-based cross-sectional study that included all pregnant mothers who delivered at King Fahd Hospital of the University (KFHU) over a period of two years (Novembe...

  1. On the Teaching Practicum of Bilingual Education in Universities of Application Type%应用型本科专业双语教学实践探析

    Institute of Scientific and Technical Information of China (English)

    王西娅

    2011-01-01

    The increase of open-door policy and economic position of our country requires higher English level of students and teachers. At present, the bilingual education keeps rare in our country's universities. On the view of long-term development, based on the fact of this major situation and nowadays English level of students and teachers in private universities, the writer clears the objects of bilingual education, proposes the basic condition of bilingual education and suggestion that improve the bilingual education in private universities.%一直以来,我国高校应用型本科专业课堂教学主要采用母语教学,采用双语教学的高校和课程均为数很少。通过对高校应用型本科专业推行双语教学情况的研究,结合我国现代化建设对双语型人才的现实需求,提出了高校实施双语教学应确立的目标以及应具备的基本条件,同时提出了深化开展并逐步完善我国高校双语教学工作的建议。

  2. Universal Classification System Type of Incident Myocardial Infarction in Patients With Stable Atherosclerosis: Observations From Thrombin Receptor Antagonist in Secondary Prevention of Atherothrombotic Ischemic Events (TRA 2°P)-TIMI 50.

    Science.gov (United States)

    Kidd, Stephen K; Bonaca, Marc P; Braunwald, Eugene; De Ferrari, Gaetano M; Lewis, Basil S; Merlini, Piera A; Murphy, Sabina A; Scirica, Benjamin M; White, Harvey D; Morrow, David A

    2016-07-18

    Our dual aims were as follows: (1) to classify new or recurrent myocardial infarctions (MI) in patients with stable atherosclerosis using the Universal Definition of MI classification system; and (2) to characterize the effects of vorapaxar, a first-in-class platelet protease-activated receptor -1 antagonist, on new or recurrent MI. We analyzed data from TRA 2°P-TIMI 50, a multinational, randomized, double-blind, placebo-controlled trial of vorapaxar. This analysis included 20 770 patients with previous MI or peripheral arterial disease without a history of transient ischemic attack or stroke. Each new or recurrent MI after randomization that met the trial end point definition was further categorized according to the European Society of Cardiology, American College of Cardiology, American Heart Association, World Heart Federation Universal Definition classification of type and size. Of 1095 incident MIs, 77% were spontaneous (Type 1), with a smaller number (9.8%) of secondary MIs (Type 2). Vorapaxar reduced Type 1 MI (hazard ratio [HR] 0.84, CI 0.73-0.98, P=0.024), with a similar pattern for Type 2 MI (HR 0.74, CI 0.49-1.10, P=0.13). Notably, vorapaxar showed a consistent pattern of reduction across size of MIs, including MIs in the highest Universal MI size class (≥10× upper reference limit, HR 0.83, CI 0.70-0.98, P=0.025). As such, there was a significant reduction in larger, spontaneous MIs (Type 1, ≥10× upper reference limit, HR 0.81, CI 0.67-0.99, P=0.036), and a consistent pattern with respect to fatal MI (HR 0.66, CI 0.39-1.11, P=0.12). Among stable patients with established atherosclerosis, the most common type of incident MI is spontaneous MI, and the reduction in MI with vorapaxar was consistent across MIs of varying type and size, including spontaneous infarctions ≥10× upper reference limit. URL: https://www.clinicaltrials.gov. Unique identifier: NCT00526474. © 2016 The Authors. Published on behalf of the American Heart Association, Inc., by

  3. An annotated catalogue of the type material of Elateroidea Leach, 1815 (Coleoptera) deposited in the Coleoptera collection of the Museum of Zoology of the University of São Paulo, Brazil.

    Science.gov (United States)

    Ferreira, Vinicius De Souza

    2015-03-25

    The Museum of Zoology of the University of São Paulo (MZSP) houses one of the most important Coleoptera collections of Brazil and Neotropical Region with nearly 900,000 adult mounted material and about 1,500,000 specimens to be mounted. The superfamily Elateroidea Leach, 1815 (including Cantharoidea) comprises about 24,077 described species in 17 families. The MZSP owns type material of Brachypsectridae LeConte & Horn, 1883, Cantharidae, 1856 (1815), Cerophytidae Latreille, 1834, Elateridae Leach 1815, Eucnemidae Eschscholtz, 1829, Lampyridae Rafinesque, 1815, Lycidae Laporte, 1836, Phengodidae LeConte, 1861 and Rhinorhipidae Lawrence, 1988. This catalogue includes type material of 166 species distributed in 69 genera. Among 1,223 type specimens, are 86 holotypes, 1,133 paratypes, 2 allotypes, 1 lectotype and 1 paralectotype.

  4. Partition efficiencies of newly fabricated universal high-speed counter-current chromatograph for separation of two different types of sugar derivatives with organic-aqueous two-phase solvent systems.

    Science.gov (United States)

    Shinomiya, Kazufusa; Sato, Kazuki; Yoshida, Kazunori; Tokura, Koji; Maruyama, Hiroshi; Yanagidaira, Kazuhiro; Ito, Yoichiro

    2013-12-27

    A new design of universal high-speed counter-current chromatograph (HSCCC) was fabricated in our laboratory. It holds a set of four column holders symmetrically around the rotary frame at a distance of 11.2cm from the central axis. By engaging the stationary gear on the central axis of the centrifuge to the planetary gears on the column holder shaft through a set of idle gears, two pairs of diagonally located column holders simultaneously rotate about their own axes in the opposite directions: one forward (type-J planetary motion) and the other backward (type-I planetary motion) each synchronously with the revolution. Using the eccentric coil assembly, partition efficiencies produced by these two planetary motions were compared on the separation of two different types of sugar derivatives (4-methylumbelliferyl and 5-bromo-4-chloro-3-indoxyl sugar derivatives) using organic-aqueous two-phase solvent systems composed of n-hexane/ethyl acetate/1-butanol/methanol/water and aqueous 0.1M sodium tetraborate, respectively. With lower phase mobile, better peak resolution was obtained by the type-J forward rotation for both samples probably due to higher retention of the stationary phase. With upper phase mobile, however, similar peak resolutions were obtained between these two planetary motions for both sugar derivatives. The overall results indicate that the present universal HSCCC is useful for counter-current chromatographic separation since each planetary motion has its specific applications: e.g., vortex CCC by the type-I planetary motion and HSCCC by the type-J planetary motion both for separation of various natural and synthetic products.

  5. Zhejiang University

    Institute of Scientific and Technical Information of China (English)

    玄之

    2008-01-01

    In September 1998,a new Zhejiang University was established on the basis of the amalgamation of the four former individual universities,namely Zhejiang University,Hangzhou University,Zhejiang Agricultural University and Zhejiang Medical University,which were all located in the garden city of Hangzhou.Approved by the State Council,the founding of the new Zhejiang University has been a significant move in the reform and development of China’s higher education.The four universities have grown out of the same ancestry,the Qiushi(with the literal meaning of "seeking truth" in Chinese) Academy,which was founded a century ago as one of the earliest institutions of higher learning in China.As a result,they have all inherited from it the spirit of "Qiushi" and at the same time,built up their owndistinctive features in teaching and research.

  6. Fractal universe

    CERN Document Server

    Khokhlov, D L

    1999-01-01

    The model of the universe is considered in which background of the universe is not defined by the matter but is a priori specified as a homogenous and isotropic flat space. The scale factor of the universe follows the linear law. The scale of mass changes proportional to the scale factor. This leads to that the universe has the fractal structure with a power index of 2.

  7. University Internationalization and University Autonomy

    DEFF Research Database (Denmark)

    2016-01-01

    Turcan and Gulieva deepen our theoretical understanding of the process of university internationalisation by exploring the relationship between university internationalisation and university autonomy. They conjecture that the process of university internationalisation and its sustainability are d......, dissimilar, and sometimes conflicting dimensions of the financial, legal, organisational, staffing, and academic autonomy of the host country, are compromising key aspects of their own autonomy and core mission?...

  8. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 29 April 2009 PARTICLE PHYSICS SEMINAR at 17:00 - Stückelberg Auditorium Search for spin-1 excited bosons at the LHC Mihail V. Chizhov (Physics Department, Sofia University, Bulgaria) I will discuss the resonance production of new type spin-1 excited bosons, Z*, at hadron colliders. They can be observed as a Breit-Wigner resonance peak in the invariant dilepton mass distribution in the same way as the well-known hypothetical gauge bosons, Z�. This makes them very interesting objects for early searches with the LHC first data. Moreover, they have unique signatures in transverse momentum and angular distributions, which allow to distinguish them from other resonances. Information : http://dpnc.unige.ch/seminaire/annonce.html Organizer: J.-S. Graulich

  9. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 Genève 4 Tél. 022 379 62 73 - Fax: (022) 379 69 92 Wednesday 14 October 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Long-lived particle searches at colliders Dr. Philippe Mermod / Oxford University The discovery of exotic long-lived particles would address a number of important questions in modern physics such as the origin and composition of dark matter and the unification of the fundamental forces. This talk will focus on searches for long-lived charged massive particles, where "charged" refers to the magnetic, electric or colour charge. Previous searches at the LEP and Tevatron Colliders allowed to put mass and cross section limits on various kinds of long-lived particles, such as Magnetic Monopoles and metastable leptons and up-type quarks. The new energy regime made available at the LHC will probe physics regions well beyond these limits. F...

  10. An annotated catalogue of Recent Pectinoidea (Mollusca, Pectinidae and Propeamussiidae) type material in the Museum of Natural History, Humboldt University, Berlin

    NARCIS (Netherlands)

    Dijkstra, H.H.; Köhler, F.

    2008-01-01

    This paper lists 22 pectinoid types (21 primary and one secondary) and three potential syntypes in the Museum of Natural History (ZMB) in Berlin. Eight lectotypes are designated herein for the stabilization of taxonomic names: Pecten aequatorialis, Pecten australis, Pecten clathratus, Camptonectes g

  11. An Identification and Evaluation of the Various Types and Forms of Personal Relationships within a Sino Foreign University Strategic Alliance Context

    Science.gov (United States)

    Willis, Mike

    2008-01-01

    This article identifies a range of personal relationships observable in Sino foreign strategic alliances. Guanxi relationships remained the key to a successful alliance; and encompassed various levels, stages, and dimensions--making them complex and changeable forms of human behavior. Other types of relationships identified included "basic…

  12. 复合型组织化机制:基于高校社团的经验研究%Multi-type Organizing Mechanism:An Empirical Research Based on University Organizations

    Institute of Scientific and Technical Information of China (English)

    宿丹; 陈莹骄; 董晓雯; 赵孟营

    2014-01-01

    从组织化的理论出发,指出准组织通过在已具备的两个组织要素的基础上发展第三要素的过程使组织从准组织化状态向组织化状态转变。以大学生公益社团这一类"周期性空转"的准组织为例,从组织吸引、组织赋权、组织嵌合三个环节的组织化过程,提出发展型、价值型、人际关系型和依赖型四个类型的复合型组织化机制。%Starting from the theory of organizing,the authors of this paper point out the process in which a quasi-organization with two basic elements develops the Third Element so that the quasi-organization transforms to an organized state. Taking university nonprofit organization ,the quasi-organization facing dilemma of "cyclical idling",as example the authors studied the processes of "organizational attraction","organizational empowerment","organizational matching" and put forward four kinds of multi-type organizing mechanism which consists of development-type,value-type,relationship-type and dependence-type.

  13. Universal HbA1c Measurement in Early Pregnancy to Detect Type 2 Diabetes Reduces Ethnic Disparities in Antenatal Diabetes Screening: A Population-Based Observational Study.

    Directory of Open Access Journals (Sweden)

    R C E Hughes

    Full Text Available In response to the type 2 diabetes epidemic, measuring HbA1c with the first-antenatal blood screen was recently recommended in NZ. This would enable prompt treatment of women with unrecognised type 2 diabetes, who may otherwise go undetected until the gestational diabetes (GDM screen. We compare inter-ethnic antenatal screening practices to examine whether the HbA1c test would be accessed by ethnicities most at risk of diabetes, and we determined the prevalence of unrecognised type 2 diabetes and prediabetes in our pregnant population. This is an observational study of pregnancies in Christchurch NZ during 2008-2010. Utilising electronic databases, we matched maternal characteristics to first-antenatal bloods, HbA1c, and GDM screens (glucose challenge tests and oral glucose tolerance tests. Overall uptake of the first-antenatal bloods versus GDM screening was 83.1% and 53.8% respectively in 11,580 pregnancies. GDM screening was lowest in Māori 39.3%, incidence proportion ratio (IPR 0.77 (0.71, 0.84 compared with Europeans. By including HbA1c with the first-antenatal bloods, the number screened for diabetes increases by 28.5% in Europeans, 40.0% in Māori, 28.1% in Pacific People, and 26.7% in 'Others' (majority of Asian descent. The combined prevalence of unrecognised type 2 diabetes and prediabetes by NZ criteria, HbA1c ≥5.9% (41mmol/mol, was 2.1% in Europeans, Māori 4.7% IPR 2.59 (1.71, 3.93, Pacific People 9.5% IPR 4.76 (3.10, 7.30, and 'Others' 6.2% IPR 2.99 (2.19, 4.07. Applying these prevalence data to 2013 NZ national births data, routine antenatal HbA1c testing could have identified type 2 diabetes in 0.44% and prediabetes in 3.96% of women. Routine HbA1c measurement in early pregnancy is an ideal screening opportunity, particularly benefitting vulnerable groups, reducing ethnic disparities in antenatal diabetes screening. This approach is likely to have world-wide relevance and applicability. Further research is underway to

  14. THE TYPES OF COMMUNICATION STRATEGIES USED BY SPEAKING CLASS STUDENTS WITH DIFFERENT COMMUNICATION APPREHENSION LEVELS IN ENGLISH DEPARTMENT OF PETRA CHRISTIAN UNIVERSITY, SURABAYA

    Directory of Open Access Journals (Sweden)

    Agatha Sylvia

    2004-01-01

    Full Text Available This article reports on a study that aims to find out the types of Communication Strategies used and mostly used by students with high and low levels of Communication Apprehension and whether students with high level of Communication Apprehension used more numbers of Communication Strategies. The subjects in a created classroom were asked to retell a pictorial story and a pictorial instruction. The results showed that students with high Communication Apprehension level used more numbers of Communication Strategies.

  15. Seroprevalence and correlates of human T-cell lymphoma/leukemia virus type 1 antibodies among pregnant women at the University of Nigeria Teaching Hospital, Enugu, Nigeria

    Directory of Open Access Journals (Sweden)

    Okoye AE

    2014-09-01

    Full Text Available Augustine Ejike Okoye,1 Obike Godswill Ibegbulam,2 Robinson Chukwudi Onoh,3 Paul Olisaemeka Ezeonu,3 Ngozi I Ugwu,1 Lucky Osaheni Lawani,3 Chukwudi Simon Anigbo,2 Charles E Nonyelu21Department of Haematology and Immunology, Federal Teaching Hospital, Abakaliki, 2Department of Haematology and Immunology, University of Nigeria Teaching Hospital (UNTH, Ituku-Ozalla, 3Department of Obstetrics and Gynaecology, Federal Teaching Hospital, Abakaliki, NigeriaBackground: Human T-cell lymphoma/leukemia virus (HTLV-1 is a retrovirus transmitted vertically from mother to child parenterally and sexually by infected lymphocytes.Objective: The objective of this study was to determine the seroprevalence of HTLV-1 antibodies and associated risk factors for HTLV-1 infection among pregnant women in University of Nigeria Teaching Hospital, Enugu, southeast Nigeria.Materials and methods: A cross-sectional study was carried out from July to October 2010. Two hundred pregnant women were recruited consecutively from the antenatal clinic. Five milliliters of blood was collected from each of the participants into a plain sterile bottle and allowed to clot. The serum obtained was stored at -20°C until required for analysis. The serum samples were then analyzed for antibodies to HTLV-1 using a one-step incubation double-antigen sandwich enzyme-linked immunosorbent assay kit. Participants' demographic characteristics and degree of exposure to the risk factors associated with HTLV-1 infection were captured using a questionnaire. Statistical analysis of results was done using SPSS version 17.Results: The average age of the pregnant women was 28.94 years (standard deviation 4.17. The age-group with the highest representation was those between the ages of 26 and 30 years. Thirty-six percent of the population was above 30 years old. The result of the tests showed that only one respondent, a 31-year-old pregnant woman tested positive for HTLV-1 antibodies. Therefore, the

  16. Knowledge of and attitude to foot care amongst Type 2 diabetes patients attending a university-based primary care clinic in Nigeria

    Directory of Open Access Journals (Sweden)

    Rabi I. Ekore

    2010-03-01

    Full Text Available Background: Individuals living with diabetes mellitus are at an increased risk of developing foot ulcers and cardiovascular complications or a neuropathy that may result in amputations. These complications have been shown to be already present in about 10% of diabetic patients at the time of diagnosis.Objectives: This study was carried out to determine the level of awareness and attitude to foot care among adult diabetic patients attending a university health centre (i.e. a primary care centre and to emphasise the ever-present need for health education and promotion and early complication detection (especially of foot problems among diabetic patients.Method: A descriptive cross-sectional, clinic-based study was carried out at the University of Ibadan Health Centre (Jaja Clinic. The study population consisted of consenting adult diabetic patients. Data were collected by the self-administration of structured questionnaires to eligible subjects and were analysed using the SPSS v.15software. Appropriate statistics were employed to analyse the collected data.Results: A total of 137 patients participated in the study and ranged in age from 37 to 75 years, with the mean ± SD age being 58.2 ± 9.2 years. Of the participants, 98 (71.5% were men and 39 (28.5%were women; all of the participants were married. The duration of illness ranged from 1 year to 20 years, with the median duration of illness being 3 ± 1.7 years. One hundred and twenty-six (92%patients had never received any education on foot care from their healthcare providers, while 11(8% had received some form of foot care education. Among those who had never received any foot care education, 92 (73% had been diabetic for 1–5 years, while the remaining 34 (27% had been diabetic for 6 – 20 years. Of the foot care measures that were known, 35 (25.5% patients knew to wash their feet daily and dry in between the toes thoroughly, 31 (22.6% knew not to go outdoors barefooted, 27 (19.7% checked

  17. OXA- and GES-type β-lactamases predominate in extensively drug-resistant Acinetobacter baumannii isolates from a Turkish University Hospital.

    Science.gov (United States)

    Cicek, A C; Saral, A; Iraz, M; Ceylan, A; Duzgun, A O; Peleg, A Y; Sandalli, C

    2014-05-01

    We determined the antibiotic susceptibility and genetic mechanisms of resistance in clinical strains of Acinetobacter baumannii from Istanbul, Turkey. A total of 101 clinical strains were collected between November 2011 and July 2012. Antimicrobial susceptibility was performed using the Vitek 2 Compact system and E-test. Multiplex PCR was used for detecting bla(OXA -51-like), bla(OXA -23-like), bla(OXA -40-like) and bla(OXA -58-like) genes. ISAba1, bla(IMP -like), bla(VIM -like), bla(GES), bla(VEB), bla(PER -2), aac-3-Ia and aac-6'-Ib and NDM-1 genes were detected by PCR and sequencing. By multiplex PCR, all strains were positive for bla(OXA -51), 79 strains carried bla(OXA -23) and one strain carried bla(OXA -40). bla(OXA -51) and bla(OXA -23) were found together in 79 strains. ISAba1 element was detected in 81 strains, and in all cases it was found upstream of blaOXA -51 . GES-type carbapenemases were found in 24 strains (GES-11 in 16 strains and GES-22 in 8 strains) while bla(PER -2), bla(VEB -1), bla(NDM -1), blaIMP - and blaVIM -type carbapenemases were not observed. Aminoglycoside modifying enzyme (aac-3-Ia and aac-6'Ib) genes were detected in 13 and 15 strains, respectively. Ninety-seven (96%) A. baumannii strains were defined as MDR and of these, 98% were extensively drug resistant (sensitive only to colistin). Colistin remains the only active compound against all clinical strains. As seen in other regions, OXA-type carbapenemases, with or without an upstream ISAba1, predominate but GES-type carbapenemases also appear to have a significant presence. REP-PCR analysis was performed for molecular typing and all strains were collected into 12 different groups. To our knowledge, this is the first report of GES-11 and OXA-40 in A. baumannii from Turkey.

  18. Stanford University

    Institute of Scientific and Technical Information of China (English)

    李琳

    2007-01-01

    The Leland Stanford Junior University,commonly known as Stanford University (or simply Stanford),is a private university located approximately 37 miles (60 kilometers) southeast of San Francisco and approximately 20 miles northwest of San Joséin an unincorporated area of Santa Clara County.Situated adjacent to the city of Palo Alto,California,Stanford lies at the heart of the Silicon Valley,both geographically and historically.

  19. Harvard University

    Institute of Scientific and Technical Information of China (English)

    李琳

    2007-01-01

    Harvard University, which celebrated its 370th anniversary in 2006, is the oldest institution of higher learning in the United States. Founded 16 years after the arrival of the Pilgrims at Plymouth, the University has grown from nine students with a

  20. Overseas Universities.

    Science.gov (United States)

    Inter-University Council for Higher Education Overseas, London (England).

    The following articles and reports are presented in this publication of "Overseas Universities:""Appropriate Technology and University Education," by John Twidell; "The Training of Engineering Staff for Higher Education Institutions in Developing Countries," by D. W. Daniel, C. A. Leal, J. H. Maynes and T. Wilmore;…

  1. Innovative Universities.

    Science.gov (United States)

    Barsi, Louis M.; Kaebnick, Gweneth W.

    1989-01-01

    The phenomenon of innovation within the university is examined, noting the possibility of innovation as a key to college vitality. A study was conducted using a group of institutions that demonstrated recent innovative spirit. Members of the American Association of State Colleges and Universities (AASCU), each has been recognized in an annual…

  2. Research and practice of the order type training pattern based on university-enterprise cooperation group%基于校企合作群的订单培养模式研究与实践

    Institute of Scientific and Technical Information of China (English)

    姜金堂

    2015-01-01

    At the beginning of the 21st century, the order type training pattern was a new University-enterprise cooperation Talent training mode. The order type training pattern is also called“talent customization”, it is clear for employment, aim to the work post of the employment to training ability, improve the personnel training‘s pertinence and practical. This talent training mode can achieving schools, employers and students all win. But because of the operation and management, teaching resources and other aspects of personnel needs to limit, the order type training pattern can’t often achieve the desired effect. In this paper, Starting from the innovation order training mode, in the way of University-enterprise Cooperation Group to expand cooperation areas, in order to solve the“Cooperation difficult”problem.%“订单培养”是21世纪初在职业院校中出现的一种新型的校企合作人才培养形式,订单式培养也叫“人才定制”,是明确就业去向、针对就业岗位的工作能力培训,提高了人才培养的针对性和实用性,实现学校、用人单位与学生的“三赢”。但是,由于受运行管理、教学资源、人才需求等方面的限制,往往“订单培养”无法达到预期效果。文章从创新订单培养模式着手,以校企合作群的方式扩大合作领域,解决“合作难”的问题。

  3. Type and Concentration of Bioaerosols in the Operating Room of Educational Hospitals of Hamadan University of Medical Sciences and Effectiveness of Ventilation Systems, in Year 2004

    Directory of Open Access Journals (Sweden)

    F. Ghorbani Shahna

    2006-07-01

    Full Text Available Introduction & Objective: The bioaerosol is one of the operating room(OR hazards that can be threaten of personel health and capable to creating of postoperetive infection in the patients. Because of the hospital infection rate has correleted to bioaerosol concentration, therefore, it is important to determine of type and concentration of these microorganisms as the main goal of this study. Materials and Methods: In this research, 23 operation rooms in the 4 educational hospitals of the Hamadan City were studied. 115 air samples were collected in the various locations and conditions according to filtration method suggested by bioaerosol committee of ACGIH. The samples were transported to blood agar and cultivated immediatedly. The type and number of colonies were determined in the laberatory then, the bioaerosol concentration were calculated in terms of cfu/m3. The data of physical conditions of ORs , ventilation specifications and other environmental parameters have been recorded in the work sheet.Results: The results have demonstrated that the mean of total bioaerosol and pathogen bioaerosol concentration were 136 cfu/m3 and 4.01 cfu/m3 respectively. The concentration of 25.3% of the total pathogen samples be exceeded of recommended limit. It is apeared that have been correlation between concentration of bioaerosols and duration of surgry (P<0.05, also the concentration of morninig shift were higher than the other shifts(P<0.05.Conclusion: According to the detected bioaerosols pathogens in the samples, high cleaning class in the operating rooms is necessary. It is necessary to design and administrate the ventilation systems according to standards because of the absence of appropriate ventilation system in the three hospitals of four investigated hospitals.

  4. Universe Awareness

    Science.gov (United States)

    Sankatsing Nava, Tibisay; Russo, Pedro

    2015-08-01

    Universe Awareness (UNAWE) is an educational programme coordinated by Leiden University that uses the beauty and grandeur of the Universe to encourage young children, particularly those from an underprivileged background, to have an interest in science and technology and foster their sense of global citizenship from the earliest age.UNAWE's twofold vision uses our Universe to inspire and motivate very young children: the excitement of the Universe provides an exciting introduction to science and technology, while the vastness and beauty of the Universe helps broaden the mind and stimulate a sense of global citizenship and tolerance. UNAWE's goals are accomplished through four main activities: the coordination of a global network of more than 1000 astronomers, teachers and educators from more than 60 countries, development of educational resources, teacher training activities and evaluation of educational activities.Between 2011 and 2013, EU-UNAWE, the European branch of UNAWE, was funded by the European Commission to implement a project in 5 EU countries and South Africa. This project has been concluded successfully. Since then, the global project Universe Awareness has continued to grow with an expanding international network, new educational resources and teacher trainings and a planned International Workshop in collaboration with ESA in October 2015, among other activities.

  5. 3D CLOTHING MANNEQUIN GENERATION BASED ON UNIVERSAL-TYPE HUMAN BODY TEMPLATE DATABASE%基于通用型人体模板数据库的三维服装人台生成

    Institute of Scientific and Technical Information of China (English)

    施霞萍; 陈利杰

    2013-01-01

    In light of the inadequate support of existing clothing body modelling method on nonstandard human bodies , in this paper we propose a modelling method for universal-type 3D clothing mannequin modelling .On the basis of analysing existing scanned 3D data of standard and nonstandard human bodies , we establish a universal-type human body template database and the correspondent automatic selection algorithm through defining the feature parameters suitable for universal-type human bodies so as to solve the problem of modelling distortion in nonstandard human bodies .Template matching algorithm is used to extract similar parts , after the curve fitting and interpolation processing , the human body model is generated .Experiment results shows that the use of this method effectively resolves the distortion problem in nonstandard human body modelling , the human bodies established with both standard and nonstandard body sizes gain noticeable improvement on speed and accuracy , this lays a foundation for the popularisation and application of eMTM .%针对现有服装人体建模方法中对非标准人体的支持不力,提出通用型三维服装人台的建模方法。在分析已有的标准和非标准人体的三维扫描数据基础上,通过定义适用于通用型人体特征参数,建立通用型人体模板数据库和相应的自动选取算法以解决非标准人体建模失真问题。由模板匹配算法从中提取相似部件进行曲线拟合插值处理后生成人体模型。实验结果表明,利用该方法有效地解决了非标准体型人体建模失真问题,并且所建立的标准和非标准体型人体在速度和精度上都得到明显的提高,为eMTM( electronic Made To Measure )的普及应用奠定基础。

  6. The universe

    CERN Document Server

    Osborne, Richard

    2012-01-01

    Where did the Universe come from? The single biggest and most difficult question that there is. From early religions through Greek Philosophy and Western Science man has attempted to discover the meaning of our place in the Universe. In the last twenty years these debates have been cast in a new light by amazing discoveries, big bang theory and ideas about new sub-atomic layers. The nature of Time and Space are truly up for grabs. With a witty and accessible style Osborne leads us on a historical and informative journey through the philosophies of the universe including the importance

  7. A Study On The Frequency Of Different Types Of Optical Low Vision Aids Prescribed For Low Vision Patients Examined In The Clinic Of Optometry, Faculty Of Rehabilitation Sciences Shahid Beheshti University Of Medical Sciences, Tehran, 1387

    Directory of Open Access Journals (Sweden)

    Mohammad Ghassemi Broumand

    2012-04-01

    Full Text Available Background and Aim: Different diseases can be the cause of low vision. In the case of low vision, visual acuity with conventional optical devices such as glasses and contact lenses is between” 20/70 to 20/200”. To improve the visual performance in these patients, low vision aids are prescribed.The types of prescribed low vision aids vary in different diseases. The purpose of this study is to determine the type and frequency of optical aids prescribed for low vision patients examined in optometry clinic of Rehabilitation faculty of shahid Beheshti University in 1387. Materials and Methods: In this retrospective cross-sectional study, 204 low vision patients went under investigation. In the present study variables including type and rate of refractive error, visual acuity with the best correction, type of diseases and type of prescribed optical low vision aids were investigated.Results: The frequency of prescribed distance glasses in diabetic retinopathy was 97%, age related macular degeneration 86.2%, Stargarts 92%, retinitis pigmentosa 86.4% and albinism 88.2%, Also the frequency of prescribed microscope in diabetic retinopathy was 81.82% , age related macular degeneration 48.27%, Stargarts 40% , retinitis pigmentosa 35.3% , albinism 35.3% and the frequency of prescribed magnifier in diabetic retinopathy was18.18%, age related macular degeneration 24.12% , Stargarts 52%, retinitis pigmentosa18.18% and albinism 29.4%.Conclusion: In many low vision conditions, it is more suitable to prescribe distance glasses rather than telescope. In this study the distance glass with the frequency of 84.8% is seen more acceptable in comparison with the telescope with the frequency of 41.7%. Among near optical low vision aids, microscope with the frequency of 50.5% is more accepted by the patients compared to magnifier with the frequency of 26% and CCTV with the frequency of 0.50%.

  8. The Cultivation of Application-type Talents in University Based on the Concept of Liberal Education%基于自由教育理念的大学应用人才培养

    Institute of Scientific and Technical Information of China (English)

    彭道林; 钟小龙

    2015-01-01

    Liberal education is an educational concept with extremely long history. After being challenged by several kinds of theories, it is now still widely applied in educational, especially higher educational practices. The reason why liberal education possesses such a long-lasting life,is because it conforms to the internal logic of university education and the pursuing of self liberty and distillation of human beings. The cultivation of application-type talents in university, which is actively discussed in higher educational academic world currently, is after all an activity in the university campus. It is therefore undoubtedly beneficial if it is studied in the scope of liberal education.%自由教育是一种有着非常悠久历史的教育理念,在经历了各种挑战之后,至今仍与教育,尤其是大学教育相依相伴.自由教育之所以有如此旺盛的生命力,与其符合大学的内在逻辑,符合人类永恒地追求自身的解放和升华是分不开的.目前我国高等教育界所热议的大学应用人才培养,毕竟是在大学里所进行的教育,若是能站在自由教育的高度来研究,无疑将是十分有益的.

  9. Sustainable Universities

    DEFF Research Database (Denmark)

    Grindsted, Thomas Skou

    2011-01-01

    , has put a counter pressure on the university, forcing it to review its role as a driver for sustainable development. Today, universities and intergovernmental institutions have developed more than 31 SHE declarations, and more than 1400 universities have signed a SHE declaration globally. However....... Declarations tend to have impact on three trends. Firstly, there is emerging international consensus on the university’s role and function in relation to sustainable development; secondly, the emergence of national legislation, and thirdly, an emerging international competition to be leader in sustainable......Declarations on Sustainability in Higher Education (SHE) can be viewed as a piece of international regulation. Over the past 30 years research at universities has produced convincing data to warn about deterioration of the environment, resource scarcity and the need for sustainability. This in turn...

  10. USAID University

    Data.gov (United States)

    US Agency for International Development — USAID University is USAID's learning management system. Features include 1) Access online courses 2) Register for instructor-led courses 3)Access your student...

  11. Undulant Universe

    Energy Technology Data Exchange (ETDEWEB)

    Barenboim, Gabriela; /Valencia U.; Mena, Olga; Quigg, Chris; /Fermilab

    2004-12-01

    If the equation of state for ''dark energy'' varies periodically, the expansion of the Universe may have undergone alternating eras of acceleration and deceleration. We examine a specific form that survives existing observational tests, does not single out the present state of the Universe as exceptional, and suggests a future much like the matter-dominated past: a smooth expansion without a final inflationary epoch.

  12. SWOT Analysis of the“1 +X” Menu Type Teaching under the Background of Constructing Application-oriented Universities%大学英语“1+X 菜单式教学”的 SWOT 研究

    Institute of Scientific and Technical Information of China (English)

    亢莉

    2016-01-01

    Constructing application -oriented universities conforms to the development of the current educational reform in an attempt to cultivate international senior talents in line with international standards and needs .In this paper, by using the marketing SWOT analysis, the author analyzed the pros and cons of the“1 +X”menu type teaching under the background of constructing application-oriented universi-ties, and put forward some suggestions on improving the model, forming positive attitudes and strengthening the faculty force and so on.%建设应用型大学是顺应我国高等教育改革发展和培养国际化高级人才的现实需要。借助营销学的SWOT分析法对当前大学英语“1+X菜单式教学”进行了分析,提出了改进教学模式、以应用为抓手和加强师资力量等建议。

  13. Gravitational Baryogenesis in Anisotropic Universe

    CERN Document Server

    Saaidi, Kh

    2010-01-01

    The interaction between Ricci scalar curvature and the baryon number current, dynamically breaks CPT in an expanding universe and leads to baryon asymmetry. Using this kind of interaction and study the gravitational baryogenesis in the Bianchi type I universe. We find out the effect of anisotropy of the universe on the baryon asymmetry for the case which the equation of state parameter, $\\omega$, is dependent to time.

  14. The Universe With Bulk Viscosity

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Exact solutions for a model with variable G, A and bulk viscosity areobtained. Inflationary solutions with constant (de Sitter-type) and variable energydensity are found. An expanding anisotropic universe is found to isotropize duringits expansion but a static universe cannot isotropize. The gravitational constant isfound to increase with time and the cosmological constant decreases with time asAo∝t-2.

  15. University contracts summary book

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-08-01

    The principal objectives of the Fossil Energy Program are to seek new ideas, new data, fundamental knowledge that will support the ongoing programs, and new processes to better utilize the nation's fossil energy resources with greater efficiency and environmental acceptability. Toward this end, the Department of Energy supports research projects conducted by universities and colleges to: Ensure a foundation for innovative technology through the use of the capabilities and talents in our academic institutions; provide an effective, two-way channel of communication between the Department of Energy and the academic community; and ensure that trained technical manpower is developed to carry out basic and applied research in support of DOE's mission. Fossil Energy's university activities emphasize the type of research that universities can do best - research to explore the potential of novel process concepts, develop innovative methods and materials for improving existing processes, and obtain fundamental information on the structure of coal and mechanisms of reactions of coal, shale oil, and other fossil energy sources. University programs are managed by different Fossil Energy technical groups; the individual projects are described in greater detail in this book. It is clear that a number of research areas related to the DOE Fossil Energy Program have been appropriate for university involvement, and that, with support from DOE, university scientific and technical expertise can be expected to continue to play a significant role in the advancement of fossil energy technology in the years to come.

  16. New Universities

    Science.gov (United States)

    Burgett, Bruce

    2011-01-01

    The public-private alliance signals a future in which self-serving agreements could become the coin of the realm. Such a future would be a betrayal of the historical promise of public universities to innovate in ways that expand access to higher education. Given the rise of market-based models in educational policy circles, the threat of the…

  17. UNIVERSITY STUDENTS

    African Journals Online (AJOL)

    HIV/AIDS PERCEPTION AND SEXUAL BEHAVIOUR AMONG NIGERIAN. UNIVERSITY .... DO not like 118111511 _ 49 55 '1 Giving them money for treatment 21 3.7. Not available ... fact of the presence of the disease in the country. Whereas ...

  18. Princeton University

    Institute of Scientific and Technical Information of China (English)

    榕榕

    2007-01-01

    Recognized globally for academic excellence, Princeton University is a vibrant community of scholarship and learning. Princeton provides an academic and social setting where students quickly can become active members of the campus community. From the first day of class to Commencement, the opportunities for personal growth are countless.

  19. Virtual university governance.

    Science.gov (United States)

    Hovenga, Evelyn J S

    2004-01-01

    There is a need to establish collaboration alliances or partnerships if we are to provide global Health Informatics educatics education. Agreements need to make provision for the existing diversity between country educational systems as well as variations in funding, legislation and political systems and a number of other issues including intellectual property and copyright. Four virtual University governance models were identified, 1) evolution of existing universities, 2) newly created organisations collectively delivering one type of program eg MBA, 3) a consortium of partners using a common portal and 4) a commercial enterprise. Collectively IMIA academic members need to be in a good position to respond to the global changes in higher education and minimise the risk of failure when establishing a virtual University to collectively deliver Health Informatics education. Others have undertaken a similar path in the past, some successful others not so, we need to learn from these experiences.

  20. El envejecimiento, la asignatura olvidada en la universidad española: ¿El iceberg de un tipo de negligencia? Ageing, the forgotten course in Spanish university: the iceberg type of negligence?

    Directory of Open Access Journals (Sweden)

    M.ª del Carmen Jiménez Díaz

    2011-03-01

    Full Text Available El envejecimiento poblacional ha condicionado que la mayor parte de la actividad profesional de numerosos titulados de diferentes carreras se realice en personas ancianas. En su vertiente no intencional, el abandono del anciano como tipo de maltrato se puede deber a un conocimiento inadecuado (tal y como se define la impericia profesional. Por ello, la etapa de formación de la carrera reviste gran importancia en el cumplimiento de la misión universitaria. Así, todos los profesionales que desarrollen su actividad profesional con mayores deben tener conocimientos en gerontología que les permitan obtener, en cada momento, los mejores resultados posibles. Metodología: análisis descriptivo de los planes de estudio de las carreras de Enfermería, Medicina, Fisioterapia, Trabajo Social, Terapia Ocupacional y Ciencias de la Actividad Física y el Deporte. Conclusiones: excepto en Enfermería y Terapia Ocupacional, el resto de titulaciones universitarias no ofertan asignaturas troncales relacionadas con el envejecimiento.Population aging has conditioned most of the professional activity of many graduates of different degrees, to be conducted in older people. In its unintended side, abandoning the elderly, such as type of abuse, may be due to inadequate knowledge (defined as the professional skill, so the training stage of the race of great importance in meeting the university mission. Thus, all the professionals who develop their professional activity with older should have knowledge in gerontology to enable them to obtain at each moment the best possible results. Methodology: descriptive analysis of the curricula of degree programs in Nursing, Medicine, Physiotherapy, Social Work, Occupational Therapy and Science of Physical Activity and Sport. Conclusions: except in Nursing and Occupational Therapy, the other university degrees offered no core subjects related to aging.

  1. An investigation survey on migraine and tension-type headache among undergraduates from Guangzhou Medical University%广州医科大学本科生偏头痛及紧张型头痛的调查

    Institute of Scientific and Technical Information of China (English)

    向慧; 潘英; 李现亮; 廖伟峰; 潘泽林; 张少填; 魏佳娜

    2016-01-01

    目的:分析广州医科大学本科生偏头痛和紧张型头痛负担情况及二者之间分布的差异。方法:2014年12月1日至2015年3月1日,采取横断面调查的方法,以WHO头痛问卷、HIT-6评分量表、焦虑抑郁自评量表( SAS/SDS)、匹兹堡睡眠质量指数( PSQI)对广州医科大学6812名学生中随机抽取的900名本科生进行调查。结果:818名学生完成调查,应答率为90.8%。偏头痛患病率23.9%,紧张型头痛24.6%,偏头痛伴睡眠障碍为77.0%,紧张型头痛伴睡眠障碍占66.3%,偏头痛伴焦虑、抑郁分别为23.5%、39.8%,紧张型头痛伴焦虑、抑郁分别为17.3%、35.1%。二者的分布仅家族史、合并睡眠障碍及HIT-6评分方面差异有统计学意义( P<0.05)。结论:偏头痛和紧张性头痛在样本人群中的患病率高。两种头痛仅在家族史、HIT-6评分及伴睡眠障碍的分布存在显著差异。%Objective:To investigate the burden of migraine and tension-type headache among undergraduates from Guangzhou Medical University,and the difference in score domains between the both. Methods:Between December 1 of 2014 and March 1 of 2015,a cross-sectional survey was conducted using the WHO headache questionnaire,HIT-6 scale,self-rating anxiety and depression scales( SAS/SDS)and Pittsburgh Sleep Quality index(PSQI),among a randomly selected cohort(n = 900)of 6812 undergraduates from Guangzhou Medical University. Results:In total,818 students completed the survey,yielding a response rate of 90.8%. The overall prevalence of migraine was 23.9% vs 24.6% for tension-type headache. Sleep disorders were noted in 77% of subjects with migraine,and in 66. 3% of subjects with tension-type headache. In subjects with migraine,the rates of anxiety and depression were 23. 5% and 39. 8%,respectively,compared with 17. 3% and 35. 1% in subjects with tension-type headache. As regard to distribution of score domains,the two

  2. University student gambling consumption

    OpenAIRE

    2007-01-01

    Mestrado em Marketing The present research analysed gambling activity of college students from a consumer behaviour perspective in order assess their gambling behaviour. A questionnaire was administered to 216 college students from several courses in different universities in the city of Lisbon (Portugal). No significant differences were found between men and women in gambling activity , both for players and non-players in all the types of games analysed (lottery, bingo and casino). Even t...

  3. University writing

    Directory of Open Access Journals (Sweden)

    Miguel Zabalza Beraza

    2013-01-01

    Full Text Available Writing in the University is a basic necessity and a long-range educational purpose. One of the basic characteristics of the university context is that it requires writing both as a tool of communication and as a source of intellectual stimulation. After establishing the basic features of academic writing, this article analyzes the role of writing for students (writing to learn and for teachers (write to plan, to reflect, to document what has been done. The article also discusses the contributions of writing for both students and teachers together: writing to investigate. Finally, going beyond what writing is as academic tool, we conclude with a more playful and creative position: writing for pleasure and enjoyment.

  4. University physics

    CERN Document Server

    Arfken, George

    1984-01-01

    University Physics provides an authoritative treatment of physics. This book discusses the linear motion with constant acceleration; addition and subtraction of vectors; uniform circular motion and simple harmonic motion; and electrostatic energy of a charged capacitor. The behavior of materials in a non-uniform magnetic field; application of Kirchhoff's junction rule; Lorentz transformations; and Bernoulli's equation are also deliberated. This text likewise covers the speed of electromagnetic waves; origins of quantum physics; neutron activation analysis; and interference of light. This publi

  5. University lobbying

    Science.gov (United States)

    Richman, Barbara T.

    In the past year, an increasing number of individual academic institutions have lobbied in Congress for new science facilities funds thus circumventing the traditional peer review process of evaluating the merits of such facilities. As an attempt to stem this rising tide, the National Academy of Sciences (NAS) governing council and the Association of American Universities (AAU) recently and independently issued strong statements condemning lobbying by individual universities and enthusiastically supporting the peer review system.“Informed peer judgments on the scientific merits of specific proposals, in open competition, should be a central element in the awarding of all federal funds for science,” the NAS resolution stated. AAU, meanwhile, implored “scientists, leaders of America's universities, and members of Congress” to “refrain from actions that would make scientific decisions a test of political influence rather than a judgment on the quality of the work to be done.” Roughly 50 research institutions constitute AAU; the two AAU Canadian members did not vote on the consortium's statement.

  6. Human universe

    CERN Document Server

    Cox, Brian

    2014-01-01

    Human life is a staggeringly strange thing. On the surface of a ball of rock falling around a nuclear fireball in the blackness of a vacuum the laws of nature conspired to create a naked ape that can look up at the stars and wonder where it came from. What is a human being? Objectively, nothing of consequence. Particles of dust in an infinite arena, present for an instant in eternity. Clumps of atoms in a universe with more galaxies than people. And yet a human being is necessary for the question itself to exist, and the presence of a question in the universe - any question - is the most wonderful thing. Questions require minds, and minds bring meaning. What is meaning? I don't know, except that the universe and every pointless speck inside it means something to me. I am astonished by the existence of a single atom, and find my civilisation to be an outrageous imprint on reality. I don't understand it. Nobody does, but it makes me smile. This book asks questions about our origins, our destiny, and our place i...

  7. Universal overgroup

    Science.gov (United States)

    Arnal, Didier; Selmi, Mohamed; Zergane, Amel

    2011-01-01

    A way to separate irreducible unitary representations π for a Lie group G by moment sets is to use an infinite-dimensional overgroup G˜ and extensions of each representation π to a representation π˜ of G˜, in such a manner that the moment set of π˜ characterizes π. In this paper we propose a universal overgroup G˜, which is an infinite-dimensional Fréchet-Lie group. We extend each π to a Hamiltonian action π˜ of G˜. The moment set of π˜ characterizes π.

  8. Open University

    CERN Document Server

    Pentz,M

    1975-01-01

    Michel Pentz est née en Afrique du Sud et venu au Cern en 1957 comme physicien et président de l'associaion du personnel. Il est également fondateur du mouvement Antiapartheid de Genève et a participé à la fondation de l'Open University en Grande-Bretagne. Il nous parle des contextes pédagogiques, culturels et nationaux dans lesquels la méthode peut s'appliquer.

  9. Yale University

    Institute of Scientific and Technical Information of China (English)

    李琳

    2007-01-01

    Being one of the world's great universities, Yale enrolls no less than 11,000 students from more than one hundred countries. And the 3,200-member faculty is a richly diverse group of men and women who are leaders in their respective fields. The 260 buildings in Yale include contributions from distinguished architects of every period in its history. The central campus of Yale now covers 310 acres (125 hectares) stretching from the School of Nursing in downtown New Haven to tree-shaded residential neighbor...

  10. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Monday 9 March 2009 COLLOQUIUM at 17:00 – Stückelberg Auditorium Are We Descended From Heavy Neutrinos? Prof. Boris Kayser / Fermilab (Fermi National Accelerator Center, Geneva, Illinois, USA) Neutrinos are among the most abundant particles in the universe. The discovery that they have nonzero masses has raised a number of very interesting questions about them, and about their connections to other areas of physics and to cosmology. After briefly reviewing what has been learned about the neutrinos so far, we will identify the major open questions, explain why they are interesting, and discuss ideas and plans for answering them through future experiments. We will highlight a particularly intriguing question: Are neutrinos the key to understanding why the universe contains matter but almost no antimatter, making it s...

  11. Type Classes for Mathematics in Type Theory

    CERN Document Server

    Spitters, Bas

    2011-01-01

    The introduction of first-class type classes in the Coq system calls for re-examination of the basic interfaces used for mathematical formalization in type theory. We present a new set of type classes for mathematics and take full advantage of their unique features to make practical a particularly flexible approach formerly thought infeasible. Thus, we address both traditional proof engineering challenges as well as new ones resulting from our ambition to build upon this development a library of constructive analysis in which abstraction penalties inhibiting efficient computation are reduced to a minimum. The base of our development consists of type classes representing a standard algebraic hierarchy, as well as portions of category theory and universal algebra. On this foundation we build a set of mathematically sound abstract interfaces for different kinds of numbers, succinctly expressed using categorical language and universal algebra constructions. Strategic use of type classes lets us support these high...

  12. CRISIS COMMUNICATION IN UNIVERSITIES

    Directory of Open Access Journals (Sweden)

    Canan MADRAN

    2015-07-01

    Full Text Available Abstract Institutions should implement effective crisis communication strategies to manage their reputations in crisis situations. Thus, the negative perceptions that may occur because of crisis can be reduced and eliminated by continuously informing stakeholders. Therefore, various researches are needed in the area of crisis communication management. The aim of the study is to determine the types of crises that often occur in universities and evaluate the crisis communication efforts in higher education institutions. Crises and crisis communication efforts were evaluated within the framework of media reflections in this study. Content analysis was applied in the classification of crises and responses provided for crises. As a result, the types of crises in Turkish universities were determined as campus safety, actions, protests, loss of confidential information, loss of financial opportunities, loss of key managers and personnel, staff problems, increase of accidents, slander and gossip, unnecessary explanations, rumors, damage to organization and employee reputation, terrorism, workplace violence, corruption, fire and epidemic. It is seen that universities don’t make any communicational effort regarding campus safety, staff problems, increase of accidents, corruption or fire.

  13. Treatise on intuitionistic type theory

    CERN Document Server

    Granström, Johan Georg

    2011-01-01

    Intuitionistic type theory can be described, somewhat boldly, as a fulfillment of the dream of a universal language for science.  In particular, intuitionistic type theory is a foundation for mathematics and a programming language.

  14. Geneva University

    CERN Multimedia

    2008-01-01

    Ecole de physique - Département de physique nucléaire et corpusculaire 24, Quai Ernest-Ansermet 1211 GENEVE 4 Tél: (022) 379 62 73 Fax: (022) 379 69 92 Monday 28 April 2008 PHYSICS COLLOQUIUM at 17.00 – Stückelberg Auditorium Gravity : an Emergent Perspective by Prof. Thanu Padmanabhan, Pune University Dean, Ganeshkhind, Pune, India I will motivate and describe a novel perspective in which gravity arises as an emergent phenomenon, somewhat like elasticity. This perspective throws light on several issues which are somewhat of a mystery in the conventional approach. Moreover it provides new insights on the dark energy problem. In fact, I will show that it is necessary to have such an alternative perspective in order to solve the cosmological constant problem.Information: http://theory.physics.unige.ch/~fiteo/seminars/COL/collist.html

  15. Geneva University

    CERN Multimedia

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Monday 7 December 2009 PHYSICS COLLOQUIUM at 17:00 – Stückelberg Auditorium Topological insulators and topological superconductors Professor Shoucheng Zhang Department of Physics, Stanford University, CA   Recently, a new class of topological states has been theoretically predicted and experimentally realized. The topological insulators have an insulating gap in the bulk, but have topologically protected edge or surface states due to the time reversal symmetry. In two dimensions the edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. I shall review the theoretical prediction of the QSH state in HgTe/CdTe semiconductor quantum wells, and its recent experimental observation. The edge states of the QSH state supports fr...

  16. Geneva University

    CERN Multimedia

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 18 November  2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Highlights of the European Strategy Workshop for Future Neutrino Physics Dr Ilias Efthymiopoulos, CERN   Seminar cancelled! Information Organizer : J.-S. Graulich Monday 7 December 2009 PHYSICS COLLOQUIUM at 17:00 – Stückelberg Auditorium Topological insulators and topological superconductors Professor Shoucheng Zhang Department of Physics, Stanford University, CA   Recently, a new class of topological states has been theoretically predicted and experimentally realized. The topological insulators have an insulating gap in the bulk, but have topologically protected edge or surface states due to the time reversal symmetry. In two dimensions the edge s...

  17. The evanescence of rest masses and electric charge in black holes

    CERN Document Server

    Szabados, László B

    2016-01-01

    The classical Einstein-Standard Model system with conformally invariant coupling of the Higgs field to gravity is investigated in nearly Schwarzschild black holes. We show that, in the presence of Kantowski-Sachs symmetries, there is a finite critical value of the mean curvature such that on spacelike hypersurfaces with greater mean curvature the Higgs sector does not have any symmetry breaking vacuum state. Hence, according to the Standard Model of particle physics, the gauge and spinor fields do not have rest mass and electric charge. Therefore, particles falling into a nearly Schwarzschild black hole lose their mass and charge in the "reverse" Brout-Englert-Higgs mechanism.

  18. Noncommutative black holes

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, C; Bertolami, O [Departamento de Fisica, Instituto Superior Tecnico, Avenida Rovisco Pais 1, 1049-001 Lisboa (Portugal); Dias, N C; Prata, J N, E-mail: cbastos@fisica.ist.utl.p, E-mail: orfeu@cosmos.ist.utl.p, E-mail: ncdias@mail.telepac.p, E-mail: joao.prata@mail.telepac.p [Departamento de Matematica, Universidade Lusofona de Humanidades e Tecnologias, Avenida Campo Grande, 376, 1749-024 Lisboa (Portugal)

    2010-04-01

    One considers phase-space noncommutativity in the context of a Kantowski-Sachs cosmological model to study the interior of a Schwarzschild black hole. It is shown that the potential function of the corresponding quantum cosmology problem has a local minimum. One deduces the thermodynamics and show that the Hawking temperature and entropy exhibit an explicit dependence on the momentum noncommutativity parameter, {eta}. Furthermore, the t = r = 0 singularity is analysed in the noncommutative regime and it is shown that the wave function vanishes in this limit.

  19. The singularity problem and phase-space noncanonical noncommutativity

    CERN Document Server

    Bastos, Catarina; Dias, Nuno Costa; Prata, João Nuno

    2009-01-01

    The Wheeler-DeWitt equation arising from a Kantowski-Sachs model is considered for a Schwarzschild black hole under the assumption that the scale factors and the associated momenta satisfy a noncanonical noncommutative extension of the Heisenberg-Weyl algebra. An integral of motion is used to factorize the wave function into an oscillatory part and a function of a configuration space variable. The latter is shown to be normalizable using asymptotic arguments. It is then shown that on the hypersufaces of constant value of the argument of the wave function's oscillatory piece, the probability vanishes in the vicinity of the black hole singularity.

  20. Modelos cosmológicos anisótropos con constantes variables: un enfoque autosimilar

    OpenAIRE

    2012-01-01

    El objetivo de esta Tesis es estudiar la variación de las constantes físicas universales y con respecto al tiempo cosmológico, en modelos homogéneos pero anisótropos, es decir, los denominados modelos de Bianchi, junto con el modelo Kantowski-Sachs. Estudiaremos dicha variación dentro del marco teórico de varias teorías gravitatorias, como son: •Relatividad General (RG), convenientemente modificada en base a la identidad de Bianchi •Modelos quintaesencia (SM), considerando además los casos en...

  1. The Artful Universe Expanded

    Science.gov (United States)

    Barrow, John D.

    2005-07-01

    Our love of art, writes John Barrow, is the end product of millions of years of evolution. How we react to a beautiful painting or symphony draws upon instincts laid down long before humans existed. Now, in this enhanced edition of the highly popular The Artful Universe , Barrow further explores the close ties between our aesthetic appreciation and the basic nature of the Universe. Barrow argues that the laws of the Universe have imprinted themselves upon our thoughts and actions in subtle and unexpected ways. Why do we like certain types of art or music? What games and puzzles do we find challenging? Why do so many myths and legends have common elements? In this eclectic and entertaining survey, Barrow answers these questions and more as he explains how the landscape of the Universe has influenced the development of philosophy and mythology, and how millions of years of evolutionary history have fashioned our attraction to certain patterns of sound and color. Barrow casts the story of human creativity and thought in a fascinating light, considering such diverse topics as our instinct for language, the origins and uses of color in nature, why we divide time into intervals as we do, the sources of our appreciation of landscape painting, and whether computer-generated fractal art is really art. Drawing on a wide variety of examples, from the theological questions raised by St. Augustine and C.S. Lewis to the relationship between the pure math of Pythagoras and the music of the Beatles, The Artful Universe Expanded covers new ground and enters a wide-ranging debate about the meaning and significance of the links between art and science.

  2. Geneva University

    CERN Document Server

    2008-01-01

    Ecole de physique - Département de physique nucléaire et corpusculaire 24, Quai Ernest-Ansermet 1211 GENEVE 4 Tél: (022) 379 62 73 Fax: (022) 379 69 92 Wednesday 29 October 2008 PARTICLE PHYSICS SEMINAR at 17.00 – Stückelberg Auditorium Precision measurements of low-energy neutrino-nucleus interactions with the SciBooNE experiment at Fermilab by Dr Michel Sorel, IFIC (CSIC and University of Valencia) «Do all modern accelerator-based neutrino experiments need to make use of kiloton-scale detectors and decade-long exposure times? In order to study the full pattern of neutrino mixing via neutrino oscillation experiments, the answer is probably yes, together with powerful proton sources. Still, to push the sensitivity of future neutrino oscillation searches into unchartered territory, those are necessary, but not sufficient, ingredients. In addition, accurate knowledge of neutrino interactions and neutrino production is mandatory. This knowledge can be acquired via small-scale and short-term dedicated n...

  3. Geneva University

    CERN Multimedia

    2010-01-01

    Ecole de physique Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENEVE 4 Tel: (022) 379 62 73 Fax: (022) 379 69 92 Wednesday 14 April 2010 PARTICLE PHYSICS SEMINAR at 17.00 hrs – Stückelberg Auditorium Dark Matter and the XENON Experiment By Dr. Marc Schumann, Physik Institut, Universität Zürich There is convincing astrophysical and cosmological evidence that most of the matter in the Universe is dark: It is invisible in every band of the electromagnetic spectrum. Weakly interacting massive particles (WIMPs) are promising Dark Matter candidates that arise naturally in many theories beyond the Standard Model. Several experiments aim to directly detect WIMPs by measuring nuclear recoils from WIMPs scattered on target nuclei. In this talk, I will give an overview on Dark Matter and direct Dark Matter detection. Then I will focus on the XENON100 experiment, a 2-phase liquid/gas time projection chamber (TPC) that ...

  4. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Lundi 6 avril 2009 PARTICLE PHYSICS SEMINAR àt 17:00 – Auditoire Stückelberg Hospital superbugs, nanomechanics and statistical physics Prof. Dr G. Aeppli / University College London The alarming growth of the antibiotic-resistant superbug, methicillin-resistant Staphylococcus aureus (MRSA) is driving the development of new technologies to investigate antibiotics and their modes of action. We report silicon cantilever based studies of self-assembled monolayers of mucopeptides which model drug-sensitive and resistant bacterial walls. The underlying concepts needed to understand the measurements will simplify the design of cantilevers and coatings for biosensing and could even impact our understanding of drug action on bacteria themselves. (Une verrée en compagnie du conférencier sera offerte après le colloque.) Organizer : Prof. Markus Büttiker ...

  5. Universal algebra

    CERN Document Server

    Grätzer, George

    1979-01-01

    Universal Algebra, heralded as ". . . the standard reference in a field notorious for the lack of standardization . . .," has become the most authoritative, consistently relied on text in a field with applications in other branches of algebra and other fields such as combinatorics, geometry, and computer science. Each chapter is followed by an extensive list of exercises and problems. The "state of the art" account also includes new appendices (with contributions from B. Jónsson, R. Quackenbush, W. Taylor, and G. Wenzel) and a well-selected additional bibliography of over 1250 papers and books which makes this a fine work for students, instructors, and researchers in the field. "This book will certainly be, in the years to come, the basic reference to the subject." --- The American Mathematical Monthly (First Edition) "In this reviewer's opinion [the author] has more than succeeded in his aim. The problems at the end of each chapter are well-chosen; there are more than 650 of them. The book is especially sui...

  6. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 25 March 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Hunting for the Higgs with D0 at the Tevatron Prof. Gustaaf Brooijmans / Columbia University The search for the Higgs boson is one of the most important endeavors in current experimental particle physics. At the eve of the LHC start, the Tevatron is delivering record luminosity allowing both CDF and D0 to explore a new region of possible Higgs masses. In this seminar, the techniques used to search for the Higgs boson at the Tevatron will be explained, limiting factors will be examined, and the sensitivity in the various channels will be reviewed. The newly excluded values of the standard model Higgs mass will be presented. Information : http://dpnc.unige.ch/seminaire/annonce.html Organizer : J.-S. Graulich

  7. Heuristic Evaluation of Three Jordanian University Websites

    Directory of Open Access Journals (Sweden)

    Layla HASAN

    2013-10-01

    Full Text Available Generally, universities have complex and large websites, which include a collection of many sub-sites related to the different parts of universities (e.g. registration unit, faculties, departments. Managers of academic institutions and educational websites need to know types of usability problems that could be found on their websites. This would shed the light on possible weak aspects on their websites, which need to be improved, in order to reap the advantages of usable educational websites. There is a lack of research which provides detailed information regarding the types of specific usability problems that could be found on universities websites in general, and specifically in Jordan. This research employed the heuristic evaluation method to comprehensively evaluate the usability of three large public university websites in Jordan (Hashemite University, the University of Jordan, and Yarmouk University. The evaluation involves testing all pages related to the selected universities faculties and their corresponding departments. A list of 34 specific types of usability problems, which could be found on a Jordanian university website, was identified. The results provide a description regarding the common types of the problems found on the three Jordanian university sites, together with their numbers and locations on the website.

  8. Causal universe

    CERN Document Server

    Ellis, George FR; Pabjan, Tadeusz

    2013-01-01

    Written by philosophers, cosmologists, and physicists, this collection of essays deals with causality, which is a core issue for both science and philosophy. Readers will learn about different types of causality in complex systems and about new perspectives on this issue based on physical and cosmological considerations. In addition, the book includes essays pertaining to the problem of causality in ancient Greek philosophy, and to the problem of God's relation to the causal structures of nature viewed in the light of contemporary physics and cosmology.

  9. Universal Grammar Is a Universal Grammar

    OpenAIRE

    Casares, Ramón

    2014-01-01

    Is Universal Grammar a universal grammar? From Chomsky's hierarchy we deduce that for each grammar there is a Turing machine, and conversely. Following this equivalence, it is immediate to conclude that a universal Turing machine is equivalent to a universal grammar. Meanwhile, in linguistics, Universal Grammar is the human brain circuitry that implements the faculty of language. So the definitive answer is achieved only when we show that the human brain is Turing complete, and that language ...

  10. The Role and Mission of the University in Cultural Development and Education: Diversity within Universality.

    Science.gov (United States)

    Sarukhan, Jose

    The university in Latin America has always been a dynamic and changing institution. One of the university's roles is to produce free and universal individuals, who are capable of thinking, deciding, and acting on their own, and are possessors of an inner freedom that liberates them of all types of prejudice. In its role as intellectual…

  11. Analysis of Job Satisfaction of University Professors from Nine Chinese Universities

    Science.gov (United States)

    Du, Ping; Lai, Manhong; Lo, Leslie N. K.

    2010-01-01

    Research on work life and job satisfaction of university professors is becoming an important research issue in the field of higher education. This study used questionnaires administered to 1 770 teachers from different levels, types, and academic fields of Chinese universities to investigate job satisfaction among university professors and the…

  12. 大学文凭一定要与毕业论文(设计)挂钩吗?——发达国家应用型高校的启示%Must be University Diploma Link up with the Graduation Thesis (Design)?The Inspiration given to our by Applied-type Universities in Developed Countries

    Institute of Scientific and Technical Information of China (English)

    程东岳; 王淼

    2012-01-01

    毕业论文(设计)是我国大学本科毕业生获得文凭及学位的一个必要环节。但近些年来,本科毕业论文(设计)缺乏创新性、与实际脱节、形式化倾向明显,毕业论文(设计)存在的必要性引起了社会的广泛讨论。通过对美国社区学院与技术学院、英国多科技术大学和加拿大社区学院的文科专业学生获取学士学位的条件与人才培养模式的分析研究,为我国应用型高校本科毕业论文(设计)的改革提供有益的参考。%The graduation thesis (design) is a necessary link for China's Bachelor's degree graduates to obtain a diploma and degree. But in recent years, the undergraduate graduation thesis (design) lacks the innovation, be disjointed the practice, the formalization tendency is obvious, the existence necessity of the graduation thesis (design) of aroused extensive discussion. According to the analysis and research about the liberal arts students to earn a bachelor's degree and talent training mode of American Community College and Technical Institute, Polytechnic University of British and Canadian Community College, which can provide beneficial reference for the reform of our applied-type undergraduate thesis (design).

  13. Language universals at birth.

    Science.gov (United States)

    Gómez, David Maximiliano; Berent, Iris; Benavides-Varela, Silvia; Bion, Ricardo A H; Cattarossi, Luigi; Nespor, Marina; Mehler, Jacques

    2014-04-22

    The evolution of human languages is driven both by primitive biases present in the human sensorimotor systems and by cultural transmission among speakers. However, whether the design of the language faculty is further shaped by linguistic biological biases remains controversial. To address this question, we used near-infrared spectroscopy to examine whether the brain activity of neonates is sensitive to a putatively universal phonological constraint. Across languages, syllables like blif are preferred to both lbif and bdif. Newborn infants (2-5 d old) listening to these three types of syllables displayed distinct hemodynamic responses in temporal-perisylvian areas of their left hemisphere. Moreover, the oxyhemoglobin concentration changes elicited by a syllable type mirrored both the degree of its preference across languages and behavioral linguistic preferences documented experimentally in adulthood. These findings suggest that humans possess early, experience-independent, linguistic biases concerning syllable structure that shape language perception and acquisition.

  14. The Universal Ancestor

    Science.gov (United States)

    Woese, Carl

    1998-06-01

    A genetic annealing model for the universal ancestor of all extant life is presented; the name of the model derives from its resemblance to physical annealing. The scenario pictured starts when ``genetic temperatures'' were very high, cellular entities (progenotes) were very simple, and information processing systems were inaccurate. Initially, both mutation rate and lateral gene transfer levels were elevated. The latter was pandemic and pervasive to the extent that it, not vertical inheritance, defined the evolutionary dynamic. As increasingly complex and precise biological structures and processes evolved, both the mutation rate and the scope and level of lateral gene transfer, i.e., evolutionary temperature, dropped, and the evolutionary dynamic gradually became that characteristic of modern cells. The various subsystems of the cell ``crystallized,'' i.e., became refractory to lateral gene transfer, at different stages of ``cooling,'' with the translation apparatus probably crystallizing first. Organismal lineages, and so organisms as we know them, did not exist at these early stages. The universal phylogenetic tree, therefore, is not an organismal tree at its base but gradually becomes one as its peripheral branchings emerge. The universal ancestor is not a discrete entity. It is, rather, a diverse community of cells that survives and evolves as a biological unit. This communal ancestor has a physical history but not a genealogical one. Over time, this ancestor refined into a smaller number of increasingly complex cell types with the ancestors of the three primary groupings of organisms arising as a result.

  15. A University in Paradise: Zhejiang University

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Founded in 1897 and one of the oldest institutions of higher learning in China, Zhejiang University has the reputation as “Cambridge of the East.” It has always been one of the top universities in China, in terms of its comprehensive academic strength in teaching, research and facilities. In September of 1998, a new Zhejiang University was established on the basis of amalgamation of the four former individual universities,Zhejiang University,, Hangzhou University, Zhejiang Agricultural University and Zhejiang Medical University, all located in the garden city of Hangzhou. Endowed with a pleasant climate, picturesque surroundings and a favorable academic atmosphere, Zhejiang University is an ideal place for teaching, research and learning.

  16. University President Compensation: Evidence from the United States

    Science.gov (United States)

    Bai, Ge

    2014-01-01

    I examine whether compensation of the university president is a function of university type (i.e., top, research, master's, bachelor's/specialized). Using a panel dataset containing 761 private universities in the United States, I find that (i) the president's pay is linked to the university's performance in the previous period and (ii) the…

  17. Refinements in the Jungle Universes

    CERN Document Server

    Simon-Petit, Alicia; Perez, Jérôme

    2016-01-01

    How can effective barotropic matter emerge from the interaction of cosmological fluids in an isotropic and homogeneous cosmological model? The dynamics of homogeneous and isotropic Friedmann-Lema\\^itre-Robertson-Walker universes is a natural special case of generalized Lotka-Volterra systems where each of the universe's fluid components can be seen as a competitive species in a predator-prey model. (Jungle universe : arXiv:1306.1037) In addition to numerical simulations illustrating this behaviour among the barotropic fluids filling the universe, we analytically pinpoint that effective time-dependent barotropic indices can arise from a physical coupling between those fluids whose dynamics could then look like that of another type of cosmic fluid, such as a cosmological constant. Since the nature of dark energy is still unknown, this dynamical approach could help understanding some of the properties of dark matter and dark energy at large cosmological scales.

  18. Is the Universe transparent?

    Science.gov (United States)

    Liao, Kai; Avgoustidis, A.; Li, Zhengxiang

    2015-12-01

    We present our study on cosmic opacity, which relates to changes in photon number as photons travel from the source to the observer. Cosmic opacity may be caused by absorption or scattering due to matter in the Universe, or by extragalactic magnetic fields that can turn photons into unobserved particles (e.g., light axions, chameleons, gravitons, Kaluza-Klein modes), and it is crucial to correctly interpret astronomical photometric measurements like type Ia supernovae observations. On the other hand, the expansion rate at different epochs, i.e., the observational Hubble parameter data H (z ), are obtained from differential ageing of passively evolving galaxies or from baryon acoustic oscillations and thus are not affected by cosmic opacity. In this work, we first construct opacity-free luminosity distances from H (z ) determinations, taking into consideration correlations between different redshifts for our error analysis. Moreover, we let the light-curve fitting parameters, accounting for distance estimation in type Ia supernovae observations, free to ensure that our analysis is authentically cosmological-model independent and gives a robust result. Any nonzero residuals between these two kinds of luminosity distances can be deemed as an indication of the existence of cosmic opacity. While a transparent Universe is currently consistent with the data, our results show that strong constraints on opacity (and consequently on physical mechanisms that could cause it) can be obtained in a cosmological-model-independent fashion.

  19. Dark matter universe.

    Science.gov (United States)

    Bahcall, Neta A

    2015-10-06

    Most of the mass in the universe is in the form of dark matter--a new type of nonbaryonic particle not yet detected in the laboratory or in other detection experiments. The evidence for the existence of dark matter through its gravitational impact is clear in astronomical observations--from the early observations of the large motions of galaxies in clusters and the motions of stars and gas in galaxies, to observations of the large-scale structure in the universe, gravitational lensing, and the cosmic microwave background. The extensive data consistently show the dominance of dark matter and quantify its amount and distribution, assuming general relativity is valid. The data inform us that the dark matter is nonbaryonic, is "cold" (i.e., moves nonrelativistically in the early universe), and interacts only weakly with matter other than by gravity. The current Lambda cold dark matter cosmology--a simple (but strange) flat cold dark matter model dominated by a cosmological constant Lambda, with only six basic parameters (including the density of matter and of baryons, the initial mass fluctuations amplitude and its scale dependence, and the age of the universe and of the first stars)--fits remarkably well all the accumulated data. However, what is the dark matter? This is one of the most fundamental open questions in cosmology and particle physics. Its existence requires an extension of our current understanding of particle physics or otherwise point to a modification of gravity on cosmological scales. The exploration and ultimate detection of dark matter are led by experiments for direct and indirect detection of this yet mysterious particle.

  20. Promoting Leadership in Australian Universities

    Science.gov (United States)

    Bradley, Andrew P.; Grice, Tim; Paulsen, Neil

    2017-01-01

    In this paper we review current practices for developing and promoting academic leadership in universities. We consider the forms of leadership that are appropriate for academic organisations, while exploring the types of leadership favoured by recruitment and promotion committees. Using the Australian higher education context as a case study, we…

  1. Clemson University: College and University Systems Environment.

    Science.gov (United States)

    CAUSE/EFFECT, 1980

    1980-01-01

    The administrative computing operation of Clemson University is discussed. The university's computing history, computer hardware, and computing organization (including the Computer Center, administrative programing services, and information systems development) are described. (MLW)

  2. Homogeneous Universes in Extended Inflation II

    Science.gov (United States)

    Guzmán, Enrique

    1997-04-01

    It is shown that the scalar field π of the Brans-Dicke theory in the Bianchi TypeVIo-VIh-VIIh-VIII and IX models has the same form that in the isotropic Robertson-Walker case. It is shown that the Universe will be isotropized very fast, permitting so that the approximation of an Universe Robertson-Walker isotropic to be a good approach in the early Universe.

  3. Criteria for universality of quantum gates

    Science.gov (United States)

    Sawicki, Adam; Karnas, Katarzyna

    2017-06-01

    We consider the problem of deciding if a set of quantum one-qudit gates S ={U1,...,Un} is universal. We provide the compact-form criteria leading to a simple algorithm that allows deciding the universality of any given set of gates in a finite number of steps. Moreover, for a nonuniversal S our criteria indicate what types of gates can be added to S to turn it into a universal set.

  4. On Universal Quantum Dimensions

    CERN Document Server

    Mkrtchyan, R L

    2016-01-01

    We derive universal expressions for quantum dimensions (universal characters) of some series of irreps of simple Lie algebras. This allows us to check Deligne's hypothesis on universal quantum dimensions for symmetric cube of adjoint representation.

  5. Multiple Intelligences of Students at Jordanian Universities

    Science.gov (United States)

    Khataybeh, Abdalla; Al-Sheikh, Kholoud

    2011-01-01

    The present study aimed at investigating different intelligence types among Jordanian students at different public and private universities in Jordan. To achieve such aim, it sought to identify and rank multiple intelligences that characterize students at Jordanian universities, and to identify and rank the differences in multiple intelligences…

  6. Varsity letters documenting modern colleges and universities

    CERN Document Server

    Samuels, Helen Willa

    1998-01-01

    A study of the functions of colleges and universities, Varsity Letters is intended to aid those responsible for the documentation of these institutions. Samuels offers specific advice about the records of modern colleges and universities and proposes a method to ensure their adequate documentation. She also offers a method to analyze and plan the preservation of records for any type of institution.

  7. Psychological and Educational Variables in University Dropout

    Science.gov (United States)

    Bethencourt, Jose Tomas; Cabrera, Lidia; Hernandez, Juan Andres; Alvarez-Perez, Pedro; Gonzalez-Afonso, Miriam

    2008-01-01

    Introduction: The purpose of this research is to demonstrate that on the perceptions of university students, the student variables are seen as most important than the context variables to dropout their university studies. Method: The used methodology was cross-sectional or of cut, of retrospective type. 558 undergraduates were interviewed by…

  8. Heuristic Evaluation of Three Jordanian University Websites

    Science.gov (United States)

    Hasan, Layla

    2013-01-01

    Generally, universities have complex and large websites, which include a collection of many sub-sites related to the different parts of universities (e.g. registration unit, faculties, departments). Managers of academic institutions and educational websites need to know types of usability problems that could be found on their websites. This would…

  9. Interpreting the universal phylogenetic tree

    Science.gov (United States)

    Woese, C. R.

    2000-01-01

    The universal phylogenetic tree not only spans all extant life, but its root and earliest branchings represent stages in the evolutionary process before modern cell types had come into being. The evolution of the cell is an interplay between vertically derived and horizontally acquired variation. Primitive cellular entities were necessarily simpler and more modular in design than are modern cells. Consequently, horizontal gene transfer early on was pervasive, dominating the evolutionary dynamic. The root of the universal phylogenetic tree represents the first stage in cellular evolution when the evolving cell became sufficiently integrated and stable to the erosive effects of horizontal gene transfer that true organismal lineages could exist.

  10. Cosmic String Universes Embedded with Viscosity

    Institute of Scientific and Technical Information of China (English)

    Koijam Manihar Singh; Kangujam Priyokumar Singh

    2011-01-01

    We study string cosmological models with attached particles in LRS BI type space time.The dynamical and physical properties of such universes are studied,and the possibility that during the evolution of the universe the strings disappear,leaving only the particles,is also discussed.It is found that bulk viscosity plays a large role in the evolution of the universe.In these models we find critical instances of when there was a “Bounce”.The studied models are found to be of an inflationary type,and since a desirable feature of a meaningful string cosmological model is the presence of an inflationary epoch in the very early stages of evolution,our models can be thought of as realistic universes.The origin of the universe and the early stages of formation are still interesting areas of research.The concept of string theory was developed to describe the events of the early stages of the evolution of the universe.The universe can be described as a collection of extended (non point) objects.Thus,“string dust” cosmology will provide us with a model to investigate the properties related to this fact.%We study string cosmological models with attached particles in LRS BI type space time. The dynamical and physical properties of such universes are studied, and the possibility that during the evolution of the universe the strings disappear, leaving only the particles, is also discussed. It is found that bulk viscosity plays a large role in the evolution of the universe. In these models we find critical instances of when there was a "Bounce". The studied models are found to be of an inflationary type, and since a desirable feature of a meaningful string cosmological model is the presence of an inflationary epoch in the very early stages of evolution, our models can be thought of as realistic universes.

  11. Is the Universe Transparent?

    CERN Document Server

    Liao, Kai; Li, Zhengxiang

    2015-01-01

    We present our study on cosmic opacity, which relates to changes in photon number as photons travel from the source to the observer. Cosmic opacity may be caused by absorption/scattering due to matter in the universe, or by extragalactic magnetic fields that can turn photons into unobserved particles (e.g. light axions, chameleons, gravitons, Kaluza-Klein modes), and it is crucial to correctly interpret astronomical photometric measurements like type Ia supernovae observations. On the other hand, the expansion rate at different epochs, i.e. the observational Hubble parameter data $H(z)$, are obtained from differential ageing of passively evolving galaxies or from baryon acoustic oscillations and thus are not affected by cosmic opacity. In this work, we first construct opacity-free luminosity distances from $H(z)$ determinations, taking correlations between different redshifts into consideration for our error analysis. Moreover, we let the light-curve fitting parameters, accounting for distance estimation in t...

  12. 高校学习型领导班子学习方式的创新研究%Learning Method Innovation Research of University Leadership of Learning Type

    Institute of Scientific and Technical Information of China (English)

    敖丽

    2012-01-01

    加强高校学习型领导班子建设,是贯彻落实党的十七届四中全会精神、履行高等学校职责、提高高校领导班子办学治校能力、推进高等教育健康发展的迫切需要。必须创新多种学习方式,提高学习效果,才能有效保证学习型领导班子的建设。%Strengthening the construction of leading group of the leadership university is urgent need to Implement implement the spirit of the Fourth Plenary Session of the seventeen Seventeenth party National People's Congress, perform duties, improvinge the University Leadership leadership and promote the healthy development of university . We must innovate the multiple learning styles and improving improve the learning effect, so we can effectively guarantee the construction of leading group.

  13. The Global University Press

    Science.gov (United States)

    Dougherty, Peter J.

    2012-01-01

    The modern world's understanding of American university press has long been shaped by university-press books. American university-press books are good international advertisements for the universities whose logos grace their spines. The growth of transnational scholarship and the expansion of digital communications networks are converging in ways…

  14. The University of Cambridge

    Institute of Scientific and Technical Information of China (English)

    郭大任

    2007-01-01

    The University of Cambridge was founded in 1209,just a few decades after Oxford University,making it the second oldest university in the English-speaking world.Like“the other place”, the university is made up of 31 colleges and more than 100 departments,catering for around 15,500 students.Cambridge has a worldwide reputation for outstanding

  15. Self-similar cosmological solutions with dark energy. I. Formulation and asymptotic analysis

    Science.gov (United States)

    Harada, Tomohiro; Maeda, Hideki; Carr, B. J.

    2008-01-01

    Based on the asymptotic analysis of ordinary differential equations, we classify all spherically symmetric self-similar solutions to the Einstein equations which are asymptotically Friedmann at large distances and contain a perfect fluid with equation of state p=(γ-1)μ with 0antigravity. This extends the previous analysis of spherically symmetric self-similar solutions for fluids with positive pressure (γ>1). However, in the latter case there is an additional parameter associated with the weak discontinuity at the sonic point and the solutions are only asymptotically “quasi-Friedmann,” in the sense that they exhibit an angle deficit at large distances. In the 0<γ<2/3 case, there is no sonic point and there exists a one-parameter family of solutions which are genuinely asymptotically Friedmann at large distances. We find eight classes of asymptotic behavior: Friedmann or quasi-Friedmann or quasistatic or constant-velocity at large distances, quasi-Friedmann or positive-mass singular or negative-mass singular at small distances, and quasi-Kantowski-Sachs at intermediate distances. The self-similar asymptotically quasistatic and quasi-Kantowski-Sachs solutions are analytically extendible and of great cosmological interest. We also investigate their conformal diagrams. The results of the present analysis are utilized in an accompanying paper to obtain and physically interpret numerical solutions.

  16. Do ‘African’ universities exist?

    DEFF Research Database (Denmark)

    2015-01-01

    subsequently outlines the international dimension of higher education in Africa, including an introduction to issues of capacity building. The last half of the chapter concerns knowledge production; first we point to the hegemony of Western thought in education and knowledge production as well...... by arguing that it is incorrect to talk about African universities as a certain type of university due to the different colonial heritage. However, universities in Africa are facing a number of similar challenges related to the European heritage of the university for instance what counts as legitimate...

  17. The Artful Universe Expanded

    Energy Technology Data Exchange (ETDEWEB)

    Bassett, B A [Institute of Cosmology and Gravitation, University of Portsmouth (United Kingdom)

    2005-07-29

    The cosmos is an awfully big place and there is no better guide to its vast expanse and fascinating nooks and crannies than John Barrow. A professor of mathematical sciences at Cambridge University, Barrow embodies that rare combination of highly polished writer and expert scientist. His deft touch brings together the disparate threads of human knowledge and weaves them into a tapestry as rich and interesting for the expert as it is for the layperson. The Artful Universe Expanded is an updated edition of this popular book first published in 1995. It explores the deeply profound manner in which natural law and the nature of the cosmos have moulded and shaped us, our cultures and the very form of our arts and music-a new type of 'cosmic' anthropology. The main themes Barrow chooses for revealing this new anthropology are the subjects of evolution, the size of things, the heavens and the nature of music. The book is a large, eclectic repository of knowledge often unavailable to the layperson, hidden in esoteric libraries around the world. It rivals The Da Vinci Code for entertainment value and insights, but this time it is Nature's code that is revealed. It is rare indeed to find common threads drawn through topics as diverse as The Beetles, Bach and Beethoven or between Jackson Pollock, the Aztecs, Kant, Picasso, Byzantine mosaics, uranium-235 and the helix nebula. Barrow unerringly binds them together, presenting them in a stimulating, conversational style that belies the amount of time that must have gone into researching this book. Dip into it at random, or read it from cover to cover, but do read it. The Artful Universe Expanded is an entertaining antidote to the oft-lamented pressures to know more and more about less and less and the apparently inexorable march of specialization. On reading this book one can, for a short time at least, hold in one's mind a vision that unifies science, art and culture and glimpse a universal tapestry of great

  18. Accelerating Expansion of the Universe

    CERN Document Server

    Chakraborty, Writambhara

    2011-01-01

    This thesis concentrates on the accelerated expansion of the Universe recently explored by measurements of redshift and luminosity-distance relations of type Ia Supernovae. We have considered a model of the universe filled with modified Chaplygin gas and barotropic fluid. The role of dynamical cosmological constant has been explored with Modified Chaplygin Gas as the background fluid. Various phenomenological models for \\Lambda have been studied in presence of the gravitational constant G to be constant or time dependent. A new form of the well known Chaplygin gas model has been presented by introducing inhomogeneity in the EOS. This model explains w=-1 crossing. An interaction of this model with the scalar field has also been investigated through a phenomenological coupling function. Tachyonic field has been depicted as dark energy model to represent the present acceleration of the Universe. A mixture of the tachyonic fluid has been considered with Generalized Chaplygin Gas to show the role of the later as a...

  19. Research on New Type Information System Construction Project and Comprehensive Evaluation System for Universities%高校新型信息系统建设方案和评测体系的研究

    Institute of Scientific and Technical Information of China (English)

    成雨含

    2016-01-01

    随着教育资源大数据时代的到来,高校信息系统的建设面临新的发展机遇和挑战.针对高校新型信息系统建设和整合的需求,文中提出基于云技术组建新一代数字化校园,新建与整合各种云技术资源,建立智能校园、智慧校园的方案,并且重点讨论了一套由可行性评价、经济效益评价、技术质量评价所构建的高校新型信息系统综合评测体系,通过独立因子分析法对其进行定量分析,提供一个系统、直观、具体的数量分析结果,以确保信息系统每一阶段的建设都能为高校带来新的竞争力.最后,给出了一个应用案例.结果表明,文中所述方法具有科学性和方便性,为高校新型信息系统的建设和整合提供了一套可行的评价方案.%With the advent of the big data era,information system construction for colleges and universities faces new development oppor-tunities and challenge. A project is presented that based on cloud technology to form a new generation of digital campus,and it can in-tegrate new cloud resources,building intelligence campus and wisdom campus. On the basis of practice,it sums up a set of the new com-prehensive evaluation system for university information system constructed by feasibility evaluation,economic evaluation,and technical quality evaluation. The independent factor analysis method is used to analyze quantitively in detail,which provides a systematic,intuitive, and specific analysis result,to ensure that every stage of the construction of information system can bring new competitive power of colle-ges and universities. Finally,an application case is given. The results show this method is scientific and convenient,which provides a set of feasible evaluation scheme for the university information system.

  20. Benchmarking in University Toolbox

    Directory of Open Access Journals (Sweden)

    Katarzyna Kuźmicz

    2015-06-01

    Full Text Available In the face of global competition and rising challenges that higher education institutions (HEIs meet, it is imperative to increase innovativeness and efficiency of their management. Benchmarking can be the appropriate tool to search for a point of reference necessary to assess institution’s competitive position and learn from the best in order to improve. The primary purpose of the paper is to present in-depth analysis of benchmarking application in HEIs worldwide. The study involves indicating premises of using benchmarking in HEIs. It also contains detailed examination of types, approaches and scope of benchmarking initiatives. The thorough insight of benchmarking applications enabled developing classification of benchmarking undertakings in HEIs. The paper includes review of the most recent benchmarking projects and relating them to the classification according to the elaborated criteria (geographical range, scope, type of data, subject, support and continuity. The presented examples were chosen in order to exemplify different approaches to benchmarking in higher education setting. The study was performed on the basis of the published reports from benchmarking projects, scientific literature and the experience of the author from the active participation in benchmarking projects. The paper concludes with recommendations for university managers undertaking benchmarking, derived on the basis of the conducted analysis.

  1. On the internal structures of inductive types

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The paper investigates the internal structures of hereditary inductive types in logical type theory. By defining a bisimulation equality on the inhabitants of each hereditary inductive type, one is able to show that the inhabitants of a hereditary inductive type satisfy the basic properties of sets. A hereditary inductive type can therefore be conceived as a universe of sets.

  2. Type-II Leptogenesis

    CERN Document Server

    Kim, Jihn E

    2016-01-01

    I will talk on our new theory on baryogenesis through type-II leptogenesis which is different from the well-known type-I leptogenesis. I will comment on the Jarlskog phases, $\\delta_{\\rm CKM}$ and $\\delta_{\\rm PMNS}$, in the CKM and PMNS matrices. In the type-II leptogenesis, the PMNS phase is used for Sakharov's condition on the global quantum number generation in the Universe. For this to be effective, the SU(2)$\\times$U(1) gauge symmetry must be broken during the leptogenesis epoch.

  3. Ia型超新星测距揭示宇宙的命运——2011年诺贝尔物理学奖简介%Unveiling Fate of the Universe Through Observations of Type Ia Supernovae - Brief Introduction to the Nobel Prize in Physics 2011

    Institute of Scientific and Technical Information of China (English)

    王博; 张江; 王晓锋; 韩占文

    2011-01-01

    The Nobel Prize in Physics for 2011 was awarded to Saul Perlmutter, Brian Schmidt and Adam Riess for the discovery of the accelerating expansion of the Universe through observations of distant type la supernovae. This leads to the hypothesis of dark energy. In this paper, we will describe the study history of the Universe, type la supernovae and the accelerating expansion of the U-niverse, dark energy, and the problems in the study of type la supernovae. Especially, we also introduce domestic progress and perspective in this field.%2011年度诺贝尔物理学奖授予了在天体物理研究领域取得杰出成就的美国科学家索尔·波尔马特、拥有美国和澳大利亚双重国籍的科学家布赖恩·施密特以及美国科学家亚当·里斯.他们通过Ia型超新星测距发现宇宙的膨胀是加速的,从而揭示了暗能量的存在.笔者将对人类认识宇宙的过程、Ia型超新星与宇宙加速膨胀、暗能量以及Ia型超新星研究中存在的问题做全面的介绍,并介绍中国学者在该领域的研究进展.文章的最后做了展望.

  4. Student Target Marketing Strategies for Universities

    Science.gov (United States)

    Lewison, Dale M.; Hawes, Jon M.

    2007-01-01

    As colleges and universities adopt marketing orientations to an ever-increasing extent, the relative merits of mass marketing and target marketing must also be explored. Researchers identify buyer types as potential students focused on quality, value or economy. On the other axis, learner types are described as those who focus on career,…

  5. Universics: a Theory of Universes of Discourse for Metamathematics and Foundations

    Directory of Open Access Journals (Sweden)

    Ioachim Drugus

    2016-04-01

    Full Text Available A new type of structures called ``universes'' is introduced to subsume the ``von Neumann universe'', ``Grothendieck universes'' and ``universes of discourse'' of various theories. Theories are also treated as universes, ``universes of ideas'', where ``idea" is a common term for assertions and terms. A dualism between induction and deduction and their treatment on a common basis is provided. The described approach referenced as ``universics'' is expected to be useful for metamathematical analysis and to serve as a foundation for mathematics. As a motivation for this research served the Harvey Friedman's desideratum to develop a foundational theory based on ``induction construction'', possibly comprising set theory. This desideratum emerged due to ``foundational incompleteness'' of set theory. The main results of this paper are an explication of the notion ``foundational completeness'', and a generalization of well-founded-ness.

  6. University-Industry Collaboration from a Relationship Marketing Perspective: An Empirical Analysis in a Spanish University

    Science.gov (United States)

    Frasquet, Marta; Calderon, Haydee; Cervera, Amparo

    2012-01-01

    Building relationships between universities and industry bodies is of prime importance for creating value for universities' stakeholders. This paper focuses on relationships in relation to undergraduate internship programmes in the Social Sciences. Using the relationship marketing approach, we analyze this type of collaboration of firms with a…

  7. University-Industry Collaboration from a Relationship Marketing Perspective: An Empirical Analysis in a Spanish University

    Science.gov (United States)

    Frasquet, Marta; Calderon, Haydee; Cervera, Amparo

    2012-01-01

    Building relationships between universities and industry bodies is of prime importance for creating value for universities' stakeholders. This paper focuses on relationships in relation to undergraduate internship programmes in the Social Sciences. Using the relationship marketing approach, we analyze this type of collaboration of firms with a…

  8. University Staff's Perception of Deregulation on Higher Education in Nigeria

    Science.gov (United States)

    Adebayo, Florence Aduke

    2014-01-01

    The study investigated the university staff's perception on deregulation of higher education in Nigeria. Descriptive research of the survey type was used for the study. The population comprised all the university staff of universities in Ekiti and Ondo states, Nigeria. Simple random sampling technique was used to select 700 academic and…

  9. Change of Time and Universal Laws in Turbulence

    DEFF Research Database (Denmark)

    Barndorff-Nielsen, Ole Eiler; Schmiegel, Jürgen

    The notion of universality is a key concept in the phenomenological description of turbulent flows. Here, we report on empirical evidence for a new type of universality that goes beyond the universal scaling picture of fully developed turbulent states. We show that the empirical densities of turb...

  10. 我国大学科研不端行为的类型、诱因及后果%The Types, Incentives and Effects of Research Misconduct in China' Universities

    Institute of Scientific and Technical Information of China (English)

    匡促联

    2011-01-01

    The research misconduct in China's universities is mainly shown as power rent-seeking, fraud- ulent practice, repeated bubble making and fame-and-fortune pursuit. The vague understanding of scientific value, apatheic consciousness of research rules and feelings of honor and shame in research activities are the subjective reasons that cause research misconduct. The objective reasons of research misconduct include the uniting of administration and academy, centralized operation in professional title evaluation and the inabilities from the research correction mechanism. The research misconduct will trample the dignity of scientific research, ruin the reputation of university and stop China from becoming a powerful nation of science and technology.%大学科研不端行为的类型主要有权力寻租型、弄虚作假型、重复泡沫型和追名逐利型等。科研个体主观上的科研价值认识模糊、科研规范意识淡薄、科研荣辱之情缺乏,以及高校管理体制的政学合一、高校学术职称评定的集权操作和科研纠错机制的被动无力等客观原因是诱发科研不端行为发生的重要因素。科研不端行为既践踏了科研的尊严、毁坏了大学声誉,也阻碍了科技强国,需要我们予以深切的关注。

  11. Gambling with the Universe

    Science.gov (United States)

    Hawking, Stephen

    2002-05-01

    This is an excerpt from Stephen Hawking's book The Universe in a Nutshell. Roger Penrose and Stephen Hawking, Lucasian Professor of Mathematics at the University of Cambridge, were able to show that Einstein's General Theory of Relativity implied that the universe and time itself must have had a beginning in a tremendous explosion. The discovery of the expansion of the universe is one of the great intellectual revolutions of the twentieth century.

  12. Situated University, Situated Writing

    Science.gov (United States)

    Feldman, Ann M.

    2009-01-01

    This article argues that teaching as a situated, civic activity must be a core intellectual activity in the engaged metropolitan university. Situated writing provides the key pedagogy for the Chicago Civic Leadership Certificate Program at the University of Illinois at Chicago, an engaged public research university. The role of writing, or…

  13. Universal correlators from geometry

    Energy Technology Data Exchange (ETDEWEB)

    Dijkgraaf, Robbert [Institute for Theoretical Physics, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands); Korteweg-de Vries Institute for Mathematics, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands); Temuerhan, Mine; Sinkovics, Annamaria [Institute for Theoretical Physics, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands)]. E-mail: sinkovic@science.uva.nl

    2004-11-01

    Matrix model correlators show universal behaviour at short distances. We provide a derivation for these universal correlators by inserting probe branes in the underlying effective geometry. We generalize these results to study correlators of branes and their universal behaviour in the Calabi-Yau crystals, where we find a role for a generalized brane insertion. (author)

  14. Universal Correlators from Geometry

    Science.gov (United States)

    Dijkgraaf, Robbert; Sinkovics, Annamaria; Temurhan, Mine

    2004-11-01

    Matrix model correlators show universal behaviour at short distances. We provide a derivation for these universal correlators by inserting probe branes in the underlying effective geometry. We generalize these results to study correlators of branes and their universal behaviour in the Calabi-Yau crystals, where we find a role for a generalized brane insertion.

  15. Universal Correlators from Geometry

    CERN Document Server

    Dijkgraaf, R; Temurhan, M; Dijkgraaf, Robbert; Sinkovics, Annamaria; Temurhan, Mine

    2004-01-01

    Matrix model correlators show universal behaviour at short distances. We provide a derivation for these universal correlators by inserting probe branes in the underlying effective geometry. We generalize these results to study correlators of branes and their universal behaviour in the Calabi-Yau crystals, where we find a role for a generalized brane insertion.

  16. The University Culture

    Science.gov (United States)

    Simplicio, Joseph

    2012-01-01

    In this article the author discusses the role university culture can play on a campus and how it can impact policy and practice. The article explores how a university's history, values, and vision form its culture and how this culture in turn affects its stability and continuity. The article discusses how newcomers within the university are…

  17. What Are Good Universities?

    Science.gov (United States)

    Connell, Raewyn

    2016-01-01

    This paper considers how we can arrive at a concept of the good university. It begins with ideas expressed by Australian Vice-Chancellors and in the "league tables" for universities, which essentially reproduce existing privilege. It then considers definitions of the good university via wish lists, classic texts, horror lists, structural…

  18. Mathematics at University

    DEFF Research Database (Denmark)

    Winsløw, Carl

    2015-01-01

    Mathematics is studied in universities by a large number of students. At the same time it is a field of research for a (smaller) number of university teachers. What relations, if any, exist between university research and teaching of mathematics? Can research “support” teaching? What research and...

  19. A Universal Reactive Machine

    DEFF Research Database (Denmark)

    Andersen, Henrik Reif; Mørk, Simon; Sørensen, Morten U.

    1997-01-01

    Turing showed the existence of a model universal for the set of Turing machines in the sense that given an encoding of any Turing machine asinput the universal Turing machine simulates it. We introduce the concept of universality for reactive systems and construct a CCS processuniversal...

  20. The Australian National University

    Institute of Scientific and Technical Information of China (English)

    李琳

    2007-01-01

    The Australian National University was established by Federal Parliament in 1946 with a mission to bring credit to the nation and to be one of the world’s great universities.It was the country’s only full-time research university at the time,and had no undergraduate teaching responsibilities.

  1. INTELLECTUAL PROPERTY AND UNIVERSITIES

    OpenAIRE

    Papin-Ramcharan, Jennifer

    2005-01-01

    Universities and other institutions of higher learning like the University of the West Indies (UWI), are in the business of creating intellectual property. This article describes the importance of intellectual property protection particularly for developing countries. It also gives the experience of The St. Augustine Campus of the University of the West Indies with intellectual property protection.

  2. Session Types = Intersection Types + Union Types

    CERN Document Server

    Padovani, Luca

    2011-01-01

    We propose a semantically grounded theory of session types which relies on intersection and union types. We argue that intersection and union types are natural candidates for modeling branching points in session types and we show that the resulting theory overcomes some important defects of related behavioral theories. In particular, intersections and unions provide a native solution to the problem of computing joins and meets of session types. Also, the subtyping relation turns out to be a pre-congruence, while this is not always the case in related behavioral theories.

  3. Personality types of dentists.

    Science.gov (United States)

    Westerman, G H; Grandy, T G; Erskine, C G

    1991-12-01

    The Myers-Briggs Type Indicator (MBTI) was used to determine the personality types of dental graduates, 1964-1984, from Creighton University, School of Dentistry. The MBTI reveals the strength and nature of preferences along four dimensions: extraversion-introversion, sensing-intuition, thinking-feeling, and judging-perceptive. In sample (N = 472), four personality types: ISTJ (108), ESTJ (66), ISFJ (48), and ENTJ (37), accounted for 54.9% (N = 259) of the dentists. The remaining 45.1% (N = 213) were divided among 12 personality types without any type accounting for more than 6.1% (N = 29). Comparisons with a general population (N = 9,320) revealed that the dental sample included more introverts (58.9%), thinkers (65.9%) and judgers (75.0%). The implications of personality characteristics, as applied to dentistry through communication patterns, relationships with co-workers and management styles were discussed.

  4. The internal structure of university students’ keyboard skills

    Directory of Open Access Journals (Sweden)

    Grabowski, Joachim

    2008-01-01

    Full Text Available Nowadays, university students do not necessarily acquire their typing skills through systematic touch-typing training, like professional typists. But then, how are the resulting typing skills structured? To reveal the composition of today’s typical typing skills, 32 university students performed on three writing tasks: copying from memory, copying from text, and generating from memory.Variables of keyboard operation that presumably reflect typing abilities and strategies, were recorded with ScriptLog, a keystroke logging software; these include typing speed, keyboard efficiency, and keyboard activity beyond keypresses that become visible in the final text. Factor analyses reveal three components of typing behavior per task. Their clearest interpretations relate to keyboard activity/efficiency and typing speed. Across tasks, typing speed is the strongest individually stable facet of keyboard operation. In summary, university students’ keyboard behavior is a multi-faceted skill rather than the mere mastery of a touch-typing method.

  5. Clusters propel German universities

    Science.gov (United States)

    Banks, Michael

    2009-10-01

    The annual publication of a list of the world's top universities by the Times Higher Education newspaper must make grim reading for researchers in Germany. The list, drawn up in partnership with education provider Quacquarelli Symonds, last year included only three German universities in the top 100 - Heidelberg in 57th spot, followed by the Technical University (TU) in Munich (78th) and the Ludwig-Maximilians-University (LMU), also in Munich, coming in a lowly 93rd. The US in contrast, has 37 of the top 100 universities, while the UK boasts 17.

  6. University Performance Management

    DEFF Research Database (Denmark)

    For the last two decades the Danish Universities have felt the impact of the international trend towards implementation of New Public Management. The results are seen in the implementation of new hierarchical governance structures and contractual governance system including market based...... quantitative measurement systems for resource allocation and performance evaluation. Compared to other countries the changes in performance measurements and governance of the Danish universities are radical and the Minister of Science heralded them as "the greatest change in university management since...... of researchers, university management, and the universities themselves....

  7. The expanding universe

    CERN Document Server

    Lew, Kristi

    2011-01-01

    People have always been fascinated with the stars above and the universe that contains them. Over the years, astronomers have developed numerous theories to explain how the universe began, how it works, and what its ultimate fate will be. But all of the scientists' questions are far from answered. The Expanding Universe goes beyond the creation of the universe to explain how scientists think the universe works, grows, and changes, including what great thinkers Isaac Newton and Albert Einstein had to say about its fate. Readers will also learn about how researchers are slowly shedding light on

  8. Evolution of Universal Grammar

    Science.gov (United States)

    Nowak, Martin A.; Komarova, Natalia L.; Niyogi, Partha

    2001-01-01

    Universal grammar specifies the mechanism of language acquisition. It determines the range of grammatical hypothesis that children entertain during language learning and the procedure they use for evaluating input sentences. How universal grammar arose is a major challenge for evolutionary biology. We present a mathematical framework for the evolutionary dynamics of grammar learning. The central result is a coherence threshold, which specifies the condition for a universal grammar to induce coherent communication within a population. We study selection of grammars within the same universal grammar and competition between different universal grammars. We calculate the condition under which natural selection favors the emergence of rule-based, generative grammars that underlie complex language.

  9. The universe a biography

    CERN Document Server

    Gribbin, John

    2008-01-01

    The Universe: A Biography makes cosmology accessible to everyone. John Gribbin navigates the latest frontiers of scientific discovery to tell us what we really know about the history of the universe. Along the way, he describes how the universe began; what the early universe looked like; how its structure developed; and what emerged to hold it all together. He describes where the elements came from; how stars and galaxies formed; and the story of how life emerged. He even looks to the future: is the history of the universe going to end with a Big Crunch or a Big Rip.

  10. Perceptions of Students towards ICT Competencies at the University

    Science.gov (United States)

    Torres-Gastelú, Carlos Arturo; Kiss, Gábor

    2016-01-01

    The purpose of this study is to identify the perceptions of university students towards their ICT Competencies from two universities, one in Mexico and the other in Hungary. The research type is quantitative and exploratory. The instrument consists of 14 questions related to three types of competencies: Basic, Application and Ethical. The sample…

  11. Toy Model for Eternal Expanding Universe Driven by Quintessence

    Institute of Scientific and Technical Information of China (English)

    高长军; 沈有根

    2003-01-01

    Recent observations of microwave background and type Ⅰa supernovae (SNe Ia) suggest a space-flat and accelerated expansion Universe. On the other hand, observations of supernovae 1997ff reveal that the Universe has undergone a decelerating-accelerating process. Combining these two classes of observations, we present an eternal expanding Universe toy model driven by quintessence. In this picture, the Universe undergoes an endless sequence of accelerating-decelerating cycles.

  12. Computer game development education at university

    OpenAIRE

    Doughty, Mark

    2004-01-01

    This paper articulates some of the challenges for computer game development courses at university level. A typical course development of this type is described. The need to include creative methods alongside more formal software development methodologies as core elements of computer game education is proposed and placed within the context of an industry specific framework. The evolutionary nature of the computer game industry requires that computer game development programmes at university sh...

  13. Research on Two Types of Buffer Zone Impact on Surrounding Office Space Environment in Winter in Cold Climate Zone-a Fieldwork in Architectural Design Institute Building of Tsinghua University, Beijing

    Institute of Scientific and Technical Information of China (English)

    YeHao Song; JunJie Li; Ning Zhu; JiaLiang Wang; ShiMeng Hao

    2014-01-01

    Building buffer zone space is not only one of essential approaches for better mental quality of interior building space, but also an important factor that may influence interior thermal comfort and energy consumption. This study aims to analyze regulative advantages of buffer zone to the surrounding functional spaces. Based on a fieldwork test in a typical office building in cold climate zone in Beijing, China, the monitor data show interior physical performance in the Winter. The research selects two types of different buffer zones in the same building. One is a south⁃faced greenhouse which has large dimension with plenty of vegetation, and the other is a simple atrium in the middle of five floor building with mount of skylights. The factors and their influence to surrounding functional spaces and the whole building are found out from the comparisons of collected data by floor to floor monitor test on both buffer zones at the same time. The comparisons of two types of buffer zones conclude that the greenhouse is more effective to air quality regulation but not so clearly well⁃performed to thermal buffering as expected due to the dominate active central heating in the Winter. This fieldwork test results for building performance can be helpful for both architects and engineers in the early phase of sustainable design.

  14. Tipos, organização e visibilidade de informações em páginas iniciais de websites de universidades brasileiras / Types, organization, and visibility of information of brasilian universities website

    Directory of Open Access Journals (Sweden)

    Lígia Dias de Freitas

    2013-05-01

    Full Text Available Apresenta pesquisa realizada com o objetivo de investigar a relação entre o tipo de informação disponibilizada nas páginas iniciais de websites de universidades brasileiras e a forma como ela está organizada, especificamente: verificar a visibilidade dada a cada tipo de informação por meio da área utilizada nas páginas iniciais dos websites das universidades escolhidas; identificar a visão das universidades em relação a seus websites; e relacionar tipos de informação disponibilizadas e tipos de organização nas páginas iniciais dos websites das universidades. Para isto, o artigo discorre sobre Arquitetura de Informação, a presença das universidades na web e o papel de suas páginas iniciais. A motivação da pesquisa baseia-se na identificação de um padrão para as informações organizadas nos websites de universidades, visto que estes agregam conteúdo para diferentes públicos-alvo. As universidades escolhidas como objeto de pesquisa foram as dez primeiras brasileiras no Webometrics Ranking of World Universities, de julho de 2010. A metodologia consiste em analisar as capturas de telas das páginas iniciais e as respostas a três questões abertas feitas aos setores de comunicação das universidades. Os resultados mostram que o tipo de informação mais freqüente é o Administrativo e institucional e a organização predominante é por Assunto. Acredita-se que o método de análise aqui proposto é útil para o estudo de websites e pode ser aplicado a diferentes tipos de instituições.

  15. Universities scale like cities.

    Directory of Open Access Journals (Sweden)

    Anthony F J van Raan

    Full Text Available Recent studies of urban scaling show that important socioeconomic city characteristics such as wealth and innovation capacity exhibit a nonlinear, particularly a power law scaling with population size. These nonlinear effects are common to all cities, with similar power law exponents. These findings mean that the larger the city, the more disproportionally they are places of wealth and innovation. Local properties of cities cause a deviation from the expected behavior as predicted by the power law scaling. In this paper we demonstrate that universities show a similar behavior as cities in the distribution of the 'gross university income' in terms of total number of citations over 'size' in terms of total number of publications. Moreover, the power law exponents for university scaling are comparable to those for urban scaling. We find that deviations from the expected behavior can indeed be explained by specific local properties of universities, particularly the field-specific composition of a university, and its quality in terms of field-normalized citation impact. By studying both the set of the 500 largest universities worldwide and a specific subset of these 500 universities--the top-100 European universities--we are also able to distinguish between properties of universities with as well as without selection of one specific local property, the quality of a university in terms of its average field-normalized citation impact. It also reveals an interesting observation concerning the working of a crucial property in networked systems, preferential attachment.

  16. Universal features of amorphous plasticity

    Science.gov (United States)

    Budrikis, Zoe; Castellanos, David Fernandez; Sandfeld, Stefan; Zaiser, Michael; Zapperi, Stefano

    2017-07-01

    Plastic yielding of amorphous solids occurs by power-law distributed deformation avalanches whose universality is still debated. Experiments and molecular dynamics simulations are hampered by limited statistical samples, and although existing stochastic models give precise exponents, they require strong assumptions about fixed deformation directions, at odds with the statistical isotropy of amorphous materials. Here, we introduce a fully tensorial, stochastic mesoscale model for amorphous plasticity that links the statistical physics of plastic yielding to engineering mechanics. It captures the complex shear patterning observed for a wide variety of deformation modes, as well as the avalanche dynamics of plastic flow. Avalanches are described by universal size exponents and scaling functions, avalanche shapes, and local stability distributions, independent of system dimensionality, boundary and loading conditions, and stress state. Our predictions consistently differ from those of mean-field depinning models, providing evidence that plastic yielding is a distinct type of critical phenomenon.

  17. Reconfigurable Mixed Mode Universal Filter

    Directory of Open Access Journals (Sweden)

    Neelofer Afzal

    2014-01-01

    Full Text Available This paper presents a novel mixed mode universal filter configuration capable of working in voltage and transimpedance mode. The proposed single filter configuration can be reconfigured digitally to realize all the five second order filter functions (types at single output port. Other salient features of proposed configuration include independently programmable filter parameters, full cascadability, and low sensitivity figure. However, all these features are provided at the cost of quite large number of active elements. It needs three digitally programmable current feedback amplifiers and three digitally programmable current conveyors. Use of six active elements is justified by introducing three additional reduced hardware mixed mode universal filter configurations and its comparison with reported filters.

  18. Reliability of agriculture universal joint shafts based on temperature measuring in universal joint bearing assemblies

    Energy Technology Data Exchange (ETDEWEB)

    Asonja, A.; Desnica, E.

    2015-07-01

    This paper presents a research into reliability calculations of agriculture double universal joint shafts based on temperature measuring in cardan-type universal joint bearing assemblies. Special laboratory equipment was developed for this research which is presented in the paper. The objective of this research was to test the real life span of universal joint shafts in the laboratory and in field, to obtain the results which can be used to improve the reliability of universal joint shafts. If the presented research were used along with maintenance measures recommended in the paper and with proper use, the level of reliability of the shafts would be 2.1 times higher. The presented results of the research showed that needle bearings, i.e. bearing assemblies of the joints, are the most critical elements on universal joint shafts and are possible causes of their lower reliability. The second universal joint is the part with the lowest reliability in the observed technical system. . (Author)

  19. Torsion as a source of expansion in a Bianchi type-I universe in the self-consistent Einstein-Cartan theory of a perfect fluid with spin density

    Science.gov (United States)

    Bradas, James C.; Fennelly, Alphonsus J.; Smalley, Larry L.

    1987-01-01

    It is shown that a generalized (or 'power law') inflationary phase arises naturally and inevitably in a simple (Bianchi type-I) anisotropic cosmological model in the self-consistent Einstein-Cartan gravitation theory with the improved stress-energy-momentum tensor with the spin density of Ray and Smalley (1982, 1983). This is made explicit by an analytical solution of the field equations of motion of the fluid variables. The inflation is caused by the angular kinetic energy density due to spin. The model further elucidates the relationship between fluid vorticity, the angular velocity of the inertially dragged tetrads, and the precession of the principal axes of the shear ellipsoid. Shear is not effective in damping the inflation.

  20. Selling University Reform: The University of Melbourne and the Press

    Science.gov (United States)

    Potts, Anthony

    2012-01-01

    Since the advent of the "Times Higher Education Supplement World University Rankings" and the "Academic Rankings of World Universities" by Shanghai Jiao Tong University, some Australian universities have become especially concerned with being ranked among the 100 leading universities. The University of Melbourne, Australia's…

  1. Selling University Reform: The University of Melbourne and the Press

    Science.gov (United States)

    Potts, Anthony

    2012-01-01

    Since the advent of the "Times Higher Education Supplement World University Rankings" and the "Academic Rankings of World Universities" by Shanghai Jiao Tong University, some Australian universities have become especially concerned with being ranked among the 100 leading universities. The University of Melbourne, Australia's second oldest…

  2. Universal scalings of universal scaling exponents

    Energy Technology Data Exchange (ETDEWEB)

    Llave, Rafael de la [Department of Mathematics, University of Texas, Austin, TX 78712 (United States); Olvera, Arturo [IIMAS-UNAM, FENOMEC, Apdo. Postal 20-726, Mexico DF 01000 (Mexico); Petrov, Nikola P [Department of Mathematics, University of Oklahoma, Norman, OK 73019 (United States)

    2007-06-08

    In the last decades, renormalization group (RG) ideas have been applied to describe universal properties of different routes to chaos (quasi-periodic, period doubling or tripling, Siegel disc boundaries, etc). Each of the RG theories leads to universal scaling exponents which are related to the action of certain RG operators. The goal of this announcement is to show that there is a principle that organizes many of these scaling exponents. We give numerical evidence that the exponents of different routes to chaos satisfy approximately some arithmetic relations. These relations are determined by combinatorial properties of the route and become exact in an appropriate limit. (fast track communication)

  3. University Performance Management

    DEFF Research Database (Denmark)

    quantitative measurement systems for resource allocation and performance evaluation. Compared to other countries the changes in performance measurements and governance of the Danish universities are radical and the Minister of Science heralded them as "the greatest change in university management since...... the founding of Copenhagen University in 1479". The changes took place with surprisingly little resistance from university scholars. The articles in this anthology investigate the origins and rationales for the silent managerial revolution at Danish Universities and the radical implications for the identity......For the last two decades the Danish Universities have felt the impact of the international trend towards implementation of New Public Management. The results are seen in the implementation of new hierarchical governance structures and contractual governance system including market based...

  4. Rectors of European universities

    CERN Multimedia

    Maximilien Brice

    2003-01-01

    Several rectors of European universities visited CERN recently while in Geneva for a conference on coordination between their institutions. The visit began with a welcome by Roger Cashmore, CERN Director of Collider Programmes,and continued with tours of CMS, ALICE and the LHC magnet assembly hall. Photos 01, 02: The visitors in the ALICE assembly hall: (left to right) Dr. Raymond Werlen, Deputy Secretary-General of the Conference of Rectors of Swiss Universities; visit guide Prof. Alain Blondel, Department of Nuclear and Corpuscular Physics, University of Geneva; Prof. Adriano Pimpão, Rector of the University of Algarve, President of the Council of Rectors of Portuguese Universities; Prof. Jean-Pierre Finance, Conference of University Presidents, France; Prof. Jean-Paul Lehners, Vice-President of the Centre Universitaire, Luxemburg.

  5. University Students Deceived on Network:Types, Reasons and Countermeasures%大学生网络受骗的类型、原因及对策研究

    Institute of Scientific and Technical Information of China (English)

    肖谢; 黄江英

    2015-01-01

    Research on Internet fraud theorists focused on the special nature of the network, much of the area and dupe Characteristics of fraud.Campus growing incidence of online fraud, violations of property has become a large malignant tumor Students reason, including college students likely leaking information dense network covering fraud, college students inexperienced deep and diverse and thorough network scam, and many college students demand and online scams match up, it is difficult to eradicate the silent majority of college students and online fraud.Current laws and regu-lations related to Internet fraud have no special provisions, so the universities should adopt appropriate means to divide the online fraud and provide prevention for the students, because they are the main places of learning for students.%理论界对网络诈骗的研究主要集中在网络的特殊性上,对诈骗区域和受骗人特点研究不多.校园网络诈骗事件层出不穷,已经成为侵犯大学生财产安全的一大毒瘤,究其原因,主要包括大学生信息容易泄漏与网络诈骗行为的密集覆盖,大学生涉世不深与网络诈骗手法多样且周密,大学生多种需求与网络诈骗投其所好,大学生的大多数沉默与网络诈骗的难以根除.当前相关法律法规没有对网络诈骗作专门规定,作为学生生活学习主要场所的学校,应从手段、行为方式、财产属性和对象上对校园网络诈骗进行类型化区分,采取有针对性的手段予以防控.

  6. 新形势下高校学习型党组织建设的若干思考%Some Profound Thinking on the Construction of Learning-type Communist Party of China in Universities under the New Situation

    Institute of Scientific and Technical Information of China (English)

    万云波

    2011-01-01

    建设学习型党组织是建设中国特色高等教育的必然要求,是履行和实现高校历史责任的必然要求。学习型党组织不是“学习”和“党组织”的简单叠加。而是二者有机融合而成的一种质的飞跃。在高校建设学习型党组织,对于和谐校园建设、促进党员的全面发展、加强党组织建设、推动高等教育事业发展等具有不可替代的重要作用。加强高校学习型党组织建设,必须加强宣传、完善制度、优化载体、注重实践,使认识、措施、保障和落实等到位,把学〉-7的成果转化为学校发展的动力。%It is naturally required to construct the learning Party organization in the Chinese-featured high education construction and in realizing its historic responsibility. The learning Party organization does not merely refer to the simple meaning of learning and the Party organization, but mean the qualitative leap after the integration of the two parts. It is irreplaceable to construct the learning Party organization in constructing the harmonious campus, wholly promoting the Party members' quality, enhancing the Party building and advancing the high education career. In constructing the learning Party organization, it is necessary to strengthen propaganda, perfect institution, optimize carrier, highlight practice and put recognition, measures and guarantee in place so as to transform the learning achievements into the impetus for the university development.

  7. Thermodynamics and emergent universe

    CERN Document Server

    Ghosh, Saumya

    2016-01-01

    We show that in the isentropic scenario the first order thermodynamical particle creation model gives an emergent universe solution even when the chemical potential is non-zero. However there exists no emergent universe scenario in the second order non-equilibrium theory for the particle creation model. We then point out a correspondence between the particle creation model with barotropic equation of state and the equation of state giving rise to an emergent universe without particle creation in spatially flat FRW cosmology.

  8. Inhomogeneous generalizations of Bianchi type VIh models with perfect fluid

    Science.gov (United States)

    Roy, S. R.; Prasad, A.

    1991-07-01

    Inhomogeneous universes admitting an Abelian G2 of isometry and filled with perfect fluid have been derived. These contain as special cases exact homogeneous universes of Bianchi type VIh. Many of these universes asymptotically tend to homogeneous Bianchi VIh universes. The models have been discussed for their physical and kinematical behaviors.

  9. College and University Challenge

    Science.gov (United States)

    This EPA's Green Power Partnership Challenge tracks and recognizes U.S. colleges and universities recognizes the largest single green power users within each participating collegiate athletic conferences.

  10. University Technology Transfer

    Directory of Open Access Journals (Sweden)

    Mike Cox

    2004-09-01

    Full Text Available This article describes the experiences and general observations of the author at Heriot-Watt University and concerns the transfer of university technology for the purposes of commercialisation. Full commercial exploitation of a university invention generally requires transferring that technology into the industrial arena, usually either by formation of a new company or licensing into an existing company. Commercialisation activities need to be carried out in unison with the prime activities of the university of research and teaching. Responsibility for commercialising university inventions generally rests with a specific group within the university, typically referred to as the technology transfer group. Each technology transfer should be considered individually and appropriate arrangements made for that particular invention. In general, this transfer process involves four stages: identification, evaluation, protection and exploitation. Considerations under these general headings are outlined from a university viewpoint. A phased approach is generally preferred where possible for the evaluation, protection and exploitation of an invention to balance risk with potential reward. Evaluation of the potential opportunity for a university invention involves essentially the same considerations as for an industrial invention. However, there are a range of commercial exploitation routes and potential deals so that only general guidelines can be given. Naturally, the final deal achieved is that which can be negotiated. The potential rewards for the university and inventor are both financial (via licensing income and equity realisation and non-financial.

  11. University of Washington

    Data.gov (United States)

    Federal Laboratory Consortium — The theme of the University of Washington based Center for Child Environmental Health Risks Research (CHC) is understanding the biochemical, molecular and exposure...

  12. Type-indexed data types

    OpenAIRE

    Hinze, R.; Jeuring, J.T.; Löh, A.

    2004-01-01

    A polytypic function is a function that can be instantiated on many data types to obtain data type specific functionality. Examples of polytypic functions are the functions that can be derived in Haskell, such as show, read, and ‘==’.More advanced examples are functions for digital searching, pattern matching, unification, rewriting, and structure editing. For each of these problems, we not only have to define polytypic functionality, but also a type-indexed data type: a data type that is con...

  13. Supersymmetric Gödel Universes in string theory

    DEFF Research Database (Denmark)

    Harmark, Troels; Takayanagi, Tadashi

    2003-01-01

    Supersymmetric backgrounds in string and M-theory of the Gödel Universe type are studied. We find several new Gödel Universes that preserve up to 20 supersymmetries. In particular, we obtain an interesting Gödel Universe in M-theory with 18 supersymmetries which does not seem to be dual to a pp......-wave. We show that not only T-duality but also the type-IIA/M-theory S-duality can give supersymmetric Gödel Universes from pp-waves. We find solutions that can interpolate between Gödel Universes and pp-waves. We also compute the string spectrum on two type IIA Gödel Universes. Furthermore, we obtain...

  14. Supersymmetric Gödel Universes in string theory

    DEFF Research Database (Denmark)

    Harmark, Troels; Takayanagi, Tadashi

    2003-01-01

    Supersymmetric backgrounds in string and M-theory of the Gödel Universe type are studied. We find several new Gödel Universes that preserve up to 20 supersymmetries. In particular, we obtain an interesting Gödel Universe in M-theory with 18 supersymmetries which does not seem to be dual to a pp......-wave. We show that not only T-duality but also the type-IIA/M-theory S-duality can give supersymmetric Gödel Universes from pp-waves. We find solutions that can interpolate between Gödel Universes and pp-waves. We also compute the string spectrum on two type IIA Gödel Universes. Furthermore, we obtain...

  15. General Topology of the Universe

    OpenAIRE

    Pandya, Aalok

    2002-01-01

    General topology of the universe is descibed. It is concluded that topology of the present universe is greater or stronger than the topology of the universe in the past and topology of the future universe will be stronger or greater than the present topology of the universe. Consequently, the universe remains unbounded.

  16. 高校构建离退休学习型党支部的实践思考%Practical Reflections on the Establishment of Study-type Party Branches of the Retired in Colleges and Universities

    Institute of Scientific and Technical Information of China (English)

    潘美金

    2011-01-01

    当前,随着高校离退休党支部出现的新情况、新问题,在高校推动离退休学习型党支部建设,对于发扬党的优良传统,维护稳定大局,具有十分重要的作用。为此,在为老人本服务中落实学习型党支部建设的常态化;在真情凝聚人心中推动学习型党支部建设的目标化;在宣传典型示范中完善学习型党支部建设的制度化。%With the emergence of some new problems in the Party branches of the retired,and,for the development of the CPC's fine tradition and the maintenance of a stable society,it is essential to promote the construction of a Study-type Party Branches of the Reti

  17. Research and Exploration of Computer Applied-Type Talents Training Mode in the Private University%民办高校计算机应用型人才培养模式研究与探索

    Institute of Scientific and Technical Information of China (English)

    向亦斌

    2014-01-01

    Chinese higher education has been focused on developing basic scientific research and teaching expertise, but doesn't pay enough atten-tion to how to meet the needs of industrial and mining enterprises. According to characteristics of the non-governmental institutions, com-bining network engineering specialty in application-oriented research and exploration on the mode of talent cultivation. Proposes reforma-tion of computer applied-type talents cultivation and practice of talent training model of architecture, links teaching system and teaching reformation of the basic framework and method.%我国高等教育一直侧重于培养基础科学研究和教学专门人才,对如何适应工矿企业的需要没有给予足够的重视。根据民办高校的特点,结合在网络工程专业应用型人才培养模式上的研究与探索,提出计算机专业培养应用型人才的改革思路、人才培养模式总体结构、实践环节教学体系基本框架及教学改革的方式方法。

  18. Blood Types

    Science.gov (United States)

    ... blood, safe blood transfusions depend on careful blood typing and cross-matching. The ABO Blood Group System ... that provided by the ABO positive/negative blood typing. For example, sometimes if the donor and recipient ...

  19. Blood typing

    Science.gov (United States)

    A blood sample is needed. The test to determine your blood group is called ABO typing. Your blood sample is mixed with antibodies against type A and B blood. Then, the sample is checked to see whether ...

  20. Marketing University Outreach Programs.

    Science.gov (United States)

    Foster, Ralph S., Jr., Ed.; And Others

    A collection of 12 essays and model program descriptions addresses issues in the marketing of university extension, outreach, and distance education programs. They include: (1) "Marketing and University Outreach: Parallel Processes" (William I. Sauser, Jr. and others); (2) "Segmenting and Targeting the Organizational Market"…

  1. Talent Management for Universities

    Science.gov (United States)

    Bradley, Andrew P.

    2016-01-01

    This paper explores human resource management practices in the university sector with a specific focus on talent pools and talent management more generally. The paper defines talent management in the context of the university sector and then explores its interdependence with organisational strategy, the metrics used to measure academic performance…

  2. The University of Oxford

    Institute of Scientific and Technical Information of China (English)

    郭大任

    2007-01-01

    The University of Oxford, located in the city of Oxford, England, is the oldest university in the English-speaking world. Oxford was a leading center of learning throughout the Middle Ages. It has maintained an outstanding reputation, especially in the classics, theology, and political science.

  3. Regionalism in Scottish Universities

    Science.gov (United States)

    Hutchison, Dougal

    1976-01-01

    It is well-known that Scottish universities are highly local institutions and that over two-fifth of Scottish university students live at home. Attempts to ascertain if this regionalism has relaxed over the past twenty years with student grant regulations, improvement in communications and the increasing affluence of today's society. (Author/RK)

  4. Universe of constant

    Science.gov (United States)

    Yongquan, Han

    2016-10-01

    The ideal gas state equation is not applicable to ordinary gas, it should be applied to the Electromagnetic ``gas'' that is applied to the radiation, the radiation should be the ultimate state of matter changes or initial state, the universe is filled with radiation. That is, the ideal gas equation of state is suitable for the Singular point and the universe. Maybe someone consider that, there is no vessel can accommodate radiation, it is because the Ordinary container is too small to accommodate, if the radius of your container is the distance that Light through an hour, would you still think it can't accommodates radiation? Modern scientific determinate that the radius of the universe now is about 1027 m, assuming that the universe is a sphere whose volume is approximately: V = 4.19 × 1081 cubic meters, the temperature radiation of the universe (cosmic microwave background radiation temperature of the universe, should be the closest the average temperature of the universe) T = 3.15k, radiation pressure P = 5 × 10-6 N / m 2, according to the law of ideal gas state equation, PV / T = constant = 6 × 1075, the value of this constant is the universe, The singular point should also equal to the constant Author: hanyongquan

  5. Universals, Typologies and Interlanguage.

    Science.gov (United States)

    Eckman, Fred R.

    Two questions are raised: Is it possible to characterize the notion human language in terms of absolute and typological universals? And if so, what is the relationship between these universals and those formulated for primary languages? Given these questions, the purpose of the paper is to: (1) investigate some of the methodological considerations…

  6. Universal Design Problem Solving

    Science.gov (United States)

    Sterling, Mary C.

    2004-01-01

    Universal design is made up of four elements: accessibility, adaptability, aesthetics, and affordability. This article addresses the concept of universal design problem solving through experiential learning for an interior design studio course in postsecondary education. Students' experiences with clients over age 55 promoted an understanding of…

  7. TEACHERS OF TIBET UNIVERSITY

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Tibet University isgaining fame in andoutside China as itsgraduates are playingan increasingly impor-tant role in variousfronts of work.Whileenjoying the fruits,onewill never forget thosewho have grown thefruit trees.In the caseof the university,"thosewho grow the fruittrees" are its teachers.

  8. Slippery Rock University

    Science.gov (United States)

    Arnhold, Robert W.

    2008-01-01

    Slippery Rock University (SRU), located in western Pennsylvania, is one of 14 state-owned institutions of higher education in Pennsylvania. The university has a rich tradition of providing professional preparation programs in special education, therapeutic recreation, physical education, and physical therapy for individuals with disabilities.…

  9. Universality in heterogeneous catalysis

    DEFF Research Database (Denmark)

    Nørskov, Jens Kehlet; Pedersen, Thomas Bligaard; Logadottir, Ashildur

    2002-01-01

    Based on an extensive set of density functional theory calculations it is shown that for a class of catalytic reactions there is a universal, reactant independent relation between the reaction activation energy and the stability of reaction intermediates. This leads directly to a universal relati...

  10. Understanding University Technology Transfer

    Science.gov (United States)

    Association of American Universities, 2011

    2011-01-01

    Federal government agencies provide about $33 billion a year to universities to conduct scientific research. That continuing investment expands human knowledge and helps educate the next generation of science and technology leaders. New discoveries from university research also form the basis for many new products and processes that benefit the…

  11. Universe opacity and EBL

    CERN Document Server

    Vavrycuk, Vaclav

    2016-01-01

    The observed extragalactic background light (EBL) is affected by light attenuation due to absorption of light by galactic and intergalactic dust in the Universe. Even galactic opacity of 10-20 percent and minute universe intergalactic opacity of $0.01\\,\\mathrm{mag}\\,h\\,\\mathrm{Gpc}^{-1}$ at the local Universe have a significant impact on the EBL because obscuration of galaxies and density of intergalactic dust increase with redshift as $\\left(1+z\\right)^3$. Consequently, intergalactic opacity increases and the Universe becomes considerably opaque at $z > 3$. Adopting realistic values for galactic and intergalactic opacity, the estimates of the EBL for the expanding dusty universe are close to observations. The luminosity density evolution fits well measurements. The model reproduces a steep increase of the luminosity density at $z3.5$.

  12. The holographic universe

    CERN Document Server

    Talbot, Michael

    1991-01-01

    'There is evidence to suggest that our world and everything in it - from snowflakes to maple trees to falling stars and spinning electrons - are only ghostly images, projections from a level of reality literally beyond both space and time.' This is the astonishing idea behind the holographic theory of the universe, pioneered by two eminent thinkers: physicist David Bohm, a former protege of Albert Einstein, and quantum physicist Karl Pribram. The holographic theory of the universe encompasses consciousness and reality as we know them, but can also explain such hitherto unexplained phenomena as telepathy, out-of-body experiences and even miraculous healing. In this remarkable book, Michael Talbot reveals the extraordinary depth and power of the holographic theory of the universe, illustrating how it makes sense of the entire range of experiences within our universe - and in other universes beyond our own.

  13. Universities Scale Like Cities

    CERN Document Server

    van Raan, Anthony F J

    2012-01-01

    Recent studies of urban scaling show that important socioeconomic city characteristics such as wealth and innovation capacity exhibit a nonlinear, particularly a power law scaling with population size. These nonlinear effects are common to all cities, with similar power law exponents. These findings mean that the larger the city, the more disproportionally they are places of wealth and innovation. Local properties of cities cause a deviation from the expected behavior as predicted by the power law scaling. In this paper we demonstrate that universities show a similar behavior as cities in the distribution of the gross university income in terms of total number of citations over size in terms of total number of publications. Moreover, the power law exponents for university scaling are comparable to those for urban scaling. We find that deviations from the expected behavior can indeed be explained by specific local properties of universities, particularly the field-specific composition of a university, and its ...

  14. EL ESTILO DOCENTE UNIVERSITARIO EN RELACIÓN AL TIPO DE CLASE Y A LA DISCIPLINA ENSEÑADA/ TEACHING STYLES AT UNIVERSITY: QUALITATIVE AND QUANTITATIVE ANALYSIS IN TWO DISCIPLINES TAUGHT AND TWO CLASSES’ TYPES

    Directory of Open Access Journals (Sweden)

    Nestor Roselli***

    2010-03-01

    Full Text Available RESUMENEl presente artículo aborda los resultados obtenidos a partir de la utilización de una planilla de observación de clases endos casos paradigmáticos: una cátedra de Ciencias Humanas y otra de Ciencias Exactas. El instrumento permitió registrar, apartir de las verbalizaciones públicas emitidas y los recursos didácticos utilizados, el estilo docente de los profesoresobservados (Jefe de Cátedra y Auxiliar, en cada caso. El análisis de los datos se hizo en dos direcciones: relacionando elestilo docente con los tipos de clases (teóricas y prácticas y las disciplinas que enseñan (Ciencias Humanas o Exactas. Losresultados muestran que existen diferencias en el estilo docente según el tipo de clase y según la disciplina enseñada. Lasprimeras tienen que ver con clases más magistrales o participativas, según que las clases sean teóricas o prácticas; lassegundas conciernen al carácter más discursivo de la enseñanza de asignatura humanística y, más ligada a imágenes, en elcaso de epistemes exactas.ABSTRACTThis paper shows the results obtained from a class observation instrument in two different cases: One in a HumanScience class and the other in an Exact Science class. The tool registered, from the oral verbal expressions and the learningresources used as well, the teaching styles of the professors observed (chief of class and auxiliary in each case. The dataanalysis was done in two ways: by relating the teaching style to the types of classes (theoretical and practical and thesubjects taught (Human Sciences or Exact Sciences. Results show differences between the teaching style according to thetype of class and according to the subject taught. The first ones deal with classical lectures or based on students activitieseither theoretical or practical; the other ones are concerned to the discursive teaching of the Humanistic subject and closerto images, as in the case of exact epistemes.

  15. Practice and Research on the Construction of the Information and Computing Science of the Application-Type University%应用型本科院校信息与计算科学专业建设的实践与研究

    Institute of Scientific and Technical Information of China (English)

    孙丽英; 周雪刚; 谢家全; 刘美春

    2011-01-01

    应用型本科院校的信息与计算科学专业,由于办学历史较短,在专业内涵、专业定位、人才培养方向、课程体系构建、职业导向等方面存在诸多问题。结合教育部有关信息与计算科学专业建设的要求以及应用型本科院校的行业背景,在多年教学实践的基础上,提出解决这些问题的有效对策和举措:同时提出该专业彰显应用特色的课程体系构建与实施的改革思路。%For the information and computing science of the application-type university, there are a lot of questions in the professional direction of connotations, professional orientation and training, curriculum building and career-oriented because of the short history of running. Combined the construction requirements of the Education Ministry about the information and computing sci- ence with the industry background of application-type university, puts forward effective strate- gies to solve these issues on the basis of years of teaching practice. As well as presents the im- provement of the construction and implementation of the curriculum system which shows its professional characteristics.

  16. Exit Tickets Open the Door to University Learning

    Directory of Open Access Journals (Sweden)

    Angela Danley, EdD

    2016-08-01

    Full Text Available Four instructors from a mid-western university implemented exit tickets in their university courses. The exit tickets were based on Marzano’s (2012 four types of exit tickets and were analyzed for patterns. Faculty completed a journal to reflect on what was learned examining the exit tickets. A survey was completed by both instructors and university students to determine the benefits of the use of exit tickets as a formative assessment at the university. Researchers share the processes used for implementing exit tickets and the results of the data collected along with implications for the use of exit tickets at the university.

  17. Type inference for correspondence types

    DEFF Research Database (Denmark)

    Hüttel, Hans; Gordon, Andy; Hansen, Rene Rydhof

    2009-01-01

    We present a correspondence type/effect system for authenticity in a π-calculus with polarized channels, dependent pair types and effect terms and show how one may, given a process P and an a priori type environment E, generate constraints that are formulae in the Alternating Least Fixed-Point (A...

  18. The First Modern University: The University of Birmingham

    Science.gov (United States)

    Arthur, James

    2017-01-01

    The University of Birmingham was planned, advanced and established with both national and German models of a University in mind. Civic reasons for the planning of the University need to be viewed within a broader motivational context. Even with a strong sense of civic place, the University was conceived as a modern University with multiple…

  19. Universal portfolios generated by weakly stationary processes

    Science.gov (United States)

    Tan, Choon Peng; Pang, Sook Theng

    2014-12-01

    Recently, a universal portfolio generated by a set of independent Brownian motions where a finite number of past stock prices are weighted by the moments of the multivariate normal distribution is introduced and studied. The multivariate normal moments as polynomials in time consequently lead to a constant rebalanced portfolio depending on the drift coefficients of the Brownian motions. For a weakly stationary process, a different type of universal portfolio is proposed where the weights on the stock prices depend only on the time differences of the stock prices. An empirical study is conducted on the returns achieved by the universal portfolios generated by the Ornstein-Uhlenbeck process on selected stock-price data sets. Promising results are demonstrated for increasing the wealth of the investor by using the weakly-stationary-process-generated universal portfolios.

  20. Cosmic no hair for collapsing universes

    Energy Technology Data Exchange (ETDEWEB)

    Lidsey, James E [Astronomy Unit, School of Mathematical Sciences Queen Mary, University of London, Mile End Road, London E1 4NS (United Kingdom)

    2006-05-21

    It is shown that all contracting, spatially homogeneous, orthogonal Bianchi cosmologies that are sourced by an ultra-stiff fluid with an arbitrary and, in general, varying equation of state asymptote to the spatially flat and isotropic universe in the neighbourhood of the big crunch singularity. This result is employed to investigate the asymptotic dynamics of a collapsing Bianchi type IX universe sourced by a scalar field rolling down a steep, negative exponential potential. A toroidally compactified version of M*-theory that leads to such a potential is discussed and it is shown that the isotropic attractor solution for a collapsing Bianchi type IX universe is supersymmetric when interpreted in an 11-dimensional context.

  1. Entropy and the Typicality of Universes

    CERN Document Server

    Barbour, Julian; Mercati, Flavio

    2015-01-01

    The universal validity of the second law of thermodynamics is widely attributed to a finely tuned initial condition of the universe. This creates a problem: why is the universe atypical? We suggest that the problem is an artefact created by inappropriate transfer of the traditional concept of entropy to the whole universe. Use of what we call the relational $N$-body problem as a model indicates the need to employ two distinct entropy-type concepts to describe the universe. One, which we call entaxy, is novel. It is scale-invariant and decreases as the observable universe evolves. The other is the algebraic sum of the dimensionful entropies of branch systems (isolated subsystems of the universe). This conventional additive entropy increases. In our model, the decrease of entaxy is fundamental and makes possible the emergence of branch systems and their increasing entropy. We have previously shown that all solutions of our model divide into two halves at a unique `Janus point' of maximum disorder. This constitu...

  2. 高职本科与普通本科护生特质应对方式、人格特征和行为类型的比较研究%Comparative study on coping style,personality characteristics and behavior types of nursing students between higher vocational colleges of undergraduate and common universities

    Institute of Scientific and Technical Information of China (English)

    陆佩佩; 李红玉

    2016-01-01

    Objective:To probe into the differences of trait coping style,personality characteristics and behavior types of nursing students between higher vocational college of undergraduate and common university and put forward corresponding psychological nursing education program based on two groups of students’specific char-acteristics ,in order to promote the development of their mind and body.Methods:A total of 427 nursing students in grade 201 1 and 2012 from higher vocational of colleges of undergraduate and common university in Liaoning Medical University by using cluster sample.They were investigated through general information ques-tionnaire,Trait Coping Style Questionnaire (TCSQ),Eysenck Personality Questionnaire (EPQ)and behavior type questionnaire (TABQ).Results:In the trait coping style test,the score of positive coping style of higher vo-cational nursing undergraduates was higher than that in common universities,while the score of negative coping was lower than that in common universities;in the personality traits test,two dimension scores including intro-version and extroversion and concealing of higher vocational nursing undergraduates were higher than that in common university,while emotional stability score was lower;in the behavior type test,two dimension scores of TH and CH of higher vocational nursing undergraduates were higher than that in common universities.Conclu-sion:Higher vocational nursing undergraduates had more positive and optimistic attitudes to things,their char-acter was more extroverted,stronger ambition and acting more quickly,while their discipline was poor,and had more concealing;nursing students in common universities were prone to own negative,anxiety and even depres-sion and other emotions,but they were more patient,had better discipline,the degree of concealing was lower.%[目的]探讨高职本科与普通本科护理专业学生在特质应对方式、人格特征及行为类型方面的差异性,针对两个不同学生群

  3. Universities do more

    DEFF Research Database (Denmark)

    Hendricks, Vincent Fella

    2014-01-01

    In the public eye, universities are typically acknowledged for providing two kinds of services: education and research. But universities do much more—and with a long shelf life, too. Universities also promote classic virtues like to seize the day—carpe diem; dare to know—sapere aude; the value...... of hard work—semper ardens; and to hurry slowly with reflection—festina lente. Good old-fashioned Latin strong suits. The narrative of instilling these virtues is hardly ever advertised by academia. Why not? Partly because they sound almost archaic. But they don’t have to be—especially not in this digital...

  4. The Universal Recommender

    CERN Document Server

    Kunegis, Jérôme; Umbrath, Winfried

    2009-01-01

    We describe the Universal Recommender, a recommender system for semantic datasets that generalizes domain-specific recommenders such a content-based, collaborative, social, bibliographic, lexicographic, hybrid and other recommenders. In contrast to existing recommender systems, the Universal Recommender applies to any dataset that allows a semantic representation. We describe the scalable three-stage architecture of the Universal Recommender and its application to Internet Protocol Television (IPTV). To achieve good recommendation accuracy, several novel machine learning and optimization problems are identified. We finally give a brief argument supporting the need for machine learning recommenders.

  5. Galaxies & the universe

    CERN Document Server

    Homer, Charlene

    2007-01-01

    Get the big picture about Galaxies and our Universe. From the smallest particles of matter to the biggest star system, our universe is made up of all things that exist in space. Our resource takes you through the Milky Way Galaxy, Black Holes and Gravity, then on to Nebulae, Sources of Light and the Speed of Light, and finally to Quasars, the most distant objects in the universe. Written using simplified language and vocabulary, our resource presents science concepts in a way that makes them accessible to students and easier to understand. Comprised of reading passages, student activities for

  6. Cyberplagiarism in University Regulations

    Directory of Open Access Journals (Sweden)

    Santiago Cavanillas

    2008-12-01

    Full Text Available The article examines the legal framework for plagiarism, and its twofold nature of illicit appropriation (from the author of the plagiarized work and fraud (with regard to the target audience of the plagiarism. Based on these premises, academic cyberplagiarism is analysed as a form of plagiarism carried out using electronic tools in the university setting. The question of responsibility (who can regulate the legal consequences of plagiarism? before and after the Ley Orgánica de Universidades (organic law on universities, LOU is studied, as is the disciplinary handling of cyberplagiarism with the limited regulations currently in place at universities.

  7. Consciousness in the Universe

    Directory of Open Access Journals (Sweden)

    Khalil Chamcham

    2013-07-01

    Full Text Available So far we can identify at least three concepts within modern cosmology that bring into debate the question of consciousness in the universe: 1 Fine Tuning; 2 The Anthropic Principle and 3 The Multiverse. This does not exclude the question of the role of observer (i.e. consciousness in cosmology as developed within Quantum Physics: we observe the universe through quanta and any breakthrough in understanding the origin and nature of the universe will come only through a quantum theory of gravity […

  8. The Dark Universe Riddle

    CERN Document Server

    Capistrano, A J S

    2008-01-01

    In this work we review some of the theoretical efforts and experimental evidences related to Dark matter and Dark energy problems in the universe. These dilemmas show us how incomplete our knowledge of gravity is, and how our concepts about the universe must at least be revised. Mainly, on the Wilkinson Microwave Anisotropy Probe (WMAP) fifth year, the data indicates that more than 90% of the total energy density of the universe is dark. Here we discuss the impact of these phenomena imprint on gravitational and quantum field theory's standard history. Moreover, we point out some recent and upcoming projects on Cosmology in a quest to understand theses issues thoroughly.

  9. Universe of Particles

    CERN Multimedia

    CERN Video Productions

    2010-01-01

    The entire Universe is made up of particles. But where do they come from? What is the origin of the laws of nature? The permanent exhibition "Universe of Particles", installed on the ground floor of the Globe of Science and Innovation, invites you to discover CERN by taking you on a journey all the way back to the Big Bang. It will help you answer questions such as: What's the purpose of this research? How do you accelerate particles? How do you detect them? What are today's theories on matter and the Universe? How does this affect our daily life?

  10. The Interpretation of Universal Affirmative Propositions

    Science.gov (United States)

    Bucci, Wilma

    1978-01-01

    Children and undergraduate students were studied to expose "structure-neutral" interpretations of logical propositions involving universal affirmatives. Successes with true and false questions and with four different syllogistic forms having three content types were compared. Age-related differences in performance were discussed with…

  11. Internationalization in Practice in Japanese Universities.

    Science.gov (United States)

    Kawaguchi, Akiyoshi; Lander, Denis

    1997-01-01

    Reports results of a study of internationalization practices of Japanese four-year colleges and universities with majors in humanities, social sciences, and education. Sketches Japan's policy concerning internationalization and its translation into higher education practice in the areas of numbers of students involved, program types, program…

  12. TMDs, universality and factorization

    CERN Document Server

    D'Alesio, Umberto

    2011-01-01

    We present a short overview on transverse momentum dependent parton distribution and fragmentation functions, giving their partonic interpretation and ways to access them. We then discuss the issue of their universality and its connection to factorization in perturbative QCD.

  13. Universal router concept

    Science.gov (United States)

    Pesch, W. A.

    1970-01-01

    Portable universal router can cut holes of large diameter and irregular shapes, machine recesses, and drill holes with certain edge-distance limitations. Rectangular and round holes may be cut without a template.

  14. University/industry research

    Science.gov (United States)

    Bell, Peter M.

    The problems encountered in mixing industrial and university research goals can be major, but so can the benefits. The National Science Board (NSB) recently released a report on “University-Industry Research Relationships: Selected Studies” (U.S. Government Printing Office, Washington, DC, 1983). It is an analysis of the much-discussed new trend toward increased industrial funding of university research projects.University laboratories cannot generally solve industry's R&D problems. Success for the corporation in sponsoring academic research is realized in the value of cooperative research programs as training exercises for future industrial scientists. An occasional patent arising from such a project is considered an added benefit, not a primary goal.

  15. University of Southern California

    Data.gov (United States)

    Federal Laboratory Consortium — The focus of the University of Southern California (USC) Children''s Environmental Health Center is to develop a better understanding of how host susceptibility and...

  16. On Separate Universes

    CERN Document Server

    Dai, Liang; Schmidt, Fabian

    2015-01-01

    The separate universe conjecture states that in General Relativity a density perturbation behaves locally (i.e. on scales much smaller than the wavelength of the mode) as a separate universe with different background density and curvature. We prove this conjecture for a spherical compensated tophat density perturbation of arbitrary amplitude and radius in $\\Lambda$CDM. We then use Conformal Fermi Coordinates to generalize this result to scalar perturbations of arbitrary configuration and scale in a general cosmology with a mixture of fluids, but to linear order in perturbations. In this case, the separate universe conjecture holds for the isotropic part of the perturbations. The anisotropic part on the other hand is exactly captured by a tidal field in the Newtonian form. We show that the separate universe picture is restricted to scales larger than the sound horizons of all fluid components. We then derive an expression for the locally measured matter bispectrum induced by a long-wavelength mode of arbitrary...

  17. University College Hospital, Ibadan

    African Journals Online (AJOL)

    Pattern of semen analysis of male partners of infertile couples at the. University College ... Hospital, Ibadan, Nigeria, between 1st January 1990 and 31st. December, 1999. .... reproduction, pregnancy can now be accomplished in area where it.

  18. The European University Landscape

    DEFF Research Database (Denmark)

    Daraio, Cinzia; Bonaccorsi, Andrea; Geuna, Aldo

    2011-01-01

    This paper provides a new and systematic characterization of 488 universities, from 11 European countries: Finland, France, Germany, Hungary, Italy, Netherlands, Norway, Portugal, Spain, Switzerland and UK. Using micro indicators built on the integrated Aquameth database, we characterize...

  19. Perelman's Universal Audience.

    Science.gov (United States)

    Ray, John W.

    1978-01-01

    Examines the concept of the universal audience as the basic factor of Chaim Perelman's rhetorical theory and concludes that it is subject to the same criticism as Rousseau's general will and Kant's categorical imperative. (JMF)

  20. 2017 TRI University Challenge

    Science.gov (United States)

    Details about the 2017 TRI University Challenge, in which EPA is looking to academic institutions to help build a diverse portfolio of practical and replicable projects that benefit communities, the environment, academic institutions, and the TRI Program.

  1. The Universe and Life

    Directory of Open Access Journals (Sweden)

    Eduard Kazantsev

    2016-02-01

    Full Text Available This article discusses some of the unsolved problems of modern cosmology, which lead to the need to consider the role of living matter in the evolution of the universe. The author proposes the hy- pothesis of the emergence, in the process of evolution of the universe, “biological vacuum” (physical antipode, which has a purpose of improving physical matter until the appearance of living matter. Substantiates the idea that the “biological vacuum” in the “live” dark matter with the participation of a living organism as an intermediary. The model of a stationary universe, as the local group of galaxies, placed in a halo of “live” dark matter. At the end of the article the author predicts the final evolution of the physical universe (after the collapse of the physical fields and particles as the begin- ning of a new stage of evolution of the “live” dark matter.

  2. Institutional Strategies: Duke University.

    Science.gov (United States)

    Franklin, Phyllis

    1982-01-01

    The planning process, objectives, and procedures used by Duke's chancellor during the retrenchment process are summarized. The emphasis was placed on enhancing the university's strengths while reducing costs and on enlisting faculty support and assistance in the change process. (MSE)

  3. Burnout in university students

    National Research Council Canada - National Science Library

    Carmen Cecilia Caballero D; Edgar Breso Esteve; Orlando González Gutierréz

    2015-01-01

      In order to provide a better understanding and characterization of the nature of academic burnout in university students, a review of the concept, its evolution and extrapolation of the work context...

  4. Based on the characteristics of party members in colleges and universities to explore the operating mechanism of learning type party organization%基于高校党员特点的基层学习型组织运行机制探讨

    Institute of Scientific and Technical Information of China (English)

    李东风

    2014-01-01

    It is possible to explore the operating mechanism of the construction of learning type party organization through such four aspects assecurity mechanism,learning mechanism,incentive mechanism,evaluation and feed back mechanism by analy-sising the charalteristiss of party members in college and universities and dointing out the problems existing in the construction of learning type darty organization.%探讨高校学习型党组织机制建设,可以从分析高校党员的特点入手,从保障机制、学习机制、考核激励机制、评估反馈机制四个方面,探讨高校基层学习型党组织建设的全员化、常态化、有效化和长远化的机制建设,是对基层学习型组织建设一项有益的尝试。

  5. Einstein's static universe

    CERN Document Server

    Soares, Domingos Savio

    2012-01-01

    Einstein's static model is the first relativistic cosmological model. The model is static, finite and of spherical spatial symmetry. I use the solution of Einstein's field equations in a homogeneous and isotropic universe -- Friedmann's equation -- to calculate the radius of curvature of the model (also known as "Einstein's universe"). Furthermore, I show, using a Newtonian analogy, the model's mostly known feature, namely, its instability under small perturbations on the state of equilibrium.

  6. Universal Sampling Rate Distortion

    OpenAIRE

    Boda, Vinay Praneeth; Narayan, Prakash

    2017-01-01

    We examine the coordinated and universal rate-efficient sampling of a subset of correlated discrete memoryless sources followed by lossy compression of the sampled sources. The goal is to reconstruct a predesignated subset of sources within a specified level of distortion. The combined sampling mechanism and rate distortion code are universal in that they are devised to perform robustly without exact knowledge of the underlying joint probability distribution of the sources. In Bayesian as wel...

  7. Beyond universal precautions.

    OpenAIRE

    Osterman, J W

    1995-01-01

    Universal precautions have gained wide acceptance in the literature and are promoted by major health care regulatory bodies as a measure to prevent nosocomial transmission of bloodborne diseases. Nevertheless, Dr. James G. Wright and associates (see pages 1089 to 1095 of this issue) provide evidence of the infrequent use of universal precautions by surgeons in Toronto. Their findings are consistent with those of similar studies and point to the limitations of any safety approach that relies o...

  8. The Low Temperature Universe

    Science.gov (United States)

    Blandford, Roger; Simeon, Paul

    2009-12-01

    We are used to thinking of the universe as a hot place, full of bright stars, quasars, gamma ray bursts, and so on, emanating from a giant explosion-the Big Bang. However, the universe can also be a surprisingly cool place. It is permeated by a background radiation with a temperature close to that of liquid helium. This paper is based on a public lecture aimed at non-specialists.

  9. The universal access handbook

    CERN Document Server

    Stephanidis, Constantine

    2009-01-01

    In recent years, the field of Universal Access has made significant progress in consolidating theoretical approaches, scientific methods and technologies, as well as in exploring new application domains. Increasingly, professionals in this rapidly maturing area require a comprehensive and multidisciplinary resource that addresses current principles, methods, and tools. Written by leading international authorities from academic, research, and industrial organizations and nonmarket institutions, The Universal Access Handbook covers the unfolding scientific, methodological, technological, and pol

  10. Universal computer interfaces

    CERN Document Server

    Dheere, RFBM

    1988-01-01

    Presents a survey of the latest developments in the field of the universal computer interface, resulting from a study of the world patent literature. Illustrating the state of the art today, the book ranges from basic interface structure, through parameters and common characteristics, to the most important industrial bus realizations. Recent technical enhancements are also included, with special emphasis devoted to the universal interface adapter circuit. Comprehensively indexed.

  11. University Curricula in Nanoelectronics

    DEFF Research Database (Denmark)

    Bruun, Erik; Nielsen, Ivan Ring

    2009-01-01

    Nanotechnology is having increasing impact on university curricula in electrical engineering. The advent of nanotechnology brings about new possibilities in nanoelectronics, including increasingly complex systems on chip, sophisticated technology fusion between electronic devices and non-electron...... examples of state-of-the-art curricula from major European universities are described. The possibilities for sharing of teaching material through the web via the EC-sponsored EuroTraining program is described....

  12. Determining All Universal Tilers

    CERN Document Server

    Wang, David G L

    2011-01-01

    A universal tiler is a convex polyhedron whose every cross-section tiles the plane. In this paper, we introduce a certain slight-rotating operation for cross-sections of pentahedra. Based on a selected initial cross-section and by applying the slight-rotating operation suitably, we prove that a convex polyhedron is a universal tiler if and only if it is a tetrahedron or a triangular prism.

  13. On Universal Tilers

    CERN Document Server

    Wang, David G L

    2011-01-01

    A famous problem in discrete geometry is to find all monohedral plane tilers, which is still open to the best of our knowledge. This paper concerns with one of its variants that to determine all convex polyhedra whose every cross-section tiles the plane. We call such polyhedra universal tilers. We obtain that a convex polyhedron is a universal tiler only if it is a tetrahedron or a pentahedron.

  14. Open static Chaplygin universe

    CERN Document Server

    Khalatnikov, I M

    2003-01-01

    We apply the qualitative theory of dynamical systems to the study of the Chaplygin gas cosmological model. In difference to earlier works devoted to this model we give up sign restrictions on the choice of the sign of the energy density and on the parameters characterising initial conditions for a cosmological evolution. It appears that exists a static stable open universe filled with the Chaplygin gas. Besides exist universes where the acoustic waves have a velocity exceeding that of light in the vacuum.

  15. A Narrative Inquiry of Identity Formation of EFL University Teachers

    Science.gov (United States)

    Cheng, Xiangli

    2016-01-01

    Drawing on narrative inquiry, the present study aims to investigate the trajectory of identity formation of EFL university teachers. Two types of data are collected. One type comes from life histories of Hyland (2014), Nunan (2011) and Widdowson (2009), and the other type comes from semi-structured interviews with three excellent university…

  16. Type Tricks

    DEFF Research Database (Denmark)

    Beier, Sofie

    2017-01-01

    an expert as a typography professor, Sofie Beier knows exactly what the students need to know and how they can improve their skills. ‘Type Tricks’ is not only perfect for students, it also comes in handy for every type designer. It gives them the opportunity to reread information they were thaught at during...

  17. Combining University Studies With Work: Influence On Academic Achievement

    OpenAIRE

    Diana M. Yanbarisova

    2014-01-01

    This paper analyses the influence of different combinations of work and study on academic achievement among university students of Yaroslavl region in Russia. The data was collected during the first wave of longitudinal research on the educational and occupational trajectories of graduates of schools and universities conducted by the Institute of Education, Higher School of Economics, Moscow in 2009. The sample consists of 1474 4th and 5th year university students. Five work-study types are d...

  18. University students' mental health: Aksaray University example

    Directory of Open Access Journals (Sweden)

    Rezzan Gündoğdu

    2013-11-01

    Full Text Available This study examines whether mental health scores of the university students differ based on gender, whether they study in their ideal majors, whether they are contended with their majors, economic condition perceived and perceptions on employment opportunity after graduation. The sample group of the study constituted 3492 students comprising 2037 female students and 1455 male students attending Faculty of Education (634, Engineering Faculty (1582, Economic and Administrative Sciences Faculty (1097, Faculty of Science and Letters (762, Medical Vocational College (540, Physical Training and Sports College (443 and Aksaray Vocational College (1452 of Aksaray University in 2010-2011 Academic Year. Symptom Checklist (SCL 90-R developed by Deragotis, (1983; eg Öner, 1997 has been used to collect data on mental health level of the students involved in the study. Statistical analysis of the data collected has been carried out using t Test, One-way Analysis of Variance (ANOVA. Significant differences have been found in students in terms of independent variants according to the general symptom average score and numerous sub-scale scores.

  19. Frequent Questions About Universal Waste

    Science.gov (United States)

    Frequent questions such as Who is affected by the universal waste regulations? What is “mercury-containing equipment”? How are waste batteries managed under universal waste? How are waste pesticides managed under universal waste?

  20. Giving German universities a boost.

    Science.gov (United States)

    Tuffs, Annette

    2006-08-25

    Although well respected, German universities are no longer considered world class. Efforts to rejuvenate the German university system include a competition to confer elite status on the country's ten leading universities.

  1. (Un-shackling the University in the City

    Directory of Open Access Journals (Sweden)

    Ulrike Kistner

    2015-03-01

    Full Text Available This article examines the relation between the University of Pretoria and the City of Tshwane, outlining seven different kinds of relation as they have taken shape historically. The first type relation between the University and the City presented here, establishes correspondences in public architecture at the height of apartheid modernity, between structures marking and shaping political convergences. The second type of relation is premised on the walling in and fencing off of the University from the City; the Metro musings exhibition inaugurating the ‘Capital Cities’ project looks across the divides thus cemented, from within the confines of the University. The third type of relation is that of ‘Community Engagement’ culminating in the annual Mandela Day activities, impelled by ideas on the Developmental State featuring in the National Development Plan. In the fourth type of relation, corporate models of municipal governance find common cause with the corporate management styles of the University, expressed in corporate partnerships combining a ‘University of Excellence’ with ‘the African City of Excellence’. The strategies envisaged for social intervention emerging from this ‘partnership’ form a sixth type of relation between the University and the City. In the process of pitting property and law against poverty and lawlessness, new civic challenges are emerging for transformative constitutionalism and for the University. In both arenas, this article concludes, what is at stake is a seventh type of relation between the University and the City – outside of the ‘legal’-‘illegal’ distinction. For the University, in particular, this would entail a productive idea of ‘dissensus’.

  2. Universal varicella vaccine immunization in Japan.

    Science.gov (United States)

    Yoshikawa, Tetsushi; Kawamura, Yoshiki; Ohashi, Masahiro

    2016-04-07

    In 1974, Japanese scientists developed a live attenuated varicella vaccine based on the Oka strain. The efficacy of the vaccine for the prevention of varicella has been primarily demonstrated in studies conducted in the United States following the adoption of universal immunization using the Oka strain varicella vaccine in 1996. Although the vaccine was developed by Japanese scientists, until recently, the vaccine has been administered on a voluntary basis in Japan resulting in a vaccine coverage rate of approximately 40%. Therefore, Japan initiated universal immunization using the Oka strain varicella vaccine in November 2014. Given the transition from voluntary to universal immunization in Japan, it will also be important to monitor the epidemiology of varicella and herpes zoster. The efficacy and safety of co-administration of the varicella vaccine and measles, mumps, and rubella vaccine have been demonstrated in many countries; however, there was no data from Japan. In order to adopt the practice of universal immunization using the Oka strain varicella vaccine in Japan, data demonstrating the efficacy and safety of co-administration of varicella vaccine and measles and rubella (MR) vaccine were required. Additionally, we needed to elucidate the appropriate time interval between the first and second administrations of the vaccine. It is also important to differentiate between wild type and Oka vaccine type strains in herpes zoster patient with past history of varicella vaccine. Thus, there are many factors to consider regarding the adoption of universal immunization in Japan to control varicella zoster virus (VZV) infections.

  3. A Michelson-type radio interferometer for university education

    Science.gov (United States)

    Koda, Jin; Barrett, James; Shafto, Gene; Slechta, Jeff; Hasegawa, Tetsuo; Hayashi, Masahiko; Metchev, Stanimir

    2016-04-01

    We report development of a simple and affordable radio interferometer suitable as an educational laboratory experiment. The design of this interferometer is based on the Michelson and Pease stellar optical interferometer, but instead operates at the radio wavelength of ˜11 GHz (˜2.7 cm), requiring much less stringent optical accuracy in its design and use. We utilize a commercial broadcast satellite dish and feedhorn with two flat side mirrors that slide on a ladder, providing baseline coverage. This interferometer can resolve and measure the diameter of the Sun, even on a day with marginal weather. Commercial broadcast satellites provide convenient point sources for comparison to the Sun's extended disk. The mathematical background of an adding interferometer is presented, as is its design and development, including the receiver system, and sample measurements of the Sun. Results from a student laboratory report are shown. With the increasing importance of interferometry in astronomy, the lack of educational interferometers is an obstacle to training the future generation of astronomers. This interferometer provides the hands-on experience needed to fully understand the basic concepts of interferometry.

  4. A Michelson-type Radio Interferometer for University Education

    CERN Document Server

    Koda, Jin; Hasegawa, Tetsuo; Hayashi, Masahiko; Shafto, Gene; Slechta, Jeff; Metchev, Stanimir

    2016-01-01

    We report development of a simple and affordable radio interferometer suitable as an educational laboratory experiment. With the increasing importance of interferometry in astronomy, the lack of educational interferometers is an obstacle to training the future generation of astronomers. This interferometer provides the hands-on experience needed to fully understand the basic concepts of interferometry. The design of this interferometer is based on the Michelson & Pease stellar optical interferometer, but operates at a radio wavelength (~11 GHz; ~2.7cm); thus the requirement for optical accuracy is much less stringent. We utilize a commercial broadcast satellite dish and feedhorn. Two flat side mirrors slide on a ladder, providing baseline coverage. This interferometer resolves and measures the diameter of the Sun, a nice daytime experiment which can be carried out even in marginal weather (i.e., partial cloud cover). Commercial broadcast satellites provide convenient point sources for comparison to the Su...

  5. Type-indexed data types

    NARCIS (Netherlands)

    Hinze, R.; Jeuring, J.T.; Löh, A.

    2002-01-01

    A polytypic function is a function that can be instantiated on many data types to obtain data type specific functionality. Examples of polytypic functions are the functions that can be derived in Haskell, such as show, read, and ‘==’.More advanced examples are functions for digital searching, patter

  6. Einstein Static Universe in Exponential $f(T)$ Gravity

    CERN Document Server

    Li, Jung-Tsung; Geng, Chao-Qiang

    2013-01-01

    We analyze the stability of the Einstein static closed and open universe in two types of exponential $f(T)$ gravity theories. We show that the stable solutions exist in these two models. In particular, we find that large regions of parameter space in equation of state $w=p/\\rho$ for the stable universe are allowed in the $f(T)$ theories.

  7. Einstein static universe in exponential f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Li, Jung-Tsung; Lee, Chung-Chi; Geng, Chao-Qiang [National Tsing Hua University, Department of Physics, Hsinchu (China); National Center for Theoretical Sciences, Physics Division, Hsinchu (China)

    2013-02-15

    We analyze the stability of the Einstein static closed and open universe in two types of exponential f(T) gravity theory. We show that stable solutions exist in these two models. In particular, we find that large regions of parameter space in equation of state w=p/{rho} for the stable universe are allowed in the f(T) theories. (orig.)

  8. Multilateral versus unilateral exercises of universal criminal jurisdiction

    NARCIS (Netherlands)

    d' Aspremont, J.

    2010-01-01

    This Article draws a distinction between two types of exercise of universal criminal jurisdiction with a view to demonstrating that one of them is deeply detrimental to domestic IHL enforcement mechanisms, and especially zeroes in on contemporary unilateral exercises of universal criminal jurisdicti

  9. Exit Tickets Open the Door to University Learning

    Science.gov (United States)

    Danley, Angela; McCoy, Ann; Weed, Rahila

    2006-01-01

    Four instructors from a mid-western university implemented exit tickets in their university courses. The exit tickets were based on Marzano's (2012) four types of exit tickets and were analyzed for patterns. Faculty completed a journal to reflect on what was learned examining the exit tickets. A survey was completed by both instructors and…

  10. Vitamin D Deficiency : Universal Risk Factor for Multifactorial Diseases?

    NARCIS (Netherlands)

    de Borst, Martin H.; de Boer, Rudolf A.; Stolk, Ronald P.; Slaets, Joris P. J.; Wolffenbuttel, Bruce H. R.; Navis, Gerjan

    2011-01-01

    In the Western world, the majority of morbidity and mortality are caused by multifactorial diseases. Some risk factors are related to more than one type of disease. These so-called universal risk factors are highly relevant to the population, as reduction of universal risk factors may reduce the pre

  11. Vitamin D Deficiency: Universal Risk Factor for Multifactorial Diseases?

    NARCIS (Netherlands)

    de Borst, M.H.; de Boer, R.A.; Stolk, Ronald; Slaets, J.P J; Wolffenbuttel, B.H.R.; Navis, Ger Jan

    2011-01-01

    In the Western world, the majority of morbidity and mortality are caused by multifactorial diseases. Some risk factors are related to more than one type of disease. These so-called universal risk factors are highly relevant to the population, as reduction of universal risk factors may reduce the pre

  12. On the Structure and Function of Transnational Universities.

    Science.gov (United States)

    Galtung, Johan

    1980-01-01

    Describes and evaluates transnational universities, based on the author's experience as Director-General of the Inter-University Centre in Dubrovnik, Yugoslavia. Concludes that a major advantage of this type of cooperative educational institution is that it promotes knowledge and understanding which is international rather than ethnocentric. (DB)

  13. The Use of Institutional Repositories: The Ohio State University Experience

    Science.gov (United States)

    Connell, Tschera Harkness

    2011-01-01

    In this paper the author compares the use of digital materials that have been deposited in The Ohio State University (OSU) Knowledge Bank (KB). Comparisons are made for content considered in scope of the university archives and those considered out of scope, for materials originating from different campus sources, and for different types of…

  14. Intercollegiate Collaboration: Connecting Social Studies Preservice Teachers at Two Universities

    Science.gov (United States)

    Hilburn, Jeremy; Maguth, Brad

    2012-01-01

    This qualitative case study explored the collaboration between students in two social studies methods courses at different universities. The authors used technology to connect preservice teachers from teacher education programs that differ in terms of geography, size, and type of university. Using archived data from the courses, the authors found…

  15. Identity Work at a Normal University in Shanghai

    Science.gov (United States)

    Cockain, Alex

    2016-01-01

    Based upon ethnographic research, this article explores undergraduate students' experiences at a normal university in Shanghai focusing on the types of identities and forms of sociality emerging therein. Although students' symptoms of disappointment seem to indicate the power of university experiences to extinguish purposeful action, this article…

  16. Implementation of New Public Management in Norwegian Universities

    Science.gov (United States)

    Frolich, Nicoline

    2005-01-01

    This article analyses the implementation of market-type mechanisms in the management of universities. The question of which cultural biases have been used in the implementation of New Public Management (NPM) in Norwegian universities is discussed. Cultural theory, institutional theory, and public policy studies are applied to the analysis of a…

  17. Today's University Students and Their Need to Connect

    Science.gov (United States)

    Russo, Theresa J.; Fallon, Moira A.; Zhang, Jie; Acevedo, Veronica C.

    2014-01-01

    Higher education is rapidly changing and university instructors are presented with new types of students for whom technology is a significant influence. They perceive technology as a way of life and express a need to feel connected at all times. With increasingly diverse university classroom, technology integration is both a challenge and an…

  18. On the Structure and Function of Transnational Universities.

    Science.gov (United States)

    Galtung, Johan

    1980-01-01

    Describes and evaluates transnational universities, based on the author's experience as Director-General of the Inter-University Centre in Dubrovnik, Yugoslavia. Concludes that a major advantage of this type of cooperative educational institution is that it promotes knowledge and understanding which is international rather than ethnocentric. (DB)

  19. Modelling of the dynamics of the vessel and circuits of recirculation of a BWR type nucleo electric as part of the SUN-RAH university simulator; Modelado de la dinamica de la vasija y circuitos de recirculacion de una nucleoelectrica tipo BWR como parte del simulador universitario SUN-RAH

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez S, R.A. [DEPFI, Campus Morelos, en IMTA, Jiutepec, Morelos (Mexico)]. e-mail: rsanchez_15@yahoo.com.mx

    2003-07-01

    In the present project, the development of a model for the dynamics of the process of energy transport generated in the nuclear fuel until the main steam lines of a nucleo electric central with BWR type nuclear reactor, using mathematical models of reduced order is presented. These models present the main characteristics of the reactor vessel and of the recirculation system, defined by the main phenomena that intervene in those physical processes. Likewise, the objective of the general project of the one University student nucleo electric simulator with Boiling Water Reactor (SUN-RAH) for later on to establish the modeling equations for each part of the nuclear reactor as well as of the load pursuit system. Also, its were described the graphic interfaces implemented in an three layers architecture in which the different measuring variables are presented in the monitor. It fits signalize that the advantage presented by the University student nucleo electric simulator is the possibility to carry out changes in the magnitudes of those different variables that intervene in the physical processes made in the one reactor and in the recirculation system in execution time of the same one. Of same way, the creation of a graphic intuitive interface, friendly, and designed with the same technology with the one that the video games are programmed in the present time. Besides all the above mentioned, the pending goals inside of the project are exposed, as well as the developments in construction process or conceptualized to be included in future versions of the simulator. Finally its are thinking about possible scenarios of applications of SUN-RAH, as well as their reaches. (Author)

  20. Adverse Drug Reactions in Children: Types, Incidence,

    African Journals Online (AJOL)

    Drug Reactions in Children: Types, Incidence, and Risk Factors. Nigerian fownal of Paedzkztrits 2006; ... 'prescription, non-prescription, biological and herbal. Lagos'State University ..... intensity of data collection and possibility of prevention.

  1. Communication in academic libraries: an assessment of university of ...

    African Journals Online (AJOL)

    Communication in academic libraries: an assessment of university of Calabar library technique in information services delivery. ... Global Journal of Educational Research ... and communication; purpose, types and models of communication.

  2. Pollutant Types

    Science.gov (United States)

    Describes the types of air pollutants, including common or criteria pollutants, and hazardous air pollutants and links to additional information. Also links to resources on other air pollution issues.

  3. The Gravitational Universe

    CERN Document Server

    Danzmann, K

    2013-01-01

    The last century has seen enormous progress in our understanding of the Universe. We know the life cycles of stars, the structure of galaxies, the remnants of the big bang, and have a general understanding of how the Universe evolved. We have come remarkably far using electromagnetic radiation as our tool for observing the Universe. However, gravity is the engine behind many of the processes in the Universe, and much of its action is dark. Opening a gravitational window on the Universe will let us go further than any alternative. Gravity has its own messenger: Gravitational waves, ripples in the fabric of spacetime. They travel essentially undisturbed and let us peer deep into the formation of the first seed black holes, exploring redshifts as large as z ~ 20, prior to the epoch of cosmic re-ionisation. Exquisite and unprecedented measurements of black hole masses and spins will make it possible to trace the history of black holes across all stages of galaxy evolution, and at the same time constrain any devia...

  4. Recipes for the Universe

    CERN Multimedia

    2005-01-01

    As part of the World Year of Physics, the Physics Section of the University of Geneva is organising a series of conferences for the uninitiated. Each of the conferences will begin with a demonstration in the auditorium of the detection of cosmic rays and, in collaboration with Professor E. Ellberger of the Conservatoire de Musique de Genève, of how these signals from the farthest reaches of the Universe can be used to create "cosmic music". The third conference in the series, "How to build a universe?", will take place on Tuesday 15 March 2005 and the speaker will be the CERN theoretical physicist, John Ellis. A tiny number of elementary particles are responsible for the very diverse universe that surrounds us. These basic building blocks of matter interact by exchanging photons and other similar particles. After summing up what we know about these fundamental building blocks, their role in the history of the universe will be discussed. Where does matter come from? Where do the structures that ...

  5. Recipes for the Universe

    CERN Multimedia

    2005-01-01

    As part of the World Year of Physics, the Physics Section of the University of Geneva is organising a series of conferences for the uninitiated. Each of the conferences will begin with a demonstration in the auditorium of the detection of cosmic rays and, in collaboration with Professor E. Ellberger of the Conservatoire de Musique de Genève, of how these signals from the farthest reaches of the Universe can be used to create "cosmic music". The third conference in the series, "How to build a universe?", will take place on Tuesday 15 March 2005 and the speaker will be the CERN theoretical physicist, John Ellis. A tiny number of elementary particles are responsible for the very diverse universe that surrounds us. These basic building blocks of matter interact by exchanging photons and other similar particles. After summing up what we know about these fundamental building blocks, their role in the history of the universe will be discussed. Where does matter come from? Where do the structures that ...

  6. The entangled accelerating universe

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez-Diaz, Pedro F. [Colina de los Chopos, Instituto de Fisica Fundamental, Consejo Superior de Investigaciones Cientificas, Serrano 121, 28006 Madrid (Spain); Estacion Ecologica de Biocosmologia, Pedro de Alvarado, 14, 06411-Medellin (Spain)], E-mail: p.gonzalezdiaz@imaff.cfmac.csic.es; Robles-Perez, Salvador [Colina de los Chopos, Instituto de Fisica Fundamental, Consejo Superior de Investigaciones Cientificas, Serrano 121, 28006 Madrid (Spain); Estacion Ecologica de Biocosmologia, Pedro de Alvarado, 14, 06411-Medellin (Spain)

    2009-08-31

    Using the known result that the nucleation of baby universes in correlated pairs is equivalent to spacetime squeezing, we show in this Letter that there exists a T-duality symmetry between two-dimensional warp drives, which are physically expressible as localized de Sitter little universes, and two-dimensional Tolman-Hawking and Gidding-Strominger baby universes respectively correlated in pairs, so that the creation of warp drives is also equivalent to spacetime squeezing. Perhaps more importantly, it has been also seen that the nucleation of warp drives entails a violation of the Bell's inequalities, and hence the phenomena of quantum entanglement, complementarity and wave function collapse. These results are generalized to the case of any dynamically accelerating universe filled with dark or phantom energy whose creation is also physically equivalent to spacetime squeezing and to the violation of the Bell's inequalities, so that the universe we are living in should be governed by essential sharp quantum theory laws and must be a quantum entangled system.

  7. Thermodynamics of Fractal Universe

    CERN Document Server

    Sheykhi, Ahmad; Wang, Bin

    2012-01-01

    We investigate the thermodynamical properties of the apparent horizon in a fractal universe. We find that one can always rewrite the Friedmann equation of the fractal universe in the form of the entropy balance relation $ \\delta Q=TdS+Td\\tilde{S}$, where $ \\delta Q $ and $ T $ are the energy flux and Unruh temperature seen by an accelerated observer just inside the apparent horizon, and $d\\tilde{S}$ is the entropy production term due to nonequilibrium thermodynamics of fractal universe. This shows that in a fractal universe, a treatment with nonequilibrium thermodynamics of spacetime may be needed. We also study the generalized second law of thermodynamics in the framework of fractal universe. When the temperature of the apparent horizon and the matter fields inside the horizon are equal, i.e. $T=T_h$, the generalized second law of thermodynamics can be fulfilled provided the deceleration and the equation of state parameters ranges either as $-1 \\leq q < 0 $, $- 1 \\leq w < - 1/3$ or as $q<-1$, $w<...

  8. Universe opacity and EBL

    Science.gov (United States)

    Vavryčuk, Václav

    2017-02-01

    The observed extragalactic background light (EBL) is affected by light attenuation due to absorption of light by galactic and intergalactic dust in the Universe. Even galactic opacity of 10-20 per cent and minute universe intergalactic opacity of 0.01 mag h Gpc-1 at the local Universe have a significant impact on the EBL because obscuration of galaxies and density of intergalactic dust increase with redshift as (1 + z)3. Consequently, intergalactic opacity increases and the Universe becomes considerably opaque at z > 3. Adopting realistic values for galactic and intergalactic opacity, the estimates of the EBL for the expanding dusty universe are close to observations. The luminosity density evolution fits well measurements. The model reproduces a steep increase of the luminosity density at z EBL ranges from 100 to 200 nW m-2 sr-1 and is within the limits of 40 and 200 nW m-2 sr-1 of current EBL observations. The model predicts 98 per cent of the EBL coming from radiation of galaxies at z 3.5.

  9. Users or Students? Privacy in University MOOCS.

    Science.gov (United States)

    Jones, Meg Leta; Regner, Lucas

    2016-10-01

    Two terms, student privacy and Massive Open Online Courses, have received a significant amount of attention recently. Both represent interesting sites of change in entrenched structures, one educational and one legal. MOOCs represent something college courses have never been able to provide: universal access. Universities not wanting to miss the MOOC wave have started to build MOOC courses and integrate them into the university system in various ways. However, the design and scale of university MOOCs create tension for privacy laws intended to regulate information practices exercised by educational institutions. Are MOOCs part of the educational institutions these laws and policies aim to regulate? Are MOOC users students whose data are protected by aforementioned laws and policies? Many university researchers and faculty members are asked to participate as designers and instructors in MOOCs but may not know how to approach the issues proposed. While recent scholarship has addressed the disruptive nature of MOOCs, student privacy generally, and data privacy in the K-12 system, we provide an in-depth description and analysis of the MOOC phenomenon and the privacy laws and policies that guide and regulate educational institutions today. We offer privacy case studies of three major MOOC providers active in the market today to reveal inconsistencies among MOOC platform and the level and type of legal uncertainty surrounding them. Finally, we provide a list of organizational questions to pose internally to navigate the uncertainty presented to university MOOC teams.

  10. Magnetized Emergent Universe with Null Radiation Flow

    Science.gov (United States)

    Singh, J. K.; Rani, Sarita

    2016-01-01

    In this paper, we study the Bianchi type-I cosmological model in a different basic form incorporating with null radiation flow with the perfect fluid in the presence as well as absence of a source free magnetic field. A set of new exact solutions of Einstein field equations are obtained in both the cases. We observe that the emergent universe model with null radiation flow approaches to de-sitter universe at late time obeying the same rate of expansion in presence and absence of the magnetic field.

  11. University-Community Engagement: Case Study of University Social Responsibility

    Science.gov (United States)

    Chile, Love M.; Black, Xavier M.

    2015-01-01

    Corporatisation of universities has drawn parallels between contemporary universities and business corporations, and extended analysis of corporate social responsibility to universities. This article reports on a case study of university-community engagement with schools and school communities through youth engagement programmes to enhance…

  12. University-Community Engagement: Case Study of University Social Responsibility

    Science.gov (United States)

    Chile, Love M.; Black, Xavier M.

    2015-01-01

    Corporatisation of universities has drawn parallels between contemporary universities and business corporations, and extended analysis of corporate social responsibility to universities. This article reports on a case study of university-community engagement with schools and school communities through youth engagement programmes to enhance…

  13. A summary report of the workshop on the 'academic leadership training in the AIMST University, Malaysia'

    OpenAIRE

    Premkumar, Rajagopal; Subhash J Bhore

    2013-01-01

    In Malaysia, there are 81 (as on February 15, 2013) higher education institutions including satellite branches of the foreign universities. In northern part of the Peninsular Malaysia, AIMST University is the first private not-for-profit university and aims to become a premier private university in the country and the region. The workshop described in this article was designed to develop and enhance the capacity of academic staff-in-leadership-role for the University. This type of workshops m...

  14. Assembling University Education

    DEFF Research Database (Denmark)

    Olsen, Poul Bitsch

    2015-01-01

    material organizing devices, students as learning subjects, and teachers as experienced academic practitioners are discussed in order to explore how academic values are translated and transformed during the education process, and how the material assemblages in evidence are both reflective and constitutive......This paper compares ways of materializing methodology of learning at two different universities. One of our sites is the basic studies program for social science and business studies students at a new problem-oriented university. The other site is the integrative methods course for communication...... studies students in a traditional university. In particular, Becker‘s (1988) description of a social field of knowing and theories about the role of assemblages and materiality in practice-based studies (Law 1987,1992, Gherardi 2006, Svabo 2009) are used as organizing concepts. The relations between...

  15. Do closed universes recollapse?

    Science.gov (United States)

    Tipler, Frank J.

    The conditions for recollapse in universes with compact maximal hypersurfaces are investigated theoretically, reviewing the results of recent investigations. The importance of recollapse for observational astrophysics is briefly discussed, and particular attention is given to the implications of maximal hypersurfaces and to recollapse in S3 Friedmann universes. It is conjectured that all globally hyperbolic C2 maximally extended spatially homogeneous closed universes with S3 or S2 x S1 topology and with stress-energy tensors obeying the strong-energy, positive-pressure, dominant-energy, and matter-regularity conditions do expand from an all-encompassing initial singularity to a maximal hypersurface and then recollapse to an all-encompassing final singularity.

  16. University Community Partnerships

    Directory of Open Access Journals (Sweden)

    Jonathan G. Cooper

    2014-03-01

    Full Text Available University-Community Partnerships have been recognized as a valuable contribution to both the academic community and our cities and towns. In the words of Henry Cisneros, former U.S. Department of Housing and Urban Design secretary, “The long-term futures of both the city and the university in this country are so intertwined that one cannot—or perhaps will not—survive without the other.” Increasingly, colleges and university are bringing their time, energy and resources to bear on local problems. They are using their other physical, financial and intellectual capital to facilitate economic development, provide social services, technical assistance and create opportunities for applied research.

  17. Universality of geometry

    CERN Document Server

    Wetterich, C

    2012-01-01

    In models of emergent gravity the metric arises as the expectation value of some collective field. Usually, many different collective fields with appropriate tensor properties are candidates for a metric. Which collective field describes the "physical geometry"? We resolve this "metric ambiguity" by an investigation of the most general form of the quantum effective action for several metrics. In the long-distance limit the physical metric is universal and accounts for a massless graviton. Other degrees of freedom contained in the various metric candidates describe very massive scalars and symmetric second rank tensors. They only play a role at microscopic distances, typically around the Planck length. The universality of geometry at long distances extends to the vierbein and the connection. On the other hand, for distances and time intervals of Planck size geometry looses its universal meaning. Time is born with the big bang.

  18. The anamorphic universe

    CERN Document Server

    Ijjas, Anna

    2015-01-01

    We introduce "anamorphic" cosmology, an approach for explaining the smoothness and flatness of the universe on large scales and the generation of a nearly scale-invariant spectrum of adiabatic density perturbations. The defining feature is a smoothing phase that acts like a contracting universe based on some Weyl frame-invariant criteria and an expanding universe based on other frame-invariant criteria. An advantage of the contracting aspects is that it is possible to avoid the multiverse and measure problems that arise in inflationary models. Unlike ekpyrotic models, anamorphic models can be constructed using only a single field and can generate a nearly scale-invariant spectrum of tensor perturbations. Anamorphic models also differ from pre-big bang and matter bounce models that do not explain the smoothness. We present some examples of cosmological models that incorporate an anamorphic smoothing phase.

  19. The anamorphic universe

    Science.gov (United States)

    Ijjas, Anna; Steinhardt, Paul J.

    2015-10-01

    We introduce ``anamorphic'' cosmology, an approach for explaining the smoothness and flatness of the universe on large scales and the generation of a nearly scale-invariant spectrum of adiabatic density perturbations. The defining feature is a smoothing phase that acts like a contracting universe based on some Weyl frame-invariant criteria and an expanding universe based on other frame-invariant criteria. An advantage of the contracting aspects is that it is possible to avoid the multiverse and measure problems that arise in inflationary models. Unlike ekpyrotic models, anamorphic models can be constructed using only a single field and can generate a nearly scale-invariant spectrum of tensor perturbations. Anamorphic models also differ from pre-big bang and matter bounce models that do not explain the smoothness. We present some examples of cosmological models that incorporate an anamorphic smoothing phase.

  20. UNIVERSITIES FINANCING POLICY ISSUES

    Directory of Open Access Journals (Sweden)

    Ala CRECIUN

    2013-09-01

    Full Text Available University autonomy represented an additional argument against government interference in university education. From academic perspective, the diversification of funding sources and the introduction of changes in the funding mechanism represented positive factors in the evolution of higher education. It is obvious that most of the problems associated with underfunding of higher education are relevant because it affects the quality of education and overall performance of universities. Since the training costs per capita in the higher education system were the lowest compared with the same indicator in relation to vocational schools and colleges in the period of 2005 – 2009, it is clear that underfunding is real and requires necessary measures to be taken to remedy the situation

  1. The apparent Universe

    Science.gov (United States)

    Binétruy, P.; Helou, A.

    2015-10-01

    We exploit the parallel between dynamical black holes and cosmological spacetimes to describe the evolution of Friedmann-Lemaître-Robertson-Walker universes from the point of view of an observer in terms of the dynamics of the apparent horizon. Using the Hayward-Kodama formalism of dynamical black holes, we clarify the role of the Clausius relation to derive the Friedmann equations for a Universe, in the spirit of Jacobson’s work on the thermodynamics of spacetime. We also show how dynamics at the horizon naturally leads to the quantum-mechanical process of Hawking radiation. We comment on the connection of this work with recent ideas to consider our observable Universe as a Bose-Einstein condensate and on the corresponding role of vacuum energy.

  2. Phonology without Universal Grammar

    Directory of Open Access Journals (Sweden)

    Diana eArchangeli

    2015-09-01

    Full Text Available The question of identifying the properties of language that are specific human linguistic abilities, i.e. Universal Grammar, lies at the center of linguistic research. This paper argues for a largely Emergent Grammar in phonology, taking as the starting point that memory, categorization, attention to frequency, and the creation of symbolic systems are all nonlinguistic characteristics of the human mind. The articulation patterns of American English rhotics illustrate categorization and systems; the distribution of vowels in Bantu vowel harmony uses frequencies of particular sequences to argue against Universal Grammar and in favor of Emergent Grammar; prefix allomorphy in Esimbi illustrates the Emergent symbolic system integrating phonological and morphological generalizations. The Esimbi case has been treated as an example of phonological opacity in a Universal Grammar account; the Emergent analysis resolves the pattern without opacity concerns.

  3. Phonology without universal grammar.

    Science.gov (United States)

    Archangeli, Diana; Pulleyblank, Douglas

    2015-01-01

    The question of identifying the properties of language that are specific human linguistic abilities, i.e., Universal Grammar, lies at the center of linguistic research. This paper argues for a largely Emergent Grammar in phonology, taking as the starting point that memory, categorization, attention to frequency, and the creation of symbolic systems are all nonlinguistic characteristics of the human mind. The articulation patterns of American English rhotics illustrate categorization and systems; the distribution of vowels in Bantu vowel harmony uses frequencies of particular sequences to argue against Universal Grammar and in favor of Emergent Grammar; prefix allomorphy in Esimbi illustrates the Emergent symbolic system integrating phonological and morphological generalizations. The Esimbi case has been treated as an example of phonological opacity in a Universal Grammar account; the Emergent analysis resolves the pattern without opacity concerns.

  4. Addis Ababa University

    OpenAIRE

    Ahmed, Hussein

    2006-01-01

    L’Université d’Addis-Abeba. Cinquante-trois ans d’existence : une vue de l’intérieur. — Établis en 1950 à l’initiative du gouvernement impérial, les différents collèges qui constituaient le University College of Addis Ababa (ucaa) ont été intégrés en 1962 pour former la Haile Sellassie I University (hsiu), plus tard renommée Addis Ababa University (aau). Dans les années 1970 (sauf de 1974 à 1976) et surtout dans les années 1980, l’aau a étendu et diversifié ses programmes universitaires, et a...

  5. Fundamentals of university mathematics

    CERN Document Server

    McGregor, C M; Stothers, W W

    2010-01-01

    The third edition of this popular and effective textbook provides in one volume a unified treatment of topics essential for first year university students studying for degrees in mathematics. Students of computer science, physics and statistics will also find this book a helpful guide to all the basic mathematics they require. It clearly and comprehensively covers much of the material that other textbooks tend to assume, assisting students in the transition to university-level mathematics.Expertly revised and updated, the chapters cover topics such as number systems, set and functions, differe

  6. Did the universe recombine

    Energy Technology Data Exchange (ETDEWEB)

    Bartlett, J.G.; Stebbins, A. (California, University, Berkeley (USA) Toronto, University (Canada))

    1991-04-01

    The Zel'dovich-Sunyaev model-independent arguments for the existence of a neutral hydrogen phase is reviewed in light of new limits on the Compton y parameter from COBE. It is concluded that with baryon densities compatible with standard cosmological nucleosynthesis, the universe could have remained fully ionized throughout its history without producing a detectable spectral distortion. It is argued that it is unlikely that spectral observations of the cosmic microwave background will ever require the universe to have recombined for flat cosmologies. 22 refs.

  7. The Expanding Universe

    Science.gov (United States)

    Heacox, William D.

    2015-11-01

    Introducing the Universe; Part I. Conceptual Foundations: 1. Newtonian cosmology; 2. General relativity; 3. Relativistic cosmology; Part II. General Relativity: 4. General covariance; 5. Equivalence principle; 6. Space-time curvature; 7. Einstein field equations of gravitation; Part III. Universal Expansion: 8. Cosmological field equations; 9. Cosmography; 10. Expansion dynamics; Part IV. Expansion Models: 11. Radiation; 12. Matter; 13. Dark energy; 14. Observational constraints; 15. Concordance cosmological model; Part V. Expansion History: 16. Particle era; 17. Plasma era; 18. Galaxy era; 19. Afterword: the new modern cosmology; Part VI: Appendices; Bibliography; Index.

  8. Bootstrap, universality and horizons

    Energy Technology Data Exchange (ETDEWEB)

    Chang, Chi-Ming [Center for Theoretical Physics and Department of Physics,University of California, Berkeley, CA 94704 (United States); Lin, Ying-Hsuan [Jefferson Physical Laboratory, Harvard University,Cambridge, MA 02138 (United States)

    2016-10-13

    We present a closed form expression for the semiclassical OPE coefficients that are universal for all 2D CFTs with a “weak” light spectrum, by taking the semiclassical limit of the fusion kernel. We match this with a properly regularized and normalized bulk action evaluated on a geometry with three conical defects, analytically continued in the deficit angles beyond the range for which a metric with positive signature exists. The analytically continued geometry has a codimension-one coordinate singularity surrounding the heaviest conical defect. This singularity becomes a horizon after Wick rotating to Lorentzian signature, suggesting a connection between universality and the existence of a horizon.

  9. The 4-percent universe

    CERN Document Server

    Panek, Richard

    2012-01-01

    It is one of the most disturbing aspects of our universe: only four per cent of it consists of the matter that makes up every star, planet, and every book. The rest is completely unknown. Acclaimed science writer Richard Panek tells the story of the handful of scientists who have spent the past few decades on a quest to unlock the secrets of “dark matter" and the even stranger substance called “dark energy". These are perhaps the greatest mysteries in science,and solving them will reshape our understanding of the universe and our place in it. The stakes could not be higher. Panek's fast-paced

  10. Warm anisotropic inflationary universe model

    Energy Technology Data Exchange (ETDEWEB)

    Sharif, M.; Saleem, Rabia [University of the Punjab, Department of Mathematics, Lahore (Pakistan)

    2014-02-15

    This paper is devoted to the study of warm inflation using vector fields in the background of a locally rotationally symmetric Bianchi type I model of the universe. We formulate the field equations, and slow-roll and perturbation parameters (scalar and tensor power spectra as well as their spectral indices) in the slow-roll approximation. We evaluate all these parameters in terms of the directional Hubble parameter during the intermediate and logamediate inflationary regimes by taking the dissipation factor as a function of the scalar field as well as a constant. In each case, we calculate the observational parameter of interest, i.e., the tensor-scalar ratio in terms of the inflaton. The graphical behavior of these parameters shows that the anisotropic model is also compatible with WMAP7 and the Planck observational data. (orig.)

  11. University Accreditation using Data Warehouse

    Science.gov (United States)

    Sinaga, A. S.; Girsang, A. S.

    2017-01-01

    The accreditation aims assuring the quality the quality of the institution education. The institution needs the comprehensive documents for giving the information accurately before reviewed by assessor. Therefore, academic documents should be stored effectively to ease fulfilling the requirement of accreditation. However, the data are generally derived from various sources, various types, not structured and dispersed. This paper proposes designing a data warehouse to integrate all various data to prepare a good academic document for accreditation in a university. The data warehouse is built using nine steps that was introduced by Kimball. This method is applied to produce a data warehouse based on the accreditation assessment focusing in academic part. The data warehouse shows that it can analyse the data to prepare the accreditation assessment documents.

  12. Warm Anisotropic Inflationary Universe Model

    CERN Document Server

    Sharif, M

    2014-01-01

    This paper is devoted to study the warm inflation using vector fields in the background of locally rotationally symmetric Bianchi type I universe model. We formulate the field equations, slow-roll and perturbation parameters (scalar and tensor power spectra as well as their spectral indices) under slow-roll approximation. We evaluate all these parameters in terms of directional Hubble parameter during intermediate and logamediate inflationary regimes by taking the dissipation factor as a function of scalar field as well as a constant. In each case, we calculate the observational parameter of interest, i.e., tensor-scalar ratio in terms of inflation. The graphical behavior of these parameters shows that the anisotropic model is also compatible with WMAP7 and Planck observational data.

  13. A universal heliostat control system

    Science.gov (United States)

    Gross, Fabian; Geiger, Mark; Buck, Reiner

    2017-06-01

    This paper describes the development of a universal heliostat control system as part of the AutoR project [1]. The system can control multiple receivers and heliostat types in a single application. The system offers support for multiple operators on different machines and is designed to be as adaptive as possible. Thus, the system can be used for different heliostat field setups with only minor adaptations of the system's source code. This is achieved by extensive usage of modern programming techniques like reflection and dependency injection. Furthermore, the system features co-simulation of a ray tracer, a reference PID-controller implementation for open volumetric receivers and methods for heliostat calibration and monitoring.

  14. Universities Venture into Venture Capitalism.

    Science.gov (United States)

    Desruisseaux, Paul

    2000-01-01

    Reports that some universities are starting their own venture-capital funds to develop campus companies, or are investing endowment funds with established venture-capital firms inclined to finance potential spinoffs from campus research. Examples cited are from the University of Alabama, Vanderbilt University (Tennessee), University of…

  15. Observatory of Shiraz University

    Science.gov (United States)

    Bordbar, G. H.; Bahrani, F.

    2016-12-01

    Here we write about the observatory of Shiraz University, which has the largest active telescope in Iran but now, because of problems like light pollution of the nearby city and exhaustion of its largest telescope we need a plan for modernization and automatization in a new place.

  16. Personnel Management. Universities.

    Science.gov (United States)

    Ohio Board of Regents, Columbus. Management Improvement Program.

    This manual is one of 10 completed in the Ohio Management Improvement Program (MIP) during the 1971-73 biennium. In this project, Ohio's 34 public universities and colleges, in an effort directed and staffed by the Ohio Board of Regents, have developed manuals of management practices, in this case, concerning personnel management. Emphasis in this…

  17. Entrepreneurship and University Licensing

    NARCIS (Netherlands)

    Brouwer, M.

    2005-01-01

    Outside invention has gained in importance as universities are actively seeking commercialization of their inventions since the passage of the Bayh-Dole Act. The paper analyzes the incentives to invent for outside and inside inventors. It is shown that outside inventors have greater incentives to in

  18. University Student Online Plagiarism

    Science.gov (United States)

    Wang, Yu-mei

    2008-01-01

    This article reports a study investigating university student online plagiarism. The following questions are investigated: (a) What is the incidence of student online plagiarism? (b) What are student perceptions regarding online plagiarism? (c) Are there any differences in terms of student perceptions of online plagiarism and print plagiarism? (d)…

  19. Universities and Epistemology

    DEFF Research Database (Denmark)

    Barnett, Ronald; Bengtsen, Søren Smedegaard

    2017-01-01

    This paper examines the relation between epistemology and higher education. We shall start by briefly examining three classical texts on the understanding of knowledge at universities, as well as noting some others, and go on to sketch a version of our own. Our argument is as follows: the world...

  20. The Universal Dark Matter

    CERN Document Server

    Soberman, R K; Soberman, Robert K.; Dubin, Maurice

    2006-01-01

    Fragile volatile aggregates with extremely low albedo, gravitationally drawn into the solar system are likely from the dark matter dominating the universal mass. Characteristics of this meteoric population permitted avoiding detection through a half-century's search. Measurements from space probes and in the upper atmosphere prove their existence and confirm their elusive properties.