WorldWideScience

Sample records for resonance theory art

  1. Hardware implementation of an adaptive resonance theory (ART) neural network using compensated operational amplifiers

    Science.gov (United States)

    Ho, Ching S.; Liou, Juin J.; Georgiopoulos, Michael; Christodoulou, Christos G.

    1994-03-01

    This paper presents an analog circuit design and implementation for an adaptive resonance theory neural network architecture called the augmented ART1 neural network (AART1-NN). Practical monolithic operational amplifiers (Op-Amps) LM741 and LM318 are selected to implement the circuit, and a simple compensation scheme is developed to adjust the Op-Amp electrical characteristics to meet the design requirement. A 7-node prototype circuit has been designed and verified using the Pspice circuit simulator run on a Sun workstation. Results simulated from the AART1-NN circuit using the LM741, LM318, and ideal Op-Amps are presented and compared.

  2. An efficient approach for electric load forecasting using distributed ART (adaptive resonance theory) and HS-ARTMAP (Hyper-spherical ARTMAP network) neural network

    International Nuclear Information System (INIS)

    Cai, Yuan; Wang, Jian-zhou; Tang, Yun; Yang, Yu-chen

    2011-01-01

    This paper presents a neural network based on adaptive resonance theory, named distributed ART (adaptive resonance theory) and HS-ARTMAP (Hyper-spherical ARTMAP network), applied to the electric load forecasting problem. The distributed ART combines the stable fast learning capabilities of winner-take-all ART systems with the noise tolerance and code compression capabilities of multi-layer perceptions. The HS-ARTMAP, a hybrid of an RBF (Radial Basis Function)-network-like module which uses hyper-sphere basis function substitute the Gaussian basis function and an ART-like module, performs incremental learning capabilities in function approximation problem. The HS-ARTMAP only receives the compressed distributed coding processed by distributed ART to deal with the proliferation problem which ARTMAP (adaptive resonance theory map) architecture often encounters and still performs well in electric load forecasting. To demonstrate the performance of the methodology, data from New South Wales and Victoria in Australia are illustrated. Results show that the developed method is much better than the traditional BP and single HS-ARTMAP neural network. -- Research highlights: → The processing of the presented network is based on compressed distributed data. It's an innovation among the adaptive resonance theory architecture. → The presented network decreases the proliferation the Fuzzy ARTMAP architectures usually encounter. → The network on-line forecasts electrical load accurately, stably. → Both one-period and multi-period load forecasting are executed using data of different cities.

  3. Applied neutron resonance theory

    International Nuclear Information System (INIS)

    Froehner, F.H.

    1980-01-01

    Utilisation of resonance theory in basic and applications-oriented neutron cross section work is reviewed. The technically important resonance formalisms, principal concepts and methods as well as representative computer programs for resonance parameter extraction from measured data, evaluation of resonance data, calculation of Doppler-broadened cross sections and estimation of level-statistical quantities from resonance parameters are described. (author)

  4. Applied neutron resonance theory

    International Nuclear Information System (INIS)

    Froehner, F.H.

    1978-07-01

    Utilisation of resonance theory in basic and applications-oriented neutron cross section work is reviewed. The technically important resonance formalisms, principal concepts and methods as well as representative computer programs for resonance parameter extraction from measured data, evaluation of resonance data, calculation of Doppler-broadened cross sections and estimation of level-statistical quantities from resonance parameters are described. (orig.) [de

  5. Art Literature and Theory of Art

    NARCIS (Netherlands)

    Weststeijn, T.

    2013-01-01

    In contrast to theories of poetry or rhetoric, no complete ancient theory of the figurative arts survives. Renaissance authors wishing to underpin the "rebirth" of painting therefore had to resort to a variety of strategies to invent a new genre. Literary metaphors and fragments from artists’

  6. Neutron resonance absorption theory

    International Nuclear Information System (INIS)

    Reuss, P.

    1991-11-01

    After some recalls on the physics of neutron resonance absorption during their slowing down, this paper presents the main features of the theoretical developments performed by the french school of reactor physics: the effective reaction rate method so called Livolant-Jeanpierre theory, the generalizations carried out by the author, and the probability table method [fr

  7. Drawing Out Theory: Art and the Teaching of Political Theory.

    Science.gov (United States)

    Miller, Char R.

    2000-01-01

    Discusses how to use art in introductory political theory courses. Provides examples of incorporating art to teach political theory, such as examining Machiavelli's "The Prince" and Michelangelo's "David" to understand Florentine (Florence, Italy) political theory. (CMK)

  8. Optical resonator theory

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Jaeg Won; Cho, Sunh Oh; Jeong, Young Uk; Lee, Byung Cheol; Lee, Jong Min

    2000-10-01

    In this report we present a theoretical study of bare optical resonators having in mind to extend it to active resonators. To compute diffractional losses, phase shifts, intensity distributions and phases of radiation fields on mirrors, we coded a package of numerical procedures on bases of a pair of integral equations. Two numerical schemes, a matrix formalism and an iterative method, are programmed for finding numeric solutions to the pair of integral equations. The iterative method had been tried by Fox and Li, but it was not applicable to cases for high Fresnel numbers since the numerical errors involved propagate and accumulate uncontrollably. In this report, we implemented the matrix method to extend the computational limit further. A great deal of case studies are carried out with various configurations of stable and unstable resonators. Our results presented in this report show not only a good agreement with the results previously obtained by Fox and Li, but also a legitimacy of our numerical procedures in high Fresnel numbers.

  9. Giant resonances: reaction theory approach

    International Nuclear Information System (INIS)

    Toledo Piza, A.F.R. de; Foglia, G.A.

    1989-09-01

    The study of giant resonances through the use of reaction theory approach is presented and discussed. Measurements of cross-sections to the many available decay channels following excitation of giant multipole resonances (GMR) led one to view these phenomena as complicated dynamical syndromes so that theoretical requirements for their study must be extended beyond the traditional bounds of nuclear structure models. The spectra of decay products following GMR excitation in heavy nuclei are well described by statistical model (Hauser-Feshback, HF) predictions indicated that spreading of the collective modes plays a major role in shaping exclusive cross-sections. (A.C.A.S.) [pt

  10. State of the art magnetic resonance imaging

    International Nuclear Information System (INIS)

    Weissman, J.D.

    1987-01-01

    In less than a decade Magnetic Resonance Imaging (MRI) has evolved from a laboratory demonstration to a safe and effective technique for clinical diagnosis. This evolutionary process continues. At this time 2-D and 3-D imaging of the head and body is firmly established in clinical use. Surface coil imaging, two-component chemical shift imaging, in-vivo spectroscopy and flow imaging are currently in various stages of development. The present state of the art of MRI is a function of an array of technologies: magnet, Rf coil, Rf pulse amplifier, gradient coil and driver, pulse programmer, A/D converter, computer system architecture, array processors and mass storage (both magnetic and optical). The overall product design is the result of a complex process which balances the advantages and disadvantages of each component for optimal system performance and flexibility. The author discusses the organization of a state-of-the-art MRI system. Several examples of the kinds of system interactions affecting design choices are given. (Auth.)

  11. Theory of coherent resonance energy transfer

    International Nuclear Information System (INIS)

    Jang, Seogjoo; Cheng, Y.-C.; Reichman, David R.; Eaves, Joel D.

    2008-01-01

    A theory of coherent resonance energy transfer is developed combining the polaron transformation and a time-local quantum master equation formulation, which is valid for arbitrary spectral densities including common modes. The theory contains inhomogeneous terms accounting for nonequilibrium initial preparation effects and elucidates how quantum coherence and nonequilibrium effects manifest themselves in the coherent energy transfer dynamics beyond the weak resonance coupling limit of the Foerster and Dexter (FD) theory. Numerical tests show that quantum coherence can cause significant changes in steady state donor/acceptor populations from those predicted by the FD theory and illustrate delicate cooperation of nonequilibrium and quantum coherence effects on the transient population dynamics.

  12. Principles and theory of resonance power supplies

    International Nuclear Information System (INIS)

    Sreenivas, A.; Karady, G.G.

    1991-01-01

    The resonance power supply is widely used and proved to be an efficient method to supply accelerator magnets. The literature describes several power supply circuits but no comprehensive theory of operation is presented. This paper presents a mathematical method which describes the operation of the resonance power supply and it can be used for accurate design of components

  13. Richard Swedberg, The Art of Social Theory

    DEFF Research Database (Denmark)

    Carleheden, Mikael

    2015-01-01

    to systematic consideration. Swedberg attributes this strange absence to what he sees as the miserable state of contemporary social theory. We must, he claims, avoid two misconceptions: ‘empiricism’ and ‘abstract theory’. In the first case, theory is reduced to the task of summarizing the outcome of empirical......It is a rare event when a new general field of research opens up within sociology. However, with this book, Richard Swedberg intends to do just that. It is not just another book on social theory. It is a book on ‘theorizing’. And that makes all the difference. Swedberg has chosen the term ‘art......’, but also ‘craft’, to emphasize the practical side of doing theory. This topic has been strangely absent, not just in sociology but in the social sciences in general. In order to see this absence, we should ask ourselves how education in sociology is conventionally organized. The answer is by a taken...

  14. Issues of effective field theories with resonances

    International Nuclear Information System (INIS)

    Gegelia, J.; Japaridze, G.

    2014-01-01

    We address some issues of renormalization and symmetries of effective field theories with unstable particles - resonances. We also calculate anomalous contributions in the divergence of the singlet axial current in an effective field theory of massive SU(N) Yang-Mills fields interacting with fermions and discuss their possible relevance to the strong CP problem. (author)

  15. ARTEMIS: Reinvigorating History and Theory in Art and Design Education

    Science.gov (United States)

    Janet, Jeff; Miles, Melissa

    2009-01-01

    ARTEMIS (Art Educational Multiplayer Interactive Space) is an online multi-user virtual environment that is designed around the objects, artefacts, philosophies, personalities and critical discourses of the histories and theories of art and design. Conceived as a means of reinvigorating art history and theory education in the digital age, ARTEMIS…

  16. Social Engagements with Contemporary Art: Connecting Theory with Practice

    Science.gov (United States)

    Leake, Maria D.

    2014-01-01

    In this article, Leake is arguing for the relevance of contemporary art as a way to bridge the gap between theory and practice in the spaces of art education. Graeme Sullivan develops a similar argument in his "Studies" article, "The Art of Research." Where Leake looks to possibilities for contemporary art as it is presented in…

  17. The Resonance 107.3 FM Radio Art Collection

    DEFF Research Database (Denmark)

    Nielsen, Katrine; Kreutzfeldt, Jacob

    2016-01-01

    in metadata as well as in memories and texts. Applying this method of recalling, describing and reflecting to three examples of live-experimentation from the Resonance 107.3 FM collection, this article illustrates that archives of minor media and practises in community and art radio are valuable resources...... British community radio and practises of radio art. Based on work in the British Library Sound Archive, as well as on interviews with archivists and broadcasters, the article presents the collection and discusses its significance as an experiment in the aesthetic, social and political implications...

  18. Giant dipole resonance by many levels theory

    International Nuclear Information System (INIS)

    Mondaini, R.P.

    1977-01-01

    The many levels theory is applied to photonuclear effect, in particular, in giant dipole resonance. A review about photonuclear dipole absorption, comparing with atomic case is done. The derivation of sum rules; their modifications by introduction of the concepts of effective charges and mass and the Siegert theorem. The experimental distributions are compared with results obtained by curve adjustment. (M.C.K.) [pt

  19. Strategies for application of learning theories in art studio practices ...

    African Journals Online (AJOL)

    This study highlights the link between learning theories and art studio practices. The paper is of the opinion that if these theories are critically understood and applied to the practical aspect of fine and applied arts then learning will be more functional. Nigerian Journal of Technology and Education in Nigeria Vol. 8(1) 2003: ...

  20. Time dependent resonating Hartree-Bogoliubov theory

    International Nuclear Information System (INIS)

    Nishiyama, Seiya; Fukutome, Hideo.

    1989-01-01

    Very recently, we have developed a theory of excitations in superconducting Fermion systems with large quantum fluctuations that can be described by resonance of time dependent non-orthogonal Hartree-Bogoliubov (HB) wave functions with different correlation structures. We have derived a new kind of variation equation called the time dependent Resonating HB equation, in order to determine both the time dependent Resonating HB wave functions and coefficients of a superposition of the HB wave functions. Further we have got a new approximation for excitations from time dependent small fluctuations of the Resonating HB ground state, i.e., the Resonating HB RPA. The Res HB RPA equation is represented in a given single particle basis. It, however, has drawbacks that the constraints for the Res HB RPA amplitudes are not taken into account and the equation contains equations which are not independent. We shall derive another form of the Res HB RPA equation eliminating these drawbacks. The Res HB RPA gives a unified description of the vibrons and resonons and their interactions. (author)

  1. State-of-the-art Theory Application

    Science.gov (United States)

    Gully, S.

    1983-01-01

    Nonlinear failure detection and isolation (FDI), robust FDI, coordinate controller, detector, estimator, and isolator, AI/modern systems theory, sensor fusion, and man-machine interaction are addressed.

  2. Resonances, scattering theory and rigged Hilbert spaces

    International Nuclear Information System (INIS)

    Parravicini, G.; Gorini, V.; Sudarshan, E.C.G.

    1979-01-01

    The problem of decaying states and resonances is examined within the framework of scattering theory in a rigged Hilbert space formalism. The stationary free, in, and out eigenvectors of formal scattering theory, which have a rigorous setting in rigged Hilbert space, are considered to be analytic functions of the energy eigenvalue. The value of these analytic functions at any point of regularity, real or complex, is an eigenvector with eigenvalue equal to the position of the point. The poles of the eigenvector families give origin to other eigenvectors of the Hamiltonian; the singularities of the out eigenvector family are the same as those of the continued S matrix, so that resonances are seen as eigenvectors of the Hamiltonian with eigenvalue equal to their location in the complex energy plane. Cauchy theorem then provides for expansions in terms of complete sets of eigenvectors with complex eigenvalues of the Hamiltonian. Applying such expansions to the survival amplitude of a decaying state, one finds that resonances give discrete contributions with purely exponential time behavior; the background is of course present, but explicitly separated. The resolvent of the Hamiltonian, restricted to the nuclear space appearing in the rigged Hilbert space, can be continued across the absolutely continuous spectrum; the singularities of the continuation are the same as those of the out eigenvectors. The free, in and out eigenvectors with complex eigenvalues and those corresponding to resonances can be approximated by physical vectors in the Hilbert space, as plane waves can. The need for having some further physical information in addition to the specification of the total Hamiltonian is apparent in the proposed framework. The formalism is applied to the Lee-Friedrichs model. 48 references

  3. Evaluating Art Studio Courses at Sultan Qaboos University in Light of the Discipline Based Art Education Theory

    Science.gov (United States)

    Al-Amri, Mohammed

    2010-01-01

    Discipline-Based Art Education (DBAE), a theory developed in the USA, has been influential but also used in Art Education institutions world-wide. One of its stated goals was to develop the quality of teaching art education. Today, it is used as a theory for identifying and assessing good practices in the field of Art Education. The purpose of…

  4. Parallel experience: how art and art theory can inform ethics in human research.

    Science.gov (United States)

    Schwartz, L

    2003-12-01

    Trends in ethical research involving humans emphasise the importance of collaboration, of involving research subjects, alongside the researchers in the construction and implementation of research. This paper will explore parallels derived from another tradition of investigation of the human: art and art theory. An artist's inquiry into the problems of human research will be described, followed by the application of arguments from art theory to research practice. Recently artist Christine Borland has provided examples in which the lack of collaboration in research has caused injustice. Borland's work reflects these ethical dilemmas and questions the procedures and assumptions involved. In most cases the value of subject anonymity is called into question because it reduces the subjects' control over themselves. The application of art theory, which has already considered these problems, helps question and explore the ways in which the subject turned object of artistic or scientific interpretation can maintain some control and dignity.

  5. Generalized Net Model of the Cognitive and Neural Algorithm for Adaptive Resonance Theory 1

    Directory of Open Access Journals (Sweden)

    Todor Petkov

    2013-12-01

    Full Text Available The artificial neural networks are inspired by biological properties of human and animal brains. One of the neural networks type is called ART [4]. The abbreviation of ART stands for Adaptive Resonance Theory that has been invented by Stephen Grossberg in 1976 [5]. ART represents a family of Neural Networks. It is a cognitive and neural theory that describes how the brain autonomously learns to categorize, recognize and predict objects and events in the changing world. In this paper we introduce a GN model that represent ART1 Neural Network learning algorithm [1]. The purpose of this model is to explain when the input vector will be clustered or rejected among all nodes by the network. It can also be used for explanation and optimization of ART1 learning algorithm.

  6. One-loop renormalization of Resonance Chiral Theory: scalar and pseudoscalar resonances

    International Nuclear Information System (INIS)

    Rosell, Ignasi; Ruiz-FemenIa, Pedro; Portoles, Jorge

    2005-01-01

    We consider the Resonance Chiral Theory with one multiplet of scalar and pseudoscalar resonances, up to bilinear couplings in the resonance fields, and evaluate its β-function at one-loop with the use of the background field method. Thus we also provide the full set of operators that renormalize the theory at one loop and render it finite

  7. Vanishing chiral couplings in the large-NC resonance theory

    International Nuclear Information System (INIS)

    Portoles, Jorge; Rosell, Ignasi; Ruiz-Femenia, Pedro

    2007-01-01

    The construction of a resonance theory involving hadrons requires implementing the information from higher scales into the couplings of the effective Lagrangian. We consider the large-N C chiral resonance theory incorporating scalars and pseudoscalars, and we find that, by imposing LO short-distance constraints on form factors of QCD currents constructed within this theory, the chiral low-energy constants satisfy resonance saturation at NLO in the 1/N C expansion

  8. Rethinking the Institutional Theory of George Dickie: The Art Circles

    Directory of Open Access Journals (Sweden)

    Marko Đorđević

    2016-04-01

    Full Text Available This paper initially revisits the institutional theory of George Dickie, which originated in relation to Arthur Danto’s “The Artworld” and the works of other analytic philosophers dealing with art theory at the time. This contextualization is followed by an attempt at finding possible relations and theoretical developments of Dickie’s work in theorists such as Howard S. Becker and Pierre Bourdieu. The aim is to find basic correlations and differences between Dickie’s theory, Becker’s symbolic interactionism and Bourdieu’s field theory. The final segment consists of linking the interpreted theoretical terms and summing up the possibilities that arise out of them for contemporary art theory.

  9. Art-matrix theory and cognitive distance: Farago, Preziosi, and Gell on art and enchantment

    Directory of Open Access Journals (Sweden)

    Jakub Stejskal

    2015-12-01

    Full Text Available Theories that treat art objects primarily as agents embedded in a causal nexus of agent–patient relationships, as opposed to studying them as expressions or symbols encoding meanings, tend to identify art’s agency with its power to enchant recipients. I focus on two such approaches, the art-matrix theory of Claire Farago and Donald Preziosi and the art-nexus theory of Alfred Gell. Their authors stress the potential of art to make its enchanting power the topic of our experience with it, that is, to disenchant its own enchantment. This raises the following question: If artworks are to be understood as agents enchanting their recipients, how can they become forces of disenchantment? I argue that the shift in perspective from perceiving art objects as indices of agency within a matrix/nexus to approaching them as possible means of gaining cognitive distance is inadequately addressed by both theories; this is due to features inherent to their respective theoretical outlooks.

  10. Theory of RF superconductivity for resonant cavities

    Science.gov (United States)

    Gurevich, Alex

    2017-03-01

    An overview of a theory of electromagnetic response of superconductors in strong radio-frequency (RF) electromagnetic fields is given with the emphasis on applications to superconducting resonant cavities for particle accelerators. The paper addresses fundamentals of the BCS surface resistance, the effect of subgap states and trapped vortices on the residual surface resistance at low RF fields, and a nonlinear surface resistance at strong fields, particularly the effect of the RF field suppression of the surface resistance. These issues are essential for the understanding of the field dependence of high quality factors Q({B}a)˜ {10}10{--}{10}11 achieved on the Nb cavities at 1.3-2 K in strong RF fields B a close to the depairing limit, and the extended Q({B}a) rise which has been observed on Ti and N-treated Nb cavities. Possible ways of further increase of Q({B}a) and the breakdown field by optimizing impurity concentration at the surface and by multilayer nanostructuring with materials other than Nb are discussed.

  11. Chemical shift of neutron resonances and some ideas on neutron resonances and scattering theory

    International Nuclear Information System (INIS)

    Ignatovich, V.K.; )

    2002-01-01

    The dependence of positions of neutron resonances in nuclei in condensed matter on chemical environment is considered. A possibility of theoretical description of neutron resonances, different from R-matrix theory is investigated. Some contradictions of standard scattering theory are discussed and a new approach without these contradictions is formulated [ru

  12. One-loop Renormalization of Resonance Chiral Theory with Scalar and Pseudoscalar Resonances

    International Nuclear Information System (INIS)

    Rosell, I.

    2007-01-01

    The divergent part of the generating functional of the Resonance Chiral Theory is evaluated up to one loop when one multiplet of scalar and pseudoscalar resonances are included and interaction terms which couple up to two resonances are considered. Hence we obtain the renormalization of the couplings of the initial Lagrangian and, moreover, the complete list of operators that make this theory finite, at this order

  13. Spectral approach to optical resonator theory

    International Nuclear Information System (INIS)

    Feit, M.D.; Fleck, J.A. Jr.

    1981-01-01

    A new computational method for unloaded optical resonators is developed based on the discrete Fourier analysis of informaton generated by repated iterations of the optical field corresponding to transits between reflectors. The method is a straightforward extension of the propagating beam method developed earlier for optical fibers for extracting modal properties from numerical solutions to the paraxial scalar wave equation. The method requires computation of a field correlation function, whose Fourier transform reveals the eigenmodes as resonant peaks. Analysis of the location and breadth of these peaks determines the resonator eigenvalues When the eigenvalues are known, additional discrete Fourier transforms of the field are used to generate the mode eigenfunctions. This new method makes possible the unambiguous identification and accurate characterization of the entire spectrum of transverse resonator modes

  14. The Geometric Theory of Roof Reflector Resonators

    Science.gov (United States)

    1976-12-01

    reflector, if properly oriented, (The terms "roof-top prism ," "right-angle prism ," and - incorrectly - " Porro prism " are encountered in .the literature...Q-switch prisms ) in laser resonators have been infrequent compared to the attention given spherical mirrors. This chapter summarizes the relevant...designator (Refs 42 and 43). In one experiment, a 900 roof prism was tested in a resonator with a 70% reflecting filat mirror. Thus, in Fig. 2, the right roof

  15. Theory of neutron resonance cross sections for safety applications

    International Nuclear Information System (INIS)

    Froehner, F.H.

    1992-09-01

    Neutron resonances exert a strong influence on the behaviour of nuclear reactors, especially on their response to the temperature changes accompanying power excursions, and also on the efficiency of shielding materials. The relevant theory of neutron resonance cross sections including the practically important approximations is reviewed, both for the resolved and the unresolved resonance region. Numerical techniques for Doppler broadening of resonances are presented, and the construction of group constants and especially of self-shielding factors for neutronics calculations is outlined. (orig.) [de

  16. Continuous neutron slowing down theory applied to resonances

    International Nuclear Information System (INIS)

    Segev, M.

    1977-01-01

    Neutronic formalisms that discretize the neutron slowing down equations in large numerical intervals currently account for the bulk effect of resonances in a given interval by the narrow resonance approximation (NRA). The NRA reduces the original problem to an efficient numerical formalism through two assumptions: resonance narrowness with respect to the scattering bands in the slowing down equations and resonance narrowness with respect to the numerical intervals. Resonances at low energies are narrow neither with respect to the slowing down ranges nor with respect to the numerical intervals, which are usually of a fixed lethargy width. Thus, there are resonances to which the NRA is not applicable. To stay away from the NRA, the continuous slowing down (CSD) theory of Stacey was invoked. The theory is based on a linear expansion in lethargy of the collision density in integrals of the slowing down equations and had notable success in various problems. Applying CSD theory to the assessment of bulk resonance effects raises the problem of obtaining efficient quadratures for integrals involved in the definition of the so-called ''moderating parameter.'' The problem was solved by two approximations: (a) the integrals were simplified through a rationale, such that the correct integrals were reproduced for very narrow or very wide resonances, and (b) the temperature-broadened resonant line shapes were replaced by nonbroadened line shapes to enable analytical integration. The replacement was made in such a way that the integrated capture and scattering probabilities in each resonance were preserved. The resulting formalism is more accurate than the narrow-resonance formalisms and is equally as efficient

  17. Modern Theory of Gratings Resonant Scattering: Analysis Techniques and Phenomena

    CERN Document Server

    Sirenko, Yuriy K

    2010-01-01

    Diffraction gratings are one of the most popular objects of analysis in electromagnetic theory. The requirements of applied optics and microwave engineering lead to many new problems and challenges for the theory of diffraction gratings, which force us to search for new methods and tools for their resolution. In Modern Theory of Gratings, the authors present results of the electromagnetic theory of diffraction gratings that will constitute the base of further development of this theory, which meet the challenges provided by modern requirements of fundamental and applied science. This volume covers: spectral theory of gratings (Chapter 1) giving reliable grounds for physical analysis of space-frequency and space-time transformations of the electromagnetic field in open periodic resonators and waveguides; authentic analytic regularization procedures (Chapter 2) that, in contradistinction to the traditional frequency-domain approaches, fit perfectly for the analysis of resonant wave scattering processes; paramet...

  18. For a minor art: resonances between art, clinical practice and madness nowadays

    Directory of Open Access Journals (Sweden)

    Elizabeth Maria Freire de Araújo Lima

    2007-01-01

    Full Text Available We discuss the changes that were brought about in Brazil in the 20th century related to the acceptance of works of art produced in clinics or, in any way, other than those conventionally accepted by the artistic community. The enlargement of this field, now including dissenting works of art, seems to indicate a change in contemporary sensibility therefore shifting the relationships between art, clinical practice and madness itself.

  19. Socio-Cultural Theories of Cognitive Development: Implications for Teaching Theory in the Visual Arts.

    Science.gov (United States)

    Fielding, Rob

    1989-01-01

    Explicates the socio-cultural developmental theories of Vygotsky and Feuerstein which advocate teacher mediated learning in order to stimulate and accelerate development. Implications for art education include the need for the teacher to become involved in the enculturation of the child into the thinking processes and conceptual organization of…

  20. Common Ground of Two Paradigms: Incorporating Critical Theory into Current Art Therapy Practices

    Science.gov (United States)

    Nolan, Emily

    2013-01-01

    Clinical art therapy and studio-based community art therapy represent two major paradigms in art therapy practice. This viewpoint explores how critical theory can be incorporated into both paradigms and result in common ground between them. Critical theory encompasses an understanding of oppression in psychological, social, and cultural contexts…

  1. From Tinkering to Meddling: Notes on Engaging First Year Art Theory Students

    Science.gov (United States)

    Messham-Muir, Kit

    2012-01-01

    This paper considers the two-year-long process of redesigning Art Theory: Modernism, the initial core art theory course at The University of Newcastle in Australia, with the aim of increasing the academic engagement of first year fine art students. First year students are particularly vulnerable to dropping out if they feel disengaged from the…

  2. Theory and (In) Practice: The Problem of Integration in Art and Design Education

    Science.gov (United States)

    Rintoul, Jenny Ruth

    2014-01-01

    This paper examines the relationship between art "theory" and art "practice" in British art education at post-compulsory level, with a focus on the ways in which theory is framed and delivered and what this means for its integration. Drawing upon constructions of knowledge and approaches to integration as a technique and…

  3. Theory of the cancellation of 4-photon resonances by an off-resonance 3-photon cancellation

    DEFF Research Database (Denmark)

    Elk, M.; Lambropoulos, P.; Tang, X.

    1992-01-01

    We present a complete account of our recent work [Phys. Rev. A 44, 31 (1991)] in which we investigate the theory of cancellation by interference between the absorption of three fundamental laser photons and one third-harmonic photon. The theory is formulated in terms of the density matrix so...... as to take detunings, dephasing, and laser bandwidth into account. The result is a theory of cancellation for finite detuning that explains how four-photon resonances can be canceled by a three-photon mechanism if there is an atomic level at near-three-photon resonance. The treatment is extended to focused...

  4. The role of resonances in chiral perturbation theory

    International Nuclear Information System (INIS)

    Ecker, G.; Rafael, E. de

    1988-09-01

    The strong interactions of low-lying meson resonances (spin ≤ 1) with the octet of pseudoscalar mesons (π,Κ,η) are considered to lowest order in the derivative expansion of chiral SU(3). The resonance contributions to the coupling constants of the O(p 4 ) effective chiral lagrangian involving pseudoscalar fields only are determined. These low-energy coupling constants are found to be dominated by the resonance contributions. Although we do not treat the vector and axial-vector mesons as gauge bosons of local chiral symmetry, vector meson dominance emerges as a prominent result of our analysis. As a further application of chiral resonance couplings, we calculate the electromagnetic pion mass difference to lowest order in chiral perturbation theory with explicit resonance fields. 29 refs., 2 figs., 5 tabs. (Author)

  5. A History of Design Theory in Art Education

    Science.gov (United States)

    Kim, Nanyoung

    2006-01-01

    Since Discipline-Based Art Education (DBAE) began to advocate the teaching of art based on art subjects and knowledge rather than creative self-expression, the elements and principles of design have taken a firm place in various art curricula, textbooks, and national and state Visual Arts Standards. This article intends to trace the history of…

  6. Spatiotemporal Stochastic Resonance:Theory and Experiment

    Science.gov (United States)

    Peter, Jung

    1996-03-01

    The amplification of weak periodic signals in bistable or excitable systems via stochastic resonance has been studied intensively over the last years. We are going one step further and ask: Can noise enhance spatiotemporal patterns in excitable media and can this effect be observed in nature? To this end, we are looking at large, two dimensional arrays of coupled excitable elements. Due to the coupling, excitation can propagate through the array in form of nonlinear waves. We observe target waves, rotating spiral waves and other wave forms. If the coupling between the elements is below a critical threshold, any excitational pattern will die out in the absence of noise. Below this threshold, large scale rotating spiral waves - as they are observed above threshold - can be maintained by a proper level of the noise[1]. Furthermore, their geometric features, such as the curvature can be controlled by the homogeneous noise level[2]. If the noise level is too large, break up of spiral waves and collisions with spontaneously nucleated waves yields spiral turbulence. Driving our array with a spatiotemporal pattern, e.g. a rotating spiral wave, we show that for weak coupling the excitational response of the array shows stochastic resonance - an effect we have termed spatiotemporal stochastic resonance. In the last part of the talk I'll make contact with calcium waves, observed in astrocyte cultures and hippocampus slices[3]. A. Cornell-Bell and collaborators[3] have pointed out the role of calcium waves for long-range glial signaling. We demonstrate the similarity of calcium waves with nonlinear waves in noisy excitable media. The noise level in the tissue is characterized by spontaneous activity and can be controlled by applying neuro-transmitter substances[3]. Noise effects in our model are compared with the effect of neuro-transmitters on calcium waves. [1]P. Jung and G. Mayer-Kress, CHAOS 5, 458 (1995). [2]P. Jung and G. Mayer-Kress, Phys. Rev. Lett.62, 2682 (1995). [3

  7. Nano-resonator frequency response based on strain gradient theory

    International Nuclear Information System (INIS)

    Miandoab, Ehsan Maani; Yousefi-Koma, Aghil; Pishkenari, Hossein Nejat; Fathi, Mohammad

    2014-01-01

    This paper aims to explore the dynamic behaviour of a nano-resonator under ac and dc excitation using strain gradient theory. To achieve this goal, the partial differential equation of nano-beam vibration is first converted to an ordinary differential equation by the Galerkin projection method and the lumped model is derived. Lumped parameters of the nano-resonator, such as linear and nonlinear springs and damper coefficients, are compared with those of classical theory and it is demonstrated that beams with smaller thickness display greater deviation from classical parameters. Stable and unstable equilibrium points based on classic and non-classical theories are also compared. The results show that, regarding the applied dc voltage, the dynamic behaviours expected by classical and non-classical theories are significantly different, such that one theory predicts the un-deformed shape as the stable condition, while the other theory predicts that the beam will experience bi-stability. To obtain the frequency response of the nano-resonator, a general equation including cubic and quadratic nonlinearities in addition to parametric electrostatic excitation terms is derived, and the analytical solution is determined using a second-order multiple scales method. Based on frequency response analysis, the softening and hardening effects given by two theories are investigated and compared, and it is observed that neglecting the size effect can lead to two completely different predictions in the dynamic behaviour of the resonators. The findings of this article can be helpful in the design and characterization of the size-dependent dynamic behaviour of resonators on small scales. (paper)

  8. Multifrequency Electron Paramagnetic Resonance Theory and Applications

    CERN Document Server

    Misra, Sushil K

    2011-01-01

    Filling the gap for a systematic, authoritative, and up-to-date review of this cutting-edge technique, this book covers both low and high frequency EPR, emphasizing the importance of adopting the multifrequency approach to study paramagnetic systems in full detail by using the EPR method. In so doing, it discusses not only the underlying theory and applications, but also all recent advances -- with a final section devoted to future perspectives.

  9. How Would Theory of Mind Play a Role in Comprehending Art?

    Science.gov (United States)

    Keskin, B.

    2009-01-01

    The way theory of mind takes part in comprehension of art is examined in this article. Because theory of mind and understanding of artwork involves some symbolic competency, the link between comprehending art (i.e., drawing, painting, sculpture, and music) and theory of mind is explained through symbolism. To understand a piece of symbolic…

  10. Sadomasochism or the Art of Loving: Fromm and Feminist Theory.

    Science.gov (United States)

    Chancer, Lynn S

    2017-08-01

    Although the work of Erich Fromm is not usually associated with feminist theory, his ideas overall are more consonant with contemporary notions of gender than usually recognized. This paper identifies three aspects of Fromm's thought worth feminist revisiting. The first relates to Fromm's gender-less use of sadomasochism to describe relationships based on dominance and subordination; this framework can be applied to sexist dynamics, though not limited to this context. Second, Fromm's vision of love as presented in The Art of Loving can be seen as kindred with Simone de Beauvoir's critique of romantic love and its flaws. Third, and relatedly, Fromm's concerns about the need for recognition as well as autonomy are compatible with Jessica Benjamin's notion of mutual recognition as developed in her book The Bonds of Love. All told, Frommian and feminist thought appear to be more connected than antagonistic.

  11. Stieltjes-moment-theory technique for calculating resonance width's

    International Nuclear Information System (INIS)

    Hazi, A.U.

    1978-12-01

    A recently developed method for calculating the widths of atomic and molecular resonances is reviewed. The method is based on the golden-rule definition of the resonance width, GAMMA(E). The method uses only square-integrable, L 2 , basis functions to describe both the resonant and the non-resonant parts of the scattering wave function. It employs Stieltjes-moment-theory techniques to extract a continuous approximation for the width discrete representation of the background continuum. Its implementation requires only existing atomic and molecular structure codes. Many-electron effects, such as correlation and polarization, are easily incorporated into the calculation of the width via configuration interaction techniques. Once the width, GAMMA(E), has been determined, the energy shift can be computed by a straightforward evaluation of the required principal-value integral. The main disadvantage of the method is that it provides only the total width of a resonance which decays into more than one channel in a multichannel problem. A review of the various aspects of the theory is given first, and then representative results that have been obtained with this method for several atomic and molecular resonances are discussed. 28 references, 3 figures, 4 tables

  12. The early years of string theory: The dual resonance model

    International Nuclear Information System (INIS)

    Ramond, P.

    1987-10-01

    This paper reviews the past quantum mechanical history of the dual resonance model which is an early string theory. The content of this paper is listed as follows: historical review, the Veneziano amplitude, the operator formalism, the ghost story, and the string story

  13. Multiple Literacies Theory: Discourse, Sensation, Resonance and Becoming

    Science.gov (United States)

    Masny, Diana

    2012-01-01

    This thematic issue on education and the politics of becoming focuses on how a Multiple Literacies Theory (MLT) plugs into practice in education. MLT does this by creating an assemblage between discourse, text, resonance and sensations. What does this produce? Becoming AND how one might live are the product of an assemblage (May, 2005; Semetsky,…

  14. Theory and Applications of Surface Plasmon Resonance, Resonant Mirror, Resonant Waveguide Grating, and Dual Polarization Interferometry Biosensors

    Directory of Open Access Journals (Sweden)

    Billy W. Day

    2010-11-01

    Full Text Available Biosensors have been used extensively in the scientific community for several purposes, most notably to determine association and dissociation kinetics, protein-ligand, protein-protein, or nucleic acid hybridization interactions. A number of different types of biosensors are available in the field, each with real or perceived benefits over the others. This review discusses the basic theory and operational arrangements of four commercially available types of optical biosensors: surface plasmon resonance, resonant mirror, resonance waveguide grating, and dual polarization interferometry. The different applications these techniques offer are discussed from experiments and results reported in recently published literature. Additionally, recent advancements or modifications to the current techniques are also discussed.

  15. Theory of inelastic effects in resonant atom-surface scattering

    International Nuclear Information System (INIS)

    Evans, D.K.

    1983-01-01

    The progress of theoretical and experimental developments in atom-surface scattering is briefly reviewed. The formal theory of atom-surface resonant scattering is reviewed and expanded, with both S and T matrix approaches being explained. The two-potential formalism is shown to be useful for dealing with the problem in question. A detailed theory based on the S-matrix and the two-potential formalism is presented. This theory takes account of interactions between the incident atoms and the surface phonons, with resonant effects being displayed explicitly. The Debye-Waller attenuation is also studied. The case in which the atom-surface potential is divided into an attractive part V/sub a/ and a repulsive part V/sub r/ is considered at length. Several techniques are presented for handling the scattering due to V/sub r/, for the case in which V/sub r/ is taken to be the hard corrugated surface potential. The theory is used to calculate the scattered intensities for the system 4 He/LiF(001). A detailed comparison with experiment is made, with polar scans, azimuthal scans, and time-of-flight measurements being considered. The theory is seen to explain the location and signature of resonant features, and to provide reasonable overall agreement with the experimental results

  16. Atomic many-body theory of giant resonances

    International Nuclear Information System (INIS)

    Kelly, H.P.; Altun, Z.

    1987-01-01

    In this paper the use of many-body perturbation theory (MBPT) to include effects of electron correlations is discussed. The various physical processes contributing to the broad photoionization cross sections of the rare gases are studied in terms of the relevant many-body diagrams. Use of the random phase approximation with exchange (RPAE) is discussed by Amusia and Cherepkov. Calculations using the relativistic RPAE are reviewed by Johnson. In addition, many-body perturbation theory (MBPT) is used to study resonances which are due to excitation of bound states degenerate with the continuum. Very interesting giant resonance structure can occur when an inner shell electron is excited into a vacant open-shell orbital of the same principal quantum number. A particular example which is studied is the neutral manganese atom 3p 6 3d 5 4s 2 ( 6 S), in which the spins of the five 3d electrons are aligned. A very large resonance occurs in the 3d and 4s cross sections due to 3p → 3d excitation near 51 eV, and calculations of this resonance by MBPT and RPAE are discussed. A second example of this type of resonance occurs in open-shell rare-earth atoms with configurations 4d 10 4f/sup n/5s 2 5p 6 s 2 . Calculations and experimental results will be discussed for the case of europium with a half-filled sub-shell 4f 7 . 71 references, 15 figures

  17. Detection of network attacks based on adaptive resonance theory

    Science.gov (United States)

    Bukhanov, D. G.; Polyakov, V. M.

    2018-05-01

    The paper considers an approach to intrusion detection systems using a neural network of adaptive resonant theory. It suggests the structure of an intrusion detection system consisting of two types of program modules. The first module manages connections of user applications by preventing the undesirable ones. The second analyzes the incoming network traffic parameters to check potential network attacks. After attack detection, it notifies the required stations using a secure transmission channel. The paper describes the experiment on the detection and recognition of network attacks using the test selection. It also compares the obtained results with similar experiments carried out by other authors. It gives findings and conclusions on the sufficiency of the proposed approach. The obtained information confirms the sufficiency of applying the neural networks of adaptive resonant theory to analyze network traffic within the intrusion detection system.

  18. The work of art as a manifestation of form: Formalistic materialism in the theory of art

    Directory of Open Access Journals (Sweden)

    Popović Radovan

    2015-01-01

    Full Text Available The basic purpose of this paper is to point out and theoretically illuminate the key moments of transformation and re-constitution of the art theory during the first half of XIX century, taking as its point of departure the role and influence of Organicism as a philosophico-reflexive basis, gnoseological postulate and methodological pattern. Sedlmayr's attempt at foundation of a comparative morphology of architectural styles, taking into account the three constitutive building elements as analytical tools of study of concrete-historical manifestations of style: material structure (building materials, technique and intended usability, is a matter of particular attention of the following analysis. Regarding Viollet-le-Duc, the stress is on the interpretation of his conception of architectural form as the application of logically founded general laws of statics and construction, with a special emphasis on his thesis of logical and purposely-rational correspondence of the outer form and the functional structure of the interior. Finally, an attempt is made at the clarification of the revival of Viollet-le-Duc's explanatory pattern within the dynamic and subjectivistic conceptual transformations of form in Fiedler's, von Hildebrandt's and Focillon's theoretical conceptions.

  19. Reduction of sound transmission through fuselage walls by alternate resonance tuning (A.R.T.)

    Science.gov (United States)

    Bliss, Donald B.; Gottwald, James A.

    1989-01-01

    The ability of alternate resonance tuning (ART) to block sound transmission through light-weight flexible paneled walls by controlling the dynamics of the wall panels is considered. Analytical results for sound transmission through an idealized panel wall illustrate the effect of varying system parameters and show that one or more harmonics of the incident sound field can be cancelled by the present method. Experimental results demonstrate that very large transmission losses with reasonable bandwidths can be achieved by a simple ART panel barrier in a duct.

  20. Arnheim's Gestalt theory of visual balance: Examining the compositional structure of art photographs and abstract images

    OpenAIRE

    McManus, I C; Stöver, Katharina; Kim, Do

    2011-01-01

    In Art and Visual Perception, Rudolf Arnheim, following on from Denman Ross's A Theory of Pure Design, proposed a Gestalt theory of visual composition. The current paper assesses a physicalist interpretation of Arnheim's theory, calculating an image's centre of mass (CoM). Three types of data are used: a large, representative collection of art photographs of recognised quality; croppings by experts and non-experts of photographs; and Ross and Arnheim's procedure of placing a frame around obje...

  1. Ijo Art Theory: An Expose' | Mangiri | AFRREV IJAH: An International ...

    African Journals Online (AJOL)

    Nigerian traditional arts have received tremendous attention from individual researchers, writers and research institutions. These arts speak about those ethnic communities, which help to communicate and interpret their ideological framework. The traditional identity of the Ijo in her artistic culture and ideological foundation ...

  2. Relational Making: Re/Imagining Theories of Child Art

    Science.gov (United States)

    Sunday, Kristine E.

    2015-01-01

    In this article, I consider the changing landscape of art education and explore potential directions for the field to situate itself within the spaces of early childhood education. I position that current understandings of child art and its use in both research and practice in the early childhood classroom are limited by a lack of connection to…

  3. Semiclassical theory of resonance inelastic electron-molecule collisions

    International Nuclear Information System (INIS)

    Kazanskij, A.K.

    1986-01-01

    Semiclassical approach to the theory of resonance electron-molecule collisions, unlocal with respect to interatomic distance was developed. Two problems were considered: modified adiabatic approach for sigle-pole approximation of R-matrix and Fano-Feshbach-Bardsley theory. It is shown that these problems are similar in semiclassical approximation. A simple equation system with coefficients expressed in quadratures was obtained. It enables to determine amplitudes of all processes (including dissociation adhesion, association ejection, free-free and free-bound transitions) in energetic representation with respect to nucleus vibrations in molecule with allowance for both descrete and continuous spectra of nucleus motion in molecule. Quantitative investigation of the system results to the notion of dynamic energy curve of intermediate state, generalizing the motion of such curve in boomerang theory

  4. Positive Art Therapy: Linking Positive Psychology to Art Therapy Theory, Practice, and Research

    Science.gov (United States)

    Wilkinson, Rebecca A.; Chilton, Gioia

    2013-01-01

    As a growing movement in the larger field of mental health, positive psychology has much to offer the art therapy profession, which in turn is uniquely poised to contribute to the study of optimal functioning. This article discusses the relationship of positive psychology to art therapy and its capacity to mobilize client strengths, to induce…

  5. Localized Plasmon resonance in metal nanoparticles using Mie theory

    Science.gov (United States)

    Duque, J. S.; Blandón, J. S.; Riascos, H.

    2017-06-01

    In this work, scattering light by colloidal metal nanoparticles with spherical shape was studied. Optical properties such as diffusion efficiencies of extinction and absorption Q ext and Q abs were calculated using Mie theory. We employed a MATLAB program to calculate the Mie efficiencies and the radial dependence of electric field intensities emitted for colloidal metal nanoparticles (MNPs). By UV-Vis spectroscopy we have determined the LSPR for Cu nanoparticles (CuNPs), Ni nanoparticles (NiNPs) and Co nanoparticles (CoNPs) grown by laser ablation technique. The peaks of resonances appear in 590nm, 384nm and 350nm for CuNPs, NiNPs and CoNPs respectively suspended in water. Changing the medium to acetone and ethanol we observed a shift of the resonance peaks, these values agreed with our simulations results.

  6. Diphoton resonance in F-theory inspired flipped SO(10)

    Energy Technology Data Exchange (ETDEWEB)

    Leontaris, George K. [Ioannina University, Physics Department, Theory Division, Ioannina (Greece); Shafi, Qaisar [University of Delaware, Department of Physics and Astronomy, Bartol Research Institute, Newark, DE (United States)

    2016-10-15

    Motivated by the di-photon excess at 750 GeV reported by the ATLAS and CMS experiments, we present an F-theory inspired flipped SO(10) model embedded in E{sub 6}. The low energy spectrum includes the three MSSM chiral families, vector-like colour triplets, several pairs of charged SU(2){sub L} singlet fields (E{sup c}, anti E{sup c}), as well as MSSM singlets, one or more of which could contribute to the di-photon resonance. A total decay width in the multi-GeV range can arise from couplings involving the singlet and MSSM fields. (orig.)

  7. Contribution to analytical theory of neutron resonance absorption in heterogeneous reactor systems with cylindrical geometry

    International Nuclear Information System (INIS)

    Slipicevic, K.

    1968-12-01

    Following a review of the existing theories od resonance absorption this thesis includes a new approach for calculating the effective resonance integral of absorbed neutrons, new approximate formula for the penetration factor, an analysis of the effective resonance integral and the correction of the resonance integral taking into account the interference of potential and resonance dissipation. A separate chapter is devoted to calculation of the effective resonance integral for the regular reactor lattice with cylindrical fuel elements

  8. Exploring the Disjunctures between Theory and Practice in Community College Visual Arts Programs

    Science.gov (United States)

    Holland, Arnold

    2012-01-01

    This study explored the perceptions of ten community college visual arts faculty in five different community college settings with regard to the theory and practice disjunctures they were experiencing in their roles as instructors teaching foundational level courses within visual arts programs. The study illuminated the responses of community…

  9. Relations between Secondary Art Teachers' Personal Education Theories and Attitudes about Inclusion

    Science.gov (United States)

    Manjack, Sharon Kay

    2011-01-01

    The goal of this study was multifold: to define secondary art teachers. personal practical theories about the purposes of art education; to examine teachers. attitudes toward the inclusion of students with learning disabilities (LD) and those with emotional/behavioral disabilities (EBD) into their classrooms; and to determine the relation between…

  10. Reader-Response Theory: An Analysis of a Work of Chinese Post Modern Art.

    Science.gov (United States)

    Ma, Yan

    1995-01-01

    Illustrates reader-response theory by discussing a piece of Chinese art, "A Book from the Sky." Examines the relationship between and among viewer, text or artwork, and artist; and attempts to determine the meanings viewers of different ages, genders, ethnicity, and professions construct in reaction to the work of art and to postmodern…

  11. DYNAMIC AND INCREMENTAL EXPLORATION STRATEGY IN FUSION ADAPTIVE RESONANCE THEORY FOR ONLINE REINFORCEMENT LEARNING

    Directory of Open Access Journals (Sweden)

    Budhitama Subagdja

    2016-06-01

    Full Text Available One of the fundamental challenges in reinforcement learning is to setup a proper balance between exploration and exploitation to obtain the maximum cummulative reward in the long run. Most protocols for exploration bound the overall values to a convergent level of performance. If new knowledge is inserted or the environment is suddenly changed, the issue becomes more intricate as the exploration must compromise the pre-existing knowledge. This paper presents a type of multi-channel adaptive resonance theory (ART neural network model called fusion ART which serves as a fuzzy approximator for reinforcement learning with inherent features that can regulate the exploration strategy. This intrinsic regulation is driven by the condition of the knowledge learnt so far by the agent. The model offers a stable but incremental reinforcement learning that can involve prior rules as bootstrap knowledge for guiding the agent to select the right action. Experiments in obstacle avoidance and navigation tasks demonstrate that in the configuration of learning wherein the agent learns from scratch, the inherent exploration model in fusion ART model is comparable to the basic E-greedy policy. On the other hand, the model is demonstrated to deal with prior knowledge and strike a balance between exploration and exploitation.

  12. Nursing theory: everything the artist spits is art?

    Science.gov (United States)

    Timpson, J

    1996-05-01

    This paper explores the concept and utility of nursing theory in and for the practice of nursing. Working from the premise that many nurse practitioners appear uncertain as to the value of theory in relation to their everyday working experience, the paper investigates the contribution nursing theory makes in terms of sustaining and developing nursing as a practice discipline. The fact that nursing theory remains at once poorly evaluated, articulated or understood appears to be compounded by a general perception of nurse theorists as being removed from the realities of the practice setting and by the confusion precipitated, not least, by the semantic ambiguity engendered by their writings. The paper reviews the complex relationships extant between the development of nursing theory in regard to its utility for nursing practice, and concludes by suggesting a practice-led perspective by which nursing theory may be better articulated and assimilated within the discipline. In order to facilitate the study, it has been necessary to investigate the historical, theoretical and philosophical imperatives pertaining not only to the development of nursing theory but to nursing research and nursing practice per se.

  13. Supergravity field theories and the art of constructing them

    International Nuclear Information System (INIS)

    Freedman, D.Z.

    1977-01-01

    The review of supergravity field theories includes global supersymmetry, supergravity, extended supergravity, minimal gauge coupling for spin-3/2 fields, and the general strategy of supergravity constructions. 39 references

  14. Artfulness

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    2011-01-01

    a collage of previously published materials on Artfulness, in this journal targeted teachers for dysfunctional behaviour children.......a collage of previously published materials on Artfulness, in this journal targeted teachers for dysfunctional behaviour children....

  15. Arnheim's Gestalt theory of visual balance: Examining the compositional structure of art photographs and abstract images.

    Science.gov (United States)

    McManus, I C; Stöver, Katharina; Kim, Do

    2011-01-01

    In Art and Visual Perception, Rudolf Arnheim, following on from Denman Ross's A Theory of Pure Design, proposed a Gestalt theory of visual composition. The current paper assesses a physicalist interpretation of Arnheim's theory, calculating an image's centre of mass (CoM). Three types of data are used: a large, representative collection of art photographs of recognised quality; croppings by experts and non-experts of photographs; and Ross and Arnheim's procedure of placing a frame around objects such as Arnheim's two black disks. Compared with control images, the CoM of art photographs was closer to an axis (horizontal, vertical, or diagonal), as was the case for photographic croppings. However, stronger, within-image, paired comparison studies, comparing art photographs with the CoM moved on or off an axis (the 'gamma-ramp study'), or comparing adjacent croppings on or off an axis (the 'spider-web study'), showed no support for the Arnheim-Ross theory. Finally, studies moving a frame around two disks, of different size, greyness, or background, did not support Arnheim's Gestalt theory. Although the detailed results did not support the Arnheim-Ross theory, several significant results were found which clearly require explanation by any adequate theory of the aesthetics of visual composition.

  16. Arnheim's Gestalt Theory of Visual Balance: Examining the Compositional Structure of Art Photographs and Abstract Images

    Directory of Open Access Journals (Sweden)

    I C McManus

    2011-08-01

    Full Text Available In Art and Visual Perception, Rudolf Arnheim, following on from Denman Ross's A Theory of Pure Design, proposed a Gestalt theory of visual composition. The current paper assesses a physicalist interpretation of Arnheim's theory, calculating an image's centre of mass (CoM. Three types of data are used: a large, representative collection of art photographs of recognised quality; croppings by experts and non-experts of photographs; and Ross and Arnheim's procedure of placing a frame around objects such as Arnheim's two black disks. Compared with control images, the CoM of art photographs was closer to an axis (horizontal, vertical, or diagonal, as was the case for photographic croppings. However, stronger, within-image, paired comparison studies, comparing art photographs with the CoM moved on or off an axis (the “gamma-ramp study”, or comparing adjacent croppings on or off an axis (the “spider-web study”, showed no support for the Arnheim-Ross theory. Finally, studies moving a frame around two disks, of different size, greyness, or background, did not support Arnheim's Gestalt theory. Although the detailed results did not support the Arnheim-Ross theory, several significant results were found which clearly require explanation by any adequate theory of the aesthetics of visual composition.

  17. Arnheim's Gestalt theory of visual balance: Examining the compositional structure of art photographs and abstract images

    Science.gov (United States)

    McManus, I C; Stöver, Katharina; Kim, Do

    2011-01-01

    In Art and Visual Perception, Rudolf Arnheim, following on from Denman Ross's A Theory of Pure Design, proposed a Gestalt theory of visual composition. The current paper assesses a physicalist interpretation of Arnheim's theory, calculating an image's centre of mass (CoM). Three types of data are used: a large, representative collection of art photographs of recognised quality; croppings by experts and non-experts of photographs; and Ross and Arnheim's procedure of placing a frame around objects such as Arnheim's two black disks. Compared with control images, the CoM of art photographs was closer to an axis (horizontal, vertical, or diagonal), as was the case for photographic croppings. However, stronger, within-image, paired comparison studies, comparing art photographs with the CoM moved on or off an axis (the ‘gamma-ramp study’), or comparing adjacent croppings on or off an axis (the ‘spider-web study’), showed no support for the Arnheim–Ross theory. Finally, studies moving a frame around two disks, of different size, greyness, or background, did not support Arnheim's Gestalt theory. Although the detailed results did not support the Arnheim–Ross theory, several significant results were found which clearly require explanation by any adequate theory of the aesthetics of visual composition. PMID:23145250

  18. Primate theory of mind: a state of the art review

    DEFF Research Database (Denmark)

    Byrnit, Jill

    2006-01-01

    -cognitive evner og siden Premack & Woodruff (1978) for første gang introducerede begrebet "theory of mind", er der blevet foretaget mange laboratorie-forsøg om mennesker og andre primaters evne til at attribuere mentale tilstande til andre. I nærværende artikel er størstedelen af disse forsøg med andre primater...

  19. Towards defending a semantic theory of expression in art: Revisiting ...

    African Journals Online (AJOL)

    Nelson Goodman's attempt to analyse the expressiveness of artworks in semantic terms has been widely criticised. In this paper I try to show how the use of an adapted version of his concept of exemplification, as proposed by Mark Textor, can help to alleviate the worst problems with his theory of expression.

  20. On Marx's theory of literature and art--An analysis of Marx's theory of literature and art in China, “Hibiscus Town”

    Institute of Scientific and Technical Information of China (English)

    申晓旭

    2016-01-01

    In the basic material and spiritual civilization highly abundant today, people in the United States to explore the origin of the hearts, but also the beautiful things combined with the general law. People start from the perspective of the theory and methods to explore and reflect the value of the arts, but also more pioneer artists to join the activities. Marxist literary theory is now a mature theoretical system of Marxist literary theory and discussion of specialized and not a complete discussion, but scattered in various chapters of his book. Marxist literary theory is the nature of literature, characteristics of the basic methods and principles, laws and social action. We must be content and form of literary works into the whole production process and the complex social relationships matter to go, in a dynamic social relations be investigated, in order to grasp the real laws and principles of literature and criticism.

  1. Theory of constraints: A state-of-art review

    Directory of Open Access Journals (Sweden)

    Maryam Orouji

    2015-11-01

    Full Text Available The theory of constraints (TOC is a management tool, which considers any manageable system as being limited in reaching more of its objectives by some constraints. According to TOC, there is always, at least, one single constraint, and TOC implements a concentrating process to detect the constraint and restructure the remaining of the organization around it. This paper presents an overview of different perspectives of TOC and its implementation in different industries such as project management, quality management, outsourcing, product mix, make-to-buy, accounting, banking and health care, etc. The results indicate that the method has been extensively implemented in different areas of accounting.

  2. Electromagnetic structure of the lowest-lying decuplet resonances in covariant chiral perturbation theory

    International Nuclear Information System (INIS)

    Geng, L. S.; Camalich, J. Martin; Vacas, M. J. Vicente

    2009-01-01

    We present a calculation of the leading SU(3)-breaking O(p 3 ) corrections to the electromagnetic moments and charge radius of the lowest-lying decuplet resonances in covariant chiral perturbation theory. In particular, the magnetic dipole moment of the members of the decuplet is predicted fixing the only low-energy constant (LEC) present up to this order with the well-measured magnetic dipole moment of the Ω - . We predict μ Δ ++ =6.04(13) and μ Δ + =2.84(2), which agree well with the current experimental information. For the electric quadrupole moment and the charge radius, we use state-of-the-art lattice QCD results to determine the corresponding LECs, whereas for the magnetic octupole moment there is no unknown LEC up to the order considered here, and we obtain a pure prediction. We compare our results with those reported in large N c , lattice QCD, heavy-baryon chiral perturbation theory, and other models.

  3. How to use a blog to teach arts students science theory

    DEFF Research Database (Denmark)

    Herriott, Richard

    2016-01-01

    The learning outcome was for students with an arts background to become familiar with the key concepts of natural science philosophy. These would then be of use in assessing empirical data, theory and designing experiments to test concepts. The students were able to remain engaged with the course...

  4. Testing the Theory of Successful Intelligence in Teaching Grade 4 Language Arts, Mathematics, and Science

    Science.gov (United States)

    Sternberg, Robert J.; Jarvin, Linda; Birney, Damian P.; Naples, Adam; Stemler, Steven E.; Newman, Tina; Otterbach, Renate; Parish, Carolyn; Randi, Judy; Grigorenko, Elena L.

    2014-01-01

    This study addressed whether prior successes with educational interventions grounded in the theory of successful intelligence could be replicated on a larger scale as the primary basis for instruction in language arts, mathematics, and science. A total of 7,702 4th-grade students in the United States, drawn from 223 elementary school classrooms in…

  5. Developing Integrated Arts Curriculum in Hong Kong: Chaos Theory at Work?

    Science.gov (United States)

    Wong, Marina

    2013-01-01

    This article reports the development of integrated arts curriculum in two Hong Kong secondary schools over a 9-year period. Initial findings display a range of individual responses to educational change that are both non-predictable and non-linear. Chaos theory is used to explain these varied responses in terms of bifurcations. The findings of…

  6. Traffic Flow Theory - A State-of-the-Art Report: Revised Monograph on Traffic Flow Theory

    Science.gov (United States)

    2002-04-13

    This publication is an update and expansion of the Transportation Research Board (TRB) Special Report 165, "Traffic Flow Theory," published in 1975. This updating was undertaken on recommendation of the TRB's Committee on Traffic Flow Theory and Char...

  7. Theory of Queer Identities: Representation in Contemporary East-European Art and Culture

    Directory of Open Access Journals (Sweden)

    Saša Kesić

    2017-10-01

    Full Text Available Starting from the general theory of identity, gender theory, queer theory and theory of bio/necropolitics, as theoretical platforms, in a few case studies I will analyze the Pride Parade as a form of manifestation of gender body and queer body representations in visual arts, and gender and queer body representations in mass media. My hypothesis is that the key for understanding the chosen case studies is in understanding the relation between their aesthetics, political and social interventions. This will consider political involvement, social injustice, alienation, stereotypes on which ideological manipulations are based etc., as well as the creative strategies used for moving the borders of visual art in searching for authentically-performed creative expressions and engagements. In the time we live it is necessary for the politicization of art to use queer tactics, which work as political strategies of subversion of every stable structure of power. Queer tactics, in my opinion, are weapons in disturbance of the stable social mechanisms, which every power tries to establish and perform over any ‘mass’, in order to transform it to race, gender, tribe, nation or class.   Article received: June 6, 2017; Article accepted: June 20, 2017; Published online: October 15, 2017; Original scholarly paper How to cite this article: Kesić, Saša. "Theory of Queer Identities: Representation in Contemporary East-European Art and Culture." AM Journal of Art and Media Studies 14 (2017: 123-131. doi: 10.25038/am.v0i14.211

  8. The theory of coherent resonance tunneling of interacting electrons

    International Nuclear Information System (INIS)

    Elesin, V. F.

    2001-01-01

    Analytical solutions of the Schrödinger equation for a two-barrier structure (resonance-tunnel diode) with open boundary conditions are found within the model of coherent tunneling of interacting electrons. Simple expressions for resonance current are derived which enable one to analyze the current-voltage characteristics, the conditions of emergence of hysteresis, and singularities of the latter depending on the parameters of resonance-tunnel diode. It is demonstrated that the hysteresis is realized if the current exceeds some critical value proportional to the square of resonance level width.

  9. Theory of electrically controlled resonant tunneling spin devices

    Science.gov (United States)

    Ting, David Z. -Y.; Cartoixa, Xavier

    2004-01-01

    We report device concepts that exploit spin-orbit coupling for creating spin polarized current sources using nonmagnetic semiconductor resonant tunneling heterostructures, without external magnetic fields. The resonant interband tunneling psin filter exploits large valence band spin-orbit interaction to provide strong spin selectivity.

  10. Analytically continued Fock space multi-reference coupled-cluster theory: Application to the shape resonance

    International Nuclear Information System (INIS)

    Pal, Sourav; Sajeev, Y.; Vaval, Nayana

    2006-01-01

    The Fock space multi-reference coupled-cluster (FSMRCC) method is used for the study of the shape resonance energy and width in an electron-atom/molecule collision. The procedure is based upon combining a complex absorbing potential (CAP) with FSMRCC theory. Accurate resonance parameters are obtained by solving a small non-Hermitian eigen-value problem. We study the shape resonances in e - -C 2 H 4 and e - -Mg

  11. ARTS

    DEFF Research Database (Denmark)

    Mahadevan, Shankar; Virk, Kashif M.; Madsen, Jan

    2007-01-01

    and load conditions, consequences of different task mappings to processors (software or hardware) including memory and power usage, and effects of RTOS selection, including scheduling, synchronization and resource allocation policies. We present the application and platform models of ARTS as well...

  12. Reaction theory for analysis of nuclear giant resonances production and decay processes

    International Nuclear Information System (INIS)

    Foglia, G.A.

    1991-01-01

    The existence of mixing parameters connected to the different decay forms of the giant resonances was theoretically justified, and their energy dependence determined as well using a reaction theory which treats in a consistent manner the giant multipolar resonances formation and their different decay modes. (L.C.J.A.)

  13. From the CERN web: The Art of Science, Theory corridor, DAMPE and more

    CERN Multimedia

    2016-01-01

    This section highlights articles, blog posts and press releases published in the CERN web environment over the past weeks. This way, you won’t miss a thing...     "Move over Mr Einstein!" A scientific experiment ignites creativity and dialogue 26 February – CMS Collaboration The inspiration for the latest art exhibition at the Cité du Temps came from a scientific experiment the height of a six-floor building, built to the precision of the thickness of a human hair. “CMS – The Art of Science”, by Michael Hoch, running from 27 February to 10 April 2016, delivers a dynamic dialogue between art and science. A combination of photography, collage and installations, it pays tribute to the thousands of people who constructed the Compact Muon Solenoid (CMS) Experiment at CERN’s Large Hadron Collider (LHC) near Geneva. Continue to read…   One of CERN’s Theory corridors &ndas...

  14. Magnetic resonance imaging of the cardiovascular system: present state of the art and future potential

    International Nuclear Information System (INIS)

    Jacobson, H.G.

    1988-01-01

    State-of-the-art magnetic resonance imaging (MRI) generates high-resolution images of the cardiovascular system. Conventional MRI techniques provide images in six to ten minutes per tomographic slice. New strategies have substantially improved the speed of imaging. The technology is relatively expensive, and its cost-effectiveness remains to be defined in relation to other effective, less expensive, and noninvasive technologies, such as echocardiography and nuclear medicine. The ultimate role of MRI will depend on several factors, including the development of specific applications such as (1) noninvasive angiography, especially of the coronary arteries;(2) noninvasive, high-resolution assessment of regional myocardial blood flow distribution (e.g., using paramagnetic contrast agents); (3) characterization of myocardial diseases using proton-relaxation property changes; and (4) evaluation of in vivo myocardial biochemistry. The three-dimensional imaging capability and the ability to image cardiovascular structures without contrast material give MRI a potential advantage over existing noninvasive diagnostic imaging techniques. This report analyzes current applications of MRI to the cardiovascular system and speculates on their future

  15. Heavy baryon chiral perturbation theory and the spin 3/2 delta resonances

    Energy Technology Data Exchange (ETDEWEB)

    Kambor, J.

    1996-12-31

    Heavy baryon chiral perturbation theory is briefly reviewed, paying particular attention to the role of the spin 3/2 delta resonances. The concept of resonance saturation for the baryonic sector is critically discussed. Starting from a relativistic formulation of the pion-nucleon-delta system, the heavy baryon chiral Lagrangian including spin 3/2 resonances is constructed by means of a 1/m-expansion. The effective theory obtained admits a systematic expansion in terms of soft momenta, the pion mass M{sub {pi}} and the delta-nucleon mass difference {Delta}. (author). 22 refs.

  16. On the kinetic theory of parametric resonance in relativistic plasma

    International Nuclear Information System (INIS)

    El-Ashry, M.Y.

    1982-08-01

    The instability of relativistic hot plasma located in high-frequency external electric field is studied. The dispersion relation, in the case when the plasma electrons have relativistic oscillatory motion, is obtained. It is shown that if the electron Deby's radius is less than the wave length of plasma oscillation and far from the resonance on the overtones of the external field frequency, the oscillation build-up is possible. It is also shown that taking into account the relativistic motion of electrons leads to a considerable decrease in the frequency at which the parametric resonance takes place. (author)

  17. Resonance cones below the ion cyclotron frequency: theory and experiment

    International Nuclear Information System (INIS)

    Bellan, P.

    1976-03-01

    The resonance cones existing below the ion cyclotron frequency, ω/sub c/sub i//, are shown, theoretically and experimentally, to be the asymptotes of hyperbolic constant-phase surfaces of low-frequency ion acoustic waves. Above ω/sub c/sub i// the surfaces transform into ellipses that are related to the electrostatic ion cyclotron waves and ion acoustic waves

  18. Coupled-mode theory and Fano resonances in guided-mode resonant gratings: the conical diffraction mounting.

    Science.gov (United States)

    Bykov, Dmitry A; Doskolovich, Leonid L; Soifer, Victor A

    2017-01-23

    We study resonances of guided-mode resonant gratings in conical mounting. By developing 2D time-dependent coupled-mode theory we obtain simple approximations of the transmission and reflection coefficients. Being functions of the incident light's frequency and in-plane wave vector components, the obtained approximations can be considered as multi-variable generalizations of the Fano line shape. We show that the approximations are in good agreement with the rigorously calculated transmission and reflection spectra. We use the developed theory to investigate angular tolerances of the considered structures and to obtain mode excitation conditions. In particular, we obtain the cross-polarization mode excitation conditions in the case of conical mounting.

  19. The Pursuit of Memory: Examining Art Teaching and Pedagogical Practices through Hannah Arendt's Actor-Spectator Theory

    Science.gov (United States)

    Lee, Mun Yee

    2011-01-01

    Memories of our schooling and teaching experiences shape our curriculum and pedagogical decision-making process in art education when we become teachers and teacher educators. In this paper, using Hannah Arendt's Actor-Spectator Theory, I engage in retrospective critical introspection of my practices as an art teacher and curriculum developer in…

  20. Cardinal Ratzinger’s theory of the biblical art and music

    Directory of Open Access Journals (Sweden)

    Robert Kaczorowski

    2005-12-01

    Full Text Available In our times Joseph Ratzinger is considered as the greatest theologian among cardinals and the most prominent cardinal among theologians. As a professor of theology, but not only, he wrote many books, e.g. A New Song for the Lord: Faith in Christ and Liturgy Today, where he shows relations between liturgy and music of the church. The article by Robert Kaczorowski tells about Ratzinger’s biblical context of art and music. The author presents the analysis of Ps 47, 8 and the evolution of Hebrew’s word maskil to Greek’s word psalate. Kaczorowski adds that the biblical theory of art and music is still current.

  1. Including the Δ(1232) resonance in baryon chiral perturbation theory

    International Nuclear Information System (INIS)

    Hacker, C.; Wies, N.; Scherer, S.; Gegelia, J.

    2005-01-01

    Baryon chiral perturbation theory with explicit Δ(1232) degrees of freedom is considered. The most general interactions of pions, nucleons, and Δ consistent with all underlying symmetries as well as with the constraint structure of higher-spin fields are constructed. By use of the extended on-mass-shell renormalization scheme, a manifestly Lorentz-invariant effective-field theory with a systematic power counting is obtained. As applications, we discuss the mass of the nucleon, the pion-nucleon σ term, and the pole of the Δ propagator

  2. Double giant resonances in time-dependent relativistic mean-field theory

    International Nuclear Information System (INIS)

    Ring, P.; Podobnik, B.

    1996-01-01

    Collective vibrations in spherical nuclei are described in the framework of time-dependent relativistic mean-field theory (RMFT). Isoscalar quadrupole and isovector dipole oscillations that correspond to giant resonances are studied, and possible excitations of higher modes are investigated. We find evidence for modes which can be interpreted as double resonances. In a quantized RMFT they correspond to two-phonon states. (orig.)

  3. Analysis of specular resonance in dielectric bispheres using rigorous and geometrical-optics theories.

    Science.gov (United States)

    Miyazaki, Hideki T; Miyazaki, Hiroshi; Miyano, Kenjiro

    2003-09-01

    We have recently identified the resonant scattering from dielectric bispheres in the specular direction, which has long been known as the specular resonance, to be a type of rainbow (a caustic) and a general phenomenon for bispheres. We discuss the details of the specular resonance on the basis of systematic calculations. In addition to the rigorous theory, which precisely describes the scattering even in the resonance regime, the ray-tracing method, which gives the scattering in the geometrical-optics limit, is used. Specular resonance is explicitly defined as strong scattering in the direction of the specular reflection from the symmetrical axis of the bisphere whose intensity exceeds that of the scattering from noninteracting bispheres. Then the range of parameters for computing a particular specular resonance is specified. This resonance becomes prominent in a wide range of refractive indices (from 1.2 to 2.2) in a wide range of size parameters (from five to infinity) and for an arbitrarily polarized light incident within an angle of 40 degrees to the symmetrical axis. This particular scattering can stay evident even when the spheres are not in contact or the sizes of the spheres are different. Thus specular resonance is a common and robust phenomenon in dielectric bispheres. Furthermore, we demonstrate that various characteristic features in the scattering from bispheres can be explained successfully by using intuitive and simple representations. Most of the significant scatterings other than the specular resonance are also understandable as caustics in geometrical-optics theory. The specular resonance becomes striking at the smallest size parameter among these caustics because its optical trajectory is composed of only the refractions at the surfaces and has an exceptionally large intensity. However, some characteristics are not accounted for by geometrical optics. In particular, the oscillatory behaviors of their scattering intensity are well described by

  4. Neutron Resonance Theory for Nuclear Reactor Applications: Modern Theory and Practices.

    Energy Technology Data Exchange (ETDEWEB)

    Hwang, Richard N. [Argonne National Lab. (ANL), Argonne, IL (United States); Blomquist, Roger N. [Argonne National Lab. (ANL), Argonne, IL (United States); Leal, Luiz C. [Inst. de Radioprotection et de Sûrete Nucleaire (ISRN), Fontenay-aux-Roses (France); Yang, Won Sik [Purdue Univ., West Lafayette, IN (United States)

    2016-09-24

    The neutron resonance phenomena constitute one of the most fundamental subjects in nuclear physics as well as in reactor physics. It is the area where the concepts of nuclear interaction and the treatment of the neutronic balance in reactor fuel lattices become intertwined. The latter requires the detailed knowledge of resonance structures of many nuclides of practical interest to the development of nuclear energy. The most essential element in reactor physics is to provide an accurate account of the intricate balance between the neutrons produced by the fission process and neutrons lost due to the absorption process as well as those leaking out of the reactor system. The presence of resonance structures in many major nuclides obviously plays an important role in such processes. There has been a great deal of theoretical and practical interest in resonance reactions since Fermi’s discovery of resonance absorption of neutrons as they were slowed down in water. The resonance absorption became the center of attention when the question was raised as to the feasibility of the self-sustaining chain reaction in a natural uranium-fueled system. The threshold of the nuclear era was crossed almost eighty years ago when Fermi and Szilard observed that a substantial reduction in resonance absorption is possible if the uranium was made into the form of lumps instead of a homogeneous mixture with water. In the West, the first practical method for estimating the resonance escape probability in a reactor cell was pioneered by Wigner et al in early forties.

  5. Water and Stone: Contemporary Chinese Art and the Spirit Resonance of the World

    Directory of Open Access Journals (Sweden)

    Mary Bittner Wiseman

    2010-01-01

    Full Text Available My claim that the new art in China operates at the level of matter and gesture, below that of discourse, is twofold. First, much of the art that is being made exemplifies principles articulated by Hsieh Ho (fifth century and Shih Tao (seventeenth century and refracted through the changes wrought by Mao in 1949 and Deng in 1979. Through their art, experimental Chinese artists ask what can art be in a world turned upside down, and what can it be to be artist in such a world and, in particular, to be a Chinese artist. Second, in the course of working through these questions, the artists have resorted to an art that is an operation on matter, a matter inseparable from energy, and it is the artist’s activity, as much as what issues from it, that puts the artist in lockstep with the movement of the world of the twenty-first century.

  6. Resonance energy transfer: The unified theory via vector spherical harmonics

    Energy Technology Data Exchange (ETDEWEB)

    Grinter, Roger, E-mail: r.grinter@uea.ac.uk; Jones, Garth A., E-mail: garth.jones@uea.ac.uk [School of Chemistry, University of East Anglia, Norwich NR4 7TJ (United Kingdom)

    2016-08-21

    In this work, we derive the well-established expression for the quantum amplitude associated with the resonance energy transfer (RET) process between a pair of molecules that are beyond wavefunction overlap. The novelty of this work is that the field of the mediating photon is described in terms of a spherical wave rather than a plane wave. The angular components of the field are constructed in terms of vector spherical harmonics while Hankel functions are used to define the radial component. This approach alleviates the problem of having to select physically correct solution from non-physical solutions, which seems to be inherent in plane wave derivations. The spherical coordinate system allows one to easily decompose the photon’s fields into longitudinal and transverse components and offers a natural way to analyse near-, intermediate-, and far-zone RET within the context of the relative orientation of the transition dipole moments for the two molecules.

  7. Unraveling multi-spin effects in rotational resonance nuclear magnetic resonance using effective reduced density matrix theory

    International Nuclear Information System (INIS)

    SivaRanjan, Uppala; Ramachandran, Ramesh

    2014-01-01

    A quantum-mechanical model integrating the concepts of reduced density matrix and effective Hamiltonians is proposed to explain the multi-spin effects observed in rotational resonance (R 2 ) nuclear magnetic resonance (NMR) experiments. Employing this approach, the spin system of interest is described in a reduced subspace inclusive of its coupling to the surroundings. Through suitable model systems, the utility of our theory is demonstrated and verified with simulations emerging from both analytic and numerical methods. The analytic results presented in this article provide an accurate description/interpretation of R 2 experimental results and could serve as a test-bed for distinguishing coherent/incoherent effects in solid-state NMR

  8. Unraveling multi-spin effects in rotational resonance nuclear magnetic resonance using effective reduced density matrix theory

    Energy Technology Data Exchange (ETDEWEB)

    SivaRanjan, Uppala; Ramachandran, Ramesh, E-mail: rramesh@iisermohali.ac.in [Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli, P.O. Box-140306, Mohali, Punjab (India)

    2014-02-07

    A quantum-mechanical model integrating the concepts of reduced density matrix and effective Hamiltonians is proposed to explain the multi-spin effects observed in rotational resonance (R{sup 2}) nuclear magnetic resonance (NMR) experiments. Employing this approach, the spin system of interest is described in a reduced subspace inclusive of its coupling to the surroundings. Through suitable model systems, the utility of our theory is demonstrated and verified with simulations emerging from both analytic and numerical methods. The analytic results presented in this article provide an accurate description/interpretation of R{sup 2} experimental results and could serve as a test-bed for distinguishing coherent/incoherent effects in solid-state NMR.

  9. Theory, Instrumentation and Applications of Magnetoelastic Resonance Sensors: A Review

    Science.gov (United States)

    Grimes, Craig A.; Roy, Somnath C.; Rani, Sanju; Cai, Qingyun

    2011-01-01

    Thick-film magnetoelastic sensors vibrate mechanically in response to a time varying magnetic excitation field. The mechanical vibrations of the magnetostrictive magnetoelastic material launch, in turn, a magnetic field by which the sensor can be monitored. Magnetic field telemetry enables contact-less, remote-query operation that has enabled many practical uses of the sensor platform. This paper builds upon a review paper we published in Sensors in 2002 (Grimes, C.A.; et al. Sensors 2002, 2, 294–313), presenting a comprehensive review on the theory, operating principles, instrumentation and key applications of magnetoelastic sensing technology. PMID:22163768

  10. Theory, Instrumentation and Applications of Magnetoelastic Resonance Sensors: A Review

    Directory of Open Access Journals (Sweden)

    Craig A. Grimes

    2011-03-01

    Full Text Available Thick-film magnetoelastic sensors vibrate mechanically in response to a time varying magnetic excitation field. The mechanical vibrations of the magnetostrictive magnetoelastic material launch, in turn, a magnetic field by which the sensor can be monitored. Magnetic field telemetry enables contact-less, remote-query operation that has enabled many practical uses of the sensor platform. This paper builds upon a review paper we published in Sensors in 2002 (Grimes, C.A.; et al. Sensors 2002, 2, 294-313, presenting a comprehensive review on the theory, operating principles, instrumentation and key applications of magnetoelastic sensing technology.

  11. The width of the Δ-resonance at two loop order in baryon chiral perturbation theory

    Energy Technology Data Exchange (ETDEWEB)

    Gegelia, Jambul, E-mail: j.gegelia@fz-juelich.de [Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich (Germany); Tbilisi State University, 0186 Tbilisi, Georgia (United States); Meißner, Ulf-G., E-mail: meissner@hiskp.uni-bonn.de [Helmholtz Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn (Germany); Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich (Germany); Siemens, Dmitrij, E-mail: dmitrij.siemens@rub.de [Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum (Germany); Yao, De-Liang, E-mail: d.yao@fz-juelich.de [Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich (Germany)

    2016-12-10

    We calculate the width of the delta resonance at leading two-loop order in baryon chiral perturbation theory. This gives a correlation between the leading pion–nucleon–delta and pion–delta couplings, which is relevant for the analysis of pion–nucleon scattering and other processes.

  12. Fundamentals and approximations of multilevel resonance theory for reactor physics applications

    International Nuclear Information System (INIS)

    Moore, M.S.

    1980-01-01

    The formal theory of nuclear reactions leads to any of a number of alternative representations for describing resonance behavior. None of these is satisfactory for applications, and, depending on the problem to be addressed, approximate expressions are used. The specializations and approximations found to be most useful by evaluators are derived from R-matrix theory and are discussed from the viewpoint of convenience in numerical calculations. Finally, we illustrate the application of the theory by reviewing a particular example: the spin-separated neutron-induced cross sections of 235 U in the resolved and unresolved resonance regions and the use of these results in the U.S. evaluated nuclear data file ENDF/B. (author)

  13. [The theory of order from poinsot to Bourgoin: Mathematics, philosophy, ornemental art].

    Science.gov (United States)

    Boucard, Jenny; Eckes, Christophe

    2015-12-01

    The aim of this paper is to understand the dynamics of the theory of order in the nineteenth century and to reveal a specific approach to mathematics, science, philosophy and decorative art in which order plays a prominent role. We will analyze the singular meaning that Poinsot assigns to the notion of order in the mathematical sciences, before describing the circulation of his writings on the order in the nineteenth century. Poinsot is one of the main sources of Cournot, who places the notions of order and form as the basis of his knowledge system. Then we will study the writings of Bourgoin who develops a combinatorics of ornaments based on the categories of order and form.

  14. Theory and state-of-the-art technology of software reliability

    International Nuclear Information System (INIS)

    Suzudo, Tomoaki; Watanabe, Norio

    1999-11-01

    Since FY 1997 , the Japan Atomic Energy Research Institute has been conducting a project , Study on Reliability of Digital I and C Systems. As part of the project , the methodologies and tools to improve software reliability were reviewed in order to examine the theory and the state-of-the-art technology in this field. It is surmised, as results from the review, that computerized software design and implementation tool (CASE tool), algebraic analysis to ensure the consistency between software requirement framework and its detailed design specification, and efficient test method using the internal information of the software (white-box test) at the validation phase just before the completion of the development will play a key role to enhance software reliability in the future. (author)

  15. Resonant modal group theory of membrane-type acoustical metamaterials for low-frequency sound attenuation

    Science.gov (United States)

    Ma, Fuyin; Wu, Jiu Hui; Huang, Meng

    2015-09-01

    In order to overcome the influence of the structural resonance on the continuous structures and obtain a lightweight thin-layer structure which can effectively isolate the low-frequency noises, an elastic membrane structure was proposed. In the low-frequency range below 500 Hz, the sound transmission loss (STL) of this membrane type structure is greatly higher than that of the current sound insulation material EVA (ethylene-vinyl acetate copo) of vehicle, so it is possible to replace the EVA by the membrane-type metamaterial structure in practice engineering. Based on the band structure, modal shapes, as well as the sound transmission simulation, the sound insulation mechanism of the designed membrane-type acoustic metamaterials was analyzed from a new perspective, which had been validated experimentally. It is suggested that in the frequency range above 200 Hz for this membrane-mass type structure, the sound insulation effect was principally not due to the low-level locally resonant mode of the mass block, but the continuous vertical resonant modes of the localized membrane. So based on such a physical property, a resonant modal group theory is initially proposed in this paper. In addition, the sound insulation mechanism of the membrane-type structure and thin plate structure were combined by the membrane/plate resonant theory.

  16. Gyrokinetic theory of perpendicular cyclotron resonance in a nonuniformly magnetized plasma

    International Nuclear Information System (INIS)

    Lashmore-Davies, C.N.; Dendy, R.O.

    1989-01-01

    The extension of gyrokinetic theory to arbitrary frequencies by Chen and Tsai [Phys. Fluids 26, 141 (1983); Plasma Phys. 25, 349 (1983)] is used to study cyclotron absorption in a straight magnetic field with a perpendicular, linear gradient in strength. The analysis includes the effects of magnetic field variation across the Larmor orbit and is restricted to propagation perpendicular to the field. It yields the following results for propagation into the field gradient. The standard optical depths for the fundamental O-mode and second harmonic X-mode resonances are obtained from the absorption profiles given in this paper, without invoking relativistic mass variation [see also Antonsen and Manheimer, Phys. Fluids 21, 2295 (1978)]. The compressional Alfven wave is shown to undergo perpendicular cyclotron damping at the fundamental minority resonance in a two-ion species plasma and at second harmonic resonance in a single-ion species plasma. Ion Bernstein waves propagating into the second harmonic resonance are no longer unattenuated, but are increasingly damped as they approach the resonance. It is shown how the kinetic power flow affects absorption profiles, yielding information previously obtainable only from full-wave theory. In all cases, the perpendicular cyclotron damping arises from the inclusion of magnetic field variation across the Larmor orbit

  17. The applicability of the Theory of Planned Behaviour in predicting adherence to ART among a South African sample.

    Science.gov (United States)

    Saal, Wylene; Kagee, Ashraf

    2012-04-01

    We sought to determine the extent to which the Theory of Planned Behaviour (TPB) was applicable in predicting medication adherence among South Africans receiving antiretroviral therapy (ART). Regression analyses revealed that the linear combination of attitudes towards adherence, perceived behavioural control and perceived group norms explained 12 percent of the variance in intentions to adhere to ART. We also found a non-significant relationship between intentions to adhere to treatment and self-reported adherence. The results call into question the extent to which TPB is helpful in understanding a health-promoting behaviour such as medication adherence among South Africans receiving ART.

  18. Magnetic resonance cholangiopancreatography. The fine art of bilio-pancreatic imaging.

    Science.gov (United States)

    Adamek, H E; Breer, H; Layer, G; Riemann, J F

    2002-01-01

    With the introduction of endoscopic retrograde cholangio-pancreatography in the early 1970s, gastroenterologists have a lot of diagnostic options in the biliopancreatic system to their disposal. Meanwhile, magnetic resonance cholangiopancreatography (MRCP) has become a competitive replacement for diagnostic ERCP with the advantage of avoiding complications related to endoscopic techniques. Mounting evidence suggests that both MRCP and MRI (magnetic resonance imaging) have a profound influence of diagnostic algorithms in a variety of hepatobiliary and pancreatic diseases. Copyright 2002 S. Karger AG, Basel and IAP

  19. From Rupture to Resonance: Uncertainty and Scholarship in Fine Art Research Degrees

    Science.gov (United States)

    Simmons, Beverley; Holbrook, Allyson

    2013-01-01

    This article focuses on the phenomenon of "rupture" identified in student narratives of uncertainty and scholarship experienced during the course of Fine Art research degrees in two Australian universities. Rupture captures the phenomenon of severe disruption or discontinuity in existing knowledge and typically signifies epistemological…

  20. Principles of nuclear magnetic resonance (NMR) - current state of the art

    International Nuclear Information System (INIS)

    Lerski, R.A.

    1985-01-01

    Nuclear magnetic resonance (NMR) imaging has progressed rapidly from laboratory curiosity to commercial exploitation and clinical application in the space of only three years. The physical principles underlying the technique are described and the equipment requirements outlined. The question of optimal magnetic field strength is discussed. (author)

  1. Generation of abstract geometric art based on exact aesthetics, gestalt theory and graphic design principles

    NARCIS (Netherlands)

    M.W. Kauw-A-Tjoe

    2005-01-01

    textabstractIn this thesis artificial intelligence ideas are applied to the domain of fine arts and especially modern art. First, we take a closer look at avant garde art movements of the late 19th and first half of the 20th century. After that, we make an analysis of the knowledge on which this art

  2. Reconceptualizing the Role of Creativity in Art Education Theory and Practice

    Science.gov (United States)

    Zimmerman, Enid

    2009-01-01

    Reconceptualizing contemporary notions about creativity in visual arts education should be an important issue in art education today. Currently, creativity may not be a primary focus at National Art Education Association conferences or in its publications. There are recent indications that art education is a site where creativity can be developed…

  3. Vygotsky's Stage Theory: The Psychology of Art and the Actor under the Direction of "Perezhivanie"

    Science.gov (United States)

    Smagorinsky, Peter

    2011-01-01

    This article reviews Vygotsky's writings on arts (particularly logocentric art including the theater) and emotions, drawing on his initial exploration in "The Psychology of Art" and his final considerations set forth in a set of essays, treatises, and lectures produced in the last years of his life. The review of "The Psychology of Art" includes…

  4. An overview of the current status of resonance theory in reactor physics applications

    International Nuclear Information System (INIS)

    Hwang, R.N.

    1993-01-01

    The neutron resonance phenomena constitute one of the most fundamental subjects in nuclear physics as well as in reactor physics. It is the area where the concepts of nuclear interaction and the treatment of the neutronic balance in reactor lattices become intertwined. The later requires the detailed knowledge of resonance structures of many nuclide of practical interest to the development of nuclear energy. The key issue of the resonance treatment in reactor applications is directly associated with the use of the microscopic cross sections in the macroscopic reactor cells with a wide range of composition, temperature,and geometric configurations. It gives rise to the so called self-shielding effect. The accurate estimations of such a effect is essential not only in the calculation of the criticality of a reactor but also from the point of view of safety considerations. The latter manifests through the Doppler effect particularly crucial to the fast reactor development. The task of accurate treatment of the self-shielding effect, however, is by no means simple. In fact, it is perhaps the most complicated problem in neutron physics which, strictly speaking, requires the dependence of many physical variables. Two important elements of particular interest are : (1) a concise description of the resonance cross sections as a function of energy and temperature; (2) accurate estimation of the corresponding neutron flux where appropriate. These topics will be discussed from both the historical as well as the state-of-art perspectives

  5. Properties and applications of HTS-shielded dielectric resonators: A state-of-the-art report

    International Nuclear Information System (INIS)

    Klein, N.; Scholen, A.; Tellmann, N.; Zuccaro, C.; Urban, K.W.

    1996-01-01

    High temperature superconductor (HTS) shielded dielectric resonators (DRs) have demonstrated to provide quality factors Q between 5 x 10 5 and several 10 6 at frequencies up to 20 GHz and levels of dissipated rf power in the range of Watts. As dielectric materials, high purity single crystals of sapphire, LaAlO 3 , and rutile exhibit sufficiently low microwave losses. There are two main areas of application which are considered to benefit from HTS-shielded DRs, namely low-phase-noise oscillators for radar systems and digital communication, and high-power filters for satellite communication. Projections for phase noise are -145 dBc/Hz at 1 kHz offset from the carrier frequency, a value of -110 dBc/Hz at 1 kHz was measured recently for an oscillator with a carrier frequency of 5.6 GHz. Modeling of filters based on resonators with Qs in the 10 6 range indicates their ability to reduce the rf power dissipation apparent in the output multiplexers of communication satellite payloads. Presently, schemes for resonator coupling and tuning while maintaining high Qs are under development

  6. Lithofacies identification using multiple adaptive resonance theory neural networks and group decision expert system

    Science.gov (United States)

    Chang, H.-C.; Kopaska-Merkel, D. C.; Chen, H.-C.; Rocky, Durrans S.

    2000-01-01

    Lithofacies identification supplies qualitative information about rocks. Lithofacies represent rock textures and are important components of hydrocarbon reservoir description. Traditional techniques of lithofacies identification from core data are costly and different geologists may provide different interpretations. In this paper, we present a low-cost intelligent system consisting of three adaptive resonance theory neural networks and a rule-based expert system to consistently and objectively identify lithofacies from well-log data. The input data are altered into different forms representing different perspectives of observation of lithofacies. Each form of input is processed by a different adaptive resonance theory neural network. Among these three adaptive resonance theory neural networks, one neural network processes the raw continuous data, another processes categorial data, and the third processes fuzzy-set data. Outputs from these three networks are then combined by the expert system using fuzzy inference to determine to which facies the input data should be assigned. Rules are prioritized to emphasize the importance of firing order. This new approach combines the learning ability of neural networks, the adaptability of fuzzy logic, and the expertise of geologists to infer facies of the rocks. This approach is applied to the Appleton Field, an oil field located in Escambia County, Alabama. The hybrid intelligence system predicts lithofacies identity from log data with 87.6% accuracy. This prediction is more accurate than those of single adaptive resonance theory networks, 79.3%, 68.0% and 66.0%, using raw, fuzzy-set, and categorical data, respectively, and by an error-backpropagation neural network, 57.3%. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.

  7. Sustainability, Participatory Culture, and the Performance of Democracy: Ascendant Sites of Theory and Practice in Art Education

    Science.gov (United States)

    Blandy, Doug

    2011-01-01

    Art education is a systemic and extensive network within which children, youth, and adults make and learn about material culture. This lecture considers three sites of theory and practice that I see as ascendant in circulating through this network. These sites are sustainability, participatory culture, and performing democracy. I argue that…

  8. Pion-nucleon scattering in covariant baryon chiral perturbation theory with explicit Delta resonances

    Energy Technology Data Exchange (ETDEWEB)

    Yao, De-Liang [Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics,Forschungszentrum Jülich, D-52425 Jülich (Germany); Siemens, D. [Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum (Germany); Bernard, V. [Groupe de Physique Théorique, Institut de Physique Nucléaire, UMR 8606,CNRS, University Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex (France); Epelbaum, E. [Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum (Germany); Gasparyan, A.M. [Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum (Germany); SSC RF ITEP, Bolshaya Cheremushkinskaya 25, 117218 Moscow (Russian Federation); Gegelia, J. [Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics,Forschungszentrum Jülich, D-52425 Jülich (Germany); Tbilisi State University, 0186 Tbilisi (Georgia); Krebs, H. [Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum (Germany); Meißner, Ulf-G. [Helmholtz Institut für Strahlen- und Kernphysik andBethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn (Germany); Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics,Forschungszentrum Jülich, D-52425 Jülich (Germany)

    2016-05-05

    We present the results of a third order calculation of the pion-nucleon scattering amplitude in a chiral effective field theory with pions, nucleons and delta resonances as explicit degrees of freedom. We work in a manifestly Lorentz invariant formulation of baryon chiral perturbation theory using dimensional regularization and the extended on-mass-shell renormalization scheme. In the delta resonance sector, the on mass-shell renormalization is realized as a complex-mass scheme. By fitting the low-energy constants of the effective Lagrangian to the S- and P-partial waves a satisfactory description of the phase shifts from the analysis of the Roy-Steiner equations is obtained. We predict the phase shifts for the D and F waves and compare them with the results of the analysis of the George Washington University group. The threshold parameters are calculated both in the delta-less and delta-full cases. Based on the determined low-energy constants, we discuss the pion-nucleon sigma term. Additionally, in order to determine the strangeness content of the nucleon, we calculate the octet baryon masses in the presence of decuplet resonances up to next-to-next-to-leading order in SU(3) baryon chiral perturbation theory. The octet baryon sigma terms are predicted as a byproduct of this calculation.

  9. A generalization of the Livolant-Jeanpierre theory for resonance absorption calculation

    International Nuclear Information System (INIS)

    Reuss, P.

    1985-04-01

    Because of the large number of heavy nuclide resonances a detailed neutron flux calculation in the epithermal range cannot be made by standard nuclear reactor codes: it would need several tens of thousand of energy points. However, by using pre-calculated effective reaction rates only a few tens of groups are sufficient for accurate spectrum and reaction rate calculations, if a consistent formalism is used. Such a formalism was elaborated in the 1970s by M. Livolant and F. Jeanpierre (L.-J.) for the ''one resonant nuclide - one resonant zone'' problem, and was implemented in the APOLLO code. In practical cases there are several resonant nuclides and often resonant zones of different characteristics, e.g. a lattice constituted with different kinds of pins, a lattice with irregular ''water-holes'', a fuel element with temperature (therefore Doppler effect) gradients,... Since these problem cannot be correctly treated by APOLLO, a generalization of the formalism was derived. The basic principles were retained, and our aim was to construct an algorithm which would not require too expensive calculations. After a brief recall of the L.-J. theory, equations for the most general case are presented, some approximations for practical calculations proposed, and numerical tests on significant examples commented

  10. The Arts in Education: An Introduction to Aesthetics, Theory and Pedagogy

    Science.gov (United States)

    Fleming, Mike

    2012-01-01

    Do the arts improve academic achievement? What does it mean to "teach" art? What should the balance of classic and pop be in the music curriculum? Should we encourage young children on the stage? How do we judge whether what a child produces is good? How do we justify the arts in the curriculum? What should be the balance between form and content…

  11. Resonance effects in elastic cross sections for electron scattering on pyrimidine: Experiment and theory.

    Science.gov (United States)

    Regeta, Khrystyna; Allan, Michael; Winstead, Carl; McKoy, Vincent; Mašín, Zdeněk; Gorfinkiel, Jimena D

    2016-01-14

    We measured differential cross sections for elastic (rotationally integrated) electron scattering on pyrimidine, both as a function of angle up to 180(∘) at electron energies of 1, 5, 10, and 20 eV and as a function of electron energy in the range 0.1-14 eV. The experimental results are compared to the results of the fixed-nuclei Schwinger variational and R-matrix theoretical methods, which reproduce satisfactorily the magnitudes and shapes of the experimental cross sections. The emphasis of the present work is on recording detailed excitation functions revealing resonances in the excitation process. Resonant structures are observed at 0.2, 0.7, and 4.35 eV and calculations for different symmetries confirm their assignment as the X̃(2)A2, Ã(2)B1, and B̃(2)B1 shape resonances. As a consequence of superposition of coherent resonant amplitudes with background scattering the B̃(2)B1 shape resonance appears as a peak, a dip, or a step function in the cross sections recorded as a function of energy at different scattering angles and this effect is satisfactorily reproduced by theory. The dip and peak contributions at different scattering angles partially compensate, making the resonance nearly invisible in the integral cross section. Vibrationally integrated cross sections were also measured at 1, 5, 10 and 20 eV and the question of whether the fixed-nuclei cross sections should be compared to vibrationally elastic or vibrationally integrated cross section is discussed.

  12. Generalized theory of resonance scattering (GTRS) using the translational addition theorem for spherical wave functions.

    Science.gov (United States)

    Mitri, Farid

    2014-11-01

    The generalized theory of resonance scattering (GTRS) by an elastic spherical target in acoustics is extended to describe the arbitrary scattering of a finite beam using the addition theorem for the spherical wave functions of the first kind under a translation of the coordinate origin. The advantage of the proposed method over the standard discrete spherical harmonics transform previously used in the GTRS formalism is the computation of the off-axial beam-shape coefficients (BSCs) stemming from a closed-form partial-wave series expansion representing the axial BSCs in spherical coordinates. With this general method, the arbitrary acoustical scattering can be evaluated for any particle shape and size, whether the particle is partially or completely illuminated by the incident beam. Numerical examples for the axial and off-axial resonance scattering from an elastic sphere placed arbitrarily in the field of a finite circular piston transducer with uniform vibration are provided. Moreover, the 3-D resonance directivity patterns illustrate the theory and reveal some properties of the scattering. Numerous applications involving the scattering phenomenon in imaging, particle manipulation, and the characterization of multiphase flows can benefit from the present analysis because all physically realizable beams radiate acoustical waves from finite transducers as opposed to waves of infinite extent.

  13. Teorizações dos docentes sobre a avaliação em Artes Plásticas Teorizaciones de los docentes sobre la evaluación en artes plásticas Teachers theories on art evaluation

    Directory of Open Access Journals (Sweden)

    Suzana Maria Ortiz dos Santos

    2004-12-01

    érie do Ensino Fundamental no Brasil. Este estudio se enmarca en un enfoque cualitativo con un diseño no experimental de tipo exploratorio. A través de las entrevistas con los docentes, la declaración del docente considerada "una acción mediada por la palabra", se han buscado las teorías implícitas a fin de convertir en explícitos los marcos de referencia del docente de Artes Plásticas y comprender como él percibe, piensa, teoriza y comprende sobre la evaluación en Artes Plásticas. El interés del investigador ha sido desafiar un campo poco revisado, que es el campo de la Psicología, del Arte y de la Didáctica, buscando el punto donde se interceptan lo psicológico, lo didáctico y lo artístico. El lugar de trabajo ha sido las escuelas públicas municipales de Rio de Janeiro. De las declaraciones obtenidas en esta investigación se llega a determinados resultados: los datos traen evidencias de que en la escuela la actividad de evaluar en Artes Plásticas consiste en la atribución de un juicio de valor a una realidad observada; en el proceso de evaluación en Artes Plásticas se busca una acción más reflexiva, "el evaluar" dentro de la propuesta de la evaluación diagnóstica y formativa; el conocimiento del profesor puede ser considerado un conocimiento lego, y también teorías pedagógicas personales (teorías implícitas, éstas no siempre percibidas por los profesores, sin embargo, juegan un papel importante en la organización del conocimiento del docente.The major goal of this text is to present a study on "Teachers Theories on Art Evaluation in order to fathom how an art professor appraises his 5th primary school students and his concernments on evaluation. This study was based on a qualitative focus exploratory non-experimental pattern. Through interviewing teachers, it was possible to know how an art teacher could understand and theorize on arts valuation. The main purpose was to challenge an unknown area which has been seldom reviewed and

  14. Tetraquark resonances computed with static lattice QCD potentials and scattering theory

    Directory of Open Access Journals (Sweden)

    Bicudo Pedro

    2018-01-01

    Full Text Available We study tetraquark resonances with lattice QCD potentials computed for two static quarks and two dynamical quarks, the Born-Oppenheimer approximation and the emergent wave method of scattering theory. As a proof of concept we focus on systems with isospin I = 0, but consider different relative angular momenta l of the heavy b quarks. We compute the phase shifts and search for S and T matrix poles in the second Riemann sheet. We predict a new tetraquark resonance for l = 1, decaying into two B mesons, with quantum numbers I(JP = 0(1−, mass m=10576−4+4 MeV and decay width Γ=112−103+90 MeV.

  15. A time-dependent density functional theory investigation of plasmon resonances of linear Au atomic chains

    International Nuclear Information System (INIS)

    Liu Dan-Dan; Zhang Hong

    2011-01-01

    We report theoretical studies on the plasmon resonances in linear Au atomic chains by using ab initio time-dependent density functional theory. The dipole responses are investigated each as a function of chain length. They converge into a single resonance in the longitudinal mode but split into two transverse modes. As the chain length increases, the longitudinal plasmon mode is redshifted in energy while the transverse modes shift in the opposite direction (blueshifts). In addition, the energy gap between the two transverse modes reduces with chain length increasing. We find that there are unique characteristics, different from those of other metallic chains. These characteristics are crucial to atomic-scale engineering of single-molecule sensing, optical spectroscopy, and so on. (condensed matter: electronic structure, electrical, magnetic, and optical properties)

  16. Cardiovascular magnetic resonance imaging in hypertrophic cardiomyopathy: Current state of the art.

    Science.gov (United States)

    Kamal, Muhammad Umar; Riaz, Irbaz Bin; Janardhanan, Rajesh

    2016-01-01

    Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiomyopathy with a prevalence of 1:500 (0.2%) in the general population. Sudden cardiac death (SCD) is the most feared presentation of HCM. Therefore, it is essential to identify individuals at high risk in order to prevent SCD. The absence of conventional risk factors does not nullify the risk of HCM related SCD. Although echocardiography is currently the most widely used imaging modality, cardiac magnetic resonance (CMR) allows detailed characterization of the HCM phenotype, which makes it possible to differentiate HCM from other causes of left ventricular hypertrophy. CMR has the potential to further refine risk stratification. Late gadolinium enhancement (LGE) on CMR is a high-risk feature and there is emerging data to suggest that the presence of LGE should be employed as a marker for major adverse outcomes such as SCD, arrhythmias, systolic and diastolic heart failure. Hence, LGE on CMR may be considered an additional risk factor for SCD in HCM patients and should be incorporated in decision-making for implant-able cardioverter defibrillator implantation to aid primary prevention. Novel markers such as the extent of myocardial fibrosis on CMR must be accounted for comprehensive risk stratifica-tion of HCM patients. The purpose of this review is to discuss the current status and emerging role of CMR in HCM.

  17. Whole-body magnetic resonance imaging in children: state of the art

    Directory of Open Access Journals (Sweden)

    Sara Reis Teixeira

    2015-04-01

    Full Text Available Whole-body imaging in children was classically performed with radiography, positron-emission tomography, either combined or not with computed tomography, the latter with the disadvantage of exposure to ionizing radiation. Whole-body magnetic resonance imaging (MRI, in association with the recently developed metabolic and functional techniques such as diffusion-weighted imaging, has brought the advantage of a comprehensive evaluation of pediatric patients without the risks inherent to ionizing radiation usually present in other conventional imaging methods. It is a rapid and sensitive method, particularly in pediatrics, for detecting and monitoring multifocal lesions in the body as a whole. In pediatrics, it is utilized for both oncologic and non-oncologic indications such as screening and diagnosis of tumors in patients with genetic syndromes, evaluation of disease extent and staging, evaluation of therapeutic response and post-therapy follow-up, evaluation of non neoplastic diseases such as multifocal osteomyelitis, vascular malformations and syndromes affecting multiple regions of the body. The present review was aimed at describing the major indications of whole-body MRI in pediatrics added of technical considerations.

  18. Theory and computation of triply excited resonances: Application to states of He-

    International Nuclear Information System (INIS)

    Nicolaides, C.A.; Piangos, N.A.; Komninos, Y.

    1993-01-01

    Autoionizing multiply excited states offer unusual challenges to the theory of electronic structure and spectra because of the presence of strong electron correlations, of their occasional weak binding, of their proximity to more than one threshold, and of their degeneracy with many continua. Here we discuss a theory that addresses these difficulties in conjunction with the computation of their wave functions and intrinsic properties. Emphasis is given on the justification of the possible presence of self-consistently obtained open-channel-like (OCL) correlating configurations in the square-integrable representation of such states and on their effect on the energy E and the width Γ. Application of the theory has allowed the prediction of two hitherto unknown He - triply excited resonances, the 2s2p 2 2 P (E=59.71 eV, above the He ground state, Γ=79 meV) and the 2p 3 2 Do (E=59.46 eV, Γ=282 meV) (1 a.u.=27.2116 eV). These resonances are above the singly excited states of He and are embedded in its doubly excited spectrum. The relatively broad 2p 3 2 Do state interacts strongly with the He 2s2p 3 Po εd continuum. The effect of this interaction has been studied in terms of the coupling with fixed core scattering states as well as with a self-consistently computed OCL bound configuration

  19. Theory of Electric-Field Effects on Electron-Spin-Resonance Hyperfine Couplings

    International Nuclear Information System (INIS)

    Karna, S.P.

    1997-01-01

    A quantum mechanical theory of the effects of a uniform electric field on electron-spin-resonance hyperfine couplings is presented. The electric-field effects are described in terms of perturbation coefficients which can be used to probe the local symmetry as well as the strength of the electric field at paramagnetic sites in a solid. Results are presented for the first-order perturbation coefficients describing the Bloembergen effect (linear electric-field effect on hyperfine coupling tensor) for the O atom and the OH radical. copyright 1997 The American Physical Society

  20. Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects

    OpenAIRE

    Braaten, Eric; Johnson, Evan; Zhang, Hong

    2018-01-01

    Near a critical value of the wino mass where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold, low-energy winos can be described by a zero-range effective field theory (ZREFT) in which the winos interact nonperturbatively through a contact interaction and through Coulomb interactions. The effects of wino-pair annihilation into electroweak gauge bosons are taken into account through the analytic continuation of the real parameters for the contact interaction to comple...

  1. Theory of resonant multiphoton ionization of krypton by intense ultraviolet laser radiation

    International Nuclear Information System (INIS)

    Tang, X.; Lambropoulos, P.; L'Huillier, A.; Dixit, S.N.

    1989-01-01

    We present a theoretical interpretation of the experimental results on three-photon-resonant four-photon ionization of Kr reported by Landen, Perry, and Campbell [Phys. Rev. Lett. 59, 2558 (1987)] and Perry and Landen [Phys. Rev. A 38, 2815 (1988)]. Our calculations are based on multichannel quantum-defect theory combined with a density-matrix formalism describing the spatiotemporal development of the process. We obtain good agreement with the data, which even at intensities as high as 10 14 W/cm 2 show the imprint of the underlying atomic structure

  2. Contribution to analytical theory of neutron resonance absorption in heterogeneous reactor systems with cylindrical geometry; Prilog analitickoj teoriji rezonzntne apsorpcije neutron u heterogenom reaktorskim sistemima sa cilindricnom geometrijom

    Energy Technology Data Exchange (ETDEWEB)

    Slipicevic, K [Institute of Nuclear Sciences Boris Kidric, Vinca, Beograd (Yugoslavia)

    1968-07-01

    Following a review of the existing theories od resonance absorption this thesis includes a new approach for calculating the effective resonance integral of absorbed neutrons, new approximate formula for the penetration factor, an analysis of the effective resonance integral and the correction of the resonance integral taking into account the interference of potential and resonance dissipation. A separate chapter is devoted to calculation of the effective resonance integral for the regular reactor lattice with cylindrical fuel elements.

  3. Motivating the Documentation of the Verbal Arts: Arguments from Theory and Practice

    Science.gov (United States)

    Fitzgerald, Colleen M.

    2017-01-01

    For language documentation to be sufficiently extensive to cover a given community's language practices (cf. Himmelmann 1998), then including verbal arts is essential to ensure the richness of that comprehensive record. The verbal arts span the creative and artistic uses of a given language by speakers, such as storytelling, songs, puns and…

  4. Organisational Art

    DEFF Research Database (Denmark)

    Ferro-Thomsen, Martin

    creation of a practical utopia (?heterotopia?) in the organisational context. The case study makes use of both art- and organisational theory. The thesis concludes with an outline of a framework for OA that is derived from contemporary theory of mainly Relational Aesthetics (Bourriaud), Conceptual Art......University of Copenhagen / Learning Lab Denmark. 2005 Kort beskrivelse: Organisational Art is a tentative title for an art form that works together with organisations to produce art. This is most often done together with non-artist members of the organisation and on-site in their social context. OA...... is characterised as socially engaged, conceptual, discursive, site-specific and contextual. Abstract: This investigation is about Organisational Art (OA), which is a tentative title for an art form that works together with organisations (companies, institutions, communities, governments and NGOs) to produce art...

  5. Resonance

    DEFF Research Database (Denmark)

    Petersen, Nils Holger

    2014-01-01

    A chapter in a book about terminology within the field of medievalism: the chapter discusses the resonance of medieval music and ritual in modern (classical) music culture and liturgical practice.......A chapter in a book about terminology within the field of medievalism: the chapter discusses the resonance of medieval music and ritual in modern (classical) music culture and liturgical practice....

  6. Joint Special Operations University SOF-Power Workshop: A Way Forward for Special Operations Theory and Strategic Art

    Science.gov (United States)

    2011-08-01

    participants‘ particular points of view and may be helpful in researching, developing, testing, and explaining theory. The Secret War in Laos was...Jan 1985. Tse -Tung, Mao. On Guerrilla Warfare. Praeger, New York: 1961. The Use and Utility of Force; Force Fungibles Art, Robert J. and...Penguin Books, New York: 1968. Griffith, Samuel B., (BrigGen (Ret) USMC). On Guerrilla Warfare – Mao Tse -Tung. Praeger, New York: 1961

  7. A Brush with Research: Teaching Grounded Theory in the Art and Design Classroom

    Science.gov (United States)

    Compton, Mike; Barrett, Sean

    2016-01-01

    Grounded Theory is a systematic approach to social research that allows for new concepts and theories to emerge from gathered data, as opposed to relying on either established theory or personal conjecture to interpret social processes. Although Grounded Theory is a well-known method within social science literature, it is relatively unknown in…

  8. Investigation of Size-Dependency in Free-Vibration of Micro-Resonators Based on the Strain Gradient Theory

    Directory of Open Access Journals (Sweden)

    R. Vatankhah

    Full Text Available Abstract This paper investigates the vibration behavior of micro-resonators based on the strain gradient theory, a non-classical continuum theory capable of capturing the size effect appearing in micro-scale structures. The micro-resonator is modeled as a clamped-clamped micro-beam with an attached mass subjected to an axial force. The governing equations of motion and both classical and non-classical sets of boundary conditions are developed based on the strain gradient theory. The normalized natural frequency of the micro-resonator is evaluated and the influences of various parameters are assessed. In addition, the current results are compared to those of the classical and modified couple stress continuum theories.

  9. Microanalysis of organic pigments and glazes in polychrome works of art by surface-enhanced resonance Raman scattering.

    Science.gov (United States)

    Leona, Marco

    2009-09-01

    Scientific studies of works of art are usually limited by severe sampling restrictions. The identification of organic colorants, a class of compounds relevant for attribution and provenance studies, is further complicated by the low concentrations at which these compounds are used and by the interference of the protein-, gum-, or oil-binding media present in pigment and glaze samples. Surface-enhanced resonance Raman scattering (SERRS) was successfully used to identify natural organic colorants in archaeological objects, polychrome sculptures, and paintings from samples smaller than 25 microm in diameter. The key factors in achieving the necessary sensitivity were a highly active stabilized silver colloid, obtained by the reproducible microwave-supported reduction of silver sulfate with glucose and sodium citrate, and a non-extractive hydrolysis sample treatment procedure that maximizes dye adsorption on the colloid. Among the examples presented are the earliest so far found occurrence of madder lake (in a 4,000 years old Egyptian object dating to the Middle Kingdom period), and the earliest known occurrence in Europe of the South Asian dyestuff lac (in the Morgan Madonna, a 12th century polychrome sculpture from Auvergne, France).

  10. Analytic Theory of Titans Schumann Resonance: Constraints on Ionospheric Conductivity and Buried Water Ocean

    Science.gov (United States)

    Beghin, Christian; Randriamboarison, Orelien; Hamelin, Michel; Karkoschka, Erich; Sotin, Christophe; Whitten, Robert C.; Berthelier, Jean-Jacques; Grard, Rejean; Simoes, Fernando

    2013-01-01

    This study presents an approximate model for the atypical Schumann resonance in Titan's atmosphere that accounts for the observations of electromagnetic waves and the measurements of atmospheric conductivity performed with the Huygens Atmospheric Structure and Permittivity, Wave and Altimetry (HASI-PWA) instrumentation during the descent of the Huygens Probe through Titan's atmosphere in January 2005. After many years of thorough analyses of the collected data, several arguments enable us to claim that the Extremely Low Frequency (ELF) wave observed at around 36 Hz displays all the characteristics of the second harmonic of a Schumann resonance. On Earth, this phenomenon is well known to be triggered by lightning activity. Given the lack of evidence of any thunderstorm activity on Titan, we proposed in early works a model based on an alternative powering mechanism involving the electric current sheets induced in Titan's ionosphere by the Saturn's magnetospheric plasma flow. The present study is a further step in improving the initial model and corroborating our preliminary assessments. We first develop an analytic theory of the guided modes that appear to be the most suitable for sustaining Schumann resonances in Titan's atmosphere. We then introduce the characteristics of the Huygens electric field measurements in the equations, in order to constrain the physical parameters of the resonating cavity. The latter is assumed to be made of different structures distributed between an upper boundary, presumably made of a succession of thin ionized layers of stratospheric aerosols spread up to 150 km and a lower quasi-perfect conductive surface hidden beneath the non-conductive ground. The inner reflecting boundary is proposed to be a buried water-ammonia ocean lying at a likely depth of 55-80 km below a dielectric icy crust. Such estimate is found to comply with models suggesting that the internal heat could be transferred upwards by thermal conduction of the crust, while

  11. Ultrasound imparted air-recoil resonance (UIAR) method for acoustic power estimation: theory and experiment.

    Science.gov (United States)

    Kaiplavil, Sreekumar; Rivens, Ian; ter Haar, Gail

    2013-07-01

    Ultrasound imparted air-recoil resonance (UIAR), a new method for acoustic power estimation, is introduced with emphasis on therapeutic high-intensity focused ultrasound (HIFU) monitoring applications. Advantages of this approach over existing practices include fast response; electrical and magnetic inertness, and hence MRI compatibility; portability; high damage threshold and immunity to vibration and interference; low cost; etc. The angle of incidence should be fixed for accurate measurement. However, the transducer-detector pair can be aligned in any direction with respect to the force of gravity. In this sense, the operation of the device is orientation independent. The acoustic response of a pneumatically coupled pair of Helmholtz resonators, with one of them acting as the sensor head, is used for the estimation of acoustic power. The principle is valid in the case of pulsed/ burst as well as continuous ultrasound exposure, the former being more sensitive and accurate. An electro-acoustic theory has been developed for describing the dynamics of pressure flow and resonance in the system considering various thermo- viscous loss mechanisms. Experimental observations are found to be in agreement with theoretical results. Assuming the window damage threshold (~10 J·mm(-2)) and accuracy of RF power estimation are the upper and lower scale-limiting factors, the performance of the device was examined for an RF power range of 5 mW to 100 W with a HIFU transducer operating at 1.70 MHz, and an average nonlinearity of ~1.5% was observed. The device is also sensitive to sub-milliwatt powers. The frequency response was analyzed at 0.85, 1.70, 2.55, and 3.40 MHz and the results are presented with respective theoretical estimates. Typical response time is in the millisecond regime. Output drift is about 3% for resonant and 5% for nonresonant modes. The principle has been optimized to demonstrate a general-purpose acoustic power meter.

  12. Biomechanical energy harvesting from human motion: theory, state of the art, design guidelines, and future directions.

    Science.gov (United States)

    Riemer, Raziel; Shapiro, Amir

    2011-04-26

    Biomechanical energy harvesting from human motion presents a promising clean alternative to electrical power supplied by batteries for portable electronic devices and for computerized and motorized prosthetics. We present the theory of energy harvesting from the human body and describe the amount of energy that can be harvested from body heat and from motions of various parts of the body during walking, such as heel strike; ankle, knee, hip, shoulder, and elbow joint motion; and center of mass vertical motion. We evaluated major motions performed during walking and identified the amount of work the body expends and the portion of recoverable energy. During walking, there are phases of the motion at the joints where muscles act as brakes and energy is lost to the surroundings. During those phases of motion, the required braking force or torque can be replaced by an electrical generator, allowing energy to be harvested at the cost of only minimal additional effort. The amount of energy that can be harvested was estimated experimentally and from literature data. Recommendations for future directions are made on the basis of our results in combination with a review of state-of-the-art biomechanical energy harvesting devices and energy conversion methods. For a device that uses center of mass motion, the maximum amount of energy that can be harvested is approximately 1 W per kilogram of device weight. For a person weighing 80 kg and walking at approximately 4 km/h, the power generation from the heel strike is approximately 2 W. For a joint-mounted device based on generative braking, the joints generating the most power are the knees (34 W) and the ankles (20 W). Our theoretical calculations align well with current device performance data. Our results suggest that the most energy can be harvested from the lower limb joints, but to do so efficiently, an innovative and light-weight mechanical design is needed. We also compared the option of carrying batteries to the

  13. Green’s function theory of ferromagnetic resonance in magnetic superlattices with damping

    International Nuclear Information System (INIS)

    Qiu, R.K.; Guo, F.F.; Zhang, Z.D.

    2016-01-01

    We explore a quantum Green’s-function method to study the resonance absorption of magnetic materials. The relationship between the resonance magnon (spin wave) density and the resonance frequency of a superlattice consisting of two magnetic layers with damping and antiferromagnetic interlayer exchange coupling is studied. The effects of temperature, interlayer coupling, anisotropy, external magnetic field and damping on the the resonance frequency and resonance magnon density are investigated. The resonance excitation probability for a magnon is proportional to the resonance magnon density. In the classic methods, the imaginary part of magnetic permeability represents the resonance absorption in magnetic materials. In the quantum approach, the resonance magnon density can be used to estimate the strength of the resonance absorption. In the present work, a quantum approach is developed to study resonance absorption of magnetic materials and the results show the method to obtain a magnetic multilayered materials with both high resonance frequency and high resonance absorption.

  14. Green’s function theory of ferromagnetic resonance in magnetic superlattices with damping

    Energy Technology Data Exchange (ETDEWEB)

    Qiu, R.K., E-mail: rkqiu@163.com [Shenyang University of Technology, Shenyang 110870 (China); Guo, F.F. [Shenyang University of Technology, Shenyang 110870 (China); Zhang, Z.D. [Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 (China)

    2016-02-01

    We explore a quantum Green’s-function method to study the resonance absorption of magnetic materials. The relationship between the resonance magnon (spin wave) density and the resonance frequency of a superlattice consisting of two magnetic layers with damping and antiferromagnetic interlayer exchange coupling is studied. The effects of temperature, interlayer coupling, anisotropy, external magnetic field and damping on the the resonance frequency and resonance magnon density are investigated. The resonance excitation probability for a magnon is proportional to the resonance magnon density. In the classic methods, the imaginary part of magnetic permeability represents the resonance absorption in magnetic materials. In the quantum approach, the resonance magnon density can be used to estimate the strength of the resonance absorption. In the present work, a quantum approach is developed to study resonance absorption of magnetic materials and the results show the method to obtain a magnetic multilayered materials with both high resonance frequency and high resonance absorption.

  15. Criteria for first- and second-order vibrational resonances and correct evaluation of the Darling-Dennison resonance coefficients using the canonical Van Vleck perturbation theory

    International Nuclear Information System (INIS)

    Krasnoshchekov, Sergey V.; Isayeva, Elena V.; Stepanov, Nikolay F.

    2014-01-01

    The second-order vibrational Hamiltonian of a semi-rigid polyatomic molecule when resonances are present can be reduced to a quasi-diagonal form using second-order vibrational perturbation theory. Obtaining exact vibrational energy levels requires subsequent numerical diagonalization of the Hamiltonian matrix including the first- and second-order resonance coupling coefficients. While the first-order Fermi resonance constants can be easily calculated, the evaluation of the second-order Darling-Dennison constants requires more complicated algebra for seven individual cases with different numbers of creation-annihilation vibrational quanta. The difficulty in precise evaluation of the Darling-Dennison coefficients is associated with the previously unrecognized interference with simultaneously present Fermi resonances that affect the form of the canonically transformed Hamiltonian. For the first time, we have presented the correct form of the general expression for the evaluation of the Darling-Dennison constants that accounts for the underlying effect of Fermi resonances. The physically meaningful criteria for selecting both Fermi and Darling-Dennison resonances are discussed and illustrated using numerical examples

  16. Applications of the Hybrid Theory to the Scattering of Electrons from HE+ and Li++ and Resonances in these Systems

    Science.gov (United States)

    Bhatia, Anand K.

    2008-01-01

    Applications of the hybrid theory to the scattering of electrons from Ile+ and Li++ and resonances in these systems, A. K. Bhatia, NASA/Goddard Space Flight Center- The Hybrid theory of electron-hydrogen elastic scattering [I] is applied to the S-wave scattering of electrons from He+ and Li++. In this method, both short-range and long-range correlations are included in the Schrodinger equation at the same time. Phase shifts obtained in this calculation have rigorous lower bounds to the exact phase shifts and they are compared with those obtained using the Feshbach projection operator formalism [2], the close-coupling approach [3], and Harris-Nesbet method [4]. The agreement among all the calculations is very good. These systems have doubly-excited or Feshbach resonances embedded in the continuum. The resonance parameters for the lowest ' S resonances in He and Li+ are calculated and they are compared with the results obtained using the Feshbach projection operator formalism [5,6]. It is concluded that accurate resonance parameters can be obtained by the present method, which has the advantage of including corrections due to neighboring resonances and the continuum in which these resonances are embedded.

  17. A unified theory of resonant excitation of kinetic ballooning modes by energetic ions/alpha particles in tokamaks

    International Nuclear Information System (INIS)

    Biglari, H.; Chen, L.

    1991-10-01

    A complete theory of wave-particle interactions is presented whereby both circulating and trapped energetic ions can destabilize kinetic ballooning modes in tokamaks. Four qualitatively different types of resonances, involving wave-precessional drift, wave-transit, wave-bounce, and precessional drift-bounce interactions, are identified, and the destabilization potential of each is assessed. For a characteristic slowing-down distribution function, the dominant interaction is that which taps those resonant ions with the highest energy. Implications of the theory for present and future generation fusion experiments are discussed. 16 refs

  18. Theory of triplet-triplet annihilation in optically detected magnetic resonance

    Science.gov (United States)

    Keevers, T. L.; McCamey, D. R.

    2016-01-01

    Triplet-triplet annihilation allows two low-energy photons to be upconverted into a single high-energy photon. By essentially engineering the solar spectrum, this allows solar cells to be made more efficient and even exceed the Shockley-Quiesser limit. Unfortunately, optimizing the reaction pathway is difficult, especially with limited access to the microscopic time scales and states involved in the process. Optical measurements can provide detailed information: triplet-triplet annihilation is intrinsically spin dependent and exhibits substantial magnetoluminescence in the presence of a static magnetic field. Pulsed optically detected magnetic resonance is especially suitable, since it combines high spin sensitivity with coherent manipulation. In this paper, we develop a time-domain theory of triplet-triplet annihilation for complexes with arbitrary spin-spin coupling. We identify unique "Rabi fingerprints" for each coupling regime and show that this can be used to characterize the microscopic Hamiltonian.

  19. Experimental test of resonant absorption theory. Final report, January 1, 1978-December 31, 1979

    International Nuclear Information System (INIS)

    Yablonovitch, E.

    1979-05-01

    This experimental research has probed the nature of resonant absorption (RA) of laser light by laser-produced plasmas. The plasmas were created by optical breakdown of a shockfront produced in an electrothermal shock tube. This procedure allows the density structure of the plasma, and in particular, the orientation of the plasma critical-density surface, to be reproducibly formed from one shot to the next. Thus, for the first time, RA has been controllably and reproducibly studied in isolation from other plasma physics. The angular distribution of fast electrons emitted by RA and wavebreaking has been studied, and it is observed that the emission is directed in a narrow cone centered on the shockfront density-gradient vector, in agreement with the theory of wavebreaking

  20. Coupled modes, frequencies and fields of a dielectric resonator and a cavity using coupled mode theory

    Science.gov (United States)

    Elnaggar, Sameh Y.; Tervo, Richard; Mattar, Saba M.

    2014-01-01

    Probes consisting of a dielectric resonator (DR) inserted in a cavity are important integral components of electron paramagnetic resonance (EPR) spectrometers because of their high signal-to-noise ratio. This article studies the behavior of this system, based on the coupling between its dielectric and cavity modes. Coupled-mode theory (CMT) is used to determine the frequencies and electromagnetic fields of this coupled system. General expressions for the frequencies and field distributions are derived for both the resulting symmetric and anti-symmetric modes. These expressions are applicable to a wide range of frequencies (from MHz to THz). The coupling of cavities and DRs of various sizes and their resonant frequencies are studied in detail. Since the DR is situated within the cavity then the coupling between them is strong. In some cases the coupling coefficient, κ, is found to be as high as 0.4 even though the frequency difference between the uncoupled modes is large. This is directly attributed to the strong overlap between the fields of the uncoupled DR and cavity modes. In most cases, this improves the signal to noise ratio of the spectrometer. When the DR and the cavity have the same frequency, the coupled electromagnetic fields are found to contain equal contributions from the fields of the two uncoupled modes. This situation is ideal for the excitation of the probe through an iris on the cavity wall. To verify and validate the results, finite element simulations are carried out. This is achieved by simulating the coupling between a cylindrical cavity's TE011 and the dielectric insert's TE01δ modes. Coupling between the modes of higher order is also investigated and discussed. Based on CMT, closed form expressions for the fields of the coupled system are proposed. These expressions are crucial in the analysis of the probe's performance.

  1. Backward wave oscillators with rippled wall resonators: Analytic theory and numerical simulation

    International Nuclear Information System (INIS)

    Swegle, J.A.; Poukey, J.W.

    1985-01-01

    The 3-D analytic theory is based on the approximation that the device is infinitely long. In the absence of an electron beam, the theory is exact and allows us to compute the dispersion characteristics of the cold structure. With the inclusion of a thin electron beam, we can compute the growth rates resulting from the interaction between a waveguide mode of the structure and the slower space charge wave on the beam. In the limit of low beam currents, the full dispersion relation based on an electromagnetic analysis can be placed in correspondence with the circuit theory of Pierce. Numerical simulations permit us to explore the saturated, large amplitude operating regime for TM axisymmetric modes. The scaling of operating frequency, peak power, and operating efficiency with beam and resonator parameters is examined. The analytic theory indicates that growth rates are largest for the TM 01 modes and decrease with both the radial and azimuthal mode numbers. Another interesting trend is that for a fixed cathode voltage and slow wave structure, growth rates peak for a beam current below the space charge limiting value and decrease for both larger and smaller currents. The simulations show waves that grow from noise without any input signal, so that the system functions as an oscillator. The TM 01 mode predominates in all simulations. While a minimum device length is required for the start of oscillations, it appears that if the slow wave structure is too long, output power is decreased by a transfer of wave energy back to the electrons. Comparisons have been made between the analytical and numerical results, as well as with experimental data obtained at Sandia National Laboratories

  2. Resonances

    DEFF Research Database (Denmark)

    an impetus or drive to that account: change, innovation, rupture, or discontinuity. Resonances: Historical Essays on Continuity and Change explores the historiographical question of the modes of interrelation between these motifs in historical narratives. The essays in the collection attempt to realize...

  3. The Application of Traditional Martial Arts Practice and Theory to the Treatment of Violent Adolescents.

    Science.gov (United States)

    Twemlow, Stuart W.; Sacco, Frank C.

    1998-01-01

    Reviews treatment programs, the complex problems posed by youth gangs, and the use of martial arts in the treatment of violence and proposes a program for violent adolescents. The program philosophy is committed to respect and self-control; emphasis is on leadership and community service. Provides clinical examples. (Author/EMK)

  4. Examining English Language Arts Common Core State Standards Instruction through Cultural Historical Activity Theory

    Science.gov (United States)

    Barrett-Tatum, Jennifer

    2015-01-01

    The English Language Arts Common Core State Standards and corresponding assessments brought about many changes for educators, their literacy instruction, and the literacy learning of their students. This study examined the day-to-day literacy instruction of two primary grade teachers during their first year of full CCSS implementation. Engestr?m's…

  5. Music, Dance and the Total Art Work: Choreomusicology in Theory and Practice

    Science.gov (United States)

    Mason, Paul H.

    2012-01-01

    Euro-American performance arts are exceptional among the world's cultures in that music and dance are separable and constitute independent disciplines. In the late-nineteenth and early-twentieth centuries, a distinct consciousness emerged that demonstrated an awareness of the varying and protean relationships that music and dance can share. While…

  6. Theory of peak coalescence in Fourier transform ion cyclotron resonance mass spectrometry.

    Science.gov (United States)

    Boldin, Ivan A; Nikolaev, Eugene N

    2009-10-01

    Peak coalescence, i.e. the merging of two close peaks in a Fourier transform ion cyclotron resonance (FTICR) mass spectrum at a high number of ions, plays an important role in various FTICR experiments. In order to describe the coalescence phenomenon we would like to propose a new theory of motion for ion clouds with close mass-to-charge ratios, driven by a uniform magnetic field and Coulomb interactions between the clouds. We describe the motion of the ion clouds in terms of their averaged drift motion in crossed magnetic and electric fields. The ion clouds are considered to be of constant size and their motion is studied in two dimensions. The theory deals with the first-order approximation of the equations of motion in relation to dm/m, where dm is the mass difference and m is the mass of a single ion. The analysis was done for an arbitrary inter-cloud interaction potential, which makes it possible to analyze finite-size ion clouds of any shape. The final analytical expression for the condition of the onset of coalescence is found for the case of uniformly charged spheres. An algorithm for finding this condition for an arbitrary interaction potential is proposed. The critical number of ions for the peak coalescence to take place is shown to depend quadratically on the magnetic field strength and to be proportional to the cyclotron radius and inversely proportional to the ion masses. Copyright (c) 2009 John Wiley & Sons, Ltd.

  7. Characterizing water fingering phenomena in soils using magnetic resonance imaging and multifractal theory

    Directory of Open Access Journals (Sweden)

    A. Posadas

    2009-02-01

    Full Text Available The study of water movement in soils is of fundamental importance in hydrologic science. It is generally accepted that in most soils, water and solutes flow through unsaturated zones via preferential paths or fingers. This paper combines magnetic resonance imaging (MRI with both fractal and multifractal theory to characterize preferential flow in three dimensions. A cubic double-layer column filled with fine and coarse textured sand was placed into a 500 gauss MRI system. Water infiltration through the column (0.15×0.15×0.15 m3 was recorded in steady state conditions. Twelve sections with a voxel volume of 0.1×0.1×10 mm3 each were obtained and characterized using fractal and multifractal theory. The MRI system provided a detailed description of the preferential flow under steady state conditions and was also useful in understanding the dynamics of the formation of the fingers. The f(α multifractal spectrum was very sensitive to the variation encountered at each horizontally-oriented slice of the column and provided a suitable characterization of the dynamics of the process identifying four spatial domains. In conclusion, MRI and fractal and multifractal analysis were able to characterize and describe the preferential flow process in soils. Used together, the two methods provide a good alternative to study flow transport phenomena in soils and in porous media.

  8. Critical Arts

    African Journals Online (AJOL)

    both formal and informal) in culture and social theory. CRITICAL ARTS aims to challenge and ... Book Review: Brian McNair, An Introduction to Political Communication (3rd edition), London: Routledge, 2003, ISBN 0415307082, 272pp. Phil Joffe ...

  9. Study of squeeze film damping in a micro-beam resonator based on micro-polar theory

    Directory of Open Access Journals (Sweden)

    Mina Ghanbari

    Full Text Available In this paper, squeeze film damping in a micro-beam resonator based on micro-polar theory has been investigated. The proposed model for this study consists of a clamped-clamped micro-beam bounded between two fixed layers. The gap between the micro-beam and layers is filled with air. As fluid behaves differently in micro scale than macro, the micro-scale fluid field in the gap has been modeled based on micro-polar theory. Equation of motion governing transverse deflection of the micro- beam based on modified couple stress theory and also non-linear Reynolds equation of the fluid field based on micropolar theory have been non-dimensionalized, linearized and solved simultaneously in order to calculate the quality factor of the resonator. The effect of micropolar parameters of air on the quality factor has been investigated. The quality factor of the of the micro-beam resonator for different values of non-dimensionalized length scale of the beam, squeeze number and also non-dimensionalized pressure has been calculated and compared to the obtained values of quality factor based on classical theory.

  10. RESONANCE

    Indian Academy of Sciences (India)

    Teaching and Learning 'Genetics with Drosophila. 3. Pattern of Inheritance of Autosome and Sex . Chromosome Linked Genes/Characters. Phenotypic characters or traits are determined by genes, and genes are physically located on different chromosomes. This is the basic tenet of the chromosomal theory of inheritance.

  11. Gamified Pedagogy: From Gaming Theory to Creating a Self-Motivated Learning Environment in Studio Art

    Science.gov (United States)

    Han, Hsiao-Cheng

    2015-01-01

    This research is an empirical study using gamified pedagogy in a 3-D animation course in a Visual Communication Design Department. By conducting this research, I hope to increase student interest in learning 3-D animation and to decrease student fears of learning professional 3-D software. Through this research, I have developed a theory of…

  12. The Spiral and the Lattice: Changes in Cognitive Learning Theory with Implications for Art Education.

    Science.gov (United States)

    Efland, Arthur D.

    1995-01-01

    Contrasts recent views of learning and cognition with cognitive learning theories of the late 1950s and early 1960s. Maintains that Jerome Bruner's spiral curriculum approach, still valuable, is not sufficient to explain cognitive development. Proposes a lattice-like cognitive development structure, inviting differing paths of exploration. (CFR)

  13. Theory and experimental verifications of the resonator Q and equivalent electrical parameters due to viscoelastic and mounting supports losses.

    Science.gov (United States)

    Yong, Yook-Kong; Patel, Mihir S; Tanaka, Masako

    2010-08-01

    A novel analytical/numerical method for calculating the resonator Q and its equivalent electrical parameters due to viscoelastic, conductivity, and mounting supports losses is presented. The method presented will be quite useful for designing new resonators and reducing the time and costs of prototyping. There was also a necessity for better and more realistic modeling of the resonators because of miniaturization and the rapid advances in the frequency ranges of telecommunication. We present new 3-D finite elements models of quartz resonators with viscoelasticity, conductivity, and mounting support losses. The losses at the mounting supports were modeled by perfectly matched layers (PMLs). A previously published theory for dissipative anisotropic piezoelectric solids was formulated in a weak form for finite element (FE) applications. PMLs were placed at the base of the mounting supports to simulate the energy losses to a semi-infinite base substrate. FE simulations were carried out for free vibrations and forced vibrations of quartz tuning fork and AT-cut resonators. Results for quartz tuning fork and thickness shear AT-cut resonators were presented and compared with experimental data. Results for the resonator Q and the equivalent electrical parameters were compared with their measured values. Good equivalences were found. Results for both low- and high-Q AT-cut quartz resonators compared well with their experimental values. A method for estimating the Q directly from the frequency spectrum obtained for free vibrations was also presented. An important determinant of the quality factor Q of a quartz resonator is the loss of energy from the electrode area to the base via the mountings. The acoustical characteristics of the plate resonator are changed when the plate is mounted onto a base substrate. The base affects the frequency spectra of the plate resonator. A resonator with a high Q may not have a similarly high Q when mounted on a base. Hence, the base is an

  14. Dynamic spin susceptibility of superconducting cuprates: a microscopic theory of the magnetic resonance mode

    International Nuclear Information System (INIS)

    Vladimirov, A.A.; Plakida, N.M.; Ihle, D.

    2010-01-01

    A microscopic theory of the dynamic spin susceptibility (DSS) in the superconducting state within the t-J model is presented. It is based on an exact representation for the DSS obtained by applying the Mori-type projection technique for the relaxation function in terms of Hubbard operators. The static spin susceptibility is evaluated by a sum-rule-conserving generalized mean-field approximation, while the self-energy is calculated in the mode-coupling approximation. The spectrum of spin excitations is studied in the underdoped and optimally doped regions. The DSS reveals a resonance mode (RM) at the antiferromagnetic wave vector Q=π(1,1) at low temperatures due to a strong suppression of the damping of spin excitations. This is explained by an involvement of spin excitations in the decay process besides the particle-hole continuum usually considered in random-phase-type approximations. The spin gap in the spin-excitation spectrum at Q plays a dominant role in limiting the decay in comparison with the superconducting gap which results in the observation of the RM even above T c in the underdoped region. A good agreement with inelastic neutron-scattering experiments on the RM in YBCO compounds is found

  15. A Study of ρ-ω Mixing in Resonance Chiral Theory

    Science.gov (United States)

    Chen, Yun-Hua; Yao, De-Liang; Zheng, Han-Qing

    2018-01-01

    The strong and electromagnetic corrections to ρ-ω mixing are calculated using an SU(2) version of resonance chiral theory up to next-to-leading orders in 1/{N}C expansion, respectively. Up to our accuracy, the effect of the momentum dependence of ρ-ω mixing is incorporated due to the inclusion of loop contributions. We analyze the impact of ρ-ω mixing on the pion vector form factor by performing numerical fit to the data extracted from {e}+{e}-\\to {π }+{π }- and τ \\to {ν }τ 2π , while the decay width of ω \\to {π }+{π }- is taken into account as a constraint. It is found that the momentum dependence is significant in a good description of the experimental data. In addition, based on the fitted values of the involved parameters, we analyze the decay width of ω \\to {π }+{π }-, which turns out to be highly dominated by the ρ-ω mixing effect. Supported in part by the Fundamental Research Funds for the Central Universities under Grant No. 06500077, the Spanish Ministerio de Economía y Competitividad and the European Regional Development Fund, under Grant Nos. FIS2014-51948-C2-1-P, FIS2014-51948-C2-2-P, SEV-2014-0398, and Generalitat Valenciana under Grant No. PROMETEOII/2014/0068

  16. Theory-restricted resonant x-ray reflectometry of quantum materials

    Science.gov (United States)

    Fürsich, Katrin; Zabolotnyy, Volodymyr B.; Schierle, Enrico; Dudy, Lenart; Kirilmaz, Ozan; Sing, Michael; Claessen, Ralph; Green, Robert J.; Haverkort, Maurits W.; Hinkov, Vladimir

    2018-04-01

    The delicate interplay of competing phases in quantum materials is dominated by parameters such as the crystal field potential, the spin-orbit coupling, and, in particular, the electronic correlation strength. Whereas small quantitative variations of the parameter values can thus qualitatively change the material, these values can hitherto hardly be obtained with reasonable precision, be it theoretically or experimentally. Here we propose a solution combining resonant x-ray reflectivity (RXR) with multiplet ligand field theory (MLFT). We first perform ab initio DFT calculations within the MLFT framework to get initial parameter values, which we then use in a fit of the theoretical model to RXR. To validate our method, we apply it to NiO and SrTiO3 and obtain parameter values, which are amended by as much as 20 % compared to the ab initio results. Our approach is particularly useful to investigate topologically trivial and nontrivial correlated insulators, staggered moments in magnetically or orbitally ordered materials, and reconstructed interfaces.

  17. Media Art

    DEFF Research Database (Denmark)

    Ekman, Ulrik

    2015-01-01

    environments, experience time, and develop identities individually and socially. Interviews with working media artists lend further perspectives on these cultural transformations. Drawing on cultural theory, new media art studies, human-computer interaction theory, and software studies, this cutting-edge book...... critically unpacks the complex ubiquity-effects confronting us every day....

  18. Theory of error for target factor analysis with applications to mass spectrometry and nuclear magnetic resonance spectrometry

    International Nuclear Information System (INIS)

    Malinowski, E.R.

    1978-01-01

    Based on the theory of error for abstract factor analysis described earlier, a theory of error for target factor analysis is developed. The theory shows how the error in the data matrix mixes with the error in the target test vector. The apparent error in a target test is found to be a vector sum of the real error in the target vector and the real error in the predicted vector. The theory predicts the magnitudes of these errors without requiring any a priori knowledge of the error in the data matrix or the target vector. A reliability function and a spoil function are developed for the purpose of assessing the validity and the worthiness of a target vector. Examples from model data, mass spectrometry and nuclear magnetic resonance spectrometry are presented. (Auth.)

  19. Theory of the effect of odd-photon destructive interference on optical shifts in resonantly enhanced multiphoton excitation and ionization

    International Nuclear Information System (INIS)

    Payne, M.G.; Deng, L.; Garrett, W.R.

    1998-01-01

    We present a theory for two- and three-photon excitation, optical shifting, and four-wave mixing when a first laser is tuned onto, or near, a two-photon resonance and a second much more intense laser is tuned near or on resonance between the two-photon resonance and a second excited state. When the second excited state has a dipole-allowed transition back to the ground state and the concentration is sufficiently high, a destructive interference is produced between three-photon coupling of the ground state and the second excited state and one-photon coupling between the same states by the internally generated four-wave mixing field. This interference leads to several striking effects. For instance, as the onset of the interference occurs, the optical shifts in the two-photon resonance excitation line shape become smaller in copropagating geometry so that the line shapes for multiphoton ionization enhanced by the two-photon resonance eventually become unaffected by the second laser. In the same range of concentrations the four-wave mixing field evolves to a concentration-independent intensity. With counterpropagating laser beams the line shape exhibits normal optical shifts like those observed for both copropagating and counterpropagating laser beams at very low concentrations. The theoretical work presented here extends our earlier works by including the effect of laser bandwidth and by removing the restriction of having the second laser be tuned far from three-photon resonance. In this way we have now included, as a special case, the effect of both laser bandwidth and interference on laser-induced transparency. Unlike other effects related to odd-photon destructive interference, the effect of a broad bandwidth is to bring about the predicted effects at much lower concentrations. Studies in rubidium show good agreement between theory and experiment for both ionization line shapes and four-wave mixing intensity as a function of concentration. copyright 1998 The

  20. Application of semiclassical and geometrical optics theories to resonant modes of a coated sphere.

    Science.gov (United States)

    Bambino, Túlio M; Breitschaft, Ana Maria S; Barbosa, Valmar C; Guimarães, Luiz G

    2003-03-01

    This work deals with some aspects of the resonant scattering of electromagnetic waves by a metallic sphere covered by a dielectric layer, in the weak-absorption approximation. We carry out a geometrical optics treatment of the scattering and develop semiclassical formulas to determine the positions and widths of the system resonances. In addition, we show that the mean lifetime of broad resonances is strongly dependent on the polarization of the incident light.

  1. Parton Theory of Magnetic Polarons: Mesonic Resonances and Signatures in Dynamics

    Science.gov (United States)

    Grusdt, F.; Kánasz-Nagy, M.; Bohrdt, A.; Chiu, C. S.; Ji, G.; Greiner, M.; Greif, D.; Demler, E.

    2018-01-01

    When a mobile hole is moving in an antiferromagnet it distorts the surrounding Néel order and forms a magnetic polaron. Such interplay between hole motion and antiferromagnetism is believed to be at the heart of high-temperature superconductivity in cuprates. In this article, we study a single hole described by the t -Jz model with Ising interactions between the spins in two dimensions. This situation can be experimentally realized in quantum gas microscopes with Mott insulators of Rydberg-dressed bosons or fermions, or using polar molecules. We work at strong couplings, where hole hopping is much larger than couplings between the spins. In this regime we find strong theoretical evidence that magnetic polarons can be understood as bound states of two partons, a spinon and a holon carrying spin and charge quantum numbers, respectively. Starting from first principles, we introduce a microscopic parton description which is benchmarked by comparison with results from advanced numerical simulations. Using this parton theory, we predict a series of excited states that are invisible in the spectral function and correspond to rotational excitations of the spinon-holon pair. This is reminiscent of mesonic resonances observed in high-energy physics, which can be understood as rotating quark-antiquark pairs carrying orbital angular momentum. Moreover, we apply the strong-coupling parton theory to study far-from-equilibrium dynamics of magnetic polarons observable in current experiments with ultracold atoms. Our work supports earlier ideas that partons in a confining phase of matter represent a useful paradigm in condensed-matter physics and in the context of high-temperature superconductivity in particular. While direct observations of spinons and holons in real space are impossible in traditional solid-state experiments, quantum gas microscopes provide a new experimental toolbox. We show that, using this platform, direct observations of partons in and out of equilibrium are

  2. The Theory and Art of Child Psychotherapy: A Corrective Developmental Approach.

    Science.gov (United States)

    Friedman, Robert

    2017-10-01

    The history of child psychotherapy is sketched from the psychoanalytic pioneers Anna Freud and Melanie Klein to the popular "nondirective" approach of Virginia Axline. The author's approach to child psychotherapy, based on contemporary psychoanalytic theories, allows the therapist to play any parental role that helps to repair developmental deficiencies and conflicts. These include nurturing, supporting, mirroring, role modeling, challenging, and limit setting. Following Winnicott, psychotherapy is conceived as a play space in which therapist and child are both spontaneous. The value of interpretation and insight in child therapy is discussed. There follows a more detailed discussion of three major problem areas in child psychotherapy: handling anger and hostile aggression; handling issues related to sexuality; and handling narcissistic issues of inferiority and shame.

  3. Hepatocellular adenoma: findings at state-of-the-art magnetic resonance imaging, ultrasound, computed tomography and pathologic analysis

    International Nuclear Information System (INIS)

    Hussain, Shahid M.; Bos, Indra C. van den; Dwarkasing, Roy S.; Kuiper, Jan-Willem; Hollander, Jan den

    2006-01-01

    The purpose of this paper is to describe the most recent concepts and pertinent findings of hepatocellular adenomas, including clinical presentation, gross pathology and histology, pathogenesis and transformation into hepatocellular carcinoma (HCC), and imaging findings at ultrasound (US), computed tomography (CT), and magnetic resonance (MR) imaging. (orig.)

  4. a Radical Collaborative Approach: Developing a Model for Learning Theory, Human-Based Computation and Participant Motivation in a Rock-Art Heritage Application

    Science.gov (United States)

    Haubt, R.

    2016-06-01

    This paper explores a Radical Collaborative Approach in the global and centralized Rock-Art Database project to find new ways to look at rock-art by making information more accessible and more visible through public contributions. It looks at rock-art through the Key Performance Indicator (KPI), identified with the latest Australian State of the Environment Reports to help develop a better understanding of rock-art within a broader Cultural and Indigenous Heritage context. Using a practice-led approach the project develops a conceptual collaborative model that is deployed within the RADB Management System. Exploring learning theory, human-based computation and participant motivation the paper develops a procedure for deploying collaborative functions within the interface design of the RADB Management System. The paper presents the results of the collaborative model implementation and discusses considerations for the next iteration of the RADB Universe within an Agile Development Approach.

  5. An exploration in acoustic radiation force experienced by cylindrical shells via resonance scattering theory.

    Science.gov (United States)

    Rajabi, Majid; Behzad, Mehdi

    2014-04-01

    In nonlinear acoustic regime, a body insonified by a sound field is known to experience a steady force that is called the acoustic radiation force (RF). This force is a second-order quantity of the velocity potential function of the ambient medium. Exploiting the sufficiency of linear solution representation of potential function in RF formulation, and following the classical resonance scattering theorem (RST) which suggests the scattered field as a superposition of the resonant field and a background (non-resonant) component, we will show that the radiation force is a composition of three components: background part, resonant part and their interaction. Due to the nonlinearity effects, each part contains the contribution of pure partial waves in addition to their mutual interaction. The numerical results propose the residue component (i.e., subtraction of the background component from the RF) as a good indicator of the contribution of circumferential surface waves in RF. Defining the modal series of radiation force function and its components, it will be shown that within each partial wave, the resonance contribution can be synthesized as the Breit-Wigner form for adequately none-close resonant frequencies. The proposed formulation may be helpful essentially due to its inherent value as a canonical subject in physical acoustics. Furthermore, it may make a tunnel through the circumferential resonance reducing effects on radiation forces. Copyright © 2013 Elsevier B.V. All rights reserved.

  6. Resonance scattering by auroral N2+: steady state theory and observations from Svalbard

    Directory of Open Access Journals (Sweden)

    O. Jokiaho

    2009-09-01

    Full Text Available Studies of auroral energy input at high latitudes often depend on observations of emissions from the first negative band of ionised nitrogen. However, these emissions are affected by solar resonance scattering, which makes photometric and spectrographic measurements difficult to interpret. This work is a statistical study from Longyearbyen, Svalbard, Norway, during the solar minimum between January and March 2007, providing a good coverage in shadow height position and precipitation conditions. The High Throughput Imaging Echelle Spectrograph (HiTIES measured three bands of N2+ 1N (0,1, (1,2 and (2,3, and one N2 2P band (0,3 in the magnetic zenith. The brightness ratios of the N2+ bands are compared with a theoretical treatment with excellent results. Balance equations for all important vibrational levels of the three lowest electronic states of the N2+ molecule are solved for steady-state, and the results combined with ion chemistry modelling. Brightnesses of the (0,1, (1,2 and (2,3 bands of N2+ 1N are calculated for a range of auroral electron energies, and different values of shadow heights. It is shown that in sunlit aurora, the brightness of the (0,1 band is enhanced, with the scattered contribution increasing with decreasing energy of precipitation (10-fold enhancements for energies of 100 eV. The higher vibrational bands are enhanced even more significantly. In sunlit aurora the observed 1N (1,2/(0,1 and (2,3/(0,1 ratios increase as a function of decreasing precipitation energy, as predicted by theory. In non-sunlit aurora the N2+ species have a constant proportionality to neutral N2. The ratio of 2P(0,3/1N(0,1 in the morning hours shows a pronounced decrease, indicating enhancement of N2+ 1N emission. Finally we study the relationship of all emissions and their ratios to rotational temperatures. A clear effect is observed on rotational development of the bands. It is possible that greatly enhanced rotational temperatures may be a

  7. State of art in experimental studies and theory of superheavy elements

    International Nuclear Information System (INIS)

    Zvara, I.

    2002-01-01

    : only electronic structure and energy diagrams of SHE atoms and molecules with low number of the lightest ligands (H, F) can be calculated to an accuracy of ± 0.1 eV or so (the calculated values for the closest homologues of SHE reproduce the experimental data that correctly). Such a calculation takes dozens of CPU hours at a supercomputer. Experimenters have to do with more complex molecules or ions in solutions and heavier ligands (Cl, Br) which cannot be predicted so trustworthy right today. Moreover, the theory is not yet able to quantitatively link the atomic / molecular parameters to bulk properties of the compounds - these are of major interest. An analysis of the present situation in physics and chemistry of SHE and the prospects for the coming years lead to a moderate optimism. (author)

  8. Radially and azimuthally dependent resonance self-shielding treatment for general multi-region geometry based on a unified theory

    International Nuclear Information System (INIS)

    Koike, Hiroki; Kirimura, Kazuki; Yamaji, Kazuya; Kosaka, Shinya; Yamamoto, Akio

    2018-01-01

    A unified resonance self-shielding method, which can treat general sub-divided fuel regions, is developed for lattice physics calculations in reactor physics field. In a past study, a hybrid resonance treatment has been developed by theoretically integrating equivalence theory and ultra-fine-group slowing-down calculation. It can be applied to a wide range of neutron spectrum conditions including low moderator density ranges in severe accident states, as long as each fuel region is not sub-divided. In order to extend the method for radially and azimuthally sub-divided multi-region geometry, a new resonance treatment is established by incorporating the essence of sub-group method. The present method is composed of two-step flux calculation, i.e. 'coarse geometry + fine energy' (first step) and 'fine geometry + coarse energy' (second step) calculations. The first step corresponds to a hybrid model of the equivalence theory and the ultra-fine-group calculation, and the second step corresponds to the sub-group method. From the verification results, effective cross-sections by the new method show good agreement with the continuous energy Monte-Carlo results for various multi-region geometries including non-uniform fuel compositions and temperature distributions. The present method can accurately generate effective cross-sections with short computation time in general lattice physics calculations. (author)

  9. Quasi-linear theory for a tokamak plasma in the presence of cyclotron resonance

    International Nuclear Information System (INIS)

    Belikov, V.S.; Kolesnichenko, Ya.I.

    1993-01-01

    Quasi-linear diffusion equations for the distribution function of trapped and circulating particles interacting with waves in a tokamak by means of cyclotron resonance are derived. The resulting equations reveal new features of quasi-linear diffusion and are of two kinds, one which involves bounce resonances overlapping in velocity space and one with well separated bounce resonances. These two cases correspond to situations where the phase of the wave-particle interaction between successive resonances can be considered as random or deterministic, respectively. An analysis of the conditions of applicability of the new equations is carried out and previous well-known forms of the quasi-linear diffusion equations are shown to be recovered in the proper limits. (10 refs., 3 figs.)

  10. Acoustic resonances of fluid-immersed elastic cylinders and spheroids: Theory and experiment

    Science.gov (United States)

    Niemiec, Jan; Überall, Herbert; Bao, X. L.

    2002-05-01

    Frequency resonances in the scattering of acoustic waves from a target object are caused by the phase matching of surface waves repeatedly encircling the object. This is exemplified here by considering elastic finite cylinders and spheroids, and the phase-matching condition provides a means of calculating the complex resonance frequencies of such objects. Tank experiments carried out at Catholic University, or at the University of Le Havre, France by G. Maze and J. Ripoche, have been interpreted using this approach. The experiments employed sound pulses to measure arrival times, which allowed identification of the surface paths taken by the surface waves, thus giving rise to resonances in the scattering amplitude. A calculation of the resonance frequencies using the T-matrix approach showed satisfactory agreement with the experimental resonance frequencies that were either measured directly (as at Le Havre), or that were obtained by the interpretation of measured arrival times (at Catholic University) using calculated surface wave paths, and the extraction of resonance frequencies therefrom, on the basis of the phase-matching condition. Results for hemispherically endcapped, evacuated steel cylinders obtained in a lake experiment carried out by the NSWC were interpreted in the same fashion.

  11. Application of catastrophe theory to a point model for bumpy torus with neoclassical non-resonant electrons

    Energy Technology Data Exchange (ETDEWEB)

    Punjabi, A; Vahala, G [College of William and Mary, Williamsburg, VA (USA). Dept. of Physics

    1983-12-01

    The point model for the toroidal core plasma in the ELMO Bumpy Torus (with neoclassical non-resonant electrons) is examined in the light of catastrophe theory. Even though the point model equations do not constitute a gradient dynamic system, the equilibrium surfaces are similar to those of the canonical cusp catastrophe. The point model is then extended to incorporate ion cyclotron resonance heating. A detailed parametric study of the equilibria is presented. Further, the nonlinear time evolution of these equilibria is studied, and it is observed that the point model obeys the delay convention (and hence hysteresis) and shows catastrophes at the fold edges of the equilibrium surfaces. Tentative applications are made to experimental results.

  12. O pensamento criativo de Paul Klee: arte e música na constituição da Teoria da Forma The creative thinking of Paul Klee: art and music in the formation of the Theory of Form

    Directory of Open Access Journals (Sweden)

    Rosana Costa Ramalho de Castro

    2010-01-01

    Full Text Available Estudo sobre a Teoria da Forma concebida no início do século XX pelo artista plástico Paul Klee e publicado no livro O Pensamento Criativo (KLEE, 1920. A Teoria da Forma de Paul Klee é uma demonstração do pensamento artístico que adota pressupostos formais, previamente estabelecidos para resultar na prática da representação artística. Klee identificou as relações formais entre a música e as artes visuais, apresentando conexões entre a linha melódica e a linha no desenho; o ritmo e as seqüências de módulos e sub-módulos; os tempos dos compassos e as divisões da pintura; a métrica da música e a modulação da forma e da cor nas artes visuais. Klee também apresentou suas experiências com superposição de cores e texturas para representar visualmente a polifonia. A Teoria da Forma de Paul Klee é um exemplo de estudo que pressupõe modelos formais para a elaboração artística e projetual.Study on the Theory of Form conceived in the early twentieth century by artist Paul Klee and published in the book The Creative Thinking (KLEE, 1920. The Theory of Form of Paul Klee is a demonstration of an artistic thought that adopts the previously established formal prerequisites that result in the practice of artistic representation. Klee identified the formal relationship between music and the visual arts, providing connections between the melodic line and the line in the drawing, rhythm and sequence of modules and sub-modules, the pulses of the measures and the divisions of the painting, metrics in music and the modulation of shape and color in the visual arts. Klee also presented his experiences with overlapping colors and textures to visually represent polyphony. The Theory of Form of Paul Klee is an example of a study that requires formal models for the artistic and design elaboration.

  13. A new scalar resonance at 750 GeV: towards a proof of concept in favor of strongly interacting theories

    International Nuclear Information System (INIS)

    Son, Minho; Urbano, Alfredo

    2016-01-01

    We interpret the recently observed excess in the diphoton invariant mass as a new spin-0 resonant particle. On theoretical grounds, an interesting question is whether this new scalar resonance belongs to a strongly coupled sector or a well-defined weakly coupled theory. A possible UV-completion that has been widely considered in literature is based on the existence of new vector-like fermions whose loop contributions — Yukawa-coupled to the new resonance — explain the observed signal rate. The large total width preliminarily suggested by data seems to favor a large Yukawa coupling, at the border of a healthy perturbative definition. This potential problem can be fixed by introducing multiple vector-like fermions or large electric charges, bringing back the theory to a weakly coupled regime. However, this solution risks to be only a low-energy mirage: large multiplicity or electric charge can dangerously reintroduce the strong regime by modifying the renormalization group running of the dimensionless couplings. This issue is also tightly related to the (in)stability of the scalar potential. First, we study — in the theoretical setup described above — the parametric behavior of the diphoton signal rate, total width, and one-loop β functions. Then, we numerically solve the renormalization group equations, taking into account the observed diphoton signal rate and total width, to investigate the fate of the weakly coupled theory. We find that — with the only exception of few fine-tuned directions — weakly coupled interpretations of the excess are brought back to a strongly coupled regime if the running is taken into account.

  14. A small-displacement sensor using total internal reflection theory and surface plasmon resonance technology for heterodyne interferometry.

    Science.gov (United States)

    Wang, Shinn-Fwu

    2009-01-01

    A small-displacement sensor based on total-internal reflection theory and surface plasmon resonance technology is proposed for use in heterodyne interferometry. A small displacement can be obtained simply by measuring the variation in phase difference between s- and p-polarization states with the small-displacement sensor. The theoretical displacement resolution of the small-displacement sensor can reach 0.45 nm. The sensor has some additional advantages, e.g., a simple optical setup, high resolution, high sensitivity and rapid measurement. Its feasibility is also demonstrated.

  15. Localized surface plasmon resonance in silver nanoparticles: Atomistic first-principles time-dependent density-functional theory calculations

    OpenAIRE

    Kuisma, Mikael; Sakko, Arto; Rossi, Tuomas P.; Larsen, Ask H.; Enkovaara, Jussi; Lehtovaara, Lauri; Rantala, Tapio T.

    2015-01-01

    We observe using ab initio methods that localized surface plasmon resonances in icosahedral silver nanoparticles enter the asymptotic region already between diameters of 1 and 2 nm, converging close to the classical quasistatic limit around 3.4 eV. We base the observation on time-dependent density-functional theory simulations of the icosahedral silver clusters Ag$_{55}$ (1.06 nm), Ag$_{147}$ (1.60 nm), Ag$_{309}$ (2.14 nm), and Ag$_{561}$ (2.68 nm). The simulation method combines the adiabat...

  16. AUS module MIRANDA - a data preparation code based on multiregion resonance theory

    International Nuclear Information System (INIS)

    Robinson, G.S.

    1977-07-01

    MIRANDA is a data preparation module of the AUS reactor neutronics scheme and is used to prepare multigroup cross-section data which are pertinent to a particular reactor system from a general purpose multigroup library of cross sections. The cross-section library has been prepared from ENDF/B and includes temperature dependent data and resonance cross sections represented by subgroup parameters. The MIRANDA module includes a multiregion resonance calculation in slab, cylinder or cluster geometry, a homogeneous Bsub(L) flux solution, and a group condensation facility. Interaction with other AUS modules, particularly for burnup calculations, is provided. (Author)

  17. Bi-Frequency Modulated Quasi-Resonant Converters: Theory and Applications

    Science.gov (United States)

    Zhang, Yuefeng

    1995-01-01

    To avoid the variable frequency operation of quasi -resonant converters, many soft-switching PWM converters have been proposed, all of them require an auxiliary switch, which will increase the cost and complexity of the power supply system. In this thesis, a new kind of technique for quasi -resonant converters has been proposed, which is called the bi-frequency modulation technique. By operating the quasi-resonant converters at two switching frequencies, this technique enables quasi-resonant converters to achieve the soft-switching, at fixed switching frequencies, without an auxiliary switch. The steady-state analysis of four commonly used quasi-resonant converters, namely, ZVS buck, ZCS buck, ZVS boost, and ZCS boost converter has been presented. Using the concepts of equivalent sources, equivalent sinks, and resonant tank, the large signal models of these four quasi -resonant converters were developed. Based on these models, the steady-state control characteristics of BFM ZVS buck, BFM ZCS buck, BFM ZVS boost, and BFM ZCS boost converter have been derived. The functional block and design consideration of the bi-frequency controller were presented, and one of the implementations of the bi-frequency controller was given. A complete design example has been presented. Both computer simulations and experimental results have verified that the bi-frequency modulated quasi-resonant converters can achieve soft-switching, at fixed switching frequencies, without an auxiliary switch. One of the application of bi-frequency modulation technique is for EMI reduction. The basic principle of using BFM technique for EMI reduction was introduced. Based on the spectral analysis, the EMI performances of the PWM, variable-frequency, and bi-frequency modulated control signals was evaluated, and the BFM control signals show the lowest EMI emission. The bi-frequency modulated technique has also been applied to the power factor correction. A BFM zero -current switching boost converter has

  18. Acoustofluidics: theory and simulation of radiation forces at ultrasound resonances in microfluidic devices

    DEFF Research Database (Denmark)

    Barnkob, Rune; Bruus, Henrik

    2009-01-01

    Theoretical analysis is combined with numerical simulations to optimize designs and functionalities of acoustofluidic devices, i.e. microfluidic devices in which ultrasound waves are used to anipulate biological particles. The resonance frequencies and corresponding modes of the acoustic fields...... are calculated for various specific geometries of glass/silicon chips containing water-filled microchannels. A special emphasis is put on taking the surrounding glass/silicon material into account, thus going beyond the traditional transverse half-wavelength picture. For the resonance frequencies, where...

  19. S-wave Kπ scattering in chiral perturbation theory with resonances

    International Nuclear Information System (INIS)

    Jamin, Matthias; Oller, Jose Antonio; Pich, Antonio

    2000-01-01

    We present a detailed analysis of S-wave Kπ scattering up to 2 GeV, making use of the resonance chiral Lagrangian predictions together with a suitable unitarisation method. Our approach incorporates known theoretical constraints at low and high energies. The present experimental status, with partly conflicting data from different experiments, is discussed. Our analysis allows to resolve some experimental ambiguities, but better data are needed in order to determine the cross-section in the higher-energy range. Our best fits are used to determine the masses and widths of the relevant scalar resonances in this energy region

  20. The Movement-Image Compatibility Effect: Embodiment Theory Interpretations of Motor Resonance With Digitized Photographs, Drawings, and Paintings

    Directory of Open Access Journals (Sweden)

    Mark-Oliver Casper

    2018-06-01

    Full Text Available To evoke the impression of movement in the “immobile” image is one of the central motivations of the visual art, and the activating effect of images has been discussed in art psychology already some 100 years ago. However, this topic has up to now been largely neglected by the researchers in cognitive psychology and neuroscience. This study investigates – from an interdisciplinary perspective – the formation of lateralized instances of motion when an observer perceives movement in an image. A first step was to identify images that evoke a perception of movement in a certain direction and to give this a rating. Reaction times leading to the engagement of a joystick following the presentation of images are used to evidence the postulated movement occasioned by the perception of movement in an image. Where the required direction of joystick moves matched the expected perception of movement direction in the image, significantly shorter reaction times were recorded. The experiment was able to prove a “movement-image compatibility effect” in observers of images. Based on this, the paper revisits and brings up to date the theses on motor sensory response to images which were developed in art psychology at the beginning of the 20th century. It furthermore contributes an embodiment theory interpretation to the prevalent representational explanation of compatibility effects.

  1. Generalized viscothermoelasticity theory of dual-phase-lagging model for damping analysis in circular micro-plate resonators

    Science.gov (United States)

    Grover, D.; Seth, R. K.

    2018-05-01

    Analysis and numerical results are presented for the thermoelastic dissipation of a homogeneous isotropic, thermally conducting, Kelvin-Voigt type circular micro-plate based on Kirchhoff's Love plate theory utilizing generalized viscothermoelasticity theory of dual-phase-lagging model. The analytical expressions for thermoelastic damping of vibration and frequency shift are obtained for generalized dual-phase-lagging model and coupled viscothermoelastic plates. The scaled thermoelastic damping has been illustrated in case of circular plate and axisymmetric circular plate for fixed aspect ratio for clamped and simply supported boundary conditions. It is observed that the damping of vibrations significantly depend on time delay and mechanical relaxation times in addition to thermo-mechanical coupling in circular plate under resonance conditions and plate dimensions.

  2. Nuclear magnetic resonance in contemporary art: the case of ''Moon Surface'' by Turcato

    Energy Technology Data Exchange (ETDEWEB)

    Proietti, Noemi; Di Tullio, Valeria; Capitani, Donatella [CNR, Area della Ricerca di Roma, Magnetic Resonance Laboratory ' ' Annalaura Segre' ' , Istituto di Metodologie Chimiche, Monterotondo (Rome) (Italy); Tomassini, Roberta; Guiso, Marcella [Sapienza Universita di Roma, Dipartimento di Chimica, Rome (Italy)

    2013-12-15

    Nuclear Magnetic Resonance (NMR) methodologies were applied to characterize the constitutive materials and the state of degradation of a contemporary painting. The investigation was mandatory to plan a suitable restoration. Noninvasive, portable NMR allowed the detection of degraded regions of the painting based on the measurement of longitudinal relaxation time. A few samples were investigated by high resolution solid state NMR and NMR in solution, which allowed us to identify the polyurethane constituting the artefact, to investigate the microstructure in detail, and to assess that the degradation process mostly affected the ethylene units used to cap the polypropylene oxide polymeric chain. As a matter of fact, a shortening of longitudinal relaxation time was accompanied by a degradation of ethylene units. The degradation of the inorganic loading was investigated by {sup 27}Al MAS, which evidenced the absence of penta-coordinated aluminum in degraded samples. (orig.)

  3. Experimental test of resonant absorption theory. Annual progress report, January 1, 1979-December 31, 1979

    International Nuclear Information System (INIS)

    Yablonovitch, E.

    1979-09-01

    New results are reported on the angular and energy spectrum of resonantly accelerated electrons from a shock front as measured by a miniature β-ray spectrometer. We have devised a multichannel electron collector based on printed circuit board technology. It has been multiplexed into a fast oscilloscope to provide a complete absolute spectrum on a single laser shot

  4. Efficiency evaluation of a 13C Magnetic Resonance birdcage coil: Theory and comparison of four methods

    DEFF Research Database (Denmark)

    Giovannetti, Giulio; Frijia, Francesca; Hartwig, Valentina

    2013-01-01

    Radiofrequency coils in Magnetic Resonance systems are used to produce a homogeneous B1 field for exciting the nuclei and to pick up the signals emitted by the nuclei with high signal-to-noise ratio. Accordingly, coil performance affects strongly the quality of the obtained data and images.Coil e...

  5. Random matrix theory and acoustic resonances in plates with an approximate symmetry

    DEFF Research Database (Denmark)

    Andersen, Anders Peter; Ellegaard, C.; Jackson, A.D.

    2001-01-01

    We discuss a random matrix model of systems with an approximate symmetry and present the spectral fluctuation statistics and eigenvector characteristics for the model. An acoustic resonator like, e.g., an aluminum plate may have an approximate symmetry. We have measured the frequency spectrum and...

  6. Folded Fabry-Perot quasi-optical ring resonator diplexer Theory and experiment

    Science.gov (United States)

    Pickett, H. M.; Chiou, A. E. T.

    1983-01-01

    Performance of folded Fabry-Perot quasi-optical ring resonator diplexers with different geometries of reflecting surfaces is investigated both theoretically and experimentally. Design of optimum surface geometry for minimum diffraction, together with the figure of merit indicating improvement in performance, are given.

  7. Multiphoton resonances

    International Nuclear Information System (INIS)

    Shore, B.W.

    1977-01-01

    The long-time average of level populations in a coherently-excited anharmonic sequence of energy levels (e.g., an anharmonic oscillator) exhibits sharp resonances as a function of laser frequency. For simple linearly-increasing anharmonicity, each resonance is a superposition of various multiphoton resonances (e.g., a superposition of 3, 5, 7, . . . photon resonances), each having its own characteristic width predictable from perturbation theory

  8. The Relevance of Foucauldian Art-of-Living for Ethics Education in a Military Context: Theory and Practice

    Science.gov (United States)

    van Baarle, Eva; Verweij, Desiree; Molewijk, Bert; Widdershoven, Guy

    2018-01-01

    How can ethical decision-making in organizations be further reinforced? This article explores the relevance of Michel Foucault's ideas on art-of-living for ethics education in organizations. First, we present a theoretical analysis of art-of-living in the work of Foucault as well as in the work of two philosophers who greatly influenced his work,…

  9. Postmedijski svet umetnosti: od optičkog nesvesnog do teorije afekta / Postmedia Art World: From an Optical Unconscious toward Theory of Affect

    Directory of Open Access Journals (Sweden)

    Bojana Matejić

    2013-12-01

    Full Text Available The thesis of this paper implies two assumptions: Although the term visual culture theory has been often used as a synonym for domain of new visual studies in the wider literature today, it is unusually important to consider and underscore the limits of their methodological approach. While the visual culture theory is based on the application of visual cultural representation theory’s methods – the theory of ideology, discursive analysis, critical theory, semiology, sign theory, art history, anthropology, etc., the plane of new visual studies examines the problems of change aspects of the human perception, visual observation and ontology of the (new media in relation to transformation of the nature of (new technologies. Such approach relies in part on contemporary researches and hypotheses in the field of natural sciences (biology, physiology, neuro-science, optics, etc. The conceptualization of the optical unconscious to/beyond formless indicates Krauss’s theoretical shift towards the new visual studies, where the notion affect occupies a key place. Accordingly, this text presents polemical critique of pure perception in relation to the discourse of post/(new-media art world.

  10. Introduction to theory and analysis of resolved (and unresolved) neutron resonances via SAMMY

    Energy Technology Data Exchange (ETDEWEB)

    Larson, N.M.

    1998-07-01

    Neutron cross-section data are important for two distinct purposes: first, they provide insight into the nature of matter, thus assisting in the understanding of fundamental physics; second, they are needed for practical applications (e.g., for calculating when and how a reactor will become critical, or how much shielding is needed for storage of nuclear materials, and for medical applications). Neutron cross section data in the resolved-resonance region are generally obtained by time-of-flight experiments, which must be carefully analyzed if they are to be properly understood and utilized. In this paper, important features of the analysis process are discussed, with emphasis on the particular technique used in the analysis code SAMMY. Other features of the code are also described; these include such topics as calculation of group cross sections (including covariance matrices), generation and fitting of integral quantities, and extensions into the unresolved-resonance region and higher-energy regions.

  11. Artful creation

    DEFF Research Database (Denmark)

    Darsø, Lotte

    2013-01-01

    An introduction to the field of Arts-in-Business outlining 4 different approaches: 1) Art as decoration, 2) Art as intertainment, 3) Arts as instrumental, 4) Art as strategic......An introduction to the field of Arts-in-Business outlining 4 different approaches: 1) Art as decoration, 2) Art as intertainment, 3) Arts as instrumental, 4) Art as strategic...

  12. Electronic energy transfer through non-adiabatic vibrational-electronic resonance. I. Theory for a dimer

    Science.gov (United States)

    Tiwari, Vivek; Peters, William K.; Jonas, David M.

    2017-10-01

    Non-adiabatic vibrational-electronic resonance in the excited electronic states of natural photosynthetic antennas drastically alters the adiabatic framework, in which electronic energy transfer has been conventionally studied, and suggests the possibility of exploiting non-adiabatic dynamics for directed energy transfer. Here, a generalized dimer model incorporates asymmetries between pigments, coupling to the environment, and the doubly excited state relevant for nonlinear spectroscopy. For this generalized dimer model, the vibrational tuning vector that drives energy transfer is derived and connected to decoherence between singly excited states. A correlation vector is connected to decoherence between the ground state and the doubly excited state. Optical decoherence between the ground and singly excited states involves linear combinations of the correlation and tuning vectors. Excitonic coupling modifies the tuning vector. The correlation and tuning vectors are not always orthogonal, and both can be asymmetric under pigment exchange, which affects energy transfer. For equal pigment vibrational frequencies, the nonadiabatic tuning vector becomes an anti-correlated delocalized linear combination of intramolecular vibrations of the two pigments, and the nonadiabatic energy transfer dynamics become separable. With exchange symmetry, the correlation and tuning vectors become delocalized intramolecular vibrations that are symmetric and antisymmetric under pigment exchange. Diabatic criteria for vibrational-excitonic resonance demonstrate that anti-correlated vibrations increase the range and speed of vibronically resonant energy transfer (the Golden Rule rate is a factor of 2 faster). A partial trace analysis shows that vibronic decoherence for a vibrational-excitonic resonance between two excitons is slower than their purely excitonic decoherence.

  13. Thermal fluctuations in resonant motion of fluxons on a Josephson transmission line: Theory and experiment

    DEFF Research Database (Denmark)

    Jørgensen, E.; Koshelets, V. P.; Monaco, Roberto

    1982-01-01

    The radiation emission from long and narrow Josephson tunnel junctions dc-current biased on zero-field steps has been ascribed to resonant motion of fluxons on the transmission line. Within this dynamic model a theoretical expression for the radiation linewidth is derived from a full statistical ...... treatment of thermal fluctuations in the fluxon velocity. The result appears to be very general and is corroborated by experimental determination of linewidth and frequency of radiation emitted from overlap Nb-I-Pb junctions....

  14. Theory and applications of maps on SO(3) in nuclear magnetic resonance

    International Nuclear Information System (INIS)

    Cho, H.M.

    1987-02-01

    Theoretical approaches and experimental work in the design of multiple pulse sequences in Nuclear Magnetic Resonance (NMR) are the subjects of this dissertation. Sequences of discrete pulses which reproduce the nominal effect of single pulses, but over substantially broader, narrower, or more selective ranges of transition frequencies, radiofrequency field amplitudes, and spin-spin couplings than the single pulses they replace, are developed and demonstrated. 107 refs., 86 figs., 6 tabs

  15. Theory of magnetoelectric effect in multilayer nanocomposites on a substrate: Resonant bending-mode response

    Directory of Open Access Journals (Sweden)

    Matthias C. Krantz

    2013-05-01

    Full Text Available Resonant bending-mode magnetoelectric (ME coefficients of magnetostrictive-piezoelectric multilayer cantilevers are calculated analytically using a model developed for arbitrary multilayers on a substrate. Without quality factor effects the ME coefficient maxima in the four-dimensional parameter space of layer numbers, layer sequences, piezoelectric volume fractions, and substrate thicknesses are found to be essentially constant for nonzero substrate thickness. Global maxima occur for bilayers without substrates. Vanishing magnetoelectric response regions result from voltage cancellation in piezoelectric layers or absence of bending-mode excitation. They are determined by the neutral plane position in the multilayer stack. With Q-factor effects dominated by viscous air damping ME coefficients strongly increase with cantilever thickness primarily due to increasing resonance frequencies. The results yield a layer specific prediction of ME coefficients, resonance frequencies, and Q-factors in arbitrary multilayers and thus distinction of linear-coupling and Q-factor effects from exchange interaction, interface, or nonlinear ME effects.

  16. Excitation of the ionospheric Alfvén resonator from the ground: Theory and experiments

    Science.gov (United States)

    Streltsov, A. V.; Chang, C.-L.; Labenski, J.; Milikh, G.; Vartanyan, A.; Snyder, A. L.

    2011-10-01

    We report results from numerical and experimental studies of the excitation of ULF shear Alfvén waves inside the ionospheric Alfvén resonator (IAR) by heating the ionosphere with powerful HF waves launched from the High Frequency Active Auroral Research Program (HAARP) facility in Alaska. Numerical simulations of the two-fluid MHD model describing IAR in a dipole magnetic field geometry with plasma parameters taken from the observations at HAARP during the October-November 2010 experimental campaign reveal that the IAR quality is higher during nighttime conditions, when the ionospheric conductivity is very low. Simulations also reveal that the resonance wave cannot be identified from the magnetic measurements on the ground or at an altitude above 600 km because the magnetic field in this wave has nodes on both ends of the resonator, and the best way to detect IAR modes is by measuring the electric field on low Earth orbit satellites. These theoretical predictions are in good, quantitative agreement with results from observations: In particular, (1) observations from the ground-based magnetometer at the HAARP site demonstrate no significant difference in the amplitudes of the magnetic field generated by HAARP in the frequency range from 0 to 5 Hz, and (2) the DEMETER satellite detected the electric field of the IAR first harmonic at an altitude of 670 km above HAARP during the heating experiment.

  17. Number-Theory in Nuclear-Physics in Number-Theory: Non-Primality Factorization As Fission VS. Primality As Fusion; Composites' Islands of INstability: Feshbach-Resonances?

    Science.gov (United States)

    Siegel, Edward

    2011-10-01

    Numbers: primality/indivisibility/non-factorization versus compositeness/divisibility /factor-ization, often in tandem but not always, provocatively close analogy to nuclear-physics: (2 + 1)=(fusion)=3; (3+1)=(fission)=4[=2 × 2]; (4+1)=(fusion)=5; (5 +1)=(fission)=6[=2 × 3]; (6 + 1)=(fusion)=7; (7+1)=(fission)=8[= 2 × 4 = 2 × 2 × 2]; (8 + 1) =(non: fission nor fusion)= 9[=3 × 3]; then ONLY composites' Islands of fusion-INstability: 8, 9, 10; then 14, 15, 16,... Could inter-digit Feshbach-resonances exist??? Applications to: quantum-information/computing non-Shore factorization, millennium-problem Riemann-hypotheses proof as Goodkin BEC intersection with graph-theory ``short-cut'' method: Rayleigh(1870)-Polya(1922)-``Anderson'' (1958)-localization, Goldbach-conjecture, financial auditing/accounting as quantum-statistical-physics;... abound!!!

  18. CRADA Final Report for CRADA Number ORNL98-0521 : Development of an Electric Bus Inverter Based on ORNL Auxiliary Resonant Tank (ART) Soft-Switching Technology; TOPICAL

    International Nuclear Information System (INIS)

    Ayers, C.W.

    2001-01-01

    The Power Electronics and Electric Machinery Research Center (PEEMRC) of Oak Ridge National Laboratory (ORNL) has for many years been developing technologies for power converters for motor drives and many other applications. Some of the research goals are to improve efficiency and reduce audible and electromagnetic interference noise generation for inverters and the driven loads. The converters are being required to produce more power with reduced weight and volume, which requires improvements in heat removal from the electronics, as well as improved circuit designs that have fewer electrical losses. PEEMRC has recently developed and patented a soft-switching inverter topology called an Auxiliary Resonant Tank (ART), and this design has been tested and proven at ORNL using a 10-kW laboratory prototype. The objective of this project was to develop, test, and install the ART inverter technology in an electric transit bus with the final goal of evaluating performance of the ORNL inverter under field conditions in a vehicle. A scaled-up inverter with the capacity to drive a 22-e bus was built based on the 10-kW ORNL laboratory prototype ART soft-switching inverter. Most (if not all) commercially available inverters for traction drive and other applications use hard-switching inverters. A Cooperative Research and Development Agreement was established with the Chattanooga Area Regional Transit Authority (CARTA), the Electric Transit Vehicle Institute (ETVI), and Advanced Vehicle Systems (AVS), all of Chattanooga, along with ORNL. CARTA, which maintains and operates the public transit system in Chattanooga, provided an area for testing the vehicle alongside other similar vehicles in the normal operating environment. ETVI offers capabilities in standardized testing and reporting and also provides exposure in the electric transit vehicle arena for ORNL's technologies. The third Chattanooga partner, (AVS) manufactures all-electric and hybrid electric transit buses using

  19. Theory of resonant donor-impurity magnetopolaron in semiconductor quantum wells

    International Nuclear Information System (INIS)

    Osorio, F.A.P.; Maialle, M.Z.; Hipolito, O.

    1989-11-01

    We report for the first time a theoretical calculation for the resonant donor impurity magnetopolaron in GaAs-GA 1-x Al x As quantum-well structures. The intra donor 1s → 2p, transition frequencies are calculated as a function of the magnetic field, by taking into account the polaron effects and nonparabolicity of the conduction band. We found a pinning behaviour due to interaction with LO phonons as suggested by the experimentalists. Our results for the peak positions of those transitions are in very good agreement with recent experimental data. (author). 18 refs, 1 fig

  20. Topology in SU(2) lattice gauge theory and parallelization of functional magnetic resonance imaging

    Energy Technology Data Exchange (ETDEWEB)

    Solbrig, Stefan

    2008-07-01

    In this thesis, I discuss topological properties of quenched SU(2) lattice gauge fields. In particular, clusters of topological charge density exhibit a power-law. The exponent of that power-law can be used to validate models for lattice gauge fields. Instead of working with fixed cutoffs of the topological charge density, using the notion of a ''watermark'' is more convenient. Furthermore, I discuss how a parallel computer, originally designed for lattice gauge field simulations, can be used for functional magnetic resonance imaging. Multi parameter fits can be parallelized to achieve almost real-time evaluation of fMRI data. (orig.)

  1. Quasilinear theory of the ordinary-mode electron-cyclotron resonance in plasmas

    International Nuclear Information System (INIS)

    Arunasalam, V.; Efthimion, P.C.; Hosea, J.C.; Hsuan, H.; Taylor, G.

    1983-11-01

    A coupled set of equations, one describing the time evolution of the ordinary-mode wave energy and the other describing the time evolution of the electron distribution function is presented. The wave damping is mainly determined by T/sub parallel/ while the radiative equilibrium is mainly an equipartition with T/sub perpendicular/. The time rate of change of T/sub perpendicular/, T/sub parallel/, particle (N 0 ), and current (J/sub parellel/) densities are examined for finite k/sub parallel/ electron-cyclotron-resonance heating of plasmas

  2. Topology in SU(2) lattice gauge theory and parallelization of functional magnetic resonance imaging

    International Nuclear Information System (INIS)

    Solbrig, Stefan

    2008-01-01

    In this thesis, I discuss topological properties of quenched SU(2) lattice gauge fields. In particular, clusters of topological charge density exhibit a power-law. The exponent of that power-law can be used to validate models for lattice gauge fields. Instead of working with fixed cutoffs of the topological charge density, using the notion of a ''watermark'' is more convenient. Furthermore, I discuss how a parallel computer, originally designed for lattice gauge field simulations, can be used for functional magnetic resonance imaging. Multi parameter fits can be parallelized to achieve almost real-time evaluation of fMRI data. (orig.)

  3. Topology in SU(2) lattice gauge theory and parallelization of functional magnetic resonance imaging

    Energy Technology Data Exchange (ETDEWEB)

    Solbrig, Stefan

    2008-07-01

    In this thesis, I discuss topological properties of quenched SU(2) lattice gauge fields. In particular, clusters of topological charge density exhibit a power-law. The exponent of that power-law can be used to validate models for lattice gauge fields. Instead of working with fixed cutoffs of the topological charge density, using the notion of a ''watermark'' is more convenient. Furthermore, I discuss how a parallel computer, originally designed for lattice gauge field simulations, can be used for functional magnetic resonance imaging. Multi parameter fits can be parallelized to achieve almost real-time evaluation of fMRI data. (orig.)

  4. The Circuit Theory Behind Coupled-Mode Magnetic Resonance-Based Wireless Power Transmission.

    Science.gov (United States)

    Kiani, Mehdi; Ghovanloo, Maysam

    2012-09-01

    Inductive coupling is a viable scheme to wirelessly energize devices with a wide range of power requirements from nanowatts in radio frequency identification tags to milliwatts in implantable microelectronic devices, watts in mobile electronics, and kilowatts in electric cars. Several analytical methods for estimating the power transfer efficiency (PTE) across inductive power transmission links have been devised based on circuit and electromagnetic theories by electrical engineers and physicists, respectively. However, a direct side-by-side comparison between these two approaches is lacking. Here, we have analyzed the PTE of a pair of capacitively loaded inductors via reflected load theory (RLT) and compared it with a method known as coupled-mode theory (CMT). We have also derived PTE equations for multiple capacitively loaded inductors based on both RLT and CMT. We have proven that both methods basically result in the same set of equations in steady state and either method can be applied for short- or midrange coupling conditions. We have verified the accuracy of both methods through measurements, and also analyzed the transient response of a pair of capacitively loaded inductors. Our analysis shows that the CMT is only applicable to coils with high quality factor ( Q ) and large coupling distance. It simplifies the analysis by reducing the order of the differential equations by half compared to the circuit theory.

  5. Acoustofluidics: Theory and simulation of streaming and radiation forces at ultrasound resonances in microfluidic devices

    DEFF Research Database (Denmark)

    Bruus, Henrik

    2009-01-01

    fields, which are directly related to the acoustic radiation force on single particles and to the acoustic streaming of the liquid. For the radiation pressure effects, there is good agreement between theory and simulation, while the numeric results for the acoustic streaming effects are more problematic...

  6. Random-matrix theory of amplifying and absorbing resonators with PT or PTT' symmetry

    International Nuclear Information System (INIS)

    Birchall, Christopher; Schomerus, Henning

    2012-01-01

    We formulate Gaussian and circular random-matrix models representing a coupled system consisting of an absorbing and an amplifying resonator, which are mutually related by a generalized time-reversal symmetry. Motivated by optical realizations of such systems we consider a PT or a PTT ' time-reversal symmetry, which impose different constraints on magneto-optical effects, and then focus on five common settings. For each of these, we determine the eigenvalue distribution in the complex plane in the short-wavelength limit, which reveals that the fraction of real eigenvalues among all eigenvalues in the spectrum vanishes if all classical scales are kept fixed. Numerically, we find that the transition from real to complex eigenvalues in the various ensembles display a different dependence on the coupling strength between the two resonators. These differences can be linked to the level spacing statistics in the Hermitian limit of the considered models. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical devoted to ‘Quantum physics with non-Hermitian operators’. (paper)

  7. Using Computer Output as a Vehicle for Self-Directed Study of Financial Theory: The Art of Teaching Backwards

    Science.gov (United States)

    Campbell, Robert D.

    2017-01-01

    This paper presents an example of an approach to teaching financial theory at the college and post-graduate levels that I call "teaching backwards". In the more traditional approach, instructors begin by explaining financial theory, then proceed to give examples of the way this theory can be applied to a business problem, structuring…

  8. Application of chiral resonance Lagrangian theories to the muon g-2

    Energy Technology Data Exchange (ETDEWEB)

    Jegerlehner, Fred [Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik; Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)

    2013-12-15

    We think that phenomenological resonance Lagrangian models, constrained by global fits from low energy hadron reaction data, can help to improve muon g-2 predictions. The main issue are those contributions which cannot be calculated by perturbative means: the hadronic vacuum polarization (HVP) effects and the hadronic light-by-light (HLbL) scattering contribution. I review recent progress in the evaluation of the HVP contribution within the broken Hidden Local Symmetry (HLS) framework, worked out in collaboration with M. Benayoun, P. David and L. Del-Buono. Our HLS driven estimate reads a{sub {mu}}{sup LO} {sup had} = (688.60{+-}4.24) . 10{sup -10} and we find a{sub {mu}}{sup the} = (11659177.65{+-}5.76) . 10{sup -10}.

  9. Application of chiral resonance Lagrangian theories to the muon g-2

    International Nuclear Information System (INIS)

    Jegerlehner, Fred

    2013-12-01

    We think that phenomenological resonance Lagrangian models, constrained by global fits from low energy hadron reaction data, can help to improve muon g-2 predictions. The main issue are those contributions which cannot be calculated by perturbative means: the hadronic vacuum polarization (HVP) effects and the hadronic light-by-light (HLbL) scattering contribution. I review recent progress in the evaluation of the HVP contribution within the broken Hidden Local Symmetry (HLS) framework, worked out in collaboration with M. Benayoun, P. David and L. Del-Buono. Our HLS driven estimate reads a μ LO had = (688.60±4.24) . 10 -10 and we find a μ the = (11659177.65±5.76) . 10 -10 .

  10. Book received: Paul van den Akker, Looking for Lines: Theories of the Essence of Art and the Problem of Mannerism, Amsterdam: Amsterdam University Press 2010 including preface, contents and introduction.

    Directory of Open Access Journals (Sweden)

    Paul van den Akker

    2010-12-01

    Full Text Available Paul van den Akker, Looking for Lines: Theories of the Essence of Art and the Problem of Mannerism, Amsterdam: Amsterdam University Press 2010 including preface, contents and introduction.

  11. Detuned resonances of Tollmien-Schlichting waves in an airfoil boundary layer: Experiment, theory, and direct numerical simulation

    Science.gov (United States)

    Würz, W.; Sartorius, D.; Kloker, M.; Borodulin, V. I.; Kachanov, Y. S.; Smorodsky, B. V.

    2012-09-01

    Transition prediction in two-dimensional laminar boundary layers developing on airfoil sections at subsonic speeds and very low turbulence levels is still a challenge. The commonly used semi-empirical prediction tools are mainly based on linear stability theory and do not account for nonlinear effects present unavoidably starting with certain stages of transition. One reason is the lack of systematic investigations of the weakly nonlinear stages of transition, especially of the strongest interactions of the instability modes predominant in non-self-similar boundary layers. The present paper is devoted to the detailed experimental, numerical, and theoretical study of weakly nonlinear subharmonic resonances of Tollmien-Schlichting waves in an airfoil boundary layer, representing main candidates for the strongest mechanism of these initial nonlinear stages. The experimental approach is based on phase-locked hot-wire measurements under controlled disturbance conditions using a new disturbance source being capable to produce well-defined, complex wave compositions in a wide range of streamwise and spanwise wave numbers. The tests were performed in a low-turbulence wind tunnel at a chord Reynolds number of Re = 0.7 × 106. Direct numerical simulations (DNS) were utilized to provide a detailed comparison for the test cases. The results of weakly nonlinear theory (WNT) enabled a profound understanding of the underlying physical mechanisms observed in the experiments and DNS. The data obtained in experiment, DNS and WNT agree basically and provide a high degree of reliability of the results. Interactions occurring between components of various initial frequency-wavenumber spectra of instability waves are investigated by systematic variation of parameters. It is shown that frequency-detuned and spanwise-wavenumber-detuned subharmonic-type resonant interactions have an extremely large spectral width. Similar to results obtained for self-similar base flows it is found that the

  12. On the local theory of resonant inelastic collisions of slow electrons with carbon dioxide

    International Nuclear Information System (INIS)

    Kazansky, A.K.; Sergeeva, L.Yu.

    1994-01-01

    A method of calculating the cross sections of inelastic vibronic transitions in collisions of slow electrons with polyatomic molecules in the framework of the local theory (the 'boomerang' model) is proposed. The method is based on the study of the time evolution of the initial vibronic wavefunction; the evolution is governed by the (complex valued) Hamiltonian of the intermediate anion state. The method has been applied to the consideration of inelastic electron collisions with the CO 2 molecule in the two-mode approximation (symmetrical stretching and bending). The results obtained demonstrate the importance of the two-mode description for the system which can undergo the Renner transition. (Author)

  13. Electron paramagnetic resonance and density-functional theory studies of Cu(II)-bis(oxamato) complexes.

    Science.gov (United States)

    Bräuer, Björn; Weigend, Florian; Fittipaldi, Maria; Gatteschi, Dante; Reijerse, Edward J; Guerri, Annalisa; Ciattini, Samuele; Salvan, Georgeta; Rüffer, Tobias

    2008-08-04

    In this work we present the investigation of the influence of electronic and structural variations induced by varying the N,N'-bridge on the magnetic properties of Cu(II)- bis(oxamato) complexes. For this study the complexes [Cu(opba)] (2-) ( 1, opba = o-phenylene- bis(oxamato)), [Cu(nabo)] (2-) ( 2, nabo = 2,3-naphthalene- bis(oxamato)), [Cu(acbo)] (2-) ( 3, acbo = 2,3-anthrachinone- bis(oxamato)), [Cu(pba)] (2-) ( 4, pba = propylene- bis(oxamato)), [Cu(obbo)] (2-) ( 5, obbo = o-benzyl- bis(oxamato)), and [Cu(npbo)] (2-) ( 6, npbo = 1,8-naphthalene- bis(oxamato)), and the respective structurally isomorphic Ni(II) complexes ( 8- 13) have been prepared as ( (n)Bu 4N) (+) salts. The new complex ( (n)Bu 4N) 2[Cu(R-bnbo)].2H 2O ( 7, R-bnbo = (R)-1,1'-binaphthalene-2,2'- bis(oxamato)) was synthesized and is the first chiral complex in the series of Cu(II)-bis(oxamato) complexes. The molecular structure of 7 has been determined by single crystal X-ray analysis. The Cu(II) ions of the complexes 1- 7 are eta (4)(kappa (2) N, kappa (2) O) coordinated with a more or less distorted square planar geometry for 1- 6 and a distorted tetrahedral geometry for 7. Using pulsed Electron Nuclear Double Resonance on complex 6, detailed information about the relative orientation of the hyperfine ( A) and nuclear quadrupole tensors ( Q) of the coordinating nitrogens with respect to the g tensor were obtained. Electron Paramagnetic Resonance studies in the X, Q, and W-band at variable temperatures were carried out to extract g and A values of N ligands and Cu ion for 1- 7. The hyperfine values were interpreted in terms of spin population on the corresponding atoms. The obtained trends of the spin population for the monomeric building blocks were shown to correlate to the trends obtained in the dependence of the exchange interaction of the corresponding trinuclear complexes on their geometry.

  14. Experimental Validation of a Theory for a Variable Resonant Frequency Wave Energy Converter (VRFWEC)

    Science.gov (United States)

    Park, Minok; Virey, Louis; Chen, Zhongfei; Mäkiharju, Simo

    2016-11-01

    A point absorber wave energy converter designed to adapt to changes in wave frequency and be highly resilient to harsh conditions, was tested in a wave tank for wave periods from 0.8 s to 2.5 s. The VRFWEC consists of a closed cylindrical floater containing an internal mass moving vertically and connected to the floater through a spring system. The internal mass and equivalent spring constant are adjustable and enable to match the resonance frequency of the device to the exciting wave frequency, hence optimizing the performance. In a full scale device, a Permanent Magnet Linear Generator will convert the relative motion between the internal mass and the floater into electricity. For a PMLG as described in Yeung et al. (OMAE2012), the electromagnetic force proved to cause dominantly linear damping. Thus, for the present preliminary study it was possible to replace the generator with a linear damper. While the full scale device with 2.2 m diameter is expected to generate O(50 kW), the prototype could generate O(1 W). For the initial experiments the prototype was restricted to heave motion and data compared to predictions from a newly developed theoretical model (Chen, 2016).

  15. Biochemical Support for the “Threshold” Theory of Creativity: A Magnetic Resonance Spectroscopy Study

    Science.gov (United States)

    Jung, Rex E.; Gasparovic, Charles; Chavez, Robert S.; Flores, Ranee A.; Smith, Shirley M.; Caprihan, Arvind; Yeo, Ronald A.

    2009-01-01

    A broadly accepted definition of creativity refers to the production of something both novel and useful within a given social context. Studies of patients with neurological and psychiatric disorders and neuroimaging studies of healthy controls have each drawn attention to frontal and temporal lobe contributions to creativity. Based on previous magnetic resonance (MR) spectroscopy studies demonstrating relationships between cognitive ability and concentrations of N-acetyl-aspartate (NAA), a common neurometabolite, we hypothesized that NAA assessed in gray and white matter (from a supraventricular slab) would relate to laboratory measures of creativity. MR imaging and divergent thinking measures were obtained in a cohort of 56 healthy controls. Independent judges ranked the creative products of each participant, from which a “Composite Creativity Index” (CCI) was created. Different patterns of correlations between NAA and CCI were found in higher verbal ability versus lower verbal ability participants, providing neurobiological support for a critical “threshold” regarding the relationship between intelligence and creativity. To our knowledge, this is the first report assessing the relationship between brain chemistry and creative cognition, as measured with divergent thinking, in a cohort comprised exclusively of normal, healthy participants. PMID:19386928

  16. Simulation of resonance hyper-Rayleigh scattering of molecules and metal clusters using a time-dependent density functional theory approach.

    Science.gov (United States)

    Hu, Zhongwei; Autschbach, Jochen; Jensen, Lasse

    2014-09-28

    Resonance hyper-Rayleigh scattering (HRS) of molecules and metal clusters have been simulated based on a time-dependent density functional theory approach. The resonance first-order hyperpolarizability (β) is obtained by implementing damped quadratic response theory using the (2n + 1) rule. To test this implementation, the prototypical dipolar molecule para-nitroaniline (p-NA) and the octupolar molecule crystal violet are used as benchmark systems. Moreover, small silver clusters Ag 8 and Ag 20 are tested with a focus on determining the two-photon resonant enhancement arising from the strong metal transition. Our results show that, on a per atom basis, the small silver clusters possess two-photon enhanced HRS comparable to that of larger nanoparticles. This finding indicates the potential interest of using small metal clusters for designing new nonlinear optical materials.

  17. Kernel Bayesian ART and ARTMAP.

    Science.gov (United States)

    Masuyama, Naoki; Loo, Chu Kiong; Dawood, Farhan

    2018-02-01

    Adaptive Resonance Theory (ART) is one of the successful approaches to resolving "the plasticity-stability dilemma" in neural networks, and its supervised learning model called ARTMAP is a powerful tool for classification. Among several improvements, such as Fuzzy or Gaussian based models, the state of art model is Bayesian based one, while solving the drawbacks of others. However, it is known that the Bayesian approach for the high dimensional and a large number of data requires high computational cost, and the covariance matrix in likelihood becomes unstable. This paper introduces Kernel Bayesian ART (KBA) and ARTMAP (KBAM) by integrating Kernel Bayes' Rule (KBR) and Correntropy Induced Metric (CIM) to Bayesian ART (BA) and ARTMAP (BAM), respectively, while maintaining the properties of BA and BAM. The kernel frameworks in KBA and KBAM are able to avoid the curse of dimensionality. In addition, the covariance-free Bayesian computation by KBR provides the efficient and stable computational capability to KBA and KBAM. Furthermore, Correntropy-based similarity measurement allows improving the noise reduction ability even in the high dimensional space. The simulation experiments show that KBA performs an outstanding self-organizing capability than BA, and KBAM provides the superior classification ability than BAM, respectively. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. Generalized theory of resonance excitation by sound scattering from an elastic spherical shell in a nonviscous fluid.

    Science.gov (United States)

    Mitri, Farid G

    2012-08-01

    This work presents the general theory of resonance scattering (GTRS) by an elastic spherical shell immersed in a nonviscous fluid and placed arbitrarily in an acoustic beam. The GTRS formulation is valid for a spherical shell of any size and material regardless of its location relative to the incident beam. It is shown here that the scattering coefficients derived for a spherical shell immersed in water and placed in an arbitrary beam equal those obtained for plane wave incidence. Numerical examples for an elastic shell placed in the field of acoustical Bessel beams of different types, namely, a zero-order Bessel beam and first-order Bessel vortex and trigonometric (nonvortex) beams are provided. The scattered pressure is expressed using a generalized partial-wave series expansion involving the beam-shape coefficients (BSCs), the scattering coefficients of the spherical shell, and the half-cone angle of the beam. The BSCs are evaluated using the numerical discrete spherical harmonics transform (DSHT). The far-field acoustic resonance scattering directivity diagrams are calculated for an albuminoidal shell immersed in water and filled with perfluoropropane gas, by subtracting an appropriate background from the total far-field form function. The properties related to the arbitrary scattering are analyzed and discussed. The results are of particular importance in acoustical scattering applications involving imaging and beam-forming for transducer design. Moreover, the GTRS method can be applied to investigate the scattering of any beam of arbitrary shape that satisfies the source-free Helmholtz equation, and the method can be readily adapted to viscoelastic spherical shells or spheres.

  19. Relativistic theory of nuclear magnetic resonance parameters in a Gaussian basis representation

    International Nuclear Information System (INIS)

    Kutzelnigg, Werner; Liu Wenjian

    2009-01-01

    The calculation of NMR parameters from relativistic quantum theory in a Gaussian basis expansion requires some care. While in the absence of a magnetic field the expansion in a kinetically balanced basis converges for the wave function in the mean and for the energy with any desired accuracy, this is not necessarily the case for magnetic properties. The results for the magnetizability or the nuclear magnetic shielding are not even correct in the nonrelativistic limit (nrl) if one expands the original Dirac equation in a kinetically balanced Gaussian basis. This defect disappears if one starts from the unitary transformed Dirac equation as suggested by Kutzelnigg [Phys. Rev. A 67, 032109 (2003)]. However, a new difficulty can arise instead if one applies the transformation in the presence of the magnetic field of a point nucleus. If one decomposes certain contributions, the individual terms may diverge, although their sum is regular. A controlled cancellation may become difficult and numerical instabilities can arise. Various ways exist to avoid these singularities and at the same time get the correct nrl. There are essentially three approaches intermediate between the transformed and the untransformed formulation, namely, the bispinor decomposition, the decomposition of the lower component, and the hybrid unitary transformation partially at operator and partially at matrix level. All three possibilities were first considered by Xiao et al. [J. Chem. Phys. 126, 214101 (2007)] in a different context and in a different nomenclature. Their analysis and classification in a more general context are given here for the first time. Use of an extended balanced basis has no advantages and has other drawbacks and is not competitive, while the use of a restricted magnetic balance basis can be justified.

  20. Resonant magnetoelectric response of composite cantilevers: Theory of short vs. open circuit operation and layer sequence effects

    Directory of Open Access Journals (Sweden)

    Matthias C. Krantz

    2015-11-01

    Full Text Available The magnetoelectric effect in layered composite cantilevers consisting of strain coupled layers of magnetostrictive (MS, piezoelectric (PE, and substrate materials is investigated for magnetic field excitation at bending resonance. Analytic theories are derived for the transverse magnetoelectric (ME response in short and open circuit operation for three different layer sequences and results presented and discussed for the FeCoBSi-AlN-Si and the FeCoBSi-PZT-Si composite systems. Response optimized PE-MS layer thickness ratios are found to greatly change with operation mode shifting from near equal MS and PE layer thicknesses in the open circuit mode to near vanishing PE layer thicknesses in short circuit operation for all layer sequences. In addition the substrate layer thickness is found to differently affect the open and short circuit ME response producing shifts and reversal between ME response maxima depending on layer sequence. The observed rich ME response behavior for different layer thicknesses, sequences, operating modes, and PE materials can be explained by common neutral plane effects and different elastic compliance effects in short and open circuit operation.

  1. Using Dynamic Contrast-Enhanced Magnetic Resonance Imaging Data to Constrain a Positron Emission Tomography Kinetic Model: Theory and Simulations

    Directory of Open Access Journals (Sweden)

    Jacob U. Fluckiger

    2013-01-01

    Full Text Available We show how dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI data can constrain a compartmental model for analyzing dynamic positron emission tomography (PET data. We first develop the theory that enables the use of DCE-MRI data to separate whole tissue time activity curves (TACs available from dynamic PET data into individual TACs associated with the blood space, the extravascular-extracellular space (EES, and the extravascular-intracellular space (EIS. Then we simulate whole tissue TACs over a range of physiologically relevant kinetic parameter values and show that using appropriate DCE-MRI data can separate the PET TAC into the three components with accuracy that is noise dependent. The simulations show that accurate blood, EES, and EIS TACs can be obtained as evidenced by concordance correlation coefficients >0.9 between the true and estimated TACs. Additionally, provided that the estimated DCE-MRI parameters are within 10% of their true values, the errors in the PET kinetic parameters are within approximately 20% of their true values. The parameters returned by this approach may provide new information on the transport of a tracer in a variety of dynamic PET studies.

  2. THE ISSUE OF FORMING FUTURE MUSIC TEACHERS’ PROFESSIONAL COMPETENCE BY COMPUTER TECHNOLOGY TOOLS IN THE THEORY OF NATIONAL ART

    Directory of Open Access Journals (Sweden)

    Lyudmila Gavrilova

    2017-04-01

    Full Text Available The article deals with theoretical aspects of forming future music teachers’ professional competence by computer technology tools. The concept of professional competence has become a major criterion of preparing students for professional activities. The issue of the article is relevant as the competence approach has become a basis of implementing computer technologies into future music teachers’ training. The authors give a detailed analysis of implementing computer technologies into musical education. The special attention is paid to using a computer in musical education and making electronic pedagogical resources. The aim of the article is to outline the directions of national art research in the process of implementing computer tools that is one of the most efficient ways of updating process of future music teachers’ training. The article reveals theoretical aspects of forming future music teachers’ professional competence by computer technology tools. The authors point out that implementing musical and computer technologies into music art practice is realized in some directions: using a computer as a new musical instrument in composers, sound engineers, and arrangers’ activities; using a computer for studying the quality of music sound, analysing sounds and music compositions, spectral analysis of acoustic characteristics of singers’ voice; studying ancient music manuscripts due to digital technology; developing hardware and software for music education. A distinct direction of research is the pedagogical aspect of using a computer in music education (music and the use of special software for recording and editing music, the use of multimedia to enhance visibility in education, development of e-learning resources, etc.. The authors conclude that implementing computer technologies into future music teachers’ training makes this process more efficient. In the authors’ opinion the widespread introduction of distance learning

  3. Case Study: Applying the Theory of Planned Behavior as Interventions to Increase Sponsored Project Proposal Submissions from Liberal Arts Faculty

    Science.gov (United States)

    Hartmann, Anita

    2011-01-01

    In the current economic climate, many colleges and universities face similar challenges: the need to increase external sponsorship for research activities and the need to benefit from additional indirect cost recovery. Preparing funding proposals for submission to sponsors is a faculty behavior that can be modified by applying behavioral theory to…

  4. Estimates of the Attenuation Rates of Baroclinic Tidal Energy Caused by Resonant Interactions Among Internal Waves based on the Weak Turbulence Theory

    Science.gov (United States)

    Onuki, Y.; Hibiya, T.

    2016-02-01

    The baroclinic tides are thought to be the dominant energy source for turbulent mixing in the ocean interior. In contrast to the geography of the energy conversion rates from the barotropic to baroclinic tides, which has been clarified in recent numerical studies, the global distribution of the energy sink for the resulting low-mode baroclinic tides remains obscure. A key to resolve this issue is the resonant wave-wave interactions, which transfer part of the baroclinic tidal energy to the background internal wave field enhancing the local energy dissipation rates. Recent field observations and numerical studies have pointed out that parametric subharmonic instability (PSI), one of the resonant interactions, causes significant energy sink of baroclinic tidal energy at mid-latitudes. The purpose of this study is to analyze the quantitative aspect of PSI to demonstrate the global distribution of the intensity of resonant wave interactions, namely, the attenuation rate of low-mode baroclinic tidal energy. Our approach is basically following the weak turbulence theory, which is the standard theory for resonant wave-wave interactions, where techniques of singular perturbation and statistical physics are employed. This study is, however, different from the classical theory in some points; we have reformulated the weak turbulence theory to be applicable to low-mode internal waves and also developed its numerical calculation method so that the effects of stratification profile and oceanic total depth can be taken into account. We have calculated the attenuation rate of low-mode baroclinic tidal waves interacting with the background Garrett-Munk internal wave field. The calculated results clearly show the rapid attenuation of baroclinic tidal energy at mid-latitudes, in agreement with the results from field observations and also show the zonal inhomogeneity of the attenuation rate caused by the density structures associated with the subtropical gyre. This study is expected

  5. Electron Paramagnetic Resonance: Elementary Theory and Practical Applications, Second Edition (John A. Weil and James R. Bolton)

    Science.gov (United States)

    Williams, Ffrancon

    2009-01-01

    , and other small molecules. Even more surprisingly, given the book's emphasis on solid-state applications, there is hardly any mention of the considerable body of work on radiation damage to biological molecules such as DNA. Chapters 10 through 13 cover Relaxation Times, Noncontinuous Excitation, Double Resonance Techniques, and Other Topics, respectively. New sections include those on Longitudinal Detection (10.6), Dynamic Nuclear Polarization (10.9), Bio-Oxygen Measurements (10.10), and Spin Coherence and Correlation (11.8). As before, chapter 13 lists comprehensive sets of literature references on a wide variety of 17 EPR-related topics, new additions being the introductory three-line Apologia (13.1) and almost three pages on Geologic/Mineralogic Systems and Selected Gems (13.10), the latter perhaps reflecting the particular interests of the senior author in EPR studies of minerals. Nine appendices (A through I) round out the book and these cover a wide range of background reference material. Discussions of mathematical operations (A) and quantum mechanics (B) are followed by an exact solution of the energy eigenvalues as well as the derivation of selection rules for the transitions of the hydrogen atom and related species (C). Appendix D is new and deals with the physical properties and magnetic resonance aspects of photons. This is followed by discussions of instrumentation (E) and experimental considerations (F). Finally, there are listings of the main EPR-related books and chapters (G); fundamental constants, conversion factors, and tables of atomic hyperfine constants (H); and a comprehensive 11-page glossary of symbols (I). Altogether these appendices provide an invaluable summary of the theoretical foundations of EPR as well as a mine of readily accessible information and key data. On the back cover, the authors claim to have brought this popular text up to date and that it provides a basic understanding of the underlying theory, fundamentals, and

  6. Day of Arts Philanthropy

    DEFF Research Database (Denmark)

    Lunde Jørgensen, Ida

    For the Day of Arts Philanthropy I will reflect on the instrumentalisation of art support in Denmark based on the findings from my thesis work (Jørgensen, 2016) investigating the underlyinglegitimations and institutional logics of two of the most significant foundations supporting visual art......, in Denmark, the private New Carlsberg Foundation and public Danish Arts Foundation.Drawing inspiration from neo-institutional theory (Friedland & Alford, 1991) and French pragmatic sociology (Boltanski & Thévenot, 2006), the thesis identifies the most central logics of legitimationunderlying art support......; the industrial, market, inspired, family, renown, civic, projective, emotional and temporal. The most prominent and consistently invoked instrumentalisations identified are theprofessional (industrial), artistic (inspired) and civic purposes of art support. The thesis shows that the instrumentalisations invoked...

  7. Unipacs: A Language Arts Curriculum Theory, Abstractions, Statements in Context, and Language Change; And Instructional Packets: Symbol-Referent, Denotation and Connotation, Appropriateness, Dialect, Occasion, and Form and Media.

    Science.gov (United States)

    Madison Public Schools, WI.

    Based on the belief that the most appropriate focus of a language arts curriculum is the process and content of communication, these several unipacs (instructional packets) explore some essential elements of communication which should be incorporated into a curricular theory: (1) abstraction , which is the assertion that words may be classified as…

  8. Neuroaesthetic Resonance

    DEFF Research Database (Denmark)

    Brooks, Anthony Lewis

    2013-01-01

    Neuroaesthetic Resonance emerged from a mature body of patient- centered gesture-control research investigating non-formal rehabilitation via ICT-enhanced-Art to question ‘Aesthetic Resonance’. Motivating participation, ludic engagement, and augmenting physical motion in non-formal (fun) treatment...... sessions are achieved via adaptive action-analyzed activities. These interactive virtual environments are designed to empower patients’ creative and/or playful expressions via digital feedback stimuli. Unconscious self- pushing of limits result from innate distractive mechanisms offered by the alternative...... the unencumbered motion-to-computer-generated activities - ‘Music Making’, ‘Painting’, ‘Robotic’ and ‘Video Game’ control. A focus of this position paper is to highlight how Aesthetic Resonance, in this context, relates to the growing body of research on Neuroaesthetics to evolve Neuroaesthetic Resonance....

  9. Medical Art Therapy

    Directory of Open Access Journals (Sweden)

    Birgul Aydin

    2012-03-01

    Full Text Available Art therapy is a form of expressive therapy that uses art materials. Art therapy combines traditional psychotherapeutic theories and techniques with an understanding of the psychological aspects of the creative process, especially the affective properties of the different art materials. Medical art therapy has been defined as the clinical application of art expression and imagery with individuals who are physically ill, experiencing physical trauma or undergoing invasive or aggressive medical procedures such as surgery or chemotherapy and is considered as a form of complementary or integrative medicine. Several studies have shown that patients with physical illness benefit from medical art therapy in different aspects. Unlike other therapies, art therapy can take the patients away from their illness for a while by means of creative activities during sessions, can make them forget the illness or lost abilities. Art therapy leads to re-experiencing normality and personal power even with short creative activity sessions. In this article definition, influence and necessity of medical art therapy are briefly reviewed.

  10. Elementary particle theory

    International Nuclear Information System (INIS)

    Marciano, W.J.

    1984-12-01

    The present state of the art in elementary particle theory is reviewed. Topics include quantum electrodynamics, weak interactions, electroweak unification, quantum chromodynamics, and grand unified theories. 113 references

  11. Resonant-convergent PCM response theory for the calculation of second harmonic generation in makaluvamines A-V: pyrroloiminoquinone marine natural products from poriferans of genus Zyzzya.

    Science.gov (United States)

    Milne, Bruce F; Norman, Patrick

    2015-05-28

    The first-order hyperpolarizability, β, has been calculated for a group of marine natural products, the makaluvamines. These compounds possess a common cationic pyrroloiminoquinone structure that is substituted to varying degrees. Calculations at the MP2 level indicate that makaluvamines possessing phenolic side chains conjugated with the pyrroloiminoquinone moiety display large β values, while breaking this conjugation leads to a dramatic decrease in the calculated hyperpolarizability. This is consistent with a charge-transfer donor-π-acceptor (D-π-A) structure type, characteristic of nonlinear optical chromophores. Dynamic hyperpolarizabilities calculated using resonance-convergent time-dependent density functional theory coupled to polarizable continuum model (PCM) solvation suggest that significant resonance enhancement effects can be expected for incident radiation with wavelengths around 800 nm. The results of the current work suggest that the pyrroloiminoquinone moiety represents a potentially useful new chromophore subunit, in particular for the development of molecular probes for biological imaging. The introduction of solvent-solute interactions in the theory is conventionally made in a density matrix formalism, and the present work will provide detailed account of the approximations that need to be introduced in wave function theory and our program implementation. The program implementation as such is achieved by a mere combination of existing modules from previous developments, and it is here only briefly reviewed.

  12. Theory of the effect of third-harmonic generation on three-photon resonantly enhanced multiphoton ionization in focused beams

    International Nuclear Information System (INIS)

    Payne, M.G.; Garrett, W.R.

    1983-01-01

    Multiphoton ionization in the region near a three-photon resonance is treated for focused, plane-polarized Gaussian beams with diffraction-limited beam divergence. In this situation, a third-harmonic field is generated within the laser beam. At, and very near, three-photon resonance the driving rate for the upper-state probability amplitude due to one-photon absorption of third-harmonic light becomes nearly equal to the corresponding three-photon rate due to the laser field, but these effects are 180 0 out of phase. As a consequence of this cancellation between two pumping terms, the three-photon resonance line essentially disappears at moderate concentrations and the observed ionization has a line shape that is close to the phase-matching curve for third-harmonic generation. The ionization signal, near but not on the resonance, is due almost entirely to absorption of third-harmonic photons plus other laser photons; three-photon resonantly enhanced multiphoton ionization by the laser is much weaker. This is particularly true on the blue side of the three-photon resonance at detunings where phase matching occurs. The problem is treated quite generally with predictions of the full line shape for n-photon ionization and third-harmonic light generation near three-photon resonance, including the rather strong influences of positively dispersive buffer gases. We also show that the cancellation between the one-photon and the three-photon process is partially spoiled in the presence of a counterpropagating beam at the same frequency

  13. Laterality in Metaphor Processing: Lack of Evidence from Functional Magnetic Resonance Imaging for the Right Hemisphere Theory

    Science.gov (United States)

    Rapp, Alexander M.; Leube, Dirk T.; Erb, Michael; Grodd, Wolfgang; Kircher, Tilo T. J.

    2007-01-01

    We investigated processing of metaphoric sentences using event-related functional magnetic resonance imaging (fMRI). Seventeen healthy subjects (6 female, 11 male) read 60 novel short German sentence pairs with either metaphoric or literal meaning and performed two different tasks: judging the metaphoric content and judging whether the sentence…

  14. Sound Art Situations

    DEFF Research Database (Denmark)

    Krogh Groth, Sanne; Samson, Kristine

    2017-01-01

    and combine theories from several fields. Aspects of sound art studies, performance studies and contemporary art studies are presented in order to theoretically explore the very diverse dimensions of the two sound art pieces: Visual, auditory, performative, social, spatial and durational dimensions become......This article is an analysis of two sound art performances that took place June 2015 in outdoor public spaces in the social housing area Urbanplanen in Copenhagen, Denmark. The two performances were On the production of a poor acoustics by Brandon LaBelle and Green Interactive Biofeedback...... Environments (GIBE) by Jeremy Woodruff. In order to investigate the complex situation that arises when sound art is staged in such contexts, the authors of this article suggest exploring the events through approaching them as ‘situations’ (Doherty 2009). With this approach it becomes possible to engage...

  15. Quantum mechanical resonances

    International Nuclear Information System (INIS)

    Cisneros S, A.; McIntosh, H.V.

    1982-01-01

    A discussion of the nature of quantum mechanical resonances is presented from the point of view of the spectral theory of operators. In the case of Bohr-Feshbach resonances, graphs are presented to illustrate the theory showing the decay of a doubly excited metastable state and the excitation of the resonance by an incident particle with proper energy. A characterization of resonances is given as well as a procedure to determine widths using the spectral density function. A sufficient condition is given for the validity of the Breit-Wigner formula for Bohr-Feshbach resonances. (author)

  16. The Lesbian Art Project.

    Science.gov (United States)

    Klein, Jennie

    2010-01-01

    Critics and artists influenced by the tenets of queer theory have dismissed much of the artwork made in the 1970s from a lesbian feminist perspective. The result has been very little being known or written about this pioneering work. This article is concerned with exploring an often overlooked aspect of lesbian art history: the activities and events associated with the Lesbian Art Project (LAP) founded by Terry Wolverton and Arlene Raven at the Woman's Building in Los Angeles. I argue that what is most significant about the LAP is the way in which the participants articulated lesbian identity and lesbian community through performance, art making, and writing.

  17. Indigenous Australian art in intercultural contact zones

    Directory of Open Access Journals (Sweden)

    Eleonore Wildburger

    2009-06-01

    Full Text Available This article comments on Indigenous Australian art from an intercultural perspective. The painting Bush Tomato Dreaming (1998, by the Anmatyerre artist Lucy Ngwarai Kunoth serves as model case for my argument that art expresses existential social knowledge. In consequence, I will argue that social theory and art theory together provide tools for intercultural understanding and competence.

  18. Linear theory of microwave absortion in fusion plasmas. A study of the electron cyclotron resonance and its particularization to a helical axis device for magnetic confinement

    International Nuclear Information System (INIS)

    Castejon M, F.

    1989-01-01

    The study of the Linear Theory microwave propagation and absorption in the the frequency range of electron cyclotron resonance, in a magnetized plasma, is developed. This study is particularized to the flexible heliac TJ-II, whose main characteristics are dsetailed in a memory chapter, as an interesting case example for its peculiar magnetic configuration. As a preliminary phase, a cold plasma model is useds to analyze the resonance accessibility and the approximated density limits which will be obtainable in each electron cyclotron resonance harmonic. This analysis was used to find the suitable positions for the microwave injection in TJ-II. An analytical weakly relativistic model for the dielectric tensor is developed, valid for oblique propagation, that takes account of the effect of superthermal electrons. Second order Larmor radius effects are included, so that the Quasi-Electrostatic branch of X mode can be studied. A numerical study is then presented on the absorption properties of TJ-II. Since the TJ-II geometry is complex and its magnetic field distribution is very different from that of a tokamak, ray tracing calculations are necessary to consider refraction effects. The ray tracing codse RAYS, developed in the Oak Ridge National Laboratory (U.S.A.), was take and adapted to the helical magnetic configuration of the TJ-II. The absorption model described above was then included in RAYS. For completeness, an introduction to the Quasi Linear Theory, natural prolongation of this work, is included at the end of the memory, ands the effects of taking into account the quasi linear evolution of the distribution function are described. (Author)

  19. Art Forms.

    Science.gov (United States)

    Hoekstra, Joel

    2002-01-01

    Describes the Fine Arts Interdisciplinary Resource (FAIR) Arts Middle School in Crystal, Minnesota, an award-winning school building that the architects hope will create a more conducive learning environment. Includes photographs and floor plans. (EV)

  20. Application of P-wave Hybrid Theory to the Scattering of Electrons from He+ and Resonances in He and H ion

    Science.gov (United States)

    Bhatia, A. K.

    2012-01-01

    The P-wave hybrid theory of electron-hydrogen elastic scattering [Phys. Rev. A 85, 052708 (2012)] is applied to the P-wave scattering from He ion. In this method, both short-range and long-range correlations are included in the Schroedinger equation at the same time, by using a combination of a modified method of polarized orbitals and the optical potential formalism. The short-correlation functions are of Hylleraas type. It is found that the phase shifts are not significantly affected by the modification of the target function by a method similar to the method of polarized orbitals and they are close to the phase shifts calculated earlier by Bhatia [Phys. Rev. A 69, 032714 (2004)]. This indicates that the correlation function is general enough to include the target distortion (polarization) in the presence of the incident electron. The important fact is that in the present calculation, to obtain similar results only a 20-term correlation function is needed in the wave function compared to the 220- term wave function required in the above-mentioned calculation. Results for the phase shifts, obtained in the present hybrid formalism, are rigorous lower bounds to the exact phase shifts. The lowest P-wave resonances in He atom and hydrogen ion have been calculated and compared with the results obtained using the Feshbach projection operator formalism [Phys. Rev. A, 11, 2018 (1975)]. It is concluded that accurate resonance parameters can be obtained by the present method, which has the advantage of including corrections due to neighboring resonances, bound states and the continuum in which these resonance are embedded.

  1. MIRANDA - a module based on multiregion resonance theory for generating cross sections within the AUS neutronics code system

    International Nuclear Information System (INIS)

    Robinson, G.S.

    1985-12-01

    MIRANDA is the cross-section generation module of the AUS neutronics code system used to prepare multigroup cross-section data which are pertinent to a particular study from a general purpose multigroup library of cross sections. Libraries have been prepared from ENDF/B which are suitable for thermal and fast fission reactors and for fusion blanket studies. The libraries include temperature dependent data, resonance cross sections represented by subgroup parameters and may contain photon as well as neutron data. The MIRANDA module includes a multiregion resonance calculation in slab, cylinder or cluster geometry, a homogeneous B L flux solution, and a group condensation facility. This report documents the modifications to an earlier version of MIRANDA and provides a complete user's manual

  2. Theory of Correlated Pairs of Electrons Oscillating in Resonant Quantum States to Reach the Critical Temperature in a Metal

    OpenAIRE

    Aroche, Raúl Riera; Rosas-Cabrera, Rodrigo Arturo; Burgos, Rodrigo Arturo Rosas; Betancourt-Riera, René; Betancourt-Riera, Ricardo

    2017-01-01

    The formation of Correlated Electron Pairs Oscillating around the Fermi level in Resonant Quantum States (CEPO-RQS), when a metal is cooled to its critical temperature T=Tc, is studied. The necessary conditions for the existence of CEPO-RQS are analyzed. The participation of electron-electron interaction screened by an electron dielectric constant of the form proposed by Thomas Fermi is considered and a physical meaning for the electron-phonon-electron interaction in the formation of the CEPO...

  3. Rock Art

    Science.gov (United States)

    Henn, Cynthia A.

    2004-01-01

    There are many interpretations for the symbols that are seen in rock art, but no decoding key has ever been discovered. This article describes one classroom's experiences with a lesson on rock art--making their rock art and developing their own personal symbols. This lesson allowed for creativity, while giving an opportunity for integration…

  4. Nature of isomerism of solid isothiourea salts, inhibitors of nitric oxide synthases, as studied by 1H-14N nuclear quadrupole double resonance, X-ray, and density functional theory/quantum theory of atoms in molecules.

    Science.gov (United States)

    Latosińska, J N; Latosińska, M; Seliger, J; Žagar, V; Maurin, J K; Kazimierczuk, Z

    2012-02-09

    Isothioureas, inhibitors of nitric oxide synthases, have been studied experimentally in solid state by nuclear quadrupole double resonance (NQDR) and X-ray methods and theoretically by the quantum theory of atoms in molecules/density functional theory. Resonance frequencies on (14)N have been detected and assigned to particular nitrogen sites in each molecule. The crystal packings of (S)-3,4-dichlorobenzyl-N-methylisothiouronium chloride with the disordered chlorine positions in benzene ring and (S)-butyloisothiouronium bromide have been resolved in X-ray diffraction studies. (14)N NQDR spectra have been found good indicators of isomer type and strength of intra- or intermolecular N-H···X (X = Cl, Br) interactions. From among all salts studied, only for (S)-2,3,4,5,6-pentabromobenzylisothiouronium chloride are both nitrogen sites equivalent, which has been explained by the slow exchange. This unique structural feature can be a key factor in the high biological activity of (S)-2,3,4,5,6-pentabromobenzylisothiouronium salts.

  5. Advances in magnetic resonance 10

    CERN Document Server

    Waugh, John S

    2013-01-01

    Advances in Magnetic Resonance, Volume 10, presents a variety of contributions to the theory and practice of magnetic resonance. The book contains three chapters that examine superoperators in magnetic resonance; ultrasonically modulated paramagnetic resonance; and the utility of electron paramagnetic resonance (EPR) and electron-nuclear double-resonance (ENDOR) techniques for studying low-frequency modes of atomic fluctuations and their significance for understanding the mechanism of structural phase transitions in solids.

  6. The Effect of Active Learning Techniques on Class Teacher Candidates' Success Rates and Attitudes toward Their Museum Theory and Application Unit in Their Visual Arts Course

    Science.gov (United States)

    Dilmac, Oguz

    2016-01-01

    The purpose of this study is to examine the effect that using active learning techniques during museum and gallery visits has on teacher candidates' academic success rates in and attitudes toward their Visual Arts Course. In this study, the importance and requirement of education to take place in museums and art galleries is emphasized. The…

  7. Art Rocks with Rock Art!

    Science.gov (United States)

    Bickett, Marianne

    2011-01-01

    This article discusses rock art which was the very first "art." Rock art, such as the images created on the stone surfaces of the caves of Lascaux and Altimira, is the true origin of the canvas, paintbrush, and painting media. For there, within caverns deep in the earth, the first artists mixed animal fat, urine, and saliva with powdered minerals…

  8. Fourier photospectroscopy of Xe-C{sub 60} through a Xe 4d resonance window: theory versus recent experiment

    Energy Technology Data Exchange (ETDEWEB)

    Patel, Aakash B; Chakraborty, Himadri S, E-mail: himadri@nwmissouri.edu [Center for Innovation and Entrepreneurship, Department of Chemistry and Physics, Northwest Missouri State University, Maryville, Missouri 64468 (United States)

    2011-10-14

    The photoionization cross section of endohedral Xe-C{sub 60} over a Xe 4d giant resonance energy region, calculated in the time-dependent local density approximation, is compared with recent measurements (Kilcoyne et al 2010 Phys. Rev. Lett. 105 213001). An analysis based on the Fourier transforms of oscillatory cross sections is performed to derive a number of inherent similarities between the prediction and the data, including a large beating-type oscillation and several others of intermediate size. Results stress the need for more accurate measurements to access the wealth of information about the geometry of the system. (fast track communication)

  9. Fourier photospectroscopy of Xe-C60 through a Xe 4d resonance window: theory versus recent experiment

    International Nuclear Information System (INIS)

    Patel, Aakash B; Chakraborty, Himadri S

    2011-01-01

    The photoionization cross section of endohedral Xe-C 60 over a Xe 4d giant resonance energy region, calculated in the time-dependent local density approximation, is compared with recent measurements (Kilcoyne et al 2010 Phys. Rev. Lett. 105 213001). An analysis based on the Fourier transforms of oscillatory cross sections is performed to derive a number of inherent similarities between the prediction and the data, including a large beating-type oscillation and several others of intermediate size. Results stress the need for more accurate measurements to access the wealth of information about the geometry of the system. (fast track communication)

  10. Tides in a body librating about a spin-orbit resonance: generalisation of the Darwin-Kaula theory

    Science.gov (United States)

    Frouard, Julien; Efroimsky, Michael

    2017-09-01

    The Darwin-Kaula theory of bodily tides is intended for celestial bodies rotating without libration. We demonstrate that this theory, in its customary form, is inapplicable to a librating body. Specifically, in the presence of libration in longitude, the actual spectrum of Fourier tidal modes differs from the conventional spectrum rendered by the Darwin-Kaula theory for a nonlibrating celestial object. This necessitates derivation of formulae for the tidal torque and the tidal heating rate, that are applicable under libration. We derive the tidal spectrum for longitudinal forced libration with one and two main frequencies, generalisation to more main frequencies being straightforward. (By main frequencies we understand those emerging due to the triaxiality of the librating body.) Separately, we consider a case of free libration at one frequency (once again, generalisation to more frequencies being straightforward). We also calculate the tidal torque. This torque provides correction to the triaxiality-caused physical libration. Our theory is not self-consistent: we assume that the tidal torque is much smaller than the permanent-triaxiality-caused torque, so the additional libration due to tides is much weaker than the main libration due to the permanent triaxiality. Finally, we calculate the tidal dissipation rate in a body experiencing forced libration at the main mode, or free libration at one frequency, or superimposed forced and free librations.

  11. Art for reward's sake: visual art recruits the ventral striatum.

    Science.gov (United States)

    Lacey, Simon; Hagtvedt, Henrik; Patrick, Vanessa M; Anderson, Amy; Stilla, Randall; Deshpande, Gopikrishna; Hu, Xiaoping; Sato, João R; Reddy, Srinivas; Sathian, K

    2011-03-01

    A recent study showed that people evaluate products more positively when they are physically associated with art images than similar non-art images. Neuroimaging studies of visual art have investigated artistic style and esthetic preference but not brain responses attributable specifically to the artistic status of images. Here we tested the hypothesis that the artistic status of images engages reward circuitry, using event-related functional magnetic resonance imaging (fMRI) during viewing of art and non-art images matched for content. Subjects made animacy judgments in response to each image. Relative to non-art images, art images activated, on both subject- and item-wise analyses, reward-related regions: the ventral striatum, hypothalamus and orbitofrontal cortex. Neither response times nor ratings of familiarity or esthetic preference for art images correlated significantly with activity that was selective for art images, suggesting that these variables were not responsible for the art-selective activations. Investigation of effective connectivity, using time-varying, wavelet-based, correlation-purged Granger causality analyses, further showed that the ventral striatum was driven by visual cortical regions when viewing art images but not non-art images, and was not driven by regions that correlated with esthetic preference for either art or non-art images. These findings are consistent with our hypothesis, leading us to propose that the appeal of visual art involves activation of reward circuitry based on artistic status alone and independently of its hedonic value. Copyright © 2010 Elsevier Inc. All rights reserved.

  12. Theses. Beam studies for the CERN antiproton decelerator and a new interpretation of the resonance theory for betatron motion

    Energy Technology Data Exchange (ETDEWEB)

    De Ninno, G

    1999-07-01

    The two parts of the thesis are a mission-oriented task devoted to solve some practical problems of the Antiproton Decelerator (AD) project at CERN, and a theoretical study leading to a new method for representing and compensating betatron resonances. The AD is a new machine (at the moment under commissioning at CERN) that will allow the collection and the deceleration of an antiproton beam from 3.5 GeV/c down to 100 MeV/c (the momentum favoured for the foreseen physics experiments). The need to employ the AD magnets over a wide range required a careful study of their characteristics. The presence of a solenoid inside the AD electron cooling device generates linear coupling between the transverse degrees of freedom of the single-particle motion. Coupling can lead to operational problems and therefore a compensation scheme had tobe designed. The long-standing problem has been solved of how to establish a relationship between the two standard methods for dealing with linear coupling: the matrix approach and the Hamiltonian approach. The bridge was built by including in the Hamiltonian approach in the high frequency part of the perturbative Hamiltonian due to coupling. The procedure was generalised to the nonlinear case and, a new method was proposed for dealing both with linear and nonlinear resonances. (author)

  13. Theses. Beam studies for the CERN antiproton decelerator and a new interpretation of the resonance theory for betatron motion

    International Nuclear Information System (INIS)

    De Ninno, G.

    1999-01-01

    The two parts of the thesis are a mission-oriented task devoted to solve some practical problems of the Antiproton Decelerator (AD) project at CERN, and a theoretical study leading to a new method for representing and compensating betatron resonances. The AD is a new machine (at the moment under commissioning at CERN) that will allow the collection and the deceleration of an antiproton beam from 3.5 GeV/c down to 100 MeV/c (the momentum favoured for the foreseen physics experiments). The need to employ the AD magnets over a wide range required a careful study of their characteristics. The presence of a solenoid inside the AD electron cooling device generates linear coupling between the transverse degrees of freedom of the single-particle motion. Coupling can lead to operational problems and therefore a compensation scheme had to be designed. The long-standing problem has been solved of how to establish a relationship between the two standard methods for dealing with linear coupling: the matrix approach and the Hamiltonian approach. The bridge was built by including in the Hamiltonian approach in the high frequency part of the perturbative Hamiltonian due to coupling. The procedure was generalised to the nonlinear case and, a new method was proposed for dealing both with linear and nonlinear resonances. (author)

  14. Art Engineering and Kinetic Art

    Directory of Open Access Journals (Sweden)

    Barış Yılmaz

    2014-12-01

    Full Text Available Performing an art, either by painting or by sculpturing, requires to be interdisciplinary. When an artist creates his/her work of art, the process he/she realizes is supported by different engineering disciplines. Therefore, especially modern artists need to understand engineering science and this results in transforming artists into engineers. Opportunities provided by technology and science enable artists to expand his/her vision and to improve his/her works. Especially kinetic art has become an approach that combines art with engineering. Kinetic art, which is nourished with varied disciplines, is an excellent example to prove that art is interdisciplinary and to show the relationship between artist/art and engineering.

  15. Reaction Coordinate Leading to H2 Production in [FeFe]-Hydrogenase Identified by Nuclear Resonance Vibrational Spectroscopy and Density Functional Theory.

    Science.gov (United States)

    Pelmenschikov, Vladimir; Birrell, James A; Pham, Cindy C; Mishra, Nakul; Wang, Hongxin; Sommer, Constanze; Reijerse, Edward; Richers, Casseday P; Tamasaku, Kenji; Yoda, Yoshitaka; Rauchfuss, Thomas B; Lubitz, Wolfgang; Cramer, Stephen P

    2017-11-22

    [FeFe]-hydrogenases are metalloenzymes that reversibly reduce protons to molecular hydrogen at exceptionally high rates. We have characterized the catalytically competent hydride state (H hyd ) in the [FeFe]-hydrogenases from both Chlamydomonas reinhardtii and Desulfovibrio desulfuricans using 57 Fe nuclear resonance vibrational spectroscopy (NRVS) and density functional theory (DFT). H/D exchange identified two Fe-H bending modes originating from the binuclear iron cofactor. DFT calculations show that these spectral features result from an iron-bound terminal hydride, and the Fe-H vibrational frequencies being highly dependent on interactions between the amine base of the catalytic cofactor with both hydride and the conserved cysteine terminating the proton transfer chain to the active site. The results indicate that H hyd is the catalytic state one step prior to H 2 formation. The observed vibrational spectrum, therefore, provides mechanistic insight into the reaction coordinate for H 2 bond formation by [FeFe]-hydrogenases.

  16. Installation Art

    DEFF Research Database (Denmark)

    Petersen, Anne Ring

    Despite its large and growing popularity – to say nothing of its near-ubiquity in the world’s art scenes and international exhibitions of contemporary art –installation art remains a form whose artistic vocabulary and conceptual basis have rarely been subjected to thorough critical examination....... In Installation Art: Between Image and Stage, Anne Ring Petersen aims to change that. She begins by exploring how installation art developed into an interdisciplinary genre in the 1960s, and how its intertwining of the visual and the performative has acted as a catalyst for the generation of new artistic...... phenomena. It investigates how it became one of today’s most widely used art forms, increasingly expanding into consumer, popular and urban cultures, where installation’s often spectacular appearance ensures that it meets contemporary demands for sense-provoking and immersive cultural experiences. The main...

  17. Installation Art

    DEFF Research Database (Denmark)

    Petersen, Anne Ring

    . In Installation Art: Between Image and Stage, Anne Ring Petersen aims to change that. She begins by exploring how installation art developed into an interdisciplinary genre in the 1960s, and how its intertwining of the visual and the performative has acted as a catalyst for the generation of new artistic......Despite its large and growing popularity – to say nothing of its near-ubiquity in the world’s art scenes and international exhibitions of contemporary art –installation art remains a form whose artistic vocabulary and conceptual basis have rarely been subjected to thorough critical examination...... phenomena. It investigates how it became one of today’s most widely used art forms, increasingly expanding into consumer, popular and urban cultures, where installation’s often spectacular appearance ensures that it meets contemporary demands for sense-provoking and immersive cultural experiences. The main...

  18. Theory for cross effect dynamic nuclear polarization under magic-angle spinning in solid state nuclear magnetic resonance: the importance of level crossings.

    Science.gov (United States)

    Thurber, Kent R; Tycko, Robert

    2012-08-28

    We present theoretical calculations of dynamic nuclear polarization (DNP) due to the cross effect in nuclear magnetic resonance under magic-angle spinning (MAS). Using a three-spin model (two electrons and one nucleus), cross effect DNP with MAS for electron spins with a large g-anisotropy can be seen as a series of spin transitions at avoided crossings of the energy levels, with varying degrees of adiabaticity. If the electron spin-lattice relaxation time T(1e) is large relative to the MAS rotation period, the cross effect can happen as two separate events: (i) partial saturation of one electron spin by the applied microwaves as one electron spin resonance (ESR) frequency crosses the microwave frequency and (ii) flip of all three spins, when the difference of the two ESR frequencies crosses the nuclear frequency, which transfers polarization to the nuclear spin if the two electron spins have different polarizations. In addition, adiabatic level crossings at which the two ESR frequencies become equal serve to maintain non-uniform saturation across the ESR line. We present analytical results based on the Landau-Zener theory of adiabatic transitions, as well as numerical quantum mechanical calculations for the evolution of the time-dependent three-spin system. These calculations provide insight into the dependence of cross effect DNP on various experimental parameters, including MAS frequency, microwave field strength, spin relaxation rates, hyperfine and electron-electron dipole coupling strengths, and the nature of the biradical dopants.

  19. Asymptotic form factor of non-Abelian gauge theories, planar diagrammatics and complex poles as resonances in the analytic s-matrix

    International Nuclear Information System (INIS)

    Knight, D.W.

    1976-01-01

    Reasons are given for studying the form factor and a method for constructing all believed-to-be leading form factor diagrams in a certain class of non-Abelian gauge theories (NAGT's) in typical kinematic limits. The possibility that the form factor ''exponentiates'' in NAGT's (as it does in QED) is discussed. A method is given for constructing all 1CI planar diagrams (this is, all 1PI diagrams except those which separate upon cutting at a vertex) directly from one's heat--that is, without the need to refer to tables, et cetera. It is noted that the material is believed to be essentially completely original, that is, the technique for constructing all 1CI planar diagrams in an iterative fashion is completely new. Of course, one can construct them in an essentially random fashion, but this technique is slow and extremely error prone compared with the iterative technique given. The idea of associating an elastic resonance with a complex pole in the analytic scattering amplitude, T(E), is discussed. Calculations of the pole position and the residue of the Δ 33 resonance are given, along with an analysis of experimentally induced error in the pole position

  20. Art Theory or Political Philosophy?---Further Discussion on the Nature of Music Theory by Ji Kang%艺术理论抑或政治哲学?*--嵇康乐论的性质再探讨

    Institute of Scientific and Technical Information of China (English)

    杨杰

    2016-01-01

    学者多认为《声无哀乐论》是一篇艺术理论文献或者音乐美学文献,事实上它是一篇哲学文献。嵇康认为声音只有音阶节奏是否平和的体性,而没有哀乐的属性;哀乐是人的情感属性,平和的音乐只是宣导人本有的哀乐之情。他进一步认为音乐本身也没有德行、功用等“象”。他认为音乐是有教化作用的,首先要实行无为之政的良善政治,使得人心平和,产生平和之乐,二者相互涵养天下才会大治。与儒家以礼乐为主的乐教观不同,嵇康的乐教思想是以人心平和,从而实际上是以无为政治为首要目的的。因此嵇康的音乐理论最终指向的是乐教何以可能的政治哲学问题,《声论》是一篇政治哲学文献。%Most scholars regard No Funeral Music Theory as a literature about art theory or music aes‐thetics ,actually ,it is a literature about political philosophy .Ji Kang thinks that music only has the harmonious melody ,and has nothing to do with the human emotion related to political situation and other circumstances .The point is that grief and joy is the attribute of human emotion ,and the peace‐ful music only a tool to express this emotion .Furthermore ,he put forward that the music itself doesn't have the properties about virtue or function .He held the opinion that music had the function of in‐doctrination ,and we must carry out inaction in governance ,which drives everyone's emotion to a calm ,thus peaceful music being generated ,and the two sides promoting each other can eventually produce a well governed society .Different from Confucian view about music education ,Ji Kang regar‐ded inaction in governance is more important than music education .Therefore ,the finally aim of Ji kang's music theory is the possibility of music education ,which is a political problem ,as a conse‐quence ,No Funeral Music Theory is a literature about political philosophy .

  1. (Small) Resonant non-Gaussianities: Signatures of a Discrete Shift Symmetry in the Effective Field Theory of Inflation

    Energy Technology Data Exchange (ETDEWEB)

    Behbahani, Siavosh R.; /SLAC /Stanford U., Phys. Dept. /Boston U.; Dymarsky, Anatoly; /Princeton, Inst. Advanced Study; Mirbabayi, Mehrdad; /New York U., CCPP /New York U.; Senatore, Leonardo; /Stanford U., Phys. Dept. /KIPAC, Menlo Park

    2012-06-06

    We apply the Effective Field Theory of Inflation to study the case where the continuous shift symmetry of the Goldstone boson {pi} is softly broken to a discrete subgroup. This case includes and generalizes recently proposed String Theory inspired models of Inflation based on Axion Monodromy. The models we study have the property that the 2-point function oscillates as a function of the wavenumber, leading to oscillations in the CMB power spectrum. The non-linear realization of time diffeomorphisms induces some self-interactions for the Goldstone boson that lead to a peculiar non-Gaussianity whose shape oscillates as a function of the wavenumber. We find that in the regime of validity of the effective theory, the oscillatory signal contained in the n-point correlation functions, with n > 2, is smaller than the one contained in the 2-point function, implying that the signature of oscillations, if ever detected, will be easier to find first in the 2-point function, and only then in the higher order correlation functions. Still the signal contained in higher-order correlation functions, that we study here in generality, could be detected at a subleading level, providing a very compelling consistency check for an approximate discrete shift symmetry being realized during inflation.

  2. Folkloric Art in Egyptian Schools.

    Science.gov (United States)

    Osman, Siham

    1983-01-01

    Theories in art education with a western origin have been applied in Egypt to support the revival of folkloric art. There are three important phases in the teaching of a unit on applique, a decorative craft dating back to the earliest Egyptian history. (AM)

  3. Shadow art

    KAUST Repository

    Mitra, Niloy J.; Pauly, Mark

    2009-01-01

    "To them, I said, the truth would be literally nothing but the shadows of the images." - Plato, The Republic Shadow art is a unique form of sculptural art where the 2D shadows cast by a 3D sculpture are essential for the artistic effect. We

  4. Art Markets

    NARCIS (Netherlands)

    P.A. Arora (Payal); F.R.R. Vermeylen (Filip)

    2013-01-01

    textabstractThe advent of digitization has had a profound impact on the art market and its institutions. In this chapter, we focus on the market for visual arts as it finds its expression in (among other) paintings, prints, drawings, photographs, sculpture and the like. These artistic disciplines

  5. Art Rocks!

    Science.gov (United States)

    Chapin, Erika

    2008-01-01

    Though people may like different types of music, everyone likes music. In middle school, music and art are of key importance for students to express and define what kind of person they are. In this article, the author presents an art project where students are asked to create their own guitars. (Contains 1 resource and 3 online resources.)

  6. Indigenous Art

    Science.gov (United States)

    Hu, Helen

    2012-01-01

    Linda Lomahaftewa, a noted painter, has taught at much bigger places than the Institute of American Indian Arts (IAIA). But Lomahaftewa, who is Hopi-Choctaw, and others on the faculty of IAIA are intensely devoted to the mission of this small but unique school. IAIA--the nation's only four-year fine arts institution devoted to American Indian and…

  7. Toward the Prediction of Water Exchange Rates in Magnetic Resonance Imaging Contrast Agents: A Density Functional Theory Study.

    Science.gov (United States)

    Regueiro-Figueroa, Martín; Platas-Iglesias, Carlos

    2015-06-18

    We present a theoretical investigation of Gd-Owater bonds in different complexes relevant as contrast agents in magnetic resonance imaging (MRI). The analysis of the Ln-Owater distances, electron density (ρBCP), and electron localization function (ELF) at the bond critical points of [Ln(DOTA)(H2O)](-) and [Ln(DTPA-BMA)(H2O)] indicates that the strength of the Ln-Owater bonds follows the order DTPA-BMA > DOTA (M isomer) > DOTA (m isomer). The ELF values decrease along the 4f period as the Ln-Owater bonds get shorter, in line with the labile capping bond phenomenon. Extension of these calculations to other Gd(3+) complexes allowed us to correlate the experimentally observed water exchange rates and the calculated ρBCP and ELF values. The water exchange reaction becomes faster as the Gd-Owater bonds are weakened, which is reflected in longer bond distances and lower values of ρBCP and ELF. DKH2 calculations show that the two coordinated water molecules may also have significantly different (17)O hyperfine coupling constants (HFCCs).

  8. From the art of war to fight with art

    DEFF Research Database (Denmark)

    Clausen, Lars

    2015-01-01

    systems theory with art. Martin Nore through his visual art develops and activistic form of system theory, where therapeutic intervention turns into societal self-therapy for broken meaning horizons and unintended consequences of the current massage of the form peace/war. The activistic systems...... theoretical art, the "artivistic" perspective developed from the broken minds of war experiences, diagnosed with Post-Traumatic Stress Disorder and Traumatic Brain Injury. Since then, it has broadened the perspective to demonstrate its capacity to work with the distinction between civil society and its...... outside. This is the fight with art, where the predominant selfdescriptions in western societies are questioned on their selflimitations and insufficient strategies of deparadoxation. In Martins art, the paradox of the structural coupling of body, mind and society as both distinct from each other...

  9. Contradictions in participatory public art

    DEFF Research Database (Denmark)

    Kortbek, Hjørdis Brandrup

    2018-01-01

    This article addresses the current focus within urban cultural policy on using art as a tool in urban development. Based on theories of participation, democracy and public art, the article sets out to investigate critically the concept of placemaking. The discussion is based on an analysis...... of the public art project, Placemaking that took place during 2015 in eight municipalities around Copenhagen in Denmark. I argue that, when used as a tool in urban development, participatory public art engenders contradictory encounters. These encounters challenge the cultural political effort to democratise...

  10. Microwave Resonators and Filters

    Science.gov (United States)

    2015-12-22

    1 Microwave Resonators and Filters Daniel E. Oates MIT Lincoln Laboratory 244 Wood St. Lexington, MA 02478 USA Email: oates@ll.mit.edu...explained in other chapters, the surface resistance of superconductors at microwave frequencies can be as much as three orders of magnitude lower than the...resonators and filters in the first edition of this handbook (Z.-Y. Shen 2003) discussed the then state of the art of microwave frequency applications

  11. 《孙子兵法》中的战略隐喻及其对战略理论的贡献%The Strategic Metaphor of The Art of War and Its Contribution to the Strategic Theory

    Institute of Scientific and Technical Information of China (English)

    纪洪波

    2011-01-01

    隐喻在战略管理理论发展和实证检验中具有重要意义。《孙子兵法》是中国古典战略理论的杰出代表,其在战略隐喻的设计与使用上,既有与西方战略隐喻共同的理论指向,又有其自身的特色与价值。在论述有关内容的基础上,揭示了中西方战略文化背景的差异,肯定了《孙子兵法》对战略思想发展的独特贡献。%Metaphor has a big significance in the development of strategic management theory and the empirical test. The Art of War is the outstanding representative of Chinese classical strategic theory having the common theory direction with western strategic metaphor with its own characteristics and value in terms of the design and use of strategic metaphor. On the basis of the discussion on some related content, the differences in the China- Western cultural background are revealed and the unique contribution of The Art of War to the development of strategic thinking confirmed.

  12. Arts Entrepreneurship

    DEFF Research Database (Denmark)

    Gartner, Bill

    2015-01-01

    Contribution to the opinion series “Perspectives” on arts entrepreneurship; how arts entrepreneurship is situated in relation to other disciplines or fields; what problems we are grappling with as scholars, practitioners, teachers, and artists; and what are the research questions we are attempting...... to answer individually or as a field. Under the headline “Perspectives on Arts Entrepreneurship, part 2”, are responses from: William B. Gartner, Professor of Entrepreneurship at Copenhagen Business School and California Lutheran University; Joseph Roberts, Director of the Coleman Fellows Program, Associate...

  13. Arte inolvidable

    OpenAIRE

    Iván Moratilla Pérez; Esther Gallego García; Francisco Javier Moreno Martínez

    2018-01-01

    La humanidad y el arte forman un matrimonio indisoluble, no es posible concebir la una sin el otro. Incluso antes de fabricar el primer instrumento musical, la humanidad ya cantaba; antes de emplear un lienzo, pintó sobre la pared de una cueva. Las manifestaciones creativas se dan invariablemente “en la riqueza y en la pobreza”, pero también “en la salud y en la enfermedad”. En este artículo introducimos al lector a la temática del arte y la demencia, destacando la capacidad creativa de los p...

  14. Controlling Parametric Resonance

    DEFF Research Database (Denmark)

    Galeazzi, Roberto; Pettersen, Kristin Ytterstad

    2012-01-01

    the authors review the conditions for the onset of parametric resonance, and propose a nonlinear control strategy in order to both induce the resonant oscillations and to stabilize the unstable motion. Lagrange’s theory is used to derive the dynamics of the system and input–output feedback linearization...

  15. La lectura literaria como arte de "performance": la teoria transaccional de Louise Rosenblatt y sus implicaciones pedagogicas (The Use of Literature as Performance Art: The Transactional Theory of Louise Rosenblatt and Its Pedagogical Implications).

    Science.gov (United States)

    Zoreda, Margaret Lee

    This paper focuses on the work that Louise Rosenblatt and her followers in the United States have done to improve the teaching and learning of literature at all educational levels. Although these researchers have focused almost exclusively on the use of literature in the native language, the paper uses transactional theory as a basis for teaching…

  16. Art & Alchemy

    DEFF Research Database (Denmark)

    Partly because of alchemy's dismissal from the Parnassus of rational sciences, the interplay between this esoteric knowledge and the visual arts is still a surprisingly neglected research area. This collection of articles covering the time span from the Late Middle Ages to the twentieth century...... intends, however, to challenge the current neglect. Areas on which its twelve authors cast new light include alchemical gender symbolism in Renaissance, Mannerist and modernist art, alchemical ideas of transformation in Italian fifteenth-century landscape imagery, Netherlandish seventeenth......-century portrayals of alchemists, and alchemy's tortured status as a forerunner of photography. Art and Alchemy indicates that alchemy indeed has several connections with art by examining some of the pictorial and literary books that disseminated alchemical symbols and ideas, delving into images, which in one way...

  17. Unforgettable art

    OpenAIRE

    Iván Moratilla Pérez; Esther Gallego García; Francisco Javier Moreno Martínez

    2018-01-01

    Humanity and Art make an indissoluble marriage, it is impossible to comprehend one without the other. Even before producing the first musical instrument, humanity already sang; before using a canvas, humans painted on the walls of a cave. Creative manifestations invariably take place in “poverty and wealth”, but also in “sickness and health”. In this article we introduce the reader to the subject of art and dementia, highlighting the creative potential of patients, and including examples of e...

  18. Art School

    OpenAIRE

    Lucas, Anna

    2015-01-01

    Art School is a body of research that focuses on the pedagogical environment and the conditions of creative thinking & material making. The outputs are films that embed reflexivity in their concept, process and form, further contextualised through International talks, events and curated screenings about Art School and the nature of artist’s process and pedagogy. The underlying research questions also address the significance of artist’s processes within the contemporary political and cultur...

  19. Video Games as Mass Art

    Directory of Open Access Journals (Sweden)

    Grant Tavinor

    2011-01-01

    Full Text Available Videogames are one of the most significant developments in the mass arts of recent times. In commercial terms, they are now among the most prominent of the mass arts worldwide. This commercial and cultural success does not exhaust the interest in videogames as a mass art phenomenon because games such as Grand Theft Auto IV and Fallout 3 are structurally radically different from previous forms of mass art. In particular, the ontology of videogames, the nature and identity of their works, and how they are instanced and evaluated is a departure from the familiar mass arts of film and popular music. This paper explores these differences in an attempt to fit videogames into a theory of mass art, but also to provide guidance on the issues of criticism and evaluation that surely follow from their ontological distinctiveness.

  20. Arts-in-Business

    DEFF Research Database (Denmark)

    Darsø, Lotte

    2002-01-01

    forth new learning opportunities. The goal is to map the field, to develop new theory and to share the learning with our partners and networks. This paper proposes a theoretical framework of four categories of Arts-in-Business: "Metaphors", "Capabilities", "Events", and "Products". The main idea......Innovative Research in Management. The 2nd European Academy of Management (EURAM) Conference, Stockholm (Sweden). 2002 Short description: This positioning paper proposes a theoretical framework of four categories of Arts-in-Business. The main idea is to examine cases in relation to this model...... and to identify interesting trajectories of learning. Abstract: The Arts are being applied in business settings in new ways that give rise to a research field in the making. Learning Lab Denmark wants to contribute to this emerging field by identifying, examining and analysing international cases that could bring...

  1. Neuronal correlates of theory of mind and empathy: a functional magnetic resonance imaging study in a nonverbal task.

    Science.gov (United States)

    Völlm, Birgit A; Taylor, Alexander N W; Richardson, Paul; Corcoran, Rhiannon; Stirling, John; McKie, Shane; Deakin, John F W; Elliott, Rebecca

    2006-01-01

    Theory of Mind (ToM), the ability to attribute mental states to others, and empathy, the ability to infer emotional experiences, are important processes in social cognition. Brain imaging studies in healthy subjects have described a brain system involving medial prefrontal cortex, superior temporal sulcus and temporal pole in ToM processing. Studies investigating networks associated with empathic responding also suggest involvement of temporal and frontal lobe regions. In this fMRI study, we used a cartoon task derived from Sarfati et al. (1997) [Sarfati, Y., Hardy-Bayle, M.C., Besche, C., Widlocher, D. 1997. Attribution of intentions to others in people with schizophrenia: a non-verbal exploration with comic strips. Schizophrenia Research 25, 199-209.]with both ToM and empathy stimuli in order to allow comparison of brain activations in these two processes. Results of 13 right-handed, healthy, male volunteers were included. Functional images were acquired using a 1.5 T Phillips Gyroscan. Our results confirmed that ToM and empathy stimuli are associated with overlapping but distinct neuronal networks. Common areas of activation included the medial prefrontal cortex, temporoparietal junction and temporal poles. Compared to the empathy condition, ToM stimuli revealed increased activations in lateral orbitofrontal cortex, middle frontal gyrus, cuneus and superior temporal gyrus. Empathy, on the other hand, was associated with enhanced activations of paracingulate, anterior and posterior cingulate and amygdala. We therefore suggest that ToM and empathy both rely on networks associated with making inferences about mental states of others. However, empathic responding requires the additional recruitment of networks involved in emotional processing. These results have implications for our understanding of disorders characterized by impairments of social cognition, such as autism and psychopathy.

  2. Tantalus, restraint theory, and the low-sacrifice diet: the art of reverse abstraction: 10th International Congress on Obesity; September 4, 2006; Sydney,Australia - Symposium: obesity management: adding art to the science, invited presentation.

    Science.gov (United States)

    Blair-West, George W

    2007-10-24

    This paper argues that clinicians face the unique artistic challenge of taking concrete pieces of data - scientific findings - and abstracting them into effective therapeutic interventions. Moreover, this abstraction has to be modified for different personality types. The process of therapeutic change and how it can be impeded by the traditional medical model are briefly explored. The doctor-patient dyadic treatment relationship, while appropriate and necessary for many medical interventions, can disavow the source of change when it comes to lifestyle conditions such as obesity. Restraint theory and its origins in Greek mythology are briefly reviewed and integrated with Bowlby's attachment theory as precepts in developing a psychologically based dietary approach. By retaining in people's diets foods they have a deep emotional attachment to, the low-sacrifice diet attempts to encourage caloric restriction in a way that does not trigger rebound overeating.

  3. Determination of Irreducible Water Saturation from nuclear magnetic resonance based on fractal theory — a case study of sandstone with complex pore structure

    Science.gov (United States)

    Peng, L.; Pan, H.; Ma, H.; Zhao, P.; Qin, R.; Deng, C.

    2017-12-01

    The irreducible water saturation (Swir) is a vital parameter for permeability prediction and original oil and gas estimation. However, the complex pore structure of the rocks makes the parameter difficult to be calculated from both laboratory and conventional well logging methods. In this study, an effective statistical method to predict Swir is derived directly from nuclear magnetic resonance (NMR) data based on fractal theory. The spectrum of transversal relaxation time (T2) is normally considered as an indicator of pore size distribution, and the micro- and meso-pore's fractal dimension in two specific range of T2 spectrum distribution are calculated. Based on the analysis of the fractal characteristics of 22 core samples, which were drilled from four boreholes of tight lithologic oil reservoirs of Ordos Basin in China, the positive correlation between Swir and porosity is derived. Afterwards a predicting model for Swir based on linear regressions of fractal dimensions is proposed. It reveals that the Swir is controlled by the pore size and the roughness of the pore. The reliability of this model is tested and an ideal consistency between predicted results and experimental data is found. This model is a reliable supplementary to predict the irreducible water saturation in the case that T2 cutoff value cannot be accurately determined.

  4. Assessment of amide I spectroscopic maps for a gas-phase peptide using IR-UV double-resonance spectroscopy and density functional theory calculations

    Energy Technology Data Exchange (ETDEWEB)

    Carr, J. K.; Roy, S.; Skinner, J. L. [Department of Chemistry and Theoretical Chemistry Institute, University of Wisconsin, Madison, Wisconsin 53706 (United States); Zabuga, A. V.; Rizzo, T. R. [Laboratoire de Chimie Physique Moleculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne (Switzerland)

    2014-06-14

    The spectroscopy of amide I vibrations has become a powerful tool for exploring protein structure and dynamics. To help with spectral interpretation, it is often useful to perform molecular dynamics (MD) simulations. To connect spectroscopic experiments to simulations in an efficient manner, several researchers have proposed “maps,” which relate observables in classical MD simulations to quantum spectroscopic variables. It can be difficult to discern whether errors in the theoretical results (compared to experiment) arise from inaccuracies in the MD trajectories or in the maps themselves. In this work, we evaluate spectroscopic maps independently from MD simulations by comparing experimental and theoretical spectra for a single conformation of the α-helical model peptide Ac-Phe-(Ala){sub 5}-Lys-H{sup +} in the gas phase. Conformation-specific experimental spectra are obtained for the unlabeled peptide and for several singly and doubly {sup 13}C-labeled variants using infrared-ultraviolet double-resonance spectroscopy, and these spectra are found to be well-modeled by density functional theory (DFT) calculations at the B3LYP/6-31G** level. We then compare DFT results for the deuterated and {sup 13}C{sup 18}O-labeled peptide with those from spectroscopic maps developed and used previously by the Skinner group. We find that the maps are typically accurate to within a few cm{sup −1} for both frequencies and couplings, having larger errors only for the frequencies of terminal amides.

  5. Assessment of amide I spectroscopic maps for a gas-phase peptide using IR-UV double-resonance spectroscopy and density functional theory calculations

    International Nuclear Information System (INIS)

    Carr, J. K.; Roy, S.; Skinner, J. L.; Zabuga, A. V.; Rizzo, T. R.

    2014-01-01

    The spectroscopy of amide I vibrations has become a powerful tool for exploring protein structure and dynamics. To help with spectral interpretation, it is often useful to perform molecular dynamics (MD) simulations. To connect spectroscopic experiments to simulations in an efficient manner, several researchers have proposed “maps,” which relate observables in classical MD simulations to quantum spectroscopic variables. It can be difficult to discern whether errors in the theoretical results (compared to experiment) arise from inaccuracies in the MD trajectories or in the maps themselves. In this work, we evaluate spectroscopic maps independently from MD simulations by comparing experimental and theoretical spectra for a single conformation of the α-helical model peptide Ac-Phe-(Ala) 5 -Lys-H + in the gas phase. Conformation-specific experimental spectra are obtained for the unlabeled peptide and for several singly and doubly 13 C-labeled variants using infrared-ultraviolet double-resonance spectroscopy, and these spectra are found to be well-modeled by density functional theory (DFT) calculations at the B3LYP/6-31G** level. We then compare DFT results for the deuterated and 13 C 18 O-labeled peptide with those from spectroscopic maps developed and used previously by the Skinner group. We find that the maps are typically accurate to within a few cm −1 for both frequencies and couplings, having larger errors only for the frequencies of terminal amides

  6. Next Day Building Load Predictions based on Limited Input Features Using an On-Line Laterally Primed Adaptive Resonance Theory Artificial Neural Network.

    Energy Technology Data Exchange (ETDEWEB)

    Jones, Christian Birk [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Photovoltaic and Grid Integration Group; Robinson, Matt [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Mechanical Engineering; Yasaei, Yasser [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Electrical and Computer Engineering; Caudell, Thomas [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Electrical and Computer Engineering; Martinez-Ramon, Manel [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Electrical and Computer Engineering; Mammoli, Andrea [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Mechanical Engineering

    2016-07-01

    Optimal integration of thermal energy storage within commercial building applications requires accurate load predictions. Several methods exist that provide an estimate of a buildings future needs. Methods include component-based models and data-driven algorithms. This work implemented a previously untested algorithm for this application that is called a Laterally Primed Adaptive Resonance Theory (LAPART) artificial neural network (ANN). The LAPART algorithm provided accurate results over a two month period where minimal historical data and a small amount of input types were available. These results are significant, because common practice has often overlooked the implementation of an ANN. ANN have often been perceived to be too complex and require large amounts of data to provide accurate results. The LAPART neural network was implemented in an on-line learning manner. On-line learning refers to the continuous updating of training data as time occurs. For this experiment, training began with a singe day and grew to two months of data. This approach provides a platform for immediate implementation that requires minimal time and effort. The results from the LAPART algorithm were compared with statistical regression and a component-based model. The comparison was based on the predictions linear relationship with the measured data, mean squared error, mean bias error, and cost savings achieved by the respective prediction techniques. The results show that the LAPART algorithm provided a reliable and cost effective means to predict the building load for the next day.

  7. Assessment of amide I spectroscopic maps for a gas-phase peptide using IR-UV double-resonance spectroscopy and density functional theory calculations

    Science.gov (United States)

    Carr, J. K.; Zabuga, A. V.; Roy, S.; Rizzo, T. R.; Skinner, J. L.

    2014-01-01

    The spectroscopy of amide I vibrations has become a powerful tool for exploring protein structure and dynamics. To help with spectral interpretation, it is often useful to perform molecular dynamics (MD) simulations. To connect spectroscopic experiments to simulations in an efficient manner, several researchers have proposed “maps,” which relate observables in classical MD simulations to quantum spectroscopic variables. It can be difficult to discern whether errors in the theoretical results (compared to experiment) arise from inaccuracies in the MD trajectories or in the maps themselves. In this work, we evaluate spectroscopic maps independently from MD simulations by comparing experimental and theoretical spectra for a single conformation of the α-helical model peptide Ac-Phe-(Ala)5-Lys-H+ in the gas phase. Conformation-specific experimental spectra are obtained for the unlabeled peptide and for several singly and doubly 13C-labeled variants using infrared-ultraviolet double-resonance spectroscopy, and these spectra are found to be well-modeled by density functional theory (DFT) calculations at the B3LYP/6-31G** level. We then compare DFT results for the deuterated and 13C18O-labeled peptide with those from spectroscopic maps developed and used previously by the Skinner group. We find that the maps are typically accurate to within a few cm−1 for both frequencies and couplings, having larger errors only for the frequencies of terminal amides. PMID:24929378

  8. Shadow art

    KAUST Repository

    Mitra, Niloy J.

    2009-01-01

    "To them, I said, the truth would be literally nothing but the shadows of the images." - Plato, The Republic Shadow art is a unique form of sculptural art where the 2D shadows cast by a 3D sculpture are essential for the artistic effect. We introduce computational tools for the creation of shadow art and propose a design process where the user can directly specify the desired shadows by providing a set of binary images and corresponding projection information. Since multiple shadow images often contradict each other, we present a geometric optimization that computes a 3D shadow volume whose shadows best approximate the provided input images. Our analysis shows that this optimization is essential for obtaining physically realizable 3D sculptures. The resulting shadow volume can then be modified with a set of interactive editing tools that automatically respect the often intricate shadow constraints. We demonstrate the potential of our system with a number of complex 3D shadow art sculptures that go beyond what is seen in contemporary art pieces. © 2009 ACM.

  9. Art Therapy

    DEFF Research Database (Denmark)

    Skov, Vibeke; Pedersen, Inge Nygaard

    2014-01-01

    Abstract Based on a Jungian approach, this article will introduce an integrative model to therapeutic change using art therapy methods as practical tools, with the aim of improving quality of life and in the prevention of depression. In a research study involving six participants, painting, clay...... work and drumming were used together with imagination and personal dialogues linked to the artwork. These art therapy processes attempted to combine the participant’s experience of inner and outer reality. The effect of gaining more knowledge about their inner reality using dreams and symbols......, was that participants gained a new understanding about their personal life. In addition, some participants were able to continue to use art therapy experiences as selfdevelopmental tools after the research study terminated. Jung’s description of the interactive relationship between the two living parts of the psyche...

  10. Arte inolvidable

    Directory of Open Access Journals (Sweden)

    Iván Moratilla Pérez

    2018-05-01

    Full Text Available La humanidad y el arte forman un matrimonio indisoluble, no es posible concebir la una sin el otro. Incluso antes de fabricar el primer instrumento musical, la humanidad ya cantaba; antes de emplear un lienzo, pintó sobre la pared de una cueva. Las manifestaciones creativas se dan invariablemente “en la riqueza y en la pobreza”, pero también “en la salud y en la enfermedad”. En este artículo introducimos al lector a la temática del arte y la demencia, destacando la capacidad creativa de los pacientes, e incluyendo ejemplos de propuestas educativas que algunos museos desarrollan para personas con esta dolencia.

  11. Electron paramagnetic resonance

    CERN Document Server

    Al'tshuler, S A

    2013-01-01

    Electron Paramagnetic Resonance is a comprehensive text on the field of electron paramagnetic resonance, covering both the theoretical background and the results of experiment. This book is composed of eight chapters that cover theoretical materials and experimental data on ionic crystals, since these are the materials that have been most extensively studied by the methods of paramagnetic resonance. The opening chapters provide an introduction to the basic principles of electron paramagnetic resonance and the methods of its measurement. The next chapters are devoted to the theory of spectra an

  12. Unforgettable art

    Directory of Open Access Journals (Sweden)

    Iván Moratilla Pérez

    2018-05-01

    Full Text Available Humanity and Art make an indissoluble marriage, it is impossible to comprehend one without the other. Even before producing the first musical instrument, humanity already sang; before using a canvas, humans painted on the walls of a cave. Creative manifestations invariably take place in “poverty and wealth”, but also in “sickness and health”. In this article we introduce the reader to the subject of art and dementia, highlighting the creative potential of patients, and including examples of educational programmes that some museums develop for people with this condition.

  13. Distributed Learning, Recognition, and Prediction by ART and ARTMAP Neural Networks.

    Science.gov (United States)

    Carpenter, Gail A.

    1997-11-01

    A class of adaptive resonance theory (ART) models for learning, recognition, and prediction with arbitrarily distributed code representations is introduced. Distributed ART neural networks combine the stable fast learning capabilities of winner-take-all ART systems with the noise tolerance and code compression capabilities of multilayer perceptrons. With a winner-take-all code, the unsupervised model dART reduces to fuzzy ART and the supervised model dARTMAP reduces to fuzzy ARTMAP. With a distributed code, these networks automatically apportion learned changes according to the degree of activation of each coding node, which permits fast as well as slow learning without catastrophic forgetting. Distributed ART models replace the traditional neural network path weight with a dynamic weight equal to the rectified difference between coding node activation and an adaptive threshold. Thresholds increase monotonically during learning according to a principle of atrophy due to disuse. However, monotonic change at the synaptic level manifests itself as bidirectional change at the dynamic level, where the result of adaptation resembles long-term potentiation (LTP) for single-pulse or low frequency test inputs but can resemble long-term depression (LTD) for higher frequency test inputs. This paradoxical behavior is traced to dual computational properties of phasic and tonic coding signal components. A parallel distributed match-reset-search process also helps stabilize memory. Without the match-reset-search system, dART becomes a type of distributed competitive learning network.

  14. Teoría de la carga cognitiva, diseño multimedia y aprendizaje: un estado del arte (Cognitive Load Theory, Design and Multimedia Learning: A State of the Art (Théorie de la charge cognitive, dessin multimédia et apprentissage: un état de l′art (Teoria da carga cognitiva, desenho multimídia e aprendizagem: um estado da arte

    Directory of Open Access Journals (Sweden)

    Luis Alejandro Andrade Lotero

    2012-12-01

    Full Text Available ResumenEn este artículo de revisión se presenta un resumen de la Teoría de la Carga Cognitiva y la Teoría Cognitiva del Aprendizaje Multimedia. Se dan algunos ejem- plos de investigaciones empíricas y se reflexiona acerca del valor explicativo de estas teorías del aprendizaje. Se exponen diez principios para el diseño de material instruccional. No obstante, otras investigaciones han encontrado limitaciones en el uso y práctica de estas teorías. Se refieren principalmente a la medición de la carga cognitiva, a la experiencia, al conocimiento previo de los aprendices y a la motivación y aspectos afectivos que intervienen en el proceso de aprendizaje.AbstractIn this review article is a summary of the Cognitive Load Theory and Cognitive Theory of Multimedia Lear- ning. Some examples of empirical research and considerations on the explanatory value of these learning theories are given, and ten principles for designing instructional material are shown. However, other research has found limitations in the use and practice of these theories. They mainly concern the measurement of cognitive load, experience and prior knowledge of the learners, as well as motivation and emotional aspects in- volved in the learning process.RésuméDans cet article de révision on pré- sente un résumé de la théorie de la charge cognitive et la théorie cogniti- ve de l'apprentissage multimédia. On fournit des exemples de recherches empiriques et on fait une réflexion par rapport à l'importance explica- tive de ces théories d’apprentissage. On présente dix principes pour le dessin du matériel d'instruction. Mal- gré les recherches qu'ont trouvé des limitations dans l'usage et la pratique de ces théories. Elles font référence, notamment à la mesure de la charge cognitive, à l'expérience et la con- naissance préalable des apprentis et aussi à la motivation et aux aspects affectifs qui intervient dans le pro- cessus de l

  15. Taking Art Personally: Austin, Performatives and Art

    Directory of Open Access Journals (Sweden)

    David Goldblatt

    2011-01-01

    Full Text Available This paper is an attempt to apply speech act theory to aesthetics. In particular, it purports to be a contribution to reception theory by drawing attention to certain similarities between the contextual structure of performatives and the structure of the reception of art. It hopes to locate the auditor or spectator of artworks in what J. L. Austin calls “the total context” to help explain how certain aspects of artworks can be taken personally, somehow being about and seemingly directed at “me.” It is one way the so-called paradox of fiction can be by-passed by showing how the emotive aspects of artworks are not primarily a matter of our caring about the fictional characters portrayed therein, but directly about members of the viewing or listening audience. Concentrating on the performatives of warnings and threats, this paper details the writings of Austin to help explain why some people can relate to characters or situations presented by art while others are barely moved.

  16. Art and emotion in psychoanalysis.

    Science.gov (United States)

    Jurist, Elliot L

    2006-10-01

    Freud's view that art satisfies psychic needs has been taken to mean that art has its source in the unconscious and that it unifies pleasure and reality. The author argues that there is a third point that Freud repeatedly emphasizes, which should not be overlooked, that art influences our emotions. The author examines what Freud means by this claim, in particular, his reading of Michelangelo's Moses. Freud's focus here on emotions as fundamental to subjective experience, as subject to regulation and as potentially healthy forms of communication serves to supplement and even challenge what he says in his theory of affect. The author concludes by making inferences about a contemporary psychoanalytic theory of affects: that it ought to be inclusive of science (more receptive to neurobiology and less bound to Freud) as well as art (preserving the focus on subjective experience, especially the processing of complex emotions), which is illustrated with the concept of mentalized affectivity.

  17. Chicken Art

    Science.gov (United States)

    Bickett, Marianne

    2009-01-01

    In this article, the author describes how a visit from a flock of chickens provided inspiration for the children's chicken art. The gentle clucking of the hens, the rooster crowing, and the softness of the feathers all provided rich aural, tactile, visual, and emotional experiences. The experience affirms the importance and value of direct…

  18. The art of software modeling

    CERN Document Server

    Lieberman, Benjamin A

    2007-01-01

    Modeling complex systems is a difficult challenge and all too often one in which modelers are left to their own devices. Using a multidisciplinary approach, The Art of Software Modeling covers theory, practice, and presentation in detail. It focuses on the importance of model creation and demonstrates how to create meaningful models. Presenting three self-contained sections, the text examines the background of modeling and frameworks for organizing information. It identifies techniques for researching and capturing client and system information and addresses the challenges of presenting models to specific audiences. Using concepts from art theory and aesthetics, this broad-based approach encompasses software practices, cognitive science, and information presentation. The book also looks at perception and cognition of diagrams, view composition, color theory, and presentation techniques. Providing practical methods for investigating and organizing complex information, The Art of Software Modeling demonstrate...

  19. Design principles and theory of paramagnetic fluorine-labelled lanthanide complexes as probes for (19)F magnetic resonance: a proof-of-concept study.

    Science.gov (United States)

    Chalmers, Kirsten H; De Luca, Elena; Hogg, Naomi H M; Kenwright, Alan M; Kuprov, Ilya; Parker, David; Botta, Mauro; Wilson, J Ian; Blamire, Andrew M

    2010-01-04

    The synthesis and spectroscopic properties of a series of CF(3)-labelled lanthanide(III) complexes (Ln=Gd, Tb, Dy, Ho, Er, Tm) with amide-substituted ligands based on 1,4,7,10-tetraazacyclododecane are described. The theoretical contributions of the (19)F magnetic relaxation processes in these systems are critically assessed and selected volumetric plots are presented. These plots allow an accurate estimation of the increase in the rates of longitudinal and transverse relaxation as a function of the distance between the Ln(III) ion and the fluorine nucleus, the applied magnetic field, and the re-rotational correlation time of the complex, for a given Ln(III) ion. Selected complexes exhibit pH-dependent chemical shift behaviour, and a pK(a) of 7.0 was determined in one example based on the holmium complex of an ortho-cyano DO3A-monoamide ligand, which allowed the pH to be assessed by measuring the difference in chemical shift (varying by over 14 ppm) between two (19)F resonances. Relaxation analyses of variable-temperature and variable-field (19)F, (17)O and (1)H NMR spectroscopy experiments are reported, aided by identification of salient low-energy conformers by using density functional theory. The study of fluorine relaxation rates, over a field range of 4.7 to 16.5 T allowed precise computation of the distance between the Ln(III) ion and the CF(3) reporter group by using global fitting methods. The sensitivity benefits of using such paramagnetic fluorinated probes in (19)F NMR spectroscopic studies are quantified in preliminary spectroscopic and imaging experiments with respect to a diamagnetic yttrium(III) analogue.

  20. The neural correlates of theory of mind and their role during empathy and the game of chess: A functional magnetic resonance imaging study.

    Science.gov (United States)

    Powell, Joanne L; Grossi, Davide; Corcoran, Rhiannon; Gobet, Fernand; García-Fiñana, Marta

    2017-07-04

    Chess involves the capacity to reason iteratively about potential intentional choices of an opponent and therefore involves high levels of explicit theory of mind [ToM] (i.e. ability to infer mental states of others) alongside clear, strategic rule-based decision-making. Functional magnetic resonance imaging was used on 12 healthy male novice chess players to identify cortical regions associated with chess, ToM and empathizing. The blood-oxygenation-level-dependent (BOLD) response for chess and empathizing tasks was extracted from each ToM region. Results showed neural overlap between ToM, chess and empathizing tasks in right-hemisphere temporo-parietal junction (TPJ) [BA40], left-hemisphere superior temporal gyrus [BA22] and posterior cingulate gyrus [BA23/31]. TPJ is suggested to underlie the capacity to reason iteratively about another's internal state in a range of tasks. Areas activated by ToM and empathy included right-hemisphere orbitofrontal cortex and bilateral middle temporal gyrus: areas that become active when there is need to inhibit one's own experience when considering the internal state of another and for visual evaluation of action rationality. Results support previous findings, that ToM recruits a neural network with each region sub-serving a supporting role depending on the nature of the task itself. In contrast, a network of cortical regions primarily located within right- and left-hemisphere medial-frontal and parietal cortex, outside the internal representational network, was selectively recruited during the chess task. We hypothesize that in our cohort of novice chess players the strategy was to employ an iterative thinking pattern which in part involved mentalizing processes and recruited core ToM-related regions. Copyright © 2017. Published by Elsevier Ltd.

  1. Applied group theory applications in the engineering (physical, chemical, and medical), biological, social, and behavioral sciences and in the fine arts

    Science.gov (United States)

    Borg, S. F.

    1976-01-01

    A generalized applied group theory is developed, and it is shown that phenomena from a number of diverse disciplines may be included under the umbrella of a single theoretical formulation based upon the concept of a group consistent with the usual definition of this term.

  2. Perturbation theory of quantum resonances

    Czech Academy of Sciences Publication Activity Database

    Durand, P.; Paidarová, Ivana

    2016-01-01

    Roč. 135, č. 7 (2016), s. 159 ISSN 1432-2234 Institutional support: RVO:61388955 Keywords : Partitioning technique * Analytic continuation * Perturbative expansion Subject RIV: CF - Physical ; Theoretical Chemistry

  3. Laterally Primed Adaptive Resonance Theory

    Energy Technology Data Exchange (ETDEWEB)

    2017-07-19

    LAPART is an artificial neural network algorithm written in the Python programming language. The algorithm can learn patterns using multi-dimensional hyper boxes. It can also perfrom regression and classification calculations based on learned associations.

  4. Whose global art (history?: Ancient art as global art

    Directory of Open Access Journals (Sweden)

    Cynthia Colburn

    2016-12-01

    Full Text Available Discourse on global art or art history arguably dominates the field of art history today in terms of curriculum and research. This discourse cuts across time and space, impacting all art historical specializations, from prehistoric to contemporary, and from Africa to the Americas. Yet, the mainstream theoretical discourse on global art or art history focuses almost explicitly on contemporary and, to a lesser extent, modern art, operating from the premise that only these arts were created in an age of globalization and, thus, emphasize hybridity. This essay seeks to expand the mainstream theoretical discourse regarding global art to pre-modern examples, given that artistic exchange and hybridity dates as early as the prehistoric era all over the world and is not dependent on newer technologies. Indeed, one might argue that the study of pre-modern examples of global art could provide a powerful historical lens through which to analyze contemporary global art.

  5. A state-of-the-art review of transportation systems evaluation techniques relevant to air transportation, volume 1. [urban planning and urban transportation using decision theory

    Science.gov (United States)

    Haefner, L. E.

    1975-01-01

    Mathematical and philosophical approaches are presented for evaluation and implementation of ground and air transportation systems. Basic decision processes are examined that are used for cost analyses and planning (i.e, statistical decision theory, linear and dynamic programming, optimization, game theory). The effects on the environment and the community that a transportation system may have are discussed and modelled. Algorithmic structures are examined and selected bibliographic annotations are included. Transportation dynamic models were developed. Citizen participation in transportation projects (i.e, in Maryland and Massachusetts) is discussed. The relevance of the modelling and evaluation approaches to air transportation (i.e, airport planning) is examined in a case study in St. Louis, Missouri.

  6. Ferromagnetic resonance in a single crystal of iron borate and magnetic field tuning of hybrid oscillations in a composite structure with a dielectric: Experiment and theory

    International Nuclear Information System (INIS)

    Popov, M. A.; Zavislyak, I. V.; Chumak, H. L.; Strugatsky, M. B.; Yagupov, S. V.; Srinivasan, G.

    2015-01-01

    The high-frequency properties of a composite resonator comprised single crystal iron borate (FeBO 3 ), a canted antiferromagnet with a weak ferromagnetic moment, and a polycrystalline dielectric were investigated at 9–10 GHz. Ferromagnetic resonance in this frequency range was observed in FeBO 3 for bias magnetic fields of ∼250 Oe. In the composite resonator, the magnetic mode in iron borate and dielectric mode are found to hybridize strongly. It is shown that the hybrid mode can be tuned with a static magnetic field. Our studies indicate that coupling between the magnetic mode and the dielectric resonance can be altered from maximum hybridization to a minimum by adjusting the position of resonator inside the waveguide. Magnetic field tuning of the resonance frequency by a maximum of 145 MHz and a change in the transmitted microwave power by as much as 16 dB have been observed for a bias field of 250 Oe. A model is discussed for the magnetic field tuning of the composite resonator and theoretical estimates are in reasonable agreement with the data. The composite resonator with a weak ferromagnet and a dielectric is of interest for application in frequency agile devices with electronically tunable electrodynamic characteristics for the mm and sub-mm wave bands

  7. Communication Solutions by Improving Interactive Art Projects

    Directory of Open Access Journals (Sweden)

    Gintarė Vainalavičiūtė

    2016-03-01

    Full Text Available The article examines the emergence of new forms of expression in modern society such as technology, which makes the traditional art active and the users are drawn into the processes of creation and dissemination. Interactive art technology gradually integrates more and more people to be interested on it because of its innovative and interesting concept and idea. Interactive art removes traditional boundaries between the artist and “public”. Appearance of the new modern technologies in the art provoked the development of the interactive art which later evolved into some other forms of art as cinema, interactive dance, music and etc. The article is based on Lithuanian and foreign academic works, interactive art definition is provided the theoretical aspect of an interactive art projects is highlighted. The modern theories of marketing communications are defined. To solve examined issues marketing communication model with highlighted key elements is proposed.

  8. Lattices of dielectric resonators

    CERN Document Server

    Trubin, Alexander

    2016-01-01

    This book provides the analytical theory of complex systems composed of a large number of high-Q dielectric resonators. Spherical and cylindrical dielectric resonators with inferior and also whispering gallery oscillations allocated in various lattices are considered. A new approach to S-matrix parameter calculations based on perturbation theory of Maxwell equations, developed for a number of high-Q dielectric bodies, is introduced. All physical relationships are obtained in analytical form and are suitable for further computations. Essential attention is given to a new unified formalism of the description of scattering processes. The general scattering task for coupled eigen oscillations of the whole system of dielectric resonators is described. The equations for the  expansion coefficients are explained in an applicable way. The temporal Green functions for the dielectric resonator are presented. The scattering process of short pulses in dielectric filter structures, dielectric antennas  and lattices of d...

  9. Designing Of The Concept Of Criminal Income Of Other Persons Legalization (Art. 174 Of The Criminal Code Of The Russian Federation In The Context Of The Systems Theory

    Directory of Open Access Journals (Sweden)

    Veronika A. Abakanova

    2015-03-01

    Full Text Available In the present article assumptions of the theory concept of forensic crime, which were developed in the forensic science is being analyzed. In the study, author shows possibility of the theory of systems using for the construction of the concept of forensic crime. Author distributes systems theory on money laundering by the alius. Author examined structure of forensic money laundering by alius and described elements of the structure, their internal and external relationships and patterns, as well as mechanisms to ensure its integrity. Author suggests the following set of elements of money laundering by alius: object of direct attacks, subject of the attacks, physical attacks on the activity of the subject of money laundering by alius, mental activity of the subject of infringement, facts, consequences of money laundering by alius, time and place of money laundering other persons, public danger and wrongfulness of the act. During the study, author starts the discussion, as the starting positions allow us to consider money laundering as a complex system that has a "mechanism", ensuring its integrity and diverse types of bonds. Author notes that in the absence of this complex system, at least one of these elements is the complete destruction of the whole system of crime (lack of it. In conclusion, author proposes the concept of forensic money laundering by alius. Presented forensic structure of money laundering by alius and description of the elements of the structure, as well as their internal and external relationships and patterns, what gives the practitioners a chance to have a full picture of the crime and, therefore, to navigate freely in the initial information on the crime and to understand it correctly.

  10. Art and Finance: Fine Art Derivatives

    Directory of Open Access Journals (Sweden)

    Francesco Strati

    2014-04-01

    Full Text Available This work is intended to introduce a new kind of asset, the so called art asset. This financial tool is an asset whose value is related to an art-work, and in particular to the artist reputation. It will be shown the evaluation of an art asset by using a particular kind of volatility, the α-hedging. This tool normalizes the prices volatility of the art-works of an artist (or an art-movement by a sentiment index referred to the Art Market. At last I shall show how the art assets’ values are related to an art-call option.

  11. Arts, Brain and Cognition.

    Science.gov (United States)

    Demarin, Vida; Bedeković, Marina Roje; Puretić, Marijana Bosnar; Pašić, Marija Bošnjak

    2016-12-01

    Art is a product of human creativity; it is a superior skill that can be learned by study, practice and observation. Modern neuroscience and neuroimaging enable study of the processes during artistic performance. Creative people have less marked hemispheric dominance. It was found that the right hemisphere is specialized for metaphoric thinking, playfulness, solution finding and synthesizing, it is the center of visualization, imagination and conceptualization, but the left hemisphere is still needed for artistic work to achieve balance. A specific functional organization of brain areas was found during visual art activities. Marked hemispheric dominance and area specialization is also very prominent for music perception. Brain is capable of making new connections, activating new pathways and unmasking secondary roads, it is "plastic". Music is a strong stimulus for neuroplasticity. fMRI studies have shown reorganization of motor and auditory cortex in professional musicians. Other studies showed the changes in neurotransmitter and hormone serum levels in correlation to music. The most prominent connection between music and enhancement of performance or changing of neuropsychological activity was shown by studies involving Mozart's music from which the theory of "The Mozart Effect" was derived. Results of numerous studies showed that listening to music can improve cognition, motor skills and recovery after brain injury. In the field of visual art, brain lesion can lead to the visuospatial neglect, loss of details and significant impairment of artistic work while the lesions affecting the left hemisphere reveal new artistic dimensions, disinhibit the right hemisphere, work is more spontaneous and emotional with the gain of artistic quality. All kinds of arts (music, painting, dancing...) stimulate the brain. They should be part of treatment processes. Work of many artists is an excellent example for the interweaving the neurology and arts.

  12. Conversation and Silence: Transfer of Learning through the Arts

    Science.gov (United States)

    Catterall, James S.

    2005-01-01

    This article explores transfer of learning in the arts to non-arts learning. The analysis is presented in the context of theories of knowledge acquisition more generally. Behavioral and neuro-function processes are discussed.

  13. african art: an impetus but implicit magnitude of architectural thought ...

    African Journals Online (AJOL)

    PROF EKWUEME

    unaesthetic', could be better explained by the modern theory of fractal art; which is something beyond our conformist splendor. KEYWORDS: African art, African artifacts, Fractals, Cultural Exchange, Stylistic Influences,. Bauhausand Modernism.

  14. Characterization of the Elusive Conformers of Glycine from State-of-the-Art Structural, Thermodynamic, and Spectroscopic Computations: Theory Complements Experiment.

    Science.gov (United States)

    Barone, Vincenzo; Biczysko, Malgorzata; Bloino, Julien; Puzzarini, Cristina

    2013-03-12

    A state-of-the-art computational strategy for the evaluation of accurate molecular structures as well as thermodynamic and spectroscopic properties along with the direct simulation of infrared (IR) and Raman spectra is established, validated (on the basis of the experimental data available for the Ip glycine conformer) and then used to provide a reliable and accurate characterization of the elusive IVn/gtt and IIIp/tct glycine conformers. The integrated theoretical model proposed is based on accurate post-Hartree-Fock computations (involving composite schemes) of energies, structures, properties, and harmonic force fields coupled to DFT corrections for the proper inclusion of vibrational effects at an anharmonic level (as provided by general second-order perturbative approach). It is shown that the approach presented here allows the evaluation of structural, thermodynamic, and spectroscopic properties with an overall accuracy of about, or better than, 0.001 Å, 20 MHz, 1 kJ·mol(-1), and 10 cm(-1) for bond distances, rotational constants, conformational enthalpies, and vibrational frequencies, respectively. The high accuracy of the computational results allows one to support and complement experimental studies, thus providing (i) an unequivocal identification of several conformers concomitantly present in the experimental mixture and (ii) data not available or difficult to experimentally derive.

  15. Art and brain: insights from neuropsychology, biology and evolution.

    Science.gov (United States)

    Zaidel, Dahlia W

    2010-02-01

    Art is a uniquely human activity associated fundamentally with symbolic and abstract cognition. Its practice in human societies throughout the world, coupled with seeming non-functionality, has led to three major brain theories of art. (1) The localized brain regions and pathways theory links art to multiple neural regions. (2) The display of art and its aesthetics theory is tied to the biological motivation of courtship signals and mate selection strategies in animals. (3) The evolutionary theory links the symbolic nature of art to critical pivotal brain changes in Homo sapiens supporting increased development of language and hierarchical social grouping. Collectively, these theories point to art as a multi-process cognition dependent on diverse brain regions and on redundancy in art-related functional representation.

  16. Properties of resonance wave functions.

    Science.gov (United States)

    More, R. M.; Gerjuoy, E.

    1973-01-01

    Construction and study of resonance wave functions corresponding to poles of the Green's function for several illustrative models of theoretical interest. Resonance wave functions obtained from the Siegert and Kapur-Peierls definitions of the resonance energies are compared. The comparison especially clarifies the meaning of the normalization constant of the resonance wave functions. It is shown that the wave functions may be considered renormalized in a sense analogous to that of quantum field theory. However, this renormalization is entirely automatic, and the theory has neither ad hoc procedures nor infinite quantities.

  17. Advances in magnetic and optical resonance

    CERN Document Server

    Warren, Warren S

    1997-01-01

    Since 1965, Advances in Magnetic and Optical Resonance has provided researchers with timely expositions of fundamental new developments in the theory of, experimentation with, and application of magnetic and optical resonance.

  18. Number theory

    CERN Document Server

    Andrews, George E

    1994-01-01

    Although mathematics majors are usually conversant with number theory by the time they have completed a course in abstract algebra, other undergraduates, especially those in education and the liberal arts, often need a more basic introduction to the topic.In this book the author solves the problem of maintaining the interest of students at both levels by offering a combinatorial approach to elementary number theory. In studying number theory from such a perspective, mathematics majors are spared repetition and provided with new insights, while other students benefit from the consequent simpl

  19. Mapping Theory

    DEFF Research Database (Denmark)

    Smith, Shelley

    This paper came about within the context of a 13-month research project, Focus Area 1 - Method and Theory, at the Center for Public Space Research at the Royal Academy of the Arts School of Architecture in Copenhagen, Denmark. This project has been funded by RealDania. The goals of the research...... project, Focus Area 1 - Method and Theory, which forms the framework for this working paper, are: * To provide a basis from which to discuss the concept of public space in a contemporary architectural and urban context - specifically relating to theory and method * To broaden the discussion of the concept...

  20. Doubly resonant multiphoton ionization

    International Nuclear Information System (INIS)

    Crance, M.

    1978-01-01

    A particular case of doubly resonant multiphoton ionization is theoretically investigated. More precisely, two levels quasi-resonant with two successive harmonics of the field frequency are considered. The method used is based on the effective operator formalism first introduced for this problem by Armstrong, Beers and Feneuille. The main result is to show the possibility of observing large interference effects on the width of the resonances. Moreover this treatment allows us to make more precise the connection between effective operator formalism and standard perturbation theory

  1. African Journals Online: Art & Architecture

    African Journals Online (AJOL)

    Items 1 - 18 of 18 ... AJPHES publishes research papers that contribute to knowledge and practice, and also develops theory either as new information, reviews, ... approaches and case studies or essays demonstrating how advanced information technologies further scholarly understanding of traditional topics in the arts and ...

  2. Nonequilibrium Green's function theory of resonant steady state photoconduction in a double quantum well FET subject to THz radiation at plasmon frequency

    International Nuclear Information System (INIS)

    Horing, Norman J Morgenstern; Popov, Vyacheslav V

    2006-01-01

    Recent experimental observations by X.G. Peralta and S.J. Allen, et al. of dc photoconductivity resonances in steady source-drain current subject to terahertz radiation in a grid-gated double-quantum well FET suggested an association with plasmon resonances. This association was definitively confirmed for some parameter ranges in our detailed electrodynamic absorbance calculations. In this paper we propose that the reason that the dc photoconductance resonances match the plasmon resonances in semiconductors is based on a nonlinear dynamic screening mechanism. In this, we employ a shielded potential approximation that is nonlinear in the terahertz field to determine the nonequilibrium Green's function and associated density perturbation that govern the nonequilibrium dielectric polarization of the medium. This 'conditioning' of the system by the incident THz radiation results in resonant polarization response at the plasmon frequencies which, in turn, causes a sharp drop of the resistive shielded impurity scattering potentials and attendant increase of the dc source-drain current. This amounts to disabling the impurity scattering mechanism by plasmon resonant behavior in nonlinear screening

  3. Art Therapy Teaching as Performance Art

    Science.gov (United States)

    Moon, Bruce L.

    2012-01-01

    This viewpoint asserts that art therapy education is a form of performance art. By designing class sessions as performance artworks, art therapy educators can help their students become more fully immersed in their studies. This view also can be extended to conceptualizing each semester--and the entire art therapy curriculum--as a complex and…

  4. Art and Finance: Fine Art Derivatives

    OpenAIRE

    Francesco Strati; Laura Quattrocchi

    2014-01-01

    This work is intended to introduce a new kind of asset, the so called art asset. This financial tool is an asset whose value is related to an art-work, and in particular to the artist reputation. It will be shown the evaluation of an art asset by using a particular kind of volatility, the α-hedging. This tool normalizes the prices volatility of the art-works of an artist (or an art-movement) by a sentiment index referred to the Art Market. At last we shall show how the art assets' values are ...

  5. Performing Beauty in Participatory Art and Culture

    DEFF Research Database (Denmark)

    Heinrich, Falk

    This book investigates the notion of beauty in participatory art, an interdisciplinary form that necessitates the audience’s agential participation and that is often seen in interactive art and technology-driven media installations. After considering established theories of beauty, for example...

  6. Resonance probe; La sonde a resonance

    Energy Technology Data Exchange (ETDEWEB)

    Lepechinsky, D; Messiaen, A; Rolland, P [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1966-07-01

    After a brief review of papers recently published on the resonance probe as a tool for plasma diagnostics, the main features of the theory proposed by one of us are recalled. In this theory the geometry of the resonator formed by the probe, the ion sheath and the plasma is explicitly taken into account with the quasi-static and cold plasma approximations. Some new results emerging from this theory are indicated and a comparison with experimental data obtained with a spherical probe placed in a quiescent mercury-vapour plasma is made. A good quantitative agreement has been observed, indicating that the theory is satisfactory and justifying the assumptions involved. Nevertheless it appears that in some cases experimental results can only be interpreted when non collisional damping phenomena are taken into consideration. (author) [French] Apres un apercu des etudes recemment publiees sur la sonde a resonance pour le diagnostic des plasmas, on rappelle l'essentiel de la theorie proposee par l'un de nous ou il est tenu compte explicitement de la geometrie du resonateur forme par le systeme sonde-gaine ionique-plasma dans l'approximation quasi-statique et du plasma froid. On indique quelques resultats nouveaux pouvant etre tires de cette theorie et on la confronte avec les donnees experimentales obtenues pour une sonde spherique placee dans un plasma de mercure en equilibre. Un tres bon accord quantitatif a ete constate, indiquant que la theorie est satisfaisante et justifiant les approximations faites dans celle-ci. Il apparait toutefois que certains resultats experimentaux ne peuvent etre interpretes qu'en tenant compte des phenomenes d'amortissement non collisionnels. (auteur)

  7. Resonance analysis and evaluation of the 235U neutron induced cross sections

    International Nuclear Information System (INIS)

    Leal, L.C.

    1990-06-01

    Neutron cross sections of fissile nuclei are of considerable interest for the understanding of parameters such as resonance absorption, resonance escape probability, resonance self-shielding,and the dependence of the reactivity on temperature. In the present study, new techniques for the evaluation of the 235 U neutron cross sections are described. The Reich-Moore formalism of the Bayesian computer code SAMMY was used to perform consistent R-matrix multilevel analyses of the selected neutron cross-section data. The Δ 3 -statistics of Dyson and Mehta, along with high-resolution data and the spin-separated fission cross-section data, have provided the possibility of developing a new methodology for the analysis and evaluation of neutron-nucleus cross sections. The results of the analysis consists of a set of resonance parameters which describe the 235 U neutron cross sections up to 500 eV. The set of resonance parameters obtained through a R-matrix analysis are expected to satisfy statistical properties which lead to information on the nuclear structure. The resonance parameters were tested and showed good agreement with the theory. It is expected that the parametrization of the 235 U neutron cross sections obtained in this dissertation represents the current state of art in data as well as in theory and, therefore, can be of direct use in reactor calculations. 44 refs., 21 figs., 8 tabs

  8. Resonance – Journal of Science Education | News

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 3. Issue front ... Metabolic Engineering: Biological Art of Producing Useful Chemicals · Ram Kulkarni ... General Article. Is Calculus a Failure in Cryptography?

  9. Advances in magnetic resonance 11

    CERN Document Server

    Waugh, John S

    2013-01-01

    Advances in Magnetic Resonance, Volume 11, presents a variety of contributions to the theory and practice of magnetic resonance. The book contains three chapters and begins with a discussion of the principles and applications of dynamic nuclear polarization, with emphasis on molecular motions and collisions, intermolecular couplings, and chemical interactions. Subsequent chapters focus on the assessment of a proposed broadband decoupling method and studies of time-domain (or Fourier transform) multiple-quantum nuclear magnetic resonance.

  10. Spectra of resonance surface photoionization

    Energy Technology Data Exchange (ETDEWEB)

    Antsiferov, V.V.; Smirnov, G.I.; Telegin, G.G. [Budker Nuclear Physics Institute, Novosibirsk (Russian Federation)

    1995-09-01

    The theory of nonactivated electron transfer between atoms interacting reasonantly with coherent radiation and a metal surface is developed. The spectral resonances in photoabsorption and surface photoionization are found to be related to nonlinear interference effects in the interaction between discrete atomic levels and the continuum formed by the quasi-continuous electron spectrum of a normal metal. The asymmetry in the resonance surface photoionization spectrum is shown to have a shape typical of the Fano autoionization resonances. 18 refs.

  11. Theory of threshold phenomena

    International Nuclear Information System (INIS)

    Hategan, Cornel

    2002-01-01

    Theory of Threshold Phenomena in Quantum Scattering is developed in terms of Reduced Scattering Matrix. Relationships of different types of threshold anomalies both to nuclear reaction mechanisms and to nuclear reaction models are established. Magnitude of threshold effect is related to spectroscopic factor of zero-energy neutron state. The Theory of Threshold Phenomena, based on Reduced Scattering Matrix, does establish relationships between different types of threshold effects and nuclear reaction mechanisms: the cusp and non-resonant potential scattering, s-wave threshold anomaly and compound nucleus resonant scattering, p-wave anomaly and quasi-resonant scattering. A threshold anomaly related to resonant or quasi resonant scattering is enhanced provided the neutron threshold state has large spectroscopic amplitude. The Theory contains, as limit cases, Cusp Theories and also results of different nuclear reactions models as Charge Exchange, Weak Coupling, Bohr and Hauser-Feshbach models. (author)

  12. Coupled-resonator optical waveguides

    DEFF Research Database (Denmark)

    Raza, Søren; Grgic, Jure; Pedersen, Jesper Goor

    2010-01-01

    Coupled-resonator optical waveguides hold potential for slow-light propagation of optical pulses. The dispersion properties may adequately be analyzed within the framework of coupled-mode theory. We extend the standard coupled-mode theory for such structures to also include complex-valued paramet......Coupled-resonator optical waveguides hold potential for slow-light propagation of optical pulses. The dispersion properties may adequately be analyzed within the framework of coupled-mode theory. We extend the standard coupled-mode theory for such structures to also include complex...

  13. Deep ART Neural Model for Biologically Inspired Episodic Memory and Its Application to Task Performance of Robots.

    Science.gov (United States)

    Park, Gyeong-Moon; Yoo, Yong-Ho; Kim, Deok-Hwa; Kim, Jong-Hwan

    2017-06-26

    Robots are expected to perform smart services and to undertake various troublesome or difficult tasks in the place of humans. Since these human-scale tasks consist of a temporal sequence of events, robots need episodic memory to store and retrieve the sequences to perform the tasks autonomously in similar situations. As episodic memory, in this paper we propose a novel Deep adaptive resonance theory (ART) neural model and apply it to the task performance of the humanoid robot, Mybot, developed in the Robot Intelligence Technology Laboratory at KAIST. Deep ART has a deep structure to learn events, episodes, and even more like daily episodes. Moreover, it can retrieve the correct episode from partial input cues robustly. To demonstrate the effectiveness and applicability of the proposed Deep ART, experiments are conducted with the humanoid robot, Mybot, for performing the three tasks of arranging toys, making cereal, and disposing of garbage.

  14. ‘To enter art history – reading and writing art history in China during the Reform Era’

    Directory of Open Access Journals (Sweden)

    Orianna Cacchione

    2014-06-01

    Full Text Available This paper critically analyses how Western art history was imported, translated and negotiated in China during the Reform Era. Using Lydia Liu’s theory of “meaning-value,” the author considers how Chinese artists and art critics made sense of these texts within the context of Chinese art production in the early 1980s and 1990s. The author argues that Lin Jiahua’s artwork, To Enter Art History – Slideshow Activity (1988 anticipates a change in the relationship between Western art history and contemporary Chinese art practice from the translation and appropriation of Western modern art in the 1980s to the participation of Chinese within the emergent international art world of 1990s. By combing Chinese art within the canon of Western art history, these artists and critics proposed a spatial re- mapping of art history, decentering it from its Western-centric genealogies.

  15. Resonance charge exchange processes

    International Nuclear Information System (INIS)

    Duman, E.L.; Evseev, A.V.; Eletskij, A.V.; Radtsig, A.A.; Smirnov, B.M.

    1979-01-01

    The calculation results for the resonance charge exchange cross sections for positive and negative atomic and molecular ions are given. The calculations are performed on the basis of the asymptotic theory. The factors affecting the calculation accuracy are analysed. The calculation data for 28 systems are compared with the experiment

  16. Max Raphael: Dialectics and Greek Art

    Directory of Open Access Journals (Sweden)

    Patrick Healy

    2014-07-01

    Full Text Available The article outlines what is required for a theory of art in the late work of Max Raphael, by showing that it is a response to a problematic first formulated, but left unanswered, by Marx, and which can be seen as developed by Raphael in his writing, especially the text he devoted to a dialectic interpretation of Greek art, with special reference to temple architecture. In detailing this latter study it is possible to see how Raphael’s understanding and analysis is guided by his account of an empirical theory of art, and contributes to its further elaboration.

  17. Physics in the Art Museum

    Science.gov (United States)

    Dale, Daniel A.; Bailey, Brenae L.

    2003-02-01

    Parisian artist Paul Signac met the impressionists Claude Monet and Georges Seurat in 1884. Their influence spurred his work in pointillism (or, where the juxtaposition of small dots of color in conjunction with the limited resolving power of the human eye lead to the impression of color coalescence).1-4 To stimulate a cross-disciplinary appreciation of science and art, we used the University of Wyoming Art Museum's Signac painting "Barques de Pêche à Marseilles" (see Fig. 1) to explore diffraction theory and the anatomical limitations to our vision during an optics exercise done in the museum.

  18. The artful mind meets art history: toward a psycho-historical framework for the science of art appreciation.

    Science.gov (United States)

    Bullot, Nicolas J; Reber, Rolf

    2013-04-01

    Research seeking a scientific foundation for the theory of art appreciation has raised controversies at the intersection of the social and cognitive sciences. Though equally relevant to a scientific inquiry into art appreciation, psychological and historical approaches to art developed independently and lack a common core of theoretical principles. Historicists argue that psychological and brain sciences ignore the fact that artworks are artifacts produced and appreciated in the context of unique historical situations and artistic intentions. After revealing flaws in the psychological approach, we introduce a psycho-historical framework for the science of art appreciation. This framework demonstrates that a science of art appreciation must investigate how appreciators process causal and historical information to classify and explain their psychological responses to art. Expanding on research about the cognition of artifacts, we identify three modes of appreciation: basic exposure to an artwork, the artistic design stance, and artistic understanding. The artistic design stance, a requisite for artistic understanding, is an attitude whereby appreciators develop their sensitivity to art-historical contexts by means of inquiries into the making, authorship, and functions of artworks. We defend and illustrate the psycho-historical framework with an analysis of existing studies on art appreciation in empirical aesthetics. Finally, we argue that the fluency theory of aesthetic pleasure can be amended to meet the requirements of the framework. We conclude that scientists can tackle fundamental questions about the nature and appreciation of art within the psycho-historical framework.

  19. Parametric Resonance in Dynamical Systems

    CERN Document Server

    Nijmeijer, Henk

    2012-01-01

    Parametric Resonance in Dynamical Systems discusses the phenomenon of parametric resonance and its occurrence in mechanical systems,vehicles, motorcycles, aircraft and marine craft, and micro-electro-mechanical systems. The contributors provide an introduction to the root causes of this phenomenon and its mathematical equivalent, the Mathieu-Hill equation. Also included is a discussion of how parametric resonance occurs on ships and offshore systems and its frequency in mechanical and electrical systems. This book also: Presents the theory and principles behind parametric resonance Provides a unique collection of the different fields where parametric resonance appears including ships and offshore structures, automotive vehicles and mechanical systems Discusses ways to combat, cope with and prevent parametric resonance including passive design measures and active control methods Parametric Resonance in Dynamical Systems is ideal for researchers and mechanical engineers working in application fields such as MEM...

  20. X-ray Crystallographic, Multifrequency Electron Paramagnetic Resonance, and Density Functional Theory Characterization of the Ni(P(Cy)2N(tBu)2)2(n+) Hydrogen Oxidation Catalyst in the Ni(I) Oxidation State.

    Science.gov (United States)

    Niklas, Jens; Westwood, Mark; Mardis, Kristy L; Brown, Tiara L; Pitts-McCoy, Anthony M; Hopkins, Michael D; Poluektov, Oleg G

    2015-07-06

    The Ni(I) hydrogen oxidation catalyst [Ni(P(Cy)2N(tBu)2)2](+) (1(+); P(Cy)2N(tBu)2 = 1,5-di(tert-butyl)-3,7-dicyclohexyl-1,5-diaza-3,7-diphosphacyclooctane) has been studied using a combination of electron paramagnetic resonance (EPR) techniques (X-, Q-, and D-band, electron-nuclear double resonance, hyperfine sublevel correlation spectroscopy), X-ray crystallography, and density functional theory (DFT) calculations. Crystallographic and DFT studies indicate that the molecular structure of 1(+) is highly symmetrical. EPR spectroscopy has allowed determination of the electronic g tensor and the spin density distribution on the ligands, and revealed that the Ni(I) center does not interact strongly with the potentially coordinating solvents acetonitrile and butyronitrile. The EPR spectra and magnetic parameters of 1(+) are found to be distinctly different from those for the related compound [Ni(P(Ph)2N(Ph)2)2](+) (4(+)). One significant contributor to these differences is that the molecular structure of 4(+) is unsymmetrical, unlike that of 1(+). DFT calculations on derivatives in which the R and R' groups are systematically varied have allowed elucidation of structure/substituent relationships and their corresponding influence on the magnetic resonance parameters.

  1. Art Therapy: What Is Art Therapy?

    Science.gov (United States)

    ... individual, couples, family, and group therapy formats. Art therapy is an effective treatment for people experiencing developmental, medical, educational, and social or psychological impairment. Individuals who benefit from art therapy include ...

  2. Multiple photon resonances

    International Nuclear Information System (INIS)

    Elliott, C.J.; Feldman, B.J.

    1979-02-01

    A detailed theoretical analysis is presented of the interaction of intense near-resonant monochromatic radiation with an N-level anharmonic oscillator. In particular, the phenomenon of multiple photon resonance, the process by which an N-level system resonantly absorbs two or more photons simultaneously, is investigated. Starting from the Schroedinger equation, diagrammatic techniques are developed that allow the resonant process to be analyzed quantitatively, in analogy with well-known two-level coherent phenomena. In addition, multiple photon Stark shifts of the resonances, shifts absent in two-level theory, are obtained from the diagrams. Insights into the nature of multiple photon resonances are gained by comparing the quantum mechanical system with classical coupled pendulums whose equations of motion possess identical eigenvalues and eigenvectors. In certain limiting cases, including that of the resonantly excited N-level harmonic oscillator and that of the equally spaced N-level system with equal matrix elements, analytic results are derived. The influence of population relaxation and phase-disrupting collisions on the multiple photon process are also analyzed, the latter by extension of the diagrammatic technique to the density matrix equations of motion. 11 figures

  3. Properties of spiral resonators

    International Nuclear Information System (INIS)

    Haeuser, J.

    1989-10-01

    The present thesis deals with the calculation and the study of the application possibilities of single and double spiral resonators. The main aim was the development and the construction of reliable and effective high-power spiral resonators for the UNILAC of the GSI in Darmstadt and the H - -injector for the storage ring HERA of DESY in Hamburg. After the presentation of the construction and the properties of spiral resonators and their description by oscillating-circuit models the theoretical foundations of the bunching are presented and some examples of a rebuncher and debuncher and their influence on the longitudinal particle dynamics are shown. After the description of the characteristic accelerator quantities by means of an oscillating-circuit model and the theory of an inhomogeneous λ/4 line it is shown, how the resonance frequency and the efficiency of single and double spiral resonators can be calculated from the geometrical quantities of the structure. In the following the dependence of the maximal reachable resonator voltage in dependence on the gap width and the surface of the drift tubes is studied. Furthermore the high-power resonators are presented, which were built for the different applications for the GSI in Darmstadt, DESY in Hamburg, and for the FOM Institute in Amsterdam. (orig./HSI) [de

  4. Arts Impact: Lessons from ArtsBridge

    Science.gov (United States)

    Shimshon-Santo, Amy R.

    2010-01-01

    Arts Impact summarizes lessons learned at the ArtsBridge Program. It is informed by in-depth participant observation, logic modeling, and quantitative evaluation of program impact on K-12 students in inner city schools and arts students at the University of California Los Angeles over a two year period. The case study frames its analysis through a…

  5. The Liberal Arts and the Martial Arts.

    Science.gov (United States)

    Levine, Donald N.

    1984-01-01

    Liberal arts and the martial arts are compared from the perspective that courses of training in the martial arts often constitute exemplary educational programs and are worth examining closely. Program characteristics, individual characteristics fostered by them, the relationship between liberal and utilitarian learning, and the moral…

  6. Knots in Art

    Directory of Open Access Journals (Sweden)

    Radmila Sazdanović

    2012-06-01

    Full Text Available We analyze applications of knots and links in the Ancient art, beginning from Babylonian, Egyptian, Greek, Byzantine and Celtic art. Construction methods used in art are analyzed on the examples of Celtic art and ethnical art of Tchokwe people from Angola or Tamil art, where knots are constructed as mirror-curves. We propose different methods for generating knots and links based on geometric polyhedra, suitable for applications in architecture and sculpture.

  7. The art of scent

    DEFF Research Database (Denmark)

    Stenslund, Anette

    2017-01-01

    At the Museum of Art and Design in New York the The Art of Scent (1889–2012) exhibition announced its declared aim of bringing to the forefront of the arts what has long been considered the fallen angel of the senses: it would inscribe scent into fine art through a display characterised by its ex...... of art, this paper argues that scent that is not of high culture may yet, phenomenologically speaking, be considered great art....

  8. Knots in Art

    OpenAIRE

    Jablan, Slavik; Radović, Ljiljana; Sazdanović, Radmila; Zeković, Ana

    2012-01-01

    We analyze applications of knots and links in the Ancient art, beginning from Babylonian, Egyptian, Greek, Byzantine and Celtic art. Construction methods used in art are analyzed on the examples of Celtic art and ethnical art of Tchokwe people from Angola or Tamil art, where knots are constructed as mirror-curves. We propose different methods for generating knots and links based on geometric polyhedra, suitable for applications in architecture and sculpture.

  9. Time Dependent Density Functional Theory description of giant resonances in transition metal complexes: The photoionization dynamics of Cr(CO)6

    International Nuclear Information System (INIS)

    Stener, M.; Fronzoni, G.; Decleva, P.

    2009-01-01

    The photoionization dynamics of Cr(CO) 6 has been calculated at the TDDFT level, employing a basis set of multicentric B-spline functions with the explicit treatment of the photoelectron continuum. The cross section and the asymmetry parameter profiles of all the valence orbitals have been considered and compared with the available experimental data. The most interesting spectral feature is the intense autoionization resonance Cr 3p → Cr 3d observed in the experiment of band A, which is very well reproduced by present calculation at the TDDFT level. Other observed spectral features have been ascribed to shape resonances and assigned according to the dipole-prepared continuum orbital nature. The present TDDFT scheme proves accurate and practicable on large and complex systems containing transition metal compounds, for the description and the interpretation of the photoionization dynamics.

  10. Mapping out the Identity of African Arts and Aesthetics | Situma ...

    African Journals Online (AJOL)

    This article utilizes the hermeneutic theory of Paul Ricoeur and its concepts of text, historicity, distance, narrative and metaphor to map out the salient features of African arts and aesthetics. It also uses the Ricoeurian concept of metaphor to demarcate the boundary between art and popular art. The focus of this mapping out ...

  11. Psychological Models of Art Reception must be Empirically Grounded

    DEFF Research Database (Denmark)

    Nadal, Marcos; Vartanian, Oshin; Skov, Martin

    2017-01-01

    We commend Menninghaus et al. for tackling the role of negative emotions in art reception. However, their model suffers from shortcomings that reduce its applicability to empirical studies of the arts: poor use of evidence, lack of integration with other models, and limited derivation of testable...... hypotheses. We argue that theories about art experiences should be based on empirical evidence....

  12. Bridging two worlds that care about art: psychological and historical approaches to art appreciation.

    Science.gov (United States)

    Thompson, William Forde; Antliff, Mark

    2013-04-01

    Art appreciation often involves contemplation beyond immediate perceptual experience. However, there are challenges to incorporating such processes into a comprehensive theory of art appreciation. Can appreciation be captured in the responses to individual artworks? Can all forms of contemplation be defined? What properties of artworks trigger contemplation? We argue that such questions are fundamental to a psycho-historical framework for the science of art appreciation, and we suggest research that may assist in refining this framework.

  13. Mathematics for the liberal arts

    CERN Document Server

    Bindner, Donald; Hemmeter, Joe

    2014-01-01

    Presents a clear bridge between mathematics and the liberal arts Mathematics for the Liberal Arts provides a comprehensible and precise introduction to modern mathematics intertwined with the history of mathematical discoveries. The book discusses mathematical ideas in the context of the unfolding story of human thought and highlights the application of mathematics in everyday life. Divided into two parts, Mathematics for the Liberal Arts first traces the history of mathematics from the ancient world to the Middle Ages, then moves on to the Renaissance and finishes with the development of modern mathematics. In the second part, the book explores major topics of calculus and number theory, including problem-solving techniques and real-world applications. This book emphasizes learning through doing, presents a practical approach, and features: A detailed explanation of why mathematical principles are true and how the mathematical processes workNumerous figures and diagrams as well as hundreds of worked example...

  14. Biological Art of Producing Useful Chemicals

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 3. Metabolic Engineering: Biological Art of Producing Useful Chemicals. Ram Kulkarni. General Article Volume 21 Issue 3 March 2016 pp 233-237. Fulltext. Click here to view fulltext PDF. Permanent link:

  15. Interactions among resonances in the unresolved region

    International Nuclear Information System (INIS)

    Queiroz Bogado Leite, S. de.

    1982-11-01

    The theory on resonance absorption in the unresolved region is reviewed and a subroutine is presented, optional to UNRES in MC 2 code. Comparisons with the isolated resonance model suggest the necessity, in some cases, of considering interference and overlapping effects among resonances of the system. (Author) [pt

  16. Advances in magnetic resonance 12

    CERN Document Server

    Waugh, John S

    2013-01-01

    Advances in Magnetic Resonance, Volume 12, presents a variety of contributions to the theory and practice of magnetic resonance. The book contains six chapters and begins with a discussion of diffusion and self-diffusion measurements by nuclear magnetic resonance. This is followed by separate chapters on spin-lattice relaxation time in hydrogen isotope mixtures; the principles of optical detection of nuclear spin alignment and nuclear quadropole resonance; and the spin-1 behavior, including the relaxation of the quasi-invariants of the motion of a system of pairs of dipolar coupled spin-1/2 nu

  17. Art Education as a Means of Promoting Democracy: Preparing Pre-Service Art Teachers for Social Justice Education

    Science.gov (United States)

    Alazmi, Fatemah M.

    2017-01-01

    The purpose of this qualitative study was to investigate the use of art as a pedagogical tool with pre-service art teachers in a graduate-level art education class. A curriculum was developed focusing on educational social justice theories and their application in regard to gender inequity and diversity issues. The goal was to lead students to…

  18. Modeling the Process of Color Image Recognition Using ART2 Neural Network

    Directory of Open Access Journals (Sweden)

    Todor Petkov

    2015-09-01

    Full Text Available This paper thoroughly describes the use of unsupervised adaptive resonance theory ART2 neural network for the purposes of image color recognition of x-ray images and images taken by nuclear magnetic resonance. In order to train the network, the pixel values of RGB colors are regarded as learning vectors with three values, one for red, one for green and one for blue were used. At the end the trained network was tested by the values of pictures and determines the design, or how to visualize the converted picture. As a result we had the same pictures with colors according to the network. Here we use the generalized net to prepare a model that describes the process of the color image recognition.

  19. Revisiting the "Art Bias" in Lay Conceptions of Creativity

    Science.gov (United States)

    Glaveanu, Vlad Petre

    2014-01-01

    This article explores the "art bias"--the pervasive association between creativity and art in implicit theories of creativity. It also attempts to connect creativity research in this area with literature on the theory of social representations. The data comes from an online survey completed by 195 participants mainly from the United…

  20. REMATERIALIZED TENDENCIES IN MEDIA ART?FROM SILICON TO CARBON-BASED ART

    Directory of Open Access Journals (Sweden)

    DANIEL LÓPEZ DEL RINCÓN

    2013-01-01

    Full Text Available The importance of digitality in Media Art theories consolidated the aesthetic of dematerialization, as it shifted the value of materiality in this field. However, the advent of new forms of technological art, such as Bio Art, which uses laboratory technologies in an aesthetic way to manipulate life, demonstrates the crisis of this paradigm and the trend of rematerialization. This paper investigates the role of materiality, even in the more dematerialized realms of Media Art: the digital technologies. We focus on two art forms that combine new technologies and life sciences: Artificial life, which involves the intangible features of Media Art, and Bio Art, which interprets materiality in a radical manner, by choosing life as the raw material for artistic creation.

  1. REMATERIALIZED TENDENCIES IN MEDIA ART? FROM SILICON TO CARBON-BASED ART

    Directory of Open Access Journals (Sweden)

    Daniel López del Rincón

    2013-01-01

    Full Text Available The importance of digitality in Media Art theories consolidated the aesthetic of dematerialization, as it shifted the value of materiality in this field. However, the advent of new forms of technological art, such as Bio Art, which uses laboratory technologies in an aesthetic way to manipulate life, demonstrates the crisis of this paradigm and the trend of rematerialization. This paper investigates the role of materiality, even in the more dematerialized realms of Media Art: the digital technologies. We focus on two art forms that combine new technologies and life sciences: Artificial life, which involves the intangible features of Media Art, and Bio Art, which interprets materiality in a radical manner, by choosing life as the raw material for artistic creation.

  2. The Spirit of Adventure and the Art of Creation

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 7. The Spirit of Adventure and the Art of Creation: Camphor to Vitamin B12. Setty Mallikarjuna Babu Subramania Ranganathan. General Article Volume 19 Issue 7 July 2014 pp 593-623 ... Keywords. Camphor; vitamin B12; art of creation.

  3. Mental Representations in Art Discourse

    Directory of Open Access Journals (Sweden)

    Katja Sudec

    2014-03-01

    Full Text Available The paper starts by examining the content included in the museum environment, where I write about the type of relations that emerge in a museum or artistic setting. This is followed by an observation of a social act (socialising and a chapter on the use of food in an artistic venue. At the end, I address art education via the format that I developed at the 6th Berlin Biennale. This is followed by an overview of the cognitive model of the fort-da game based on Freud’s theory via two discourse models. Here, I address discourse on art works in the form of a lecture or reading, where the art space is fictitiously present, and then move on to discuss discourse on art works in real, “present” art space. This is followed by a section on actions (Handlungen in German and methods supporting the fort-da model. The last part of the article examines the issue of “mental representations”, defining and explaining the function of mental representations with regard to the target audience of the blind and visually impaired.

  4. Self-pumped phase conjugation in InP:Fe using band-edge resonance and temperature stabilization - Theory and experiments

    Science.gov (United States)

    Millerd, James E.; Garmire, Elsa M.; Klein, Marvin B.

    1992-01-01

    Data showing nonlinear resonantly enhanced photorefractive response at high modulation depths in InP:Fe are presented. A simple empirical model is used to describe the behavior. Next the impact of these large-signal effects, as well as linear absorption, on the self-pumped phase-conjugate mirror is examined. Predicted performance is compared to actual measurements of a ring self-pumped phase-conjugate mirror using InP. The performance of the double-pumped phase-conjugate mirror is also examined experimentally and compared with the performance of the ring mirror.

  5. Višak života: teorija i filozofija savremene tranzicijske umetnosti i forme života / Surplus Life: The Theory and Philosophy of Contemporary Transitional Art and Form of Life

    Directory of Open Access Journals (Sweden)

    Miško Šuvaković

    2012-12-01

    Full Text Available Th is text is about understanding theoretically and the philosophically the conditions of thinking and acting in different registers of art, science, technology, and politics in contemporary transitional cultures. In the context of abstract knowledge, the central problem of the following discussion will be to articulate the understanding and presenting of thinking and acting immanent to multiplicity. My intent is to theorise both the immediate and broader contexts of Bio Art within the larger context of concrete knowledge. Bio Art offers an occasion to explore structural potentialities and modifications at various intersections of technology, science, politics, and art in contemporary culture.

  6. Arts Education Beyond Art : Teaching Art in Times of Change

    NARCIS (Netherlands)

    van Heusden, Bernard; Gielen, Pascal

    2015-01-01

    People and societies thrive on a versatile and imaginative awareness. Yet the critical debate on arts education is still too often about the qualities of artefacts and technical skills, and tends to neglect issues such as the critical function of the arts in society, artistic cognition and cognitive

  7. Wildlife art and illustration: some experiments in Auroville, India

    Directory of Open Access Journals (Sweden)

    M.E. Ramanujam

    2011-04-01

    Full Text Available The various media experimented with and some experiences have been discussed. The difference between traditional animal art (where religious and anecdotal insinuation, decoration and function are the onus and wildlife art (where exactness to the natural form is the catchword has been reiterated. The present schools of wildlife art (American and European have been touched upon and so has the theory of our fascination for wildlife art.

  8. The 'Maternal' Feminist: Exploring The Primal in Women's Art

    Directory of Open Access Journals (Sweden)

    Pamela Turton-Turner

    2012-01-01

    Full Text Available This paper explores women's art that interrogates the logic intrinsic to a powerful concept of maternal caring evident in Marian iconography. While conventional portrayals of women in the history of art connote maternity as divine and mystical, women's art with a feminist sensibility reconfigures the mother figure as monstrous and forbidding. Through the use of visual semiotics and Kristevan psychoanalytic theories, I analyse how feminist art reconciles sacred and sadistic states for a more aggressive mother to emerge.

  9. Taking the Arts Seriously

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    what makes art special in an anthropologic and evolutionary biologic point of view. Cases on the emerging field of arts-in-business in Denmark.......what makes art special in an anthropologic and evolutionary biologic point of view. Cases on the emerging field of arts-in-business in Denmark....

  10. Inspired by African Art.

    Science.gov (United States)

    Heintz, June Rutledge

    1991-01-01

    Argues that African art helps children to learn vital art concepts and enlarges their understanding of the role of art in human culture. Outlines a unit on African art based on animals. Students created fabric designs and illustrated folktales and fables. Provides a list of free resources. (KM)

  11. Cultivating Demand for the Arts: Arts Learning, Arts Engagement, and State Arts Policy. Summary

    Science.gov (United States)

    Zakaras, Laura; Lowell, Julia F.

    2008-01-01

    The findings summarized in this report are intended to shed light on what it means to cultivate demand for the arts, why it is necessary and important to cultivate this demand, and what state arts agencies (SAAs) and other arts and education policymakers can do to help. The research considered only the benchmark arts central to public policy:…

  12. Synchrobetatron resonances

    International Nuclear Information System (INIS)

    1977-03-01

    At the 1975 Particle Accelerator Conference it was reported that a class of resonances were observed in SPEAR II that had not appeared before in SPEAR I. While the existence of sideband resonances of the main betatron oscillation frequencies has been previously observed and analyzed, the resonances observed in SPEAR do not appear to be of the same variety. Experiments were performed at SPEAR to identify the mechanism believed to be the most likely explanation. Some of the current experimental knowledge and theoretical views on the source of these resonances are presented

  13. Snake resonances

    International Nuclear Information System (INIS)

    Tepikian, S.

    1988-01-01

    Siberian Snakes provide a practical means of obtaining polarized proton beams in large accelerators. The effect of snakes can be understood by studying the dynamics of spin precession in an accelerator with snakes and a single spin resonance. This leads to a new class of energy independent spin depolarizing resonances, called snake resonances. In designing a large accelerator with snakes to preserve the spin polarization, there is an added constraint on the choice of the vertical betatron tune due to the snake resonances. 11 refs., 4 figs

  14. Phenomenology of Baryon Resonances

    Energy Technology Data Exchange (ETDEWEB)

    Doring, Michael [George Washington Univ., Washington, DC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Landay, Justin [George Washington Univ., Washington, DC (United States); Mai, Maxim [George Washington Univ., Washington, DC (United States); Molina, Raquel [Univ. of Sao Paulo (Brazil); Ronchen, Deborah [Univ. of Bonn (Germany)

    2018-04-01

    Results for light baryon spectroscopy by different collaborations and the state of the art in the subfield is reviewed. Highlights contain common efforts of different phenomenology groups and the impact of recent high-precision data from ELSA, JLab, MAMI, and other facilities. Questions will be addressed, on one side, of how to proceed to reach conclusive answers in baryon spectroscopy, and, on the other side, how phenomenology can be connected to theory in a meaningful way.

  15. Electrothermally Tunable Bridge Resonator

    KAUST Repository

    Hajjaj, Amal Z.; Alcheikh, Nouha; Ramini, Abdallah; Hafiz, Md Abdullah Al; Younis, Mohammad I.

    2016-01-01

    This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of an in-plane clamped-clamped microbeam, bridge, and resonator compressed by a force due to electrothermal actuation. We demonstrate that a single resonator can be operated at a wide range of frequencies. The microbeam is actuated electrothermally, by passing a DC current through it. We show that when increasing the electrothermal voltage, the compressive stress inside the microbeam increases, which leads eventually to its buckling. Before buckling, the fundamental frequency decreases until it drops to very low values, almost to zero. After buckling, the fundamental frequency increases, which is shown to be as high as twice the original resonance frequency. Analytical results based on the Galerkin discretization of the Euler Bernoulli beam theory are generated and compared to the experimental data and to simulation results of a multi-physics finite-element model. A good agreement is found among all the results.

  16. Electrothermally Tunable Bridge Resonator

    KAUST Repository

    Hajjaj, Amal Z.

    2016-12-05

    This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of an in-plane clamped-clamped microbeam, bridge, and resonator compressed by a force due to electrothermal actuation. We demonstrate that a single resonator can be operated at a wide range of frequencies. The microbeam is actuated electrothermally, by passing a DC current through it. We show that when increasing the electrothermal voltage, the compressive stress inside the microbeam increases, which leads eventually to its buckling. Before buckling, the fundamental frequency decreases until it drops to very low values, almost to zero. After buckling, the fundamental frequency increases, which is shown to be as high as twice the original resonance frequency. Analytical results based on the Galerkin discretization of the Euler Bernoulli beam theory are generated and compared to the experimental data and to simulation results of a multi-physics finite-element model. A good agreement is found among all the results.

  17. Art investment in South Africa: Portfolio diversification and art market efficiency

    Directory of Open Access Journals (Sweden)

    Ferdi Botha

    2016-09-01

    Full Text Available Art has been suggested as a good way to diversify investment portfolios during times of financial uncertainty. The argument is that art exhibits different risk and return characteristics to conventional investments in other asset classes. The new Citadel art price index offered the opportunity to test this theory in the South African context. Moreover, this paper tests whether art prices are efficient. The Citadel index uses the hedonic regression method with observations drawn from the top 100, 50 and 20 artists by sales volume, giving approximately 29 503 total auction observations. The Index consists of quarterly data from the period 2000Q1 to 2013Q3. A vector autoregression of the art price index, Johannesburg stock exchange all-share index, house price index, and South African government bond index were used. Results show that, when there are increased returns on the stock market in a preceding period and wealth increases, there is a change in the Citadel art price index in the same direction. No significant difference was found between the house price index and the art price index, or between the art and government bond price indices. The art market is also found to be inefficient, thereby exacerbating the risk of investing in art. Overall, the South African art market does not offer the opportunity to diversify portfolios dominated by either property, bonds, or shares.

  18. Application of R-matrix theory to resonant reactive electron-molecule scattering: Vibrational excitation and dissociative attachment of N2 and F2

    International Nuclear Information System (INIS)

    Wong, C.F.; Light, J.C.

    1984-01-01

    Based on the R-matrix approach of Schneider et al. [J. Phys. B 12, L 365 (1979)] to reactive electron-molecule scattering, a new propagative R-matrix method (PRMM) is presented which is more appropriate for polyatomic systems. The new method should be useful in other calculations where complicated integrals need to be propagated. We also introduce an effective R-matrix model (ERMM) in which the usual resonance parameters (potential and width) can be used as input in model R-matrix calculations. The PRMM and ERMM have been applied to the electron-N 2 system and the electron-F 2 system. The results agree very well with previous calculations for both vibrationally inelastic scattering and dissociative attachment when identical potentials and parameters are used

  19. The calculation of Feshbach resonances using coupled propagator equations

    International Nuclear Information System (INIS)

    Zhan, Hongbin; Zhang, Yinchun; Winkler, P.

    1994-01-01

    A coupled channel theory of resonances has been formulated within the propagator approach of man-body theory and applied to the 1s3s 2 resonance of e-helium scattering. This system has previously been studied both experimentally and theoretically. These results for the width of the resonance agree well with these earlier findings

  20. Nonlinear resonances

    CERN Document Server

    Rajasekar, Shanmuganathan

    2016-01-01

    This introductory text presents the basic aspects and most important features of various types of resonances and anti-resonances in dynamical systems. In particular, for each resonance, it covers the theoretical concepts, illustrates them with case studies, and reviews the available information on mechanisms, characterization, numerical simulations, experimental realizations, possible quantum analogues, applications and significant advances made over the years. Resonances are one of the most fundamental phenomena exhibited by nonlinear systems and refer to specific realizations of maximum response of a system due to the ability of that system to store and transfer energy received from an external forcing source. Resonances are of particular importance in physical, engineering and biological systems - they can prove to be advantageous in many applications, while leading to instability and even disasters in others. The book is self-contained, providing the details of mathematical derivations and techniques invo...

  1. Introduction: Art and finance

    Directory of Open Access Journals (Sweden)

    Gerald Nestler

    2016-12-01

    Full Text Available The editorial premise of this special issue is that the adage ‘art and money do not mix’ is now wholly untenable. As detailed in our extended interview with Clare McAndrew, the art market has grown rapidly over the last twenty years, leading to systemic and structural changes in the art field. For some, this growth of the market and its significance for art is an institutional misfortune that, for all of its effects, is nonetheless inconsequential to the normative claim that art and money shouldn’t mix. This commonplace premise looks to keep the sanctity or romance of art from the business machinations of market mechanisms, as eloquently summarised by Oscar Wilde’s definition of cynicism (‘knowing the price of everything and the value of nothing’. This issue repudiates that normative moral code, and precisely for the reasons just stated: by now, the interests of the art market permeate all the way through the art system. The interests of the art market shape what is exhibited and where; what kinds of discourse circulate around which art (or even as art and in what languages; and what, in general, is understood to count as art. In short, the art market – comprising mainly of collectors, galleries and auction houses – is now the primary driver in what is valuable in art.

  2. On the Esthetic Value of Works of Art

    Directory of Open Access Journals (Sweden)

    Blagomir Papazov

    2017-03-01

    Full Text Available The study of the processes involved in the creation of a work of art has been the focus of numerous complex theories which continue to find new interpretations in an attempt to reflect the emerging innovative forms of visual arts. Theory and history of art are an ever-changing field of ideas and interpretations of the processes of art creation and discussions about the definition of what constitutes a „work of art“. Works of art have a special social significance as they are an integral part of the culture of a society. They reflect the esthetic and artistic values of the time in which they were created, and the style and changes it undergoes in time. The interpretation of a work of art has always been a kind of improvisation, which however requires esthetic empirical evidence and professional expertise in the respective type of art.

  3. Electrothermally Tunable Arch Resonator

    KAUST Repository

    Hajjaj, Amal Z.

    2017-03-18

    This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of electrothermally actuated microelectromechanical arch beams. The beams are made of silicon and are intentionally fabricated with some curvature as in-plane shallow arches. An electrothermal voltage is applied between the anchors of the beam generating a current that controls the axial stress caused by thermal expansion. When the electrothermal voltage increases, the compressive stress increases inside the arch beam. This leads to an increase in its curvature, thereby increasing its resonance frequencies. We show here that the first resonance frequency can increase monotonically up to twice its initial value. We show also that after some electrothermal voltage load, the third resonance frequency starts to become more sensitive to the axial thermal stress, while the first resonance frequency becomes less sensitive. These results can be used as guidelines to utilize arches as wide-range tunable resonators. Analytical results based on the nonlinear Euler Bernoulli beam theory are generated and compared with the experimental data and the results of a multi-physics finite-element model. A good agreement is found among all the results. [2016-0291

  4. ‘The resonance of ruins and the question of history’: Southeast Asia in Ruins: Art and Empire in the Early 19th Century, by Sarah Tiffin, Singapore: NUS Press, 2016,

    Directory of Open Access Journals (Sweden)

    Anna Blair

    2017-12-01

    Full Text Available Southeast Asia in Ruins: Art and Empire in the Early 19th Century, by Sarah Tiffin, offers an overview of eighteenth-century interpretations of ruin as applied to the images of Java’s abandoned temples that illustrated Thomas Stamford Raffles’ The History of Java. These images were surrounded by discourse on aesthetics, politics, and religion that served to reinforce British beliefs in their own cultural superiority, and Tiffin argues that this was particularly the case in Raffles’ book, which served as a retrospective justification of his administration and reflected his personal feelings of loss. In this review, I argue that Southeast Asia in Ruins raises interesting questions about the nature of historical objectivity, visual literacy and cross-cultural ruin appreciation that have relevance beyond the period examined by the book.

  5. Shifting wavelengths of ultraweak photon emissions from dying melanoma cells: their chemical enhancement and blocking are predicted by Cosic's theory of resonant recognition model for macromolecules.

    Science.gov (United States)

    Dotta, Blake T; Murugan, Nirosha J; Karbowski, Lukasz M; Lafrenie, Robert M; Persinger, Michael A

    2014-02-01

    During the first 24 h after removal from incubation, melanoma cells in culture displayed reliable increases in emissions of photons of specific wavelengths during discrete portions of this interval. Applications of specific filters revealed marked and protracted increases in infrared (950 nm) photons about 7 h after removal followed 3 h later by marked and protracted increases in near ultraviolet (370 nm) photon emissions. Specific wavelengths within the visible (400 to 800 nm) peaked 12 to 24 h later. Specific activators or inhibitors for specific wavelengths based upon Cosic's resonant recognition model elicited either enhancement or diminishment of photons at the specific wavelength as predicted. Inhibitors or activators predicted for other wavelengths, even within 10 nm, were less or not effective. There is now evidence for quantitative coupling between the wavelength of photon emissions and intrinsic cellular chemistry. The results are consistent with initial activation of signaling molecules associated with infrared followed about 3 h later by growth and protein-structural factors associated with ultraviolet. The greater-than-expected photon counts compared with raw measures through the various filters, which also function as reflective material to other photons, suggest that photons of different wavelengths might be self-stimulatory and could play a significant role in cell-to-cell communication.

  6. The ART of representation: Memory reduction and noise tolerance in a neural network vision system

    Science.gov (United States)

    Langley, Christopher S.

    The Feature Cerebellar Model Arithmetic Computer (FCMAC) is a multiple-input-single-output neural network that can provide three-degree-of-freedom (3-DOF) pose estimation for a robotic vision system. The FCMAC provides sufficient accuracy to enable a manipulator to grasp an object from an arbitrary pose within its workspace. The network learns an appearance-based representation of an object by storing coarsely quantized feature patterns. As all unique patterns are encoded, the network size grows uncontrollably. A new architecture is introduced herein, which combines the FCMAC with an Adaptive Resonance Theory (ART) network. The ART module categorizes patterns observed during training into a set of prototypes that are used to build the FCMAC. As a result, the network no longer grows without bound, but constrains itself to a user-specified size. Pose estimates remain accurate since the ART layer tends to discard the least relevant information first. The smaller network performs recall faster, and in some cases is better for generalization, resulting in a reduction of error at recall time. The ART-Under-Constraint (ART-C) algorithm is extended to include initial filling with randomly selected patterns (referred to as ART-F). In experiments using a real-world data set, the new network performed equally well using less than one tenth the number of coarse patterns as a regular FCMAC. The FCMAC is also extended to include real-valued input activations. As a result, the network can be tuned to reject a variety of types of noise in the image feature detection. A quantitative analysis of noise tolerance was performed using four synthetic noise algorithms, and a qualitative investigation was made using noisy real-world image data. In validation experiments, the FCMAC system outperformed Radial Basis Function (RBF) networks for the 3-DOF problem, and had accuracy comparable to that of Principal Component Analysis (PCA) and superior to that of Shape Context Matching (SCM), both

  7. Nordic (Art) Photography

    DEFF Research Database (Denmark)

    Sandbye, Mette

    2013-01-01

    A description of the rise of the role of photography on the Scandinavian art scene the last 25 years......A description of the rise of the role of photography on the Scandinavian art scene the last 25 years...

  8. MUF architecture /art London

    DEFF Research Database (Denmark)

    Svenningsen Kajita, Heidi

    2009-01-01

    Om MUF architecture samt interview med Liza Fior og Katherine Clarke, partnere i muf architecture/art......Om MUF architecture samt interview med Liza Fior og Katherine Clarke, partnere i muf architecture/art...

  9. Visual Arts and Handicrafts.

    Science.gov (United States)

    Winkel, Lois

    1998-01-01

    Lists recommended book titles for children on art, crafts, artists, optical illusions, and drawing. Provides the address for a Web site featuring art activities and information about artists for children. (PEN)

  10. Fine Arts Database (FAD)

    Data.gov (United States)

    General Services Administration — The Fine Arts Database records information on federally owned art in the control of the GSA; this includes the location, current condition and information on artists.

  11. Advances in magnetic resonance 2

    CERN Document Server

    Waugh, John S

    2013-01-01

    Advances in Magnetic Resonance, Volume 2, features a mixture of experimental and theoretical contributions. The book contains four chapters and begins with an ambitious and general treatment of the problem of signal-to-noise ratio in magnetic resonance. This is followed by separate chapters on the interpretation of nuclear relaxation in fluids, with special reference to hydrogen; and various aspects of molecular theory of importance in NMR.

  12. Introductory photoemission theory

    International Nuclear Information System (INIS)

    Arai, Hiroko; Fujikawa, Takashi

    2010-01-01

    An introductory review is presented on the basis of many-body scattering theory. Some fundamental aspects of photoemission theory are discussed in detail. A few applications are also discussed; photoelectron diffraction, depth distribution function and multi-atom resonant photoemission are also discussed briefly. (author)

  13. Careers in Culinary Arts

    OpenAIRE

    Murphy, James Peter

    2016-01-01

    The purpose of this presentation was to give individuals interested in pursuing a career in culinary arts the advice and access to education surrounding this field. Culinary arts covers the multidisciplinary field and areas of practice and study which includes culinary performing arts (cooking), gastronomy (food studies), bakery and pastry arts, food and beverage studies (bar, restaurant, barista), wine studies , food product development and health, hygiene and nutrition. So many individuals ...

  14. Artfulness i Vejle

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    2011-01-01

    this is the closing report, summing up findings from different qualitative case studies on the workings of the arts in learning. The background ethnographic research followed several arts-project in Danish public schools.......this is the closing report, summing up findings from different qualitative case studies on the workings of the arts in learning. The background ethnographic research followed several arts-project in Danish public schools....

  15. Aesthetic emotions to art - What they are and what makes them special. Comment on "The quartet theory of human emotions: An integrative and neurofunctional model" by S. Koelsch et al.

    Science.gov (United States)

    Leder, Helmut; Markey, Patrick S.; Pelowski, Matthew

    2015-06-01

    Establishing a functional understanding of emotional processes is crucial for profound insight into human cognition and behavior [6]. The study of human interactions with art provides an excellent window into the complex emotional reactions that can be had with the environment. Recent advances in the empirical study of art reception have given rise to new models [8,9], and a growing interest in aesthetic affect and emotion.

  16. From soil in art towards Soil Art

    Science.gov (United States)

    Feller, C.; Landa, E. R.; Toland, A.; Wessolek, G.

    2015-02-01

    The range of art forms and genres dealing with soil is wide and diverse, spanning many centuries and artistic traditions, from prehistoric painting and ceramics to early Renaissance works in Western literature, poetry, paintings, and sculpture, to recent developments in cinema, architecture and contemporary art. Case studies focused on painting, installation, and cinema are presented with the view of encouraging further exploration of art about, in, with, or featuring soil or soil conservation issues, created by artists, and occasionally scientists, educators or collaborative efforts thereof.

  17. Design for Visual Arts.

    Science.gov (United States)

    Skeries, Larry

    Experiences suggested within this visual arts packet provide high school students with awareness of visual expression in graphic design, product design, architecture, and crafts. The unit may be used in whole or in part and includes information about art careers and art-related jobs found in major occupational fields. Specific lesson topics…

  18. Arts and Technology

    DEFF Research Database (Denmark)

    This book constitutes the thoroughly refereed post-conference proceedings of the Second International Conference on Arts and Technology, ArtsIT 2011, which was held in December 2011 in Esbjerg, Denmark. The 19 revised full papers and the two poster papers cover various topics such as Interaction...... and Art, Music and Performance, and Digital Technology....

  19. Art and Money

    NARCIS (Netherlands)

    Goetzmann, W.; Renneboog, L.D.R.; Spaenjers, C.

    2010-01-01

    This paper investigates the impact of equity markets and top incomes on art prices. Using a newly constructed art market index, we demonstrate that equity market returns have had a significant impact on the price level in the art market over the last two centuries. We also find empirical evidence

  20. Art and money

    NARCIS (Netherlands)

    Goetzmann, W.; Renneboog, L.D.R.; Spaenjers, C.

    2011-01-01

    This paper investigates the impact of equity markets and top incomes on art prices. Using a newly constructed art market index, we demonstrate that equity market returns have had a significant impact on the price level in the art market over the last two centuries. We also find evidence that an

  1. African Art Teaching Strategies.

    Science.gov (United States)

    Chanda, Jacqueline

    Three different models for the teaching of African art are presented in this paper. A comparison of the differences between the approaches of Western art historians and African art historians informs the articulation of the three models--an approach for determining style, another for dealing with analysis, and a third for synthetic interpretation.…

  2. Model-free nuclear magnetic resonance study of intermolecular free energy landscapes in liquids with paramagnetic Ln3+ spotlights: theory and application to Arg-Gly-Asp.

    Science.gov (United States)

    Fries, Pascal H

    2012-01-28

    We propose an easily applicable method for investigating the pair distribution function of a lanthanide Ln(3+) complex LnL (L = ligand) with respect to any solvent or solute molecule A carrying observable nuclear spins. Let r be the distance of Ln(3+) to the observed nuclear spin I. We derive a simple expression of the experimental value of the configurational average of 1/r(6) in terms of longitudinal paramagnetic relaxation (rate) enhancements (PREs) of the spin I measured on a standard high-resolution NMR spectrometer and due to well-chosen concentrations of LnL complexes in which Ln(3+) is a fast-relaxing paramagnetic lanthanide or the slowly-relaxing gadolinium Gd(3+). The derivation is justified in the general case of a molecule A which is by turns in a bound state where it follows the complex and a free state where it moves independently. It rests on the expression of the underlying PRE theory in terms of the angle-dependent pair distribution function of LnL and A. The simplifications of this theory in the high-field regime and under the condition of fast exchange between bound and free states are carefully discussed. We also show that original information on the angle dependence of the molecular pair distribution function can be gained from the measured paramagnetic dipolar shifts induced by complexed fast-relaxing Ln(3+) ions. The method is illustrated by the case study of the anionic Lnttha(3-) = [Ln(3+)(ttha)](3-) (ttha(6-) = triethylene tetraamine hexacetate) complex interacting with the biologically important tripeptide Arg-Gly-Asp (RGD) which carries peripheral ionic groups. The usefulness of an auxiliary reference outer sphere probe solute is emphasized. © 2012 American Institute of Physics

  3. Mathematics for the liberal arts

    CERN Document Server

    Brown, Jason I

    2014-01-01

    The Math in Your Life Health, Safety, and Mathematics Found in Translation The Essentials of Conversion Making Sense of Your World with Statistics Summarizing Data with a Few Good Numbers Estimating Unknowns Leading You Down the Garden Path with Statistics Visualizing with Mathematics Seeing Data A Graph Is Worth a Thousand Words Money and Risk Money - Now or Later Risk Taking and Probability The Life in Your Math! Deciding to Make the Best Decisions Making the Right Choices for You Game Theory - Coming Out on Top Making Joint Decisions Art Imitating Math The Math that Makes the Art Believing What You See (or Not) The Mathematics of Sound (and the Sound of Mathematics) The Mathematics of Listening The Mathematics of Composing Solving Musical Mysteries with MSI (Math Scene Investigations) Late Night Mathematics - Humor and Philosophy Laughing with Mathematics The Limits of Mathematics Bibliography Index Review questions appear at the end of each chapter.

  4. Advances in magnetic resonance 1

    CERN Document Server

    Waugh, John S

    2013-01-01

    Advances in Magnetic Resonance, Volume 1, discusses developments in various areas of magnetic resonance. The subject matter ranges from original theoretical contributions through syntheses of points of view toward series of phenomena to critical and painstaking tabulations of experimental data. The book contains six chapters and begins with a discussion of the theory of relaxation processes. This is followed by separate chapters on the development of magnetic resonance techniques for studying rate processes in chemistry and the application of these techniques to various problems; the geometri

  5. Resonant state expansions

    International Nuclear Information System (INIS)

    Lind, P.

    1993-02-01

    The completeness properties of the discrete set of bound state, virtual states and resonances characterizing the system of a single nonrelativistic particle moving in a central cutoff potential is investigated. From a completeness relation in terms of these discrete states and complex scattering states one can derive several Resonant State Expansions (RSE). It is interesting to obtain purely discrete expansion which, if valid, would significantly simplify the treatment of the continuum. Such expansions can be derived using Mittag-Leffler (ML) theory for a cutoff potential and it would be nice to see if one can obtain the same expansions starting from an eigenfunction theory that is not restricted to a finite sphere. The RSE of Greens functions is especially important, e.g. in the continuum RPA (CRPA) method of treating giant resonances in nuclear physics. The convergence of RSE is studied in simple cases using square well wavefunctions in order to achieve high numerical accuracy. Several expansions can be derived from each other by using the theory of analytic functions and one can the see how to obtain a natural discretization of the continuum. Since the resonance wavefunctions are oscillating with an exponentially increasing amplitude, and therefore have to be interpreted through some regularization procedure, every statement made about quantities involving such states is checked by numerical calculations.Realistic nuclear wavefunctions, generated by a Wood-Saxon potential, are used to test also the usefulness of RSE in a realistic nuclear calculation. There are some fundamental differences between different symmetries of the integral contour that defines the continuum in RSE. One kind of symmetry is necessary to have an expansion of the unity operator that is idempotent. Another symmetry must be used if we want purely discrete expansions. These are found to be of the same form as given by ML. (29 refs.)

  6. "Anything Goes": The Work of Art and the Historical Future

    OpenAIRE

    Danto, Arthur; Altieri, Charles; Wagner, Anne M; Cascardi, Anthony J

    1997-01-01

    We have reached the end of the history of art, says Arthur Danto. Contemporary arts exist laterally in such a myriad of forms and theories that one can no longer give art's progression a narrative format. Danto's essay, and the discussions that follow it, explores the ramifications of this position. While modernism sought after what art itself is, what it is in its essence, and thus opened up diverse forms of exploration, this alone cannot explain how we got to the state of art as it is now, ...

  7. Art Priori = Art Priori / Kristel Jakobson

    Index Scriptorium Estoniae

    Jakobson, Kristel, 1983-

    2015-01-01

    Restoran Art Priori Tallinna vanalinnas Olevimägi 7. Sisekujunduse autor Kristel Jakobson (Haka Disain). Eesti Sisearhitektide Liidu aastapreemia 2014/2015 parima restorani eest. Lühidalt Kristel Jakobsonist

  8. Street-art

    OpenAIRE

    Rybnikářová, Klára

    2009-01-01

    This thesis is concerned with the street-art and graffiti phenomenon. The theoretical research is focused on presenting the essence and character of this art style, while also watching it from socio-cultural point of view and observing it in context of art history. The theoretical study is followed by the didactical part of thesis, where I present possibilities of using the street-art theme in art education programs in the school setting. My thesis is concluded with a discussion of a practica...

  9. Critical Zen art history

    Directory of Open Access Journals (Sweden)

    Gregory P. A. Levin

    2016-12-01

    Full Text Available This essay sketches a history of the study of Zen art from the late nineteenth century to post-war reconsiderations, leading towards what I term “critical Zen art studies.” The latter, I suggest, has been undertaken by historians of art and others to challenge normative definitions of Zen art based on modern constructs, revise understanding of the types and functions of visual art important to Chan/Sŏn/Zen Buddhist monasteries, and study iconographies and forms not as a transparent aesthetic indices to Zen Mind or No Mind but as rhetorically, ritually, and socially complex, even unruly, events of representation.

  10. Evalutive Descriptions of Art

    Directory of Open Access Journals (Sweden)

    Nataša Lah

    2016-01-01

    Full Text Available Taking into account the fact that, throughout history, certain artworks have been considered as “worth of watching” (according to the Greek etymon ἀξιοϑέατος / aksioteatos, preservation, or theorizing, while others were not, one is led to investigate the various types of evaluative descriptions. Those artworks that are more valuable than others, or simply valuable in themselves on the basis of rather specific features, have always represented the paradigmatic model for the evaluator, thus revealing the identitary nature of value as different from one epoch to another. Our aim has been to discern, with regard to this starting point, the way in which the process of evaluating artworks fits the general matrix of the universal theory of value, with its clearly distinguished levels of evaluation, beginning with value descriptions, continuing through the features of evaluation or abstract qualities of values extracted from these descriptions, and ending with value norms or systems of accepted generalizations in evaluation. Value standpoints in such an evaluation matrix represent dispositions or preferences in procedures, which reflect the norms or signifying concepts of the time. Corresponding procedures, or applications of the hierarchicized signification of artworks, are manifested in all known forms of artwork assessment: attribution, institutionalization, and setting of priorities in terms of exhibition, conservation, acquisition, restoration, and so on. Research in the history of European art-historical ideas has corroborated the hypothesis that, prior to the late 18th century, clear normative patterns were applied when it came to the evaluation of artworks. However, with the emergence of early Romanticism, this could no longer be done in the traditional way. Before the period in question, visual art was created (regardless of some stylistic discrepancies between individual authors and classified according to well-defined thematic

  11. A Combined Probe-Molecule, Mössbauer, Nuclear Resonance Vibrational Spectroscopy, and Density Functional Theory Approach for Evaluation of Potential Iron Active Sites in an Oxygen Reduction Reaction Catalyst

    Energy Technology Data Exchange (ETDEWEB)

    Kneebone, Jared L. [Univ. of Rochester, Rochester, NY (United States); Daifuku, Stephanie L. [Univ. of Rochester, Rochester, NY (United States); Kehl, Jeffrey A. [Univ. of Rochester, Rochester, NY (United States); Wu, Gang [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Chung, Hoon T. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Hu, Michael Y. [Argonne National Lab. (ANL), Argonne, IL (United States); Alp, E. Ercan [Argonne National Lab. (ANL), Argonne, IL (United States); More, Karren L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Zelenay, Piotr [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Holby, Edward F. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Neidig, Michael L. [Univ. of Rochester, Rochester, NY (United States)

    2017-07-06

    While non-precious metal M-N-C (M = Fe or Co) catalysts have been developed that are effective for the oxygen reduction reaction in polymer electrolyte fuel cells, no consensus has yet been reached regarding the nature of the M sites in these heterogeneous catalysts that are responsible for reaction with dioxygen (O2). While multiple studies have developed correlations between Fe distributions in as-prepared catalysts and ORR activity, the direct identification of sites reactive towards O2 or O2-analog molecules remains a significant challenge. In the present study, we demonstrate a new approach to identifying and characterizing potential Fe active sites in complex ORR catalysts that combines an effective probe molecule (NO(g)) Mössbauer spectroscopy and nuclear resonance vibrational spectroscopy (NRVS) with density functional theory (DFT) calculations. Mössbauer spectroscopic studies demonstrate that NO(g) treatment of electrochemically reduced PANI-57Fe-C leads to selective reaction with only a sub-set of the Fe species present. Nuclear resonance vibrational spectroscopic studies identified new Fe-ligand vibrations associated with the site reactive towards NO(g). DFT calculations of vibrational properties of a small selection of previously proposed active site structures suggest that graphene zig-zag edge hosted Fe-N structures may be responsible for the observed vibrational behavior with NO(g) probe molecules. Moreover, such sites are likely also reactive to O2, possibly serving as the ORR active sites in the synthesized materials.

  12. Art and Architectural Space

    DEFF Research Database (Denmark)

    Unterrainer, Walter

    2014-01-01

    and its content. The urban and spatial question goes far beyond museums and other buildings for art: how in democratic societies should public spaces be supported by art and how can public art support ´cityness´ and meaning versus spaces of consumerism. Famous but egocentric buildings with the main......art and architectural space museums and other exhibition spaces or how artists learn to love architects Over the last two decades, innumerable new museums, art galleries and other exhibition spaces have been built and opened all over the globe. The most extreme growth happened in China, where...... historically considered even the mother of all arts) - but more relevant: what are appropriate architectural spaces for presenting, exhibiting, contemplating, reflecting, meditating, discussing, enjoying, dissenting, debating creations of art. Simplified, this is a question about the relation between package...

  13. Art and Architectural Space

    DEFF Research Database (Denmark)

    Unterrainer, Walter

    2014-01-01

    the number of museums went up from 300 by 1980 to estimated 3000 museums by 2015. In urban discourses, new museums and buildings for art have been considered as drivers for ´cultural sustainability´ of cities. The notion is diffuse and the reality is more an economic centred ´city branding´ to help...... the promotion of tourism. What surprises: in many cities, the buildings for art are better known and more published and discussed than the art they accommodate. A lot of them are considered as art objects. This raises two questions: How much is architecture itself a form of arts? (in Western architecture...... historically considered even the mother of all arts) - but more relevant: what are appropriate architectural spaces for presenting, exhibiting, contemplating, reflecting, meditating, discussing, enjoying, dissenting, debating creations of art. Simplified, this is a question about the relation between package...

  14. Fantastic art, Barr, surrealism

    Directory of Open Access Journals (Sweden)

    Tessel M. Bauduin

    2017-12-01

    Full Text Available In 1936 Alfred Barr, jr., curator-director of the Museum of Modern Art, New York, organised the first large-scale American show about dada and surrealism, which he named Fantastic Art, Dada, Surrealism. This show would have a considerable impact, not least because of its introduction of ‘fantastic’ as a category of visual art closely related to surrealism. But how and why did Barr arrive at this label? This article explores several sources, including surrealist lectures, early twentieth-century Belgian art history and art criticism, and art historical debates about form vs. content, south vs. north, and reason vs. fantasy. Some suggestion are made as to why Barr considered ‘fantastic’ relevant at that time, including to set it against Cubism and Abstract Art and to make a—partly political—point about the form/content-dichotomy and the validity of romanticism, sentiment and the fantastic.

  15. The Return of the Body: Performance Art and Art Education.

    Science.gov (United States)

    Green, Gaye Leigh

    1999-01-01

    Explains that performance art incorporates different artistic forms, emphasizes the process of art over the product, and blurs the line between life and art. Discusses the history of performance art, highlights the Performance Art, Culture, and Pedagogy Symposium, and provides examples of how to use performance art in the classroom. (CMK)

  16. Art Medium and Art Infrastructure Development in Contemporary Indonesian Art

    Directory of Open Access Journals (Sweden)

    A. Rikrik Kusmara

    2013-11-01

    Full Text Available This research review Indonesian contemporary artists that used the various media in the presentation in his works over the years since 2000 until now. Survey at Pameran Besar Indonesia "Manifesto" in May 2008, were around 670 Indonesian living artists, 350 are consistently professional artists, 41 artists who utilize a variety of media in each works and 6 of them are artists who used a various of media on their solo exhibition including combining conventional media with new media and installation approaches. 6 artists are analyzed on the structure of the media presentation configuration their used, and generally they used more than 3 types of media in their solo exhibition, first, painting/drawing, second, sculpture/object/installation, and third video/photography. In the study of each exhibition process, generally utilizing the curatorial and sponsored by promotor (gallery. This research shows a rapid development of economic infrastructure in Indonesian the art in 2000-an era with the emergence of many auction hall, a new generation of collectors and galleries, and the Asian art market and global orientation, it became one of the holding in contemporary art of Indonesia, has been shifting art situation from cultural appreciation in the era of 90-to an era to cultural production.

  17. Neutron resonance spectroscopy

    International Nuclear Information System (INIS)

    Gunsing, F.

    2005-06-01

    The present document has been written in order to obtain the diploma 'Habilitation a Diriger des Recherches'. Since this diploma is indispensable to supervise thesis students, I had the intention to write a document that can be useful for someone starting in the field of neutron resonance spectroscopy. Although the here described topics are already described elsewhere, and often in more detail, it seemed useful to have most of the relevant information in a single document. A general introduction places the topic of neutron-nucleus interaction in a nuclear physics context. The large variations of several orders of magnitude in neutron-induced reaction cross sections are explained in terms of nuclear level excitations. The random character of the resonances make nuclear model calculation predictions impossible. Then several fields in physics where neutron-induced reactions are important and to which I have contributed in some way or another, are mentioned in a first synthetic chapter. They concern topics like parity nonconservation in certain neutron resonances, stellar nucleosynthesis by neutron capture, and data for nuclear energy applications. The latter item is especially important for the transmutation of nuclear waste and for alternative fuel cycles. Nuclear data libraries are also briefly mentioned. A second chapter details the R-matrix theory. This formalism is the foundation of the description of the neutron-nucleus interaction and is present in all fields of neutron resonance spectroscopy. (author)

  18. Neutron resonance spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Gunsing, F

    2005-06-15

    The present document has been written in order to obtain the diploma 'Habilitation a Diriger des Recherches'. Since this diploma is indispensable to supervise thesis students, I had the intention to write a document that can be useful for someone starting in the field of neutron resonance spectroscopy. Although the here described topics are already described elsewhere, and often in more detail, it seemed useful to have most of the relevant information in a single document. A general introduction places the topic of neutron-nucleus interaction in a nuclear physics context. The large variations of several orders of magnitude in neutron-induced reaction cross sections are explained in terms of nuclear level excitations. The random character of the resonances make nuclear model calculation predictions impossible. Then several fields in physics where neutron-induced reactions are important and to which I have contributed in some way or another, are mentioned in a first synthetic chapter. They concern topics like parity nonconservation in certain neutron resonances, stellar nucleosynthesis by neutron capture, and data for nuclear energy applications. The latter item is especially important for the transmutation of nuclear waste and for alternative fuel cycles. Nuclear data libraries are also briefly mentioned. A second chapter details the R-matrix theory. This formalism is the foundation of the description of the neutron-nucleus interaction and is present in all fields of neutron resonance spectroscopy. (author)

  19. Multiquark Resonances

    CERN Document Server

    Esposito, A.; Polosa, A.D.

    2016-01-01

    Multiquark resonances are undoubtedly experimentally observed. The number of states and the amount of details on their properties has been growing over the years. It is very recent the discovery of two pentaquarks and the confirmation of four tetraquarks, two of which had not been observed before. We mainly review the theoretical understanding of this sector of particle physics phenomenology and present some considerations attempting a coherent description of the so called X and Z resonances. The prominent problems plaguing theoretical models, like the absence of selection rules limiting the number of states predicted, motivate new directions in model building. Data are reviewed going through all of the observed resonances with particular attention to their common features and the purpose of providing a starting point to further research.

  20. On the Spiritual Element in Arts Education.

    Science.gov (United States)

    Abbs, Peter

    1995-01-01

    Attempts a redefinition of spirituality and an incorporation of this into art education. Argues that symbolic and spiritual consciousness plays a crucial role in the works of artists as disparate as William Blake and Frida Kahlo. Criticizes the preeminence of scientific theory as a modern belief system. (MJP)

  1. Engaging with the Art & Science of Statistics

    Science.gov (United States)

    Peters, Susan A.

    2010-01-01

    How can statistics clearly be mathematical and yet distinct from mathematics? The answer lies in the reality that statistics is both an art and a science, and both aspects are important for teaching and learning statistics. Statistics is a mathematical science in that it applies mathematical theories and techniques. Mathematics provides the…

  2. High Energy Single Frequency Resonant Amplifier, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — This SBIR phase I project proposes a single frequency high energy resonant amplifier for remote sensing. Current state-of-art technologies can not provide all...

  3. Occupations and Professionalism in Art and Culture

    Directory of Open Access Journals (Sweden)

    Lennart G. Svensson

    2015-08-01

    Full Text Available The article introduces the topic of this special issue on artists and professionalism from the perspective of the sociology of the arts and culture, in order to demonstrate how the contributions significantly develop studies of professions in general. Some theoretical concepts are defined and discussed: culture, arts, occupations, professions, status, field, symbolic and social capital, emotional labour, and reversed economy. An illustration is used to demonstrate pricing in arts and what may explain it. There is a focus on the field of art with a brief comparison to the academic field. In this issue we find studies on artists, authors, and theatre actors, which provide significant contributions to these themes in theories and studies of professions.Keywords: creative industries, creative occupations, professions, status, field, symbolic and social capital 

  4. Start making sense: Art informing health psychology.

    Science.gov (United States)

    Kaptein, Ad A; Hughes, Brian M; Murray, Michael; Smyth, Joshua M

    2018-01-01

    Growing evidence suggests that the arts may be useful in health care and in the training of health care professionals. Four art genres - novels, films, paintings and music - are examined for their potential contribution to enhancing patient health and/or making better health care providers. Based on a narrative literature review, we examine the effects of passive (e.g. reading, watching, viewing and listening) and active (e.g. writing, producing, painting and performing) exposure to the four art genres, by both patients and health care providers. Overall, an emerging body of empirical evidence indicates positive effects on psychological and physiological outcome measures in patients and some benefits to medical training. Expressive writing/emotional disclosure, psychoneuroimmunology, Theory of Mind and the Common Sense Model of Self-Regulation are considered as possible theoretical frameworks to help incorporate art genres as sources of inspiration for the further development of health psychology research and clinical applications.

  5. Start making sense: Art informing health psychology

    Science.gov (United States)

    Hughes, Brian M; Murray, Michael; Smyth, Joshua M

    2018-01-01

    Growing evidence suggests that the arts may be useful in health care and in the training of health care professionals. Four art genres – novels, films, paintings and music – are examined for their potential contribution to enhancing patient health and/or making better health care providers. Based on a narrative literature review, we examine the effects of passive (e.g. reading, watching, viewing and listening) and active (e.g. writing, producing, painting and performing) exposure to the four art genres, by both patients and health care providers. Overall, an emerging body of empirical evidence indicates positive effects on psychological and physiological outcome measures in patients and some benefits to medical training. Expressive writing/emotional disclosure, psychoneuroimmunology, Theory of Mind and the Common Sense Model of Self-Regulation are considered as possible theoretical frameworks to help incorporate art genres as sources of inspiration for the further development of health psychology research and clinical applications. PMID:29552350

  6. Baryon Resonances

    International Nuclear Information System (INIS)

    Oset, E.; Sarkar, S.; Sun Baoxi; Vicente Vacas, M.J.; Ramos, A.; Gonzalez, P.; Vijande, J.; Martinez Torres, A.; Khemchandani, K.

    2010-01-01

    In this talk I show recent results on how many excited baryon resonances appear as systems of one meson and one baryon, or two mesons and one baryon, with the mesons being either pseudoscalar or vectors. Connection with experiment is made including a discussion on old predictions and recent results for the photoproduction of the Λ(1405) resonance, as well as the prediction of one 1/2 + baryon state around 1920 MeV which might have been seen in the γp→K + Λ reaction.

  7. Art Toys in the contemporary art scene

    Directory of Open Access Journals (Sweden)

    Laura Sernissi

    2014-03-01

    Full Text Available The Art Toys phenomenon, better known as Art Toy Movement, was born in China in the mid-nineties and quickly spread out to the rest of the world. The toys are an artistic production of serial sculpture, made by handcrafts or on an industrial scale. There are several types of toys, such as custom toys and canvas toys, synonyms of designer toys, although they are often defined according to the constituent material, such as vinyl toys (plastic and plush toys (fabric. Art toys are the heirs of an already pop-surrealist and neo-pop circuit, which since the eighties of the twentieth century has pervaded the Japanese-American art scene, winking to the playful spirit of the avant-garde of the early century. Some psychoanalytic, pedagogical and anthropological studies about “play theories”, may also help us to understand and identify these heterogeneous products as real works of art and not simply as collectible toys.

  8. Formal values and the essence of art

    Directory of Open Access Journals (Sweden)

    Ulrich Pfisterer

    2011-12-01

    Full Text Available Review of: Paul van den Akker, Looking for Lines. Theories on the Essence of Art and the Problem of Mannerism, Amsterdam: Amsterdam University Press 2010. The problem of the categorical definition of the nature of art was often regarded as the central challenge of art history. Paul van den Akker examines the history of this problem from the eighteenth century to the 1960s. Thus his book addresses ‘the essence of art history’. In order to do so, he uses the extremely contradictory discussions of ‘Mannerism’ and the use of the line in mannerist art as a relevant case study, and this is supplemented with extensive excursuses on historic concepts of ‘classical art’, of Renaissance painting, of medieval art, or connoisseurship. Johann Joachim Winckelmann, Heinrich Wölfflin, Alois Riegl and John Shearman play key roles in van den Akker’s book. The review mainly asks for the specificity of the analytical categories and the changing role of the visual material used by the antiquarians and early art historians from the later seventeenth to the early twentieth centuries to illustrate and accompany their texts and arguments.

  9. 108 AFRICAN ARTS AS BEDROCK OF AFRICAN PHILOSOPHY Ol ...

    African Journals Online (AJOL)

    Tracie1

    value system philosophy of life social contract morality myths rites rituals norms rules ideas cognitive mappings and theology” (Kanu 2013: 534). This points to the fact that African arts are not for arts' sake as it may Лe expounded Лy the west. This idea is a presupposition that it is only when there is a theory of art in place that ...

  10. Martial Arts Club

    CERN Multimedia

    Martial Arts Club

    2010-01-01

    In July 2010, after five years of activity, the CERN Martial Arts held its first international Bujutsu seminar, gathering more than 40 participants from France, Switzerland, Sweden and Japan. The seminar was led by Master Shimazu Kenji, world-renowned martial arts expert based in Tokyo and headmaster of the Yagyu Shingan Ryu school, present in Europe specifically for the occasion. During nine days, participants got to discover the wide array of Bujutsu techniques and traditions of an ancestral martial art that finds its roots in the art and lives of Japanese samurais. Covering such varied subjects as self-defense techniques (Jujitsu), swordsmanship (Kenjutsu), through to healing techniques and etiquette, it encompasses all aspects of a way of life that still find echoes in today's modern Japanese society. The CERN Martial Arts club wishes to thank particularly the CERN Clubs Committee and its president Rachel Bray for their support in organizing this event. The CERN Martial Arts club, led by Sylvai...

  11. Art, Technology and Nature

    DEFF Research Database (Denmark)

    Camilla Skovbjerg Paldam and Jacob Wamberg trace the Kantian heritage of radically separating art and technology, and inserting both at a distance to nature, suggesting this was a transient chapter in history. Thus, they argue, the present renegotiation between art, technology and nature is reminiscent......Since 1900, the connections between art and technology with nature have become increasingly inextricable. Through a selection of innovative readings by international scholars, this book presents the first investigation of the intersections between art, technology and nature in post-medieval times....... Transdisciplinary in approach, this volume’s 14 essays explore art, technology and nature’s shifting constellations that are discernible at the micro level and as part of a larger chronological pattern. Included are subjects ranging from Renaissance wooden dolls, science in the Italian art academies, and artisanal...

  12. ON THE RESONANT FREQUENCIES OF THE OJA

    African Journals Online (AJOL)

    Dr Obe

    1997-09-01

    Oja' (a traditional Nigerian musical instrument) is developed. Support for the theory is provided by data derived from experimentally measured spectra of typical oja tones. It is also shown that for resonant frequencies below about ...

  13. Arquitectura, arte funcional

    Directory of Open Access Journals (Sweden)

    Monjo Carrió, Juan

    1985-10-01

    Full Text Available The begining of this work is devoted to the analysis of the concepts of Art, Science and Technique and their historical evolution, distinguishing between "fine arts" and "technique arts". Following, Architect and Architecture terms are defined both conceptual and professionally, analysing as well its historical evolution and pointing out the interdependence between the architectural conception as "fine art" and the constructive technology as "technique art", finally reminding the necessary scientific base of this one (Construction Physics. Consequently, the need for architecture professionals of constructive technology knowledge, is also reminded. At last, the functional character of the Architecture (Architecture as a "functional art" is analysed, going over the three basic aspects of this functionality (Integrity-firmitas, Habitability-utilitas and Aesthetics-venustas.Se inicia el trabajo analizando los conceptos de Arte, Ciencia y Técnica y su evolución histórica, distinguiendo entre ¡as "bellas artes" y las "artes técnicas". A continuación se definen los conceptos de Arquitecto y Arquitectura, tanto conceptual como profesionalmente, analizando, asimismo, su evolución histórica y haciendo hincapié en la interdependencia entre la concepción arquitectónica como "bella arte" y la tecnología constructiva como "arte técnica", para terminar recordando la necesaria base científica de esta última (la Física de la Construcción. Como consecuencia, se recuerda la necesidad de los conocimientos de la tecnología constructiva en los arquitectos profesionales. Por último, se analiza el carácter funcional de la Arquitectura (Arquitectura como "arte funcional" y se hace un breve recorrido por los tres aspectos básicos de esa funcionalidad (Integridad-firmitas, Habitabilidad-utilitas y Estética-venustas.

  14. Migration into art

    DEFF Research Database (Denmark)

    Petersen, Anne Ring

    This book addresses a topic of increasing importance to artists, art historians and scholars of cultural studies, migration studies and international relations: migration as a profoundly transforming force that has remodelled artistic and art institutional practices across the world. It explores...... contemporary art's critical engagement with migration and globalisation as a key source for improving our understanding of how these processes transform identities, cultures, institutions and geopolitics. The author explores three interwoven issues of enduring interest: identity and belonging, institutional...

  15. Collaboration in Performing Arts

    OpenAIRE

    Langeveld, Cees; Belme, D.; Koppenberg, T.

    2014-01-01

    markdownabstract__Abstract__ As a result of declining government support, performing arts organisations (PAOs) face increased challenges and difficulties in the sector. They attempt to develop new ways of generating income and seek new models of organising the production and presentation of performing arts. Hereby, we can think of collaboration and integration as horizontal and vertical within the production chain of performing arts. There are various reasons for cultural organisations to dec...

  16. 996 RESONANCE November 2013

    Indian Academy of Sciences (India)

    IAS Admin

    996. RESONANCE. November 2013. Page 2. 997. RESONANCE. November 2013. Page 3. 998. RESONANCE. November 2013. Page 4. 999. RESONANCE. November 2013. Page 5. 1000. RESONANCE. November 2013. Page 6. 1001. RESONANCE. November 2013. Page 7. 1002. RESONANCE. November 2013 ...

  17. 817 RESONANCE September 2013

    Indian Academy of Sciences (India)

    IAS Admin

    817. RESONANCE ⎜ September 2013. Page 2. 818. RESONANCE ⎜ September 2013. Page 3. 819. RESONANCE ⎜ September 2013. Page 4. 820. RESONANCE ⎜ September 2013. Page 5. 821. RESONANCE ⎜ September 2013. Page 6. 822. RESONANCE ⎜ September 2013. Page 7. 823. RESONANCE ⎜ September ...

  18. 369 RESONANCE April 2016

    Indian Academy of Sciences (India)

    IAS Admin

    369. RESONANCE ⎜ April 2016. Page 2. 370. RESONANCE ⎜ April 2016. Page 3. 371. RESONANCE ⎜ April 2016. Page 4. 372. RESONANCE ⎜ April 2016. Page 5. 373. RESONANCE ⎜ April 2016. Page 6. 374. RESONANCE ⎜ April 2016. Page 7. 375. RESONANCE ⎜ April 2016.

  19. The magic of projection : augmentation and immersion in media art

    NARCIS (Netherlands)

    Ernst, S.J.G.

    2016-01-01

    Sophie Ernst’s doctoral thesis is an artist’s contribution to media art theory. It focusses on the role of projection as material for sculpture. Her research addresses the question in what manner are projections applied in contemporary art and what image traditions does this relate to. She considers

  20. Art Education and the Development of Self-Concept.

    Science.gov (United States)

    Hausman, Jerome J.

    References are often made in art education literature about how art can enhance individuals' self-concepts. This document discusses the work of authors, Manuel Barkan, George Herbert Mead, and Sigmund Freud, who support this concept. Barkan's theory concerning how an individual's personality develops and changes by interacting socially is…

  1. Understanding Language: A Primer for the Language Arts Teacher.

    Science.gov (United States)

    Malmstrom, Jean

    This volume aims to bridge the gap between language arts teaching and linguistic theory. Part one discusses selected aspects of linguistics that are relevant to language arts teaching: the acquisition and development of language during childhood; the English sound system and its relation to spellings and meanings; traditional, structural, and…

  2. African art: an impetus but implicit magnitude of architectural thought ...

    African Journals Online (AJOL)

    ... distinct in Modernist practice of African architecture. This, along with the curse of 'unaesthetic', could be better explained by the modern theory of fractal art; which is something beyond our conformist splendor. Keywords: African art, African artifacts, Fractals, Cultural Exchange, Stylistic Influences, Bauhausand Modernism ...

  3. Six Acts of Miscognition: Implications for Art Education

    Science.gov (United States)

    Tavin, Kevin M.

    2010-01-01

    Employing Lacanian theory as a necessary supplement to contemporary approaches in art education, this article provides a critique and response to art education discourse around "cognition." This response unfolds in six acts: (1) Unknown knowledge, (2) Unmeant knowledge, (3) Missing metaphors, (4) Stupidity, (5) Symptoms and sinthomes, and (6)…

  4. Revisioning Premodern Fine Art as Popular Visual Culture

    Science.gov (United States)

    Duncum, Paul

    2014-01-01

    Employing the concept of a rhetoric of emotions, European Premodern fine art is revisioned as popular culture. From ancient times, the rhetoric of emotion was one of the principle concepts informing the theory and practice of all forms of European cultural production, including the visual arts, until it was gradually displaced during the 1700s and…

  5. Video Games as Reconstructionist Sites of Learning in Art Education

    Science.gov (United States)

    Parks, Nancy S.

    2008-01-01

    Art education has been in the midst of a transformation shaped by several factors, including changes in contemporary art theories, political and economic factors, and technological developments. Film, music videos, advertisements, video games and other forms of popular culture are shaping how students learn today. Discussions about video gaming…

  6. Information Architecture and the Comic Arts: Knowledge Structure and Access

    Science.gov (United States)

    Farmer, Lesley S. J.

    2015-01-01

    This article explains information architecture, focusing on comic arts' features for representing and structuring knowledge. Then it details information design theory and information behaviors relative to this format, also noting visual literacy. Next , applications of comic arts in education are listed. With this background, several research…

  7. Computer Games and Art

    Directory of Open Access Journals (Sweden)

    Anton Sukhov

    2015-10-01

    Full Text Available This article devoted to the search of relevant sources (primary and secondary and characteristics of computer games that allow to include them in the field of art (such as the creation of artistic games, computer graphics, active interaction with other forms of art, signs of spiritual aesthetic act, own temporality of computer games, “aesthetic illusion”, interactivity. In general, modern computer games can be attributed to commercial art and popular culture (blockbuster games and to elite forms of contemporary media art (author’s games, visionary games.

  8. Art and Architectural Space

    DEFF Research Database (Denmark)

    Unterrainer, Walter

    2014-01-01

    art and architectural space museums and other exhibition spaces or how artists learn to love architects Over the last two decades, innumerable new museums, art galleries and other exhibition spaces have been built and opened all over the globe. The most extreme growth happened in China, where...... purpose of ´uniqueness´ often fail to be a ´home´, a large scale ´picture frame´ or a productive space for communicating art and even do not fulfil basic technical aspects in terms of a consistent indoor climate, optimized lighting or safety. The lecture will focus on inspiring examples of spaces for art...

  9. Stark resonances: asymptotics and distributional Borel sum

    International Nuclear Information System (INIS)

    Caliceti, E.; Grecchi, V.; Maioli, M.

    1993-01-01

    We prove that the Stark effect perturbation theory of a class of bound states uniquely determines the position and the width of the resonances by Distributional Borel Sum. In particular the small field asymptotics of the width is uniquely related to the large order asymptotics of the perturbation coefficients. Similar results apply to all the ''resonances'' of the anharmonic and double well oscillators. (orig.)

  10. Synchrobetatron resonances

    International Nuclear Information System (INIS)

    Anon.

    1977-01-01

    At the 1975 Particle Accelerator Conference it was reported that a class of resonances were observed in SPEAR II that had not appeared before in SPEAR I. These resonances occur when the betatron oscillation wave numbers ν/sub x/ or ν/sub y/ and the synchrotron wave number ν/sub s/ satisfy the relation (ν/sub x,y/ - mν/sub s/) = 5, with m an integer denoting the m/sup th/ satellite. The main difference between SPEAR II and SPEAR I is the value of ν/sub s/, which in SPEAR II is approximately 0.04, an order of magnitude larger than in SPEAR I. An ad hoc meeting was held at the 1975 Particle Accelerator Conference, where details of the SPEAR II results were presented and various possible mechanisms for producing these resonances were discussed. Later, experiments were performed at SPEAR to identify the mechanism believed to be the most likely explanation. Some of the current experimental knowledge and theoretical views on the source of these resonances are presented

  11. Autostereogram resonators

    Science.gov (United States)

    Leavey, Sean; Rae, Katherine; Murray, Adam; Courtial, Johannes

    2012-09-01

    Autostereograms, or "Magic Eye" pictures, are repeating patterns designed to give the illusion of depth. Here we discuss optical resonators that create light patterns which, when viewed from a suitable position by a monocular observer, are autostereograms of the three-dimensional shape of one of the mirror surfaces.

  12. art@CMS SciArt Workshops

    CERN Document Server

    Hoch, Michael; Preece, Stephen; Storr, Mick; Petrilli, Achille

    2017-01-01

    Recent developments in science education policy and practice suggest that successful learning in the 21st century requires the horizontal connectedness across areas of knowledge by linking the arts and humanities with science, technology, engineering and mathematics (STEM) subjects. The rapidly increasing STEAM movement calls for arts integration into science teaching and learning to help school students develop skills that are necessary to thrive in an innovation economy. Education and outreach in high - energy physics are not an exception to these developments. This paper outlines a series of learning activities for students at secondary and tertiary level that use a cross - disciplinary approach to fostering creativity and imagination in physics education and outreach.

  13. art@CMS SciArt Workshops

    CERN Document Server

    Hoch, Michael; Preece, Stephen; Storr, Mick; Petrilli, Achille

    2016-01-01

    Recent developments in science education policy and practice suggest that successful learning in the 21st century requires the horizontal connectedness across areas of knowledge by linking the arts and humanities with science, technology, engineering and mathematics (STEM) subjects. The rapidly increasing STEAM movement calls for arts integration into science teaching and learning to help school students develop skills that are necessary to thrive in an innovation economy. Education and outreach in high - energy physics are not an exception to these developments. This paper outlines a series of learning activities for students at secondary and tertiary level that use a cross - disciplinary approach to fostering creativity and imagination in physics education and outreach.

  14. Institutions and Legitimations in Finance for the Arts

    DEFF Research Database (Denmark)

    Lunde Jørgensen, Ida

    The thesis contributes to a more nuanced understanding of art support by investigating the underlying legitimations and institutional logics of two of the most significant foundations supporting visual art, in Denmark, the private New Carlsberg Foundation and public Danish Arts Foundation. Drawing......, cultural and institutional entrepreneurship, institutional logics, and rhetorical work to address a number of key debates in cultural policy pertaining to the evaluation of aesthetic performance, the justification of investment in the arts and how ideas and meanings become taken for granted in the cultural...... of art support in the New Carlsberg Foundation and the Danish Arts Foundation at critical points in time, drawing on and contributing to the literature on institutional logics and convention theory. Specifically, the thesis shows the importance of nine particular logics of legitimation underlying art...

  15. Resonance – Journal of Science Education | Indian Academy of ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 8. Complex Systems: An Introduction - Information Theory, Chaos Theory and Computational Complexity. V K Wadhawan. General Article Volume 14 Issue 8 August 2009 pp 761-781 ...

  16. The developmental potential of art activities at the preschool age

    Directory of Open Access Journals (Sweden)

    Večanski Vera D.

    2017-01-01

    Full Text Available In traditional approaches to the teaching of art and arts activities at the preschool age, art has been viewed mostly in terms of emotional self-expression and development. According to this view, art and arts activities foster the development of creativity, imagination and emotions, but little consideration is given to their link to cognitive processes and to their synthetic character. In general education, art and arts activities are often relegated to marginal status. This paper presents a theoretical examination of the potential of arts activities to enhance the development of a well-rounded personality in children. Through a theoretical analysis of the relevant literature, research and ideas in recent theory which emphasize the synthetic character of art, the potential of arts activities in all segments of development and creativity at the preschool age has been examined. However, in obtaining the full benefit of arts activities in practice, the manner in which arts activities with children at this age are carried out is extremely important. Of particular importance in this process is the influence and role of early childhood educators, who should act as mediators, partners and co-explorers, facilitating, supporting, enriching and participating in the process of free exploration and creativity. Giving primacy to these roles of a teacher would help bring about a change in the child's position in early childhood education and would also change and expand the child's range of activities.

  17. Sequencing Events: Exploring Art and Art Jobs.

    Science.gov (United States)

    Stephens, Pamela Geiger; Shaddix, Robin K.

    2000-01-01

    Presents an activity for upper-elementary students that correlates the actions of archaeologists, patrons, and artists with the sequencing of events in a logical order. Features ancient Egyptian art images. Discusses the preparation of materials, motivation, a pre-writing activity, and writing a story in sequence. (CMK)

  18. Review on resonance cone fields

    International Nuclear Information System (INIS)

    Ohnuma, Toshiro.

    1980-02-01

    Resonance cone fields and lower hybrid heating are reviewed in this report. The resonance cone fields were reported by Fisher and Gould, and they proposed the use of the measurement of resonance cones and structure as a diagnostic tool to determine the plasma density and electron temperature in magnetoplasma. After the resonance cone, a wave-like disturbance persists. Ohnuma et al. have measured bending, reflection and ducting of resonance cones in detail. The thermal modes in inhomogeneous magnetoplasma were seen. The reflection of thermal mode near an electron plasma frequency layer and an insulating plate has been observed. The non-linear effects of resonance cones is reported. Monochromatic electron beam produces the noise of broad band whistler mode. Lower hybrid waves have been the subject of propagation from the edge of plasma to the lower hybrid layer. Linear lower hybrid waves were studied. The lower hybrid and ion acoustic waves radiated from a point source were observed. The parametric decay of finite-extent, cold electron plasma waves was studied. The lower hybrid cone radiated from a point source going along magnetic field lines was observed. Several experimental data on the lower hybrid heating in tokamak devices have been reported. The theories on resonance cones and lower hybrid waves are introduced in this report. (Kato, T.)

  19. Multicultural Arts: An Infusion.

    Science.gov (United States)

    Wilderberger, Elizabeth

    1991-01-01

    Presents two examples from 1990 curriculum guide written for Pullen School. Designed for middle school students, "The Japanese Gardener as Visual Artist" emphasizes nature in aesthetic depictions including architecture, horticulture, and visual arts. Appropriate for primary grades, "Reading/Language Arts: Using Books from the…

  20. When Curriculum Meets Art

    Science.gov (United States)

    Giardina, Nicola

    2016-01-01

    A three-year grant program at the Metropolitan Museum of Art in New York City encourages teachers to draw connections between curricular topics and works of art. In this article, museum educator Nicola Giardina describes how the program uses inquiry-based lessons to create meaningful learning experiences for underserved students. She highlights…

  1. Archaeology and art

    NARCIS (Netherlands)

    Corbey, R.H.A.; Layton, R.; Tanner, J.; Bintliff, J.

    2004-01-01

    Archaeologists have approached the study of art from several directions, drawing their inspiration variously from evolutionary biology, anthropology, and art history.We examine the strengths and weaknesses of each of these approaches and demonstrate the unique opportunities open to archaeology in

  2. Parallels in the Arts

    Science.gov (United States)

    Laffey, Grace

    1972-01-01

    A mini-course of nine weeks was organized as a laboratory course to survey relationships in literature, music, and art. Three periods in the arts (Romanticism, Impressionism, and Contemporary) were matched with three major activities; the basic areas of study and activity were poetry, short story, and novel. (Author)

  3. The Art of Mexico.

    Science.gov (United States)

    Saccardi, Marianne

    1997-01-01

    Provides an annotated bibliography of books for grades K and up which explores the folklore, poetry, fiction, and art of Mexico, and focuses on the Mayans and Aztecs and Diego Rivera and Frida Kahlo. Also suggests various research, reading, drama, music, social studies, physical education, and art activities and lists related videos and Internet…

  4. Migrating Art History

    DEFF Research Database (Denmark)

    Ørum, Tania

    2012-01-01

    Review of Hiroko Ikegami, The Great Migrator. Robert Rauschenberg and the Global Rise of American Art. Cambridge Mass., The MIT Press, 2010. 277 pages. ISBN 978-0-262-01425-0.......Review of Hiroko Ikegami, The Great Migrator. Robert Rauschenberg and the Global Rise of American Art. Cambridge Mass., The MIT Press, 2010. 277 pages. ISBN 978-0-262-01425-0....

  5. Geometry and Op Art.

    Science.gov (United States)

    Brewer, Evelyn J.

    1999-01-01

    Describes an activity in which students use computers and techniques from Op Art to learn various geometric concepts. Allows them to see the distinct connection between art and mathematics from a personal perspective. Reinforces writing, speaking, and drawing skills while creating slide shows related to the project. (ASK)

  6. Tangrams: Puzzles of Art

    Science.gov (United States)

    Fee, Brenda

    2009-01-01

    Challenging one's brain is the beginning of making great art. Tangrams are a great way to keep students thinking about their latest art project long after leaving the classroom. A tangram is a Chinese puzzle. The earliest known reference to tangrams appears in a Chinese book dated 1813, but the puzzles existed long before that date. The puzzle…

  7. Refocusing the Arts Aesthetic.

    Science.gov (United States)

    Bennefield, Robin M.

    1999-01-01

    African-American performing and visual-arts scholars comment on the continuing struggle to bring the work of black artists into the full view of the academy's white majority. Some feel the American art culture has been too slow to accept minority expression. Dance programs appear to be increasing in diversity faster than most other arts…

  8. Arte Brasileno Erudito y Arte Brasileno Popular. (Brazilian Fine Art and Brazilian Popular Art)

    Science.gov (United States)

    Valladares, Clarival Do Prado

    1969-01-01

    Class differences in Brazil explain the inequality between the art produced in the high strata of society and that originating in the economically inferior communities. Genuine expression of art degenerates for two reasons: the influence of modern industrial civilization and the tendency to satisfy the taste of the acquisitive group. (Author/MF)

  9. Culinary Arts Profile.

    Science.gov (United States)

    Missouri Univ., Columbia. Instructional Materials Lab.

    This chart is intended for use in documenting the fact that a student participating in a culinary arts program has achieved the performance standards specified in the Missouri Competency Profile for culinary arts. The chart includes space for recording basic student and instructor information and the student's on-the-job training and work…

  10. Art Meta-4

    DEFF Research Database (Denmark)

    Mehlsen, Camilla; Jensen, Hans Siggaard

    2003-01-01

    Managing through Variety: The European Style. 3rd European Academy of Management (EURAM) Conference , Milan (Italy). 2003 Short description: This paper focuses on the use of art metaphors in today?s world of management and organizational practice. Abstract: This paper focuses on the use of art me...

  11. Art-in-Design

    DEFF Research Database (Denmark)

    Degn Johansson, Troels

    This article outlines the author's continuous collaboration with the Danish art collective Superflex; an internationally recognised example of how contemporary art has taken interest in design practice in order to realise visions of change and empowerment. Setting off from Frayling's infamous...

  12. I: Making Art

    Science.gov (United States)

    Rosenfeld, Malke; Johnson, Marquetta; Plemons, Anna; Makol, Suzanne; Zanskas, Meghan; Dzula, Mark; Mahoney, Meg Robson

    2014-01-01

    Writing about the teaching artist practice should mean writing about art making. As both teacher and artist, the authors are required to be cognizant of their own art-making processes, both how it works and why it is important to them, in order to make this process visible to their students. They also need the same skills to write about how and…

  13. Messurement, Diagram, Art

    DEFF Research Database (Denmark)

    May, Michael; Stjernfelt, Frederik

    1996-01-01

    Discussion of the semiotic concept of the iconic sign according to Charles S. Peirce and its importance for the understanding of "diagrammatic reasoning" in science and art.......Discussion of the semiotic concept of the iconic sign according to Charles S. Peirce and its importance for the understanding of "diagrammatic reasoning" in science and art....

  14. Sentiment and art prices

    NARCIS (Netherlands)

    Penasse, J.N.G.; Renneboog, L.D.R.; Spaenjers, C.

    We hypothesize the existence of a slow-moving fad component in art prices. Using unique panel survey data on art market participants’ confidence levels in the outlook for a set of artists, we find that sentiment indeed predicts short-term returns.

  15. Art and Money

    NARCIS (Netherlands)

    Goetzmann, W.; Renneboog, L.D.R.; Spaenjers, C.

    2009-01-01

    This paper investigates the impact of equity markets and top incomes on art prices. Using a long-term art market index that incorporates information on repeated sales since the eighteenth century, we demonstrate that both same-year and lagged equity market returns have a significant impact on the

  16. Contemporary Danish book art

    DEFF Research Database (Denmark)

    Larsen, Poul Steen

    the Metropolitan Museum of Art, Thomas J. Watson Library, Helge Ernst, illustrator, Poul Kristensen, printer, Ole Olsen, bookbinder, exhibition catalog......the Metropolitan Museum of Art, Thomas J. Watson Library, Helge Ernst, illustrator, Poul Kristensen, printer, Ole Olsen, bookbinder, exhibition catalog...

  17. Art Education with Attitude

    Science.gov (United States)

    Williams, Jere

    2016-01-01

    Purpose: This paper explores the way in which art education advances the goals of citizenship education. In the first section of this paper the similarities between ethical and aesthetic concepts will be outlined and the visual art symbol system will be carefully examined. Findings: It will be argued that the transference of a value-adaptive…

  18. Emerging Art Markets

    NARCIS (Netherlands)

    Kraussl, R.G.W.; Logher, R.

    2010-01-01

    This paper analyzes the performance and risk-return characteristics of three major emerging art markets: Russia, China, and India. According to three national art market indices, built by hedonic regressions based on auction sales prices, the geometric annual returns are 10.00%, 5.70%, and 42.20%

  19. Art as Peace Building

    Science.gov (United States)

    Marshall, Laurie

    2014-01-01

    Art educators can "critique" senseless violence--mistreatment, exclusion, intimidation, bullying, violation, abuse, corruption, murder, and war--by unleashing the power of students' creativity. In this article, the author, sharing her philosophical context, discusses how art is preventative medicine with the power to transform the cycle…

  20. Cultivating Demand for the Arts: Arts Learning, Arts Engagement, and State Arts Policy

    Science.gov (United States)

    Zakaras, Laura; Lowell, Julia F.

    2008-01-01

    To shed light on the decline in demand for the nonprofit arts, the authors describe what it means to cultivate demand for the arts, examine how well U.S. institutions are serving this function, and discuss whether it is in the public interest to make such cultivation a higher priority than it has been in the past. The authors propose that a strong…