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Sample records for heavy magic number

  1. Magic Numbers

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    THE last digit of my home phone number in Beijing is 4. “So what?” European readers might ask.This was my attitude when I first lived in China; I couldn't understand why Chinese friends were so shocked at my indifference to the number 4. But China brings new discoveries every day, and I have since seen the light. I know now that Chinese people have their own ways of preserving their well being, and that they see avoiding the number 4 as a good way to stay safe.

  2. The magic of numbers

    CERN Document Server

    Bell, Eric Temple

    1991-01-01

    From one of the foremost interpreters for lay readers of the history and meaning of mathematics: a stimulating account of the origins of mathematical thought and the development of numerical theory. It probes the work of Pythagoras, Galileo, Berkeley, Einstein, and others, exploring how ""number magic"" has influenced religion, philosophy, science, and mathematics

  3. Analytic view at alpha clustering in even-even heavy nuclei near magic numbers 82 and 126

    Energy Technology Data Exchange (ETDEWEB)

    Ahmed, Saad M.S. [Universiti Kebangsaan Malaysia, School of Applied Physics, Faculty of Science and Technology, Selangor (Malaysia); University of Malaya, Department of Physics, Faculty of Science, Kuala Lumpur (Malaysia); University of Malaya, Quantum Science Centre, Department of Physics, Faculty of Science, Kuala Lumpur (Malaysia); Yahaya, Redzuwan; Radiman, Shahidan; Yasir, Muhamad Samudi [Universiti Kebangsaan Malaysia, School of Applied Physics, Faculty of Science and Technology, Selangor (Malaysia); Kassim, Hasan Abu; Khandaker, Mayeen Uddin [University of Malaya, Department of Physics, Faculty of Science, Kuala Lumpur (Malaysia); University of Malaya, Quantum Science Centre, Department of Physics, Faculty of Science, Kuala Lumpur (Malaysia)

    2015-02-01

    Most studies on the determination of the alpha-decay preformation factor have used decay formulae. The preformation factor is known to contain abundant information on the nuclear structure. The successful determination of the preformation factor through the cluster formation model (CFM) motivates this study to determine the factor for nuclei near the magic numbers and present results in an analytic study based on different comparisons and observations. The difference between preformation factors obtained from CFM and from the decay formula method is significant. The formula method is used for the entire process of alpha decay as a transition between two states, whereas CFM is applied for the initial state of alpha formation. The preformation factor obtained using CFM and clusterization state representation was first compared with that obtained from the decay formula. Results were used to investigate alpha formation in even-even heavy nuclei, including 72 < Z < 92 and 92 < N < 142, near the magic numbers Z = 82 and N = 126. The values of the preformation factor were discussed and explained in detail according to the clusterization state representation to describe the most possible states of ground-state nuclei. The alpha clustering described through CFM is found to be consistent with that described using the decay formula for the open-shell nuclei of N < 126. The presence of more nucleons in the open-shell nuclei results in lower probability for alpha clustering and lower value of the preformation factor. However, few nucleons beyond the closed shell can cause higher probability for alpha clustering and larger value of the preformation factor. The maximum and minimum of the alpha-cluster formation occur in the nucleus of the double-shell closure (with N = 126 and Z = 82) and in the nucleus of two protons and two neutrons more. This formation probability is sensitive to the subshells, leading to the possibility of more clusterization states, including core

  4. Magic Numbers in Protein Structures

    DEFF Research Database (Denmark)

    Lindgård, Per-Anker; Bohr, Henrik

    1996-01-01

    A homology measure for protein fold classes has been constructed by locally projecting consecutive secondary structures onto a lattice. Taking into account hydrophobic forces we have found a mechanism for formation of domains containing magic numbers of secondary structures and multipla of these ......A homology measure for protein fold classes has been constructed by locally projecting consecutive secondary structures onto a lattice. Taking into account hydrophobic forces we have found a mechanism for formation of domains containing magic numbers of secondary structures and multipla...

  5. Metallic Softness Influence on Magic Numbers of Clusters

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The metallic softness parameter αr0 determines the structure of the cluster and governs the rule of magic numbers. Using molecular dynamic method, the stable structures and magic numbers are determined for the clusters consisting of 13 up to 147 atoms in medium range Morse potentials, which is suitable for most of metals. As the number of atoms constituting the cluster increases, the stable structures undergo transition from face-centered (FC) to edge-centered (EC) structures. The magic numbers take ones of FC series before transition and take ones of EC series after that. The transition point from FC to EC structures depends on the value of softness parameter.

  6. What's Magic about Magic Numbers? Chunking and Data Compression in Short-Term Memory

    Science.gov (United States)

    Mathy, Fabien; Feldman, Jacob

    2012-01-01

    Short term memory is famously limited in capacity to Miller's (1956) magic number 7 plus or minus 2--or, in many more recent studies, about 4 plus or minus 1 "chunks" of information. But the definition of "chunk" in this context has never been clear, referring only to a set of items that are treated collectively as a single unit. We propose a new…

  7. More Magic Numbers in Anionic Titanium-carbon Mixed Clusters

    Institute of Scientific and Technical Information of China (English)

    ZHAU Huajin; LIU Bingchen; ZHOU Rufang; NI Guoquan

    2000-01-01

    @@ Met-Cars[1] and related transition metal-carbon clusters represent a latest breakthrough in gas phase cluster research following the discovery and macroscopic synthesis of fullerenes. Different kinds of structural growth patterns (SGPs) have been proposed to analyze the observed magic numbers of these transition metal-carbon mixed clusters, including the multicage SGP[2], the nanocrystal SGP[3], and the recent layered SGP[4]. Recording larger magic numbers will be of great help to test and distinguish between the various SGPs.

  8. Packing of protein structures in clusters with magic numbers

    DEFF Research Database (Denmark)

    Lindgård, Per-Anker; Bohr, Henrik

    1997-01-01

    of clusters containing magic numbers of secondary structures and multipla of these cluster. A scheme for the relation between the sequence information and the native fold is given. We have performed a statistical analysis of available protein structures and found agreement with the predicted preferred...

  9. Fascinating Fibonaccis: Mystery and Magic in Numbers.

    Science.gov (United States)

    Garland, Trudi Hammel

    This document presents activities and information related to Fibonacci numbers, which are based upon the Golden Ratio, in areas of the arts, sciences, and mathematics. The work is organized into eight chapters: (1) "Origins and Definitions"; (2) "Fibonacci Numbers in Nature"; (3) "Fibonacci Numbers in Art and…

  10. Estimating Magic Numbers Larger Than 126 by Fermi-Yang Liming Method

    Institute of Scientific and Technical Information of China (English)

    LI Xian-Hui; ZHOU Zhi-Ning; ZHONG Yu-Shu; YANG Ze-Sen

    2001-01-01

    The Fermi Yang Liming method is followed and developed to estimate new magic numbers in nuclei with a Woods Saxon density function. The calculated results predict that the magic number next to 126 should be around 184 and 258.

  11. The magic of a number system

    DEFF Research Database (Denmark)

    Elmasry, Amr Ahmed Abd Elmoneim; Jensen, Claus; Katajainen, Jyrki

    2010-01-01

    is 2 i-1, and hence we can implement a priority queue as a forest of heap-ordered complete binary trees. The resulting data structure guarantees O(1) worst-case cost per insert and O(lg n) worst-case cost per delete, where n is the number of elements stored. © 2010 Springer-Verlag Berlin Heidelberg....

  12. Cooperative Assembly of Magic Number C60-Au Complexes

    Science.gov (United States)

    Xie, Yang-Chun; Tang, Lin; Guo, Quanmin

    2013-11-01

    We report the assembly of magic number (C60)m-(Au)n complexes on the Au(111) surface. These complexes have a unique structure consisting of a single atomic layer Au island wrapped by a self-selected number (seven, ten, or twelve) of C60 molecules. The smallest structure consisting of 7 C60 molecules and 19 Au atoms, stable up to 400 K, has a preferred orientation on the surface. We propose a globalized metal-organic coordination mechanism for the stability of the (C60)m-(Au)n complexes.

  13. Cluster growing process and a sequence of magic numbers

    DEFF Research Database (Denmark)

    Solov'yov, Ilia; Solov'yov, Andrey V.; Greiner, Walter

    2003-01-01

    demonstrate that in this way all known global minimum structures of the Lennard-Jones (LJ) clusters can be found. Our method provides an efficient tool for the calculation and analysis of atomic cluster structure. With its use we justify the magic number sequence for the clusters of noble gas atoms......We present a new theoretical framework for modeling the cluster growing process. Starting from the initial tetrahedral cluster configuration, adding new atoms to the system, and absorbing its energy at each step, we find cluster growing paths up to the cluster sizes of more than 100 atoms. We...... and compare it with experimental observations....

  14. Magic

    Science.gov (United States)

    Willetts, Andrew; Gagliardi, Laura; Ioannou, Andrew G.; Skylaris, Chris-Kriton; Spencer, Steven; Handy, Nicholas C.; Simper, Adrian M.

    The nuclear industry has enormous challenges to address in understanding its waste products and their safe disposal. It is extremely expensive and difficult to work with such waste products. As computational chemistry has made so many advances in the last 30 years, the question arises as to whether it can start to answer some of the basic questions. It was in this context that British Nuclear Fuels plc approached the quantum chemistry group at the University of Cambridge. After initial considerations, it was decided to write an entirely new quantum chemistry package to address these fundamental problems. The MAGIC program has been written to model as accurately as possible the properties of heavy-atom (in particular, actinide) complexes in realistic environments. Major requirements were the need to include relativistic effects for which several investigations have been carried out by quantum chemists in recent years. A severe difficulty is the high angular momentum of the occupied orbitals in the actinides. It was also believed that it was very important to include the effects of electron correlation. Again much progress has been made by quantum chemists with this problem. Therefore this code was written to take into account all these advances in a simple enough way that calculations on realistic systems are possible. The program is the result of a collaboration between British Nuclear Fuels plc and the University of Cambridge. The program has been developed with a view to making the implementation of new ideas as straightforward as possible. Hence, the code has a simple modular structure. Individual modules may of course be combined in a script to run more complicated procedures, such as a self-consistent field (SCF) procedure. The aim of such an approach is to maximize the time spent in the science compared with that spent interfacing with the computer code. For the end user a simple graphical user interface through Cerius# is provided. Standard features of the

  15. Magic Numbers for Classical Lennard-Jones Cluster Heat Capacities

    CERN Document Server

    Frantz, D D

    1994-01-01

    Heat capacity curves as functions of temperature for classical atomic clusters bound by pairwise Lennard-Jones potentials were calculated for aggregate sizes from 4 to 24 using Monte Carlo methods. J-walking (or jump-walking) was used to overcome convergence difficulties due to quasi-ergodicity in the solid-liquid transition region. The heat capacity curves were found to differ markedly and nonmonotonically as functions of cluster size. Curves for N = 4, 5 and 8 consisted of a smooth, featureless, monotonic increase throughout the transition region, while curves for N = 7 and 15-17 showed a distinct shoulder in this region; the remaining clusters had distinguishable transition heat capacity peaks. The size and location of these peaks exhibited "magic number" behavior, with the most pronounced peaks occurring for magic number sizes of N = 13, 19 and 23. A comparison of the heat capacities with other cluster properties in the solid-liquid transition region that have been reported in the literature indicates par...

  16. Intriguing structures and magic sizes of heavy noble metal nanoclusters around size 55 governed by relativistic effect and covalent bonding

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, X. J.; Xue, X. L.; Jia, Yu [International Laboratory for Quantum Functional Materials of Henan and School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001 (China); Guo, Z. X. [International Laboratory for Quantum Functional Materials of Henan and School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001 (China); Department of Chemistry and London Centre for Nanotechnology, University College London, London WC1H (United Kingdom); Li, S. F., E-mail: sflizzu@zzu.edu.cn [International Laboratory for Quantum Functional Materials of Henan and School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001 (China); ICQD, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhang, Zhenyu, E-mail: zhangzy@ustc.edu.cn [ICQD, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Gao, Y. F., E-mail: ygao7@utk.edu [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States); Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

    2015-11-07

    Nanoclusters usually display exotic physical and chemical properties due to their intriguing geometric structures in contrast to their bulk counterparts. By means of first-principles calculations within density functional theory, we find that heavy noble metal Pt{sub N} nanoclusters around the size N = 55 begin to prefer an open configuration, rather than previously reported close-packed icosahedron or core-shell structures. Particularly, for Pt{sub N}, the widely supposed icosahedronal magic cluster is changed to a three-atomic-layered structure with D{sub 6h} symmetry, which can be well addressed by our recently established generalized Wulff construction principle (GWCP). However, the magic number of Pt{sub N} clusters around 55 is shifted to a new odd number of 57. The high symmetric three-layered Pt{sub 57} motif is mainly stabilized by the enhanced covalent bonding contributed by both spin-orbital coupling effect and the open d orbital (5d{sup 9}6s{sup 1}) of Pt, which result in a delicate balance between the enhanced Pt–Pt covalent bonding of the interlayers and negligible d dangling bonds on the cluster edges. These findings about Pt{sub N} clusters are also applicable to Ir{sub N} clusters, but qualitatively different from their earlier neighboring element Os and their later neighboring element Au. The magic numbers for Os and Au are even, being 56 and 58, respectively. The findings of the new odd magic number 57 are the important supplementary of the recently established GWCP.

  17. The sequence to hydrogenate coronene cations: A journey guided by magic numbers

    CERN Document Server

    Cazaux, Stéphanie; Rougeau, Nathalie; Reitsma, Geert; Hoekstra, Ronnie; Teillet-Billy, Dominique; Morisset, Sabine; Spaans, Marco; Schlathölter, Thomas

    2016-01-01

    The understanding of hydrogen attachment to carbonaceous surfaces is essential to a wide variety of research fields and technologies such as hydrogen storage for transportation, precise localization of hydrogen in electronic devices and the formation of cosmic H2. For coronene cations as prototypical Polycyclic Aromatic Hydrocarbon (PAH) molecules, the existence of magic numbers upon hydrogenation was uncovered experimentally. Quantum chemistry calculations show that hydrogenation follows a site-specific sequence leading to the appearance of cations having 5, 11, or 17 hydrogen atoms attached, exactly the magic numbers found in the experiments. For these closed-shell cations, further hydrogenation requires appreciable structural changes associated with a high transition barrier. Controlling specific hydrogenation pathways would provide the possibility to tune the location of hydrogen attachment and the stability of the system. The sequence to hydrogenate PAHs, leading to PAHs with magic numbers of H atoms att...

  18. The 3-Dimensional q-Deformed Harmonic Oscillator and Magic Numbers of Alkali Metal Clusters

    CERN Document Server

    Bonatsos, Dennis; Raychev, P P; Roussev, R P; Terziev, P A; Bonatsos, Dennis

    1999-01-01

    Magic numbers predicted by a 3-dimensional q-deformed harmonic oscillator with Uq(3) > SOq(3) symmetry are compared to experimental data for alkali metal clusters, as well as to theoretical predictions of jellium models, Woods--Saxon and wine bottle potentials, and to the classification scheme using the 3n+l pseudo quantum number. The 3-dimensional q-deformed harmonic oscillator correctly predicts all experimentally observed magic numbers up to 1500 (which is the expected limit of validity for theories based on the filling of electronic shells), thus indicating that Uq(3), which is a nonlinear extension of the U(3) symmetry of the spherical (3-dimensional isotropic) harmonic oscillator, is a good candidate for being the symmetry of systems of alkali metal clusters.

  19. Magic numbers in the music of Sofia Gubaidulina

    Directory of Open Access Journals (Sweden)

    Tsenova Valeria

    2002-01-01

    Full Text Available Sofia Gubaidulina's compositions are characterized by a special kind of symbolism and constructivism both based on numbers, i.e. mathematical proportions. In almost all her works so-called numerical plots can be detected. The proportions of the Fibonacci series provide a basis for many of her works composed since the beginning of the 1980s. In more recent times she used some rows derivating from the Fibonacci series, in particular the Lucas sequence.

  20. Seeking the purported magic number N= 32 with high-precision mass spectrometry

    CERN Document Server

    Kreim, S; Blaum, K; Bohm, Ch; Borgmann, Ch; Breitenfeldt, M; Cakirli, R B; Herfurth, F; Kowalska, M; Litvinov, Y; Lunney, D; Manea, V; Naimi, S; Neidherr, D; Rosenbusch, M; Schweikhard, L; Stanja, J; Stora, Th; Wienholtz, F; Wolf, R N; Zuber, K

    2011-01-01

    Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies o er a clear signature for the presence (or dis- appearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measure- ments of N = 34 isotones 58 Cr ( Z = 24), 55 Sc ( Z = 21) and 54 Ca ( Z = 20), as well as the N = 32 isotones 53 Sc and 52 Ca. We also propose measuring the mass of 60 Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-re ection time-of- ight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms.

  1. Seeking the purported magic number N= 32 with high-precision mass spectrometry

    CERN Multimedia

    Schweikhard, L C; Herfurth, F; Boehm, C; Manea, V; Blaum, K; Beck, D; Kowalska, M; Kreim, K D; Stanja, J; Audi, G; Rosenbusch, M; Wienholtz, F; Litvinov, Y

    Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies offer a clear signature for the presence (or disappearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measurements of N = 34 isotones $^{58}$Cr (Z = 24), $^{55}$Sc (Z = 21) and $^{54}$Ca (Z = 20), as well as the N = 32 isotones $^{53}$Sc and $^{52}$Ca. We also propose measuring the mass of $^{60}$Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-reflection time-of-flight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms.

  2. Two-dimensional magic numbers in mass abundances of photofragmented bimetallic clusters

    CERN Document Server

    Janssens, E; Neukermans, S; Silverans, R E; Lievens, P

    2003-01-01

    The stability of cationic gold clusters doped with one transition metal atom was investigated by a mass spectrometric analysis of fragments resulting from high fluence irradiation of a cluster beam. Strongly enhanced abundances are found for Au sub 5 X sup + , X = V, Mn, Cr, Fe, Co, Zn, which implies that these species are far more stable towards fragmentation than their neighbouring cluster sizes. Here we interpret the enhanced stability of these clusters within a shell model approach for two-dimensional (2D) systems: the number of delocalized electrons in Au sub 5 X sup + is six, which is a magic number for 2D systems. Quantum chemical calculations for Au sub N Zn sup + (N = 2-6) predict planar structures that are stabilized by the influence of the dopant atom. Also, the main features of the calculated molecular orbitals are well reproduced by a simple electron-in-a-box model. The present report constitutes the first observation of 2D magic numbers in size dependent properties of metal clusters.

  3. Temporal stability of magic-number metal clusters: beyond the shell closing model

    Science.gov (United States)

    Desireddy, Anil; Kumar, Santosh; Guo, Jingshu; Bolan, Michael D.; Griffith, Wendell P.; Bigioni, Terry P.

    2013-02-01

    The anomalous stability of magic-number metal clusters has been associated with closed geometric and electronic shells and the opening of HOMO-LUMO gaps. Despite this enhanced stability, magic-number clusters are known to decay and react in the condensed phase to form other products. Improving our understanding of their decay mechanisms and developing strategies to control or eliminate cluster instability is a priority, to develop a more complete theory of their stability, to avoid studying mixtures of clusters produced by the decay of purified materials, and to enable technology development. Silver clusters are sufficiently reactive to facilitate the study of the ambient temporal stability of magic-number metal clusters and to begin to understand their decay mechanisms. Here, the solution phase stability of a series of silver:glutathione (Ag:SG) clusters was studied as a function of size, pH and chemical environment. Cluster stability was found to be a non-monotonic function of size. Electrophoretic separations showed that the dominant mechanism involved the redistribution of mass toward smaller sizes, where the products were almost exclusively previously known cluster sizes. Optical absorption spectra showed that the smaller clusters evolved toward the two most stable cluster sizes. The net surface charge was found to play an important role in cluster stabilization although charge screening had no effect on stability, contrary to DLVO theory. The decay mechanism was found to involve the loss of Ag+ ions and silver glutathionates. Clusters could be stabilized by the addition of Ag+ ions and destabilized by either the addition of glutathione or the removal of Ag+ ions. Clusters were also found to be most stable in near neutral pH, where they had a net negative surface charge. These results provide new mechanistic insights into the control of post-synthesis stability and chemical decay of magic-number metal clusters, which could be used to develop design principles

  4. Modification of AMD wave functions and application to the breaking of the N=20 magic number

    Energy Technology Data Exchange (ETDEWEB)

    Kimura, Masaaki; Horiuchi, Hisashi [Kyoto Univ. (Japan). Dept. of Physics

    2001-09-01

    By using the deformed Gaussian instead of the spherical one, we have modified the AMD (Antisymmetrized Molecular Dynamics) wave functions. The calculation results with this modified AMD shows the drastic improvement of the deformation properties of Mg isotopes. This improvement means that this new version of AMD can treat the deformation of mean field properly than before and the deformation of mean field is important in Mg isotopes. With this new version of AMD, we have also calculated 32Mg in which the breaking of magic number N=20 is experimentally known. In this nucleus, {beta}-energy surface is also drastically changed by the modification AMD wave function. Our results show that this nucleus is indeed deformed and neutron's 2p2h state is dominant in its ground state. This ground state reproduces the experimental data and shows the breaking of the magic number N=20 clearly. Additionally, near the ground state, there is also very interesting state which has neutron's 4p4h structure and shows parity violating density distribution and cluster-like nature. (author)

  5. Structural rearrangements and magic numbers in reactions between pyridine-containing water clusters and ammonia.

    Science.gov (United States)

    Ryding, Mauritz J; Ruusuvuori, Kai; Andersson, Patrik U; Zatula, Alexey S; McGrath, Matthew J; Kurtén, Theo; Ortega, Ismael K; Vehkamäki, Hanna; Uggerud, Einar

    2012-05-24

    Molecular cluster ions H(+)(H(2)O)(n), H(+)(pyridine)(H(2)O)(n), H(+)(pyridine)(2)(H(2)O)(n), and H(+)(NH(3))(pyridine)(H(2)O)(n) (n = 16-27) and their reactions with ammonia have been studied experimentally using a quadrupole-time-of-flight mass spectrometer. Abundance spectra, evaporation spectra, and reaction branching ratios display magic numbers for H(+)(NH(3))(pyridine)(H(2)O)(n) and H(+)(NH(3))(pyridine)(2)(H(2)O)(n) at n = 18, 20, and 27. The reactions between H(+)(pyridine)(m)(H(2)O)(n) and ammonia all seem to involve intracluster proton transfer to ammonia, thus giving clusters of high stability as evident from the loss of several water molecules from the reacting cluster. The pattern of the observed magic numbers suggest that H(+)(NH(3))(pyridine)(H(2)O)(n) have structures consisting of a NH(4)(+)(H(2)O)(n) core with the pyridine molecule hydrogen-bonded to the surface of the core. This is consistent with the results of high-level ab initio calculations of small protonated pyridine/ammonia/water clusters.

  6. Hindered proton collectivity in 28S: Possible magic number at Z=16

    CERN Document Server

    Togano, Y; Iwasa, N; Yamada, K; Motobayashi, T; Aoi, N; Baba, H; Bishop, S; Cai, X; Doornenbal, P; Fang, D; Furukawa, T; Ieki, K; Kawabata, T; Kanno, S; Kobayashi, N; Kondo, Y; Kuboki, T; Kume, N; Kurita, K; Kurokawa, M; Ma, Y G; Matsuo, Y; Murakami, H; Matsushita, M; Nakamura, T; Okada, K; Ota, S; Satou, Y; Shimoura, S; Shioda, R; Tanaka, K N; Takeuchi, S; Tian, W; Wang, H; Wang, J; Yoneda, K

    2012-01-01

    The reduced transition probability B(E2;0 ->2+) for 28S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e2fm4 is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M_n/M_p|/(N/Z) of the 0+ ->2+ transition in 28S was determined to be 1.9(2) by evaluating the M_n value from the known B(E2) value of the mirror nucleus 28Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T_z|=2 nucleus 28S.

  7. Magic Mirrors

    Science.gov (United States)

    Mills, Allan

    2011-01-01

    "Magic mirrors" were so named because, when they were positioned to throw a reflected patch of sunlight on a nearby wall, this area contained an outline of a design cast on the back of the (bronze) mirror. Investigations begun in the 19th century showed that this was a response to heavy localized pressures exerted on the face of the thin mirror…

  8. Unified description of magic numbers of metal clusters in terms of the 3-dimensional q-deformed harmonic oscillator

    CERN Document Server

    Bonatsos, Dennis; Lenis, D; Raychev, P P; Roussev, R P; Terziev, P A

    2000-01-01

    Magic numbers predicted by a 3-dimensional q-deformed harmonic oscillator with Uq(3)>SOq(3) symmetry are compared to experimental data for atomic clusters of alkali metals (Li, Na, K, Rb, Cs), noble metals (Cu, Ag, Au), divalent metals (Zn, Cd), and trivalent metals (Al, In), as well as to theoretical predictions of jellium models, Woods-Saxon and wine bottle potentials, and to the classification scheme using the 3n+l pseudo quantum number. In alkali metal clusters and noble metal clusters the 3-dimensional q-deformed harmonic oscillator correctly predicts all experimentally observed magic numbers up to 1500 (which is the expected limit of validity for theories based on the filling of electronic shells), while in addition it gives satisfactory results for the magic numbers of clusters of divalent metals and trivalent metals, thus indicating that Uq(3), which is a nonlinear extension of the U(3) symmetry of the spherical (3-dimensional isotropic) harmonic oscillator, is a good candidate for being the symmetry ...

  9. More on set-magic graphs

    Directory of Open Access Journals (Sweden)

    Ullas Thomas

    2015-07-01

    Full Text Available This paper contains certain properties of set-magic graphs and obtained the set-magic number of certain classes of graphs. All spanning super graphs of a set-magic graph always set-magic and all cycles and Hamiltonian graphs are set-magic. Also set-magic number of any cycle of size 2n is always greater than n.

  10. Ultrafast Magic-Angle Spinning: Benefits for the Acquisition of Ultrawide-Line NMR Spectra of Heavy Spin-1/2 Nuclei.

    Science.gov (United States)

    Pöppler, Ann-Christin; Demers, Jean-Philippe; Malon, Michal; Singh, Amit Pratap; Roesky, Herbert W; Nishiyama, Yusuke; Lange, Adam

    2016-03-16

    The benefits of the ultrafast magic-angle spinning (MAS) approach for the acquisition of ultrawide-line NMR spectra-spectral simplification, increased mass sensitivity allowing the fast study of small amounts of material, efficient excitation, and application to multiple heavy nuclei-are demonstrated for tin(II) oxide (SnO) and the tin complex [(LB)Sn(II) Cl](+) [Sn(II) Cl3 ](-) [LB=2,6-diacetylpyridinebis(2,6-diisopropylanil)] containing two distinct tin environments. The ultrafast MAS experiments provide optimal conditions for the extraction of the chemical-shift anisotropy tensor parameters, anisotropy, and asymmetry for heavy spin-1/2 nuclei.

  11. Priming psychic and conjuring abilities of a magic demonstration influences event interpretation and random number generation biases

    Directory of Open Access Journals (Sweden)

    Christine eMohr

    2015-01-01

    Full Text Available Magical ideation and belief in the paranormal is considered to represent a trait-like character; people either believe in it or not. Yet, anecdotes indicate that exposure to an anomalous event can turn sceptics into believers. This transformation is likely to be accompanied by altered cognitive functioning such as impaired judgements of event likelihood. Here, we investigated whether the exposure to an anomalous event changes individuals’ explicit traditional (religious and non-traditional (e.g. paranormal beliefs as well as cognitive biases that have previously been associated with non-traditional beliefs, e.g. repetition avoidance when producing random numbers in a mental dice task. In a classroom, 91 students saw a magic demonstration after their psychology lecture. Before the demonstration, half of the students were told that the performance was done respectively by a conjuror (magician group or a psychic (psychic group. The instruction influenced participants’ explanations of the anomalous event. Participants in the magician, as compared to the psychic group, were more likely to explain the event through conjuring abilities while the reverse was true for psychic abilities. Moreover, these explanations correlated positively with their prior traditional and non-traditional beliefs. Finally, we observed that the psychic group showed more repetition avoidance than the magician group, and this effect remained the same regardless of whether assessed before or after the magic demonstration. We conclude that pre-existing beliefs and contextual suggestions both influence people’s interpretations of anomalous events and associated cognitive biases. Beliefs and associated cognitive biases are likely flexible well into adulthood and change with actual life events.

  12. A relativistic mean-field study of magic numbers in light nuclei from neutron to proton drip-lines

    Indian Academy of Sciences (India)

    T K Jha; M S Mehta; S K Patra; B K Raj; Raj K Gupta

    2003-09-01

    In an axially deformed relativistic mean-field calculation of single-particle energy spectra of = 8 (Li–Mg) and = 14, 16 (C–Mg) isotonic chain and the one- and two-neutron separation energies of various isotopes of Li–Mg, new magic numbers are found to exist at = 6 and = 16 and/or = 14, which are in addition to the = 8 and = 20 magic numbers. In neutron-rich nuclei, the shell gap at = 6 is larger than at = 8 and a large gap is observed for = 16 or 14 for the neutron-rich and = 14 for proton-rich nuclei. Large shell gaps are also found to exist at = 14 and 16 or = 16 alone for nuclei near the -stability line. The above results are independent of the parameter sets TM2, NL3 and NL–SH used here. Similarly, new large shell gaps are predicted at = 6, 16 and/or 14 for protons.

  13. Lepton number violation by heavy Majorana neutrino in $B$ decays

    CERN Document Server

    Asaka, Takehiko

    2016-01-01

    Heavy Majorana neutrinos are predicted in addition to ordinary active neutrinos in the models with the seesaw mechanism. We investigate the lepton number violation (LNV) in $B$ decays induced by such a heavy neutrino $N$ with GeV-scale mass. Especially, we consider the decay channel $B^+ \\to \\mu^+ \\, N \\to \\mu^+ \\mu^+ \\pi^-$ and derive the sensitivity limits on the mixing angle $\\Theta_\\mu$ by the future search experiments at Belle II and in $e^+ e^-$ collisions at the Future Circular Collider (FCC-ee).

  14. Correlating the magic numbers of inorganic nanomolecular assemblies with a {Pd84} molecular-ring Rosetta Stone.

    Science.gov (United States)

    Xu, Feng; Miras, Haralampos N; Scullion, Rachel A; Long, De-Liang; Thiel, Johannes; Cronin, Leroy

    2012-07-17

    Molecular self-assembly has often been suggested as the ultimate route for the bottom-up construction of building blocks atom-by-atom for functional nanotechnology, yet structural design or prediction of nanomolecular assemblies is still far from reach. Whereas nature uses complex machinery such as the ribosome, chemists use painstakingly engineered step-by-step approaches to build complex molecules but the size and complexity of such molecules, not to mention the accessible yields, can be limited. Herein we present the discovery of a palladium oxometalate {Pd(84)}-ring cluster 3.3 nm in diameter; [Pd(84)O(42)(OAc)(28)(PO(4))(42)](70-) ({Pd(84)} ≡ {Pd(12)}(7)) that is formed in water just by mixing two reagents at room temperature, giving crystals of the compound in just a few days. The structure of the {Pd(84)}-ring has sevenfold symmetry, comprises 196 building blocks, and we also show, using mass spectrometry, that a large library of other related nanostructures is present in solution. Finally, by analysis of the symmetry and the building block library that construct the {Pd(84)} we show that the correlation of the symmetry, subunit number, and overall cluster nuclearity can be used as a "Rosetta Stone" to rationalize the "magic numbers" defining a number of other systems. This is because the discovery of {Pd(84)} allows the relationship between seemingly unrelated families of molecular inorganic nanosystems to be decoded from the overall cluster magic-number nuclearity, to the symmetry and building blocks that define such structures allowing the prediction of other members of these nanocluster families.

  15. Magic number behavior for heat capacities of medium sized classical Lennard-Jones clusters

    CERN Document Server

    Frantz, D D

    2001-01-01

    Monte Carlo methods were used to calculate heat capacities as functions of temperature for classical atomic clusters of aggregate sizes $25 \\leq N \\leq 60$ that were bound by pairwise Lennard-Jones potentials. The parallel tempering method was used to overcome convergence difficulties due to quasiergodicity in the solid-liquid phase-change regions. All of the clusters studied had pronounced peaks in their heat capacity curves, most of which corresponded to their solid-liquid phase-change regions. The heat capacity peak height and location exhibited two general trends as functions of cluster size: for $N = 25$ to 36, the peak temperature slowly increased, while the peak height slowly decreased, disappearing by $N = 37$; for $N = 30$, a very small secondary peak at very low temperature emerged and quickly increased in size and temperature as $N$ increased, becoming the dominant peak by $N = 36$. Superimposed on these general trends were smaller fluctuations in the peak heights that corresponded to ``magic numbe...

  16. Magic and Magical Worlds

    DEFF Research Database (Denmark)

    Børch, Marianne

    2013-01-01

    The article argues that where as Harry POtter lacks the " sense of the numinous" found in Tolkien and Pratchett, it has a special magic that plays upon the fantastic potential of language. Everyday language is full of metaphors, personifications, and strata of archaic beliefs; it has diversified...... discourse types (the use of Latin; technical terminology; class characteristics); and carries a great deal of associative cultural goods. Rowling is an expert in exploiting this - truly maical - aspect of human experience and thus shows how, merely in virtue of words, we all move in a magical world....

  17. Gluon number fluctuations with heavy quarks at HERA

    Institute of Scientific and Technical Information of China (English)

    ZHU Xiang-Rong; ZHOU Dai-Cui

    2011-01-01

    We study the effect of gluon number fluctuations (Pomeron loops) on the proton structure function at HERA.It is shown that the description of charm and bottom quarks and longitudinal structure functions are improved,with x2/d.o.f=0.803 (fluctuations) as compared with x2/d.o.f=0.908 (without fluctuations),once the gluon number fluctuations are included.We find that in the gluon number fluctuation case the heavy quarks do not play an important role in the proton structure function as the saturation model.The successful description of the HERA data indicates that the gluon number fluctuation could be one of the key mechanisms to describe the proton structure function at HERA energies.

  18. Magic and Magical Worlds

    DEFF Research Database (Denmark)

    Børch, Marianne

    2013-01-01

    The article argues that where as Harry POtter lacks the " sense of the numinous" found in Tolkien and Pratchett, it has a special magic that plays upon the fantastic potential of language. Everyday language is full of metaphors, personifications, and strata of archaic beliefs; it has diversified...

  19. Magic Physics?

    Science.gov (United States)

    Featonby, David

    2010-01-01

    This article examines several readily available "magic tricks" which base their "trickery" on physics principles, and questions the use of the word "magic" in the 21st century, both in popular children's science and in everyday language. (Contains 18 figures.)

  20. Magic Physics?

    Science.gov (United States)

    Featonby, David

    2010-01-01

    This article examines several readily available "magic tricks" which base their "trickery" on physics principles, and questions the use of the word "magic" in the 21st century, both in popular children's science and in everyday language. (Contains 18 figures.)

  1. Maruhn-Greiner Maximum for Confirmation of Low Energy Nuclear Reactions (LENR) via a Compound Nucleus with Double Magic Numbers

    Science.gov (United States)

    Hora, Heinrich; Miley, George

    2007-03-01

    One of the most convincing facts about LENR due to deuterons (ds) or protons of very high concentration in host metals of palladium is the measurement of the large scale minimum in the reaction probability with product elements centered around the nucleon number A = 153. The local maximum was measured in this region is similar to fission of uranium at A = 119 where the local maximum follows the Maruhn-Greiner mechanism^1. We suggest this phenomenon can be explained by the strong screening of the Maxwellian ds on the degenerate rigid electron background within the swimming electrons at the metal surface or thin filem interfaces. The deuterons behave like neutrals at distances of above 2 picometers (pm) and form clusters due to soft attraction in the range of thermal energy; 10 pm diameter clusters can react over long time scales (10^6 s) with Pd leading to double magic number compound nuclei 306x126 decaying via fission to an A=153 element distribution. J. Maruhn et al, Phys. Rev. Letters 32, 548 (1974) H. Hora, G.H. Miley, CzechJ. Phys. 48, 1111 (1998)

  2. How Archimedes Helped Students to Unravel the Mystery of the Magical Number Pi

    Science.gov (United States)

    Papadopoulos, Ioannis

    2014-01-01

    This paper describes a classroom experiment where students use techniques found in the history of mathematics to learn about an important mathematical idea. More precisely, sixth graders in a primary school follow Archimedes's method of exhaustion in order to compute the number p. Working in a computer environment, students inscribe and…

  3. Collinear Laser Spectroscopy on exotic Ca isotopes towards new magic numbers N=32 and N=34

    CERN Document Server

    AUTHOR|(CDS)2084516

    For more than a century physicists have been trying to understand the striking particularities of the atomic nucleus. Although several questions remain open for stable nuclei, our current interest for exploring the properties of exotic species has revealed new and unexpected aspects of nuclear structure. The study of nuclei at extreme conditions is not only relevant for nuclear physics, it can also provide answers to questions related to astrophysical processes such as the origin of elements in the universe and the limits of existence for nuclear matter. Besides the complexity of the nuclear many-body problem, nuclear structure properties exhibit regular patterns at the so called “magic” numbers of nucleons. The understanding of these apparently simple structures has motivated the development of some of the most elegant models of nuclear physics. Up to now, most of these models have been successfully applied to describe the properties of nuclei in specific regions of the nuclear chart. Even though some mo...

  4. Crystallization of Supercooled Liquid Elements Induced by Superclusters Containing Magic Atom Numbers

    Directory of Open Access Journals (Sweden)

    Robert F. Tournier

    2014-08-01

    Full Text Available A few experiments have detected icosahedral superclusters in undercooled liquids. These superclusters survive above the crystal melting temperature Tm because all their surface atoms have the same fusion heat as their core atoms, and are melted by liquid homogeneous and heterogeneous nucleation in their core, depending on superheating time and temperature. They act as heterogeneous growth nuclei of crystallized phase at a temperature Tc of the undercooled melt. They contribute to the critical barrier reduction, which becomes smaller than that of crystals containing the same atom number n. After strong superheating, the undercooling rate is still limited because the nucleation of 13-atom superclusters always reduces this barrier, and increases Tc above a homogeneous nucleation temperature equal to Tm/3 in liquid elements. After weak superheating, the most stable superclusters containing n = 13, 55, 147, 309 and 561 atoms survive or melt and determine Tc during undercooling, depending on n and sample volume. The experimental nucleation temperatures Tc of 32 liquid elements and the supercluster melting temperatures are predicted with sample volumes varying by 18 orders of magnitude. The classical Gibbs free energy change is used, adding an enthalpy saving related to the Laplace pressure change associated with supercluster formation, which is quantified for n = 13 and 55.

  5. Spontaneous emission of heavy clusters

    Energy Technology Data Exchange (ETDEWEB)

    Poenaru, D.N.; Ivascu, M. (Central Inst. of Physics, Bucharest (Romania)); Sandulescu, A. (Joint Inst. for Nuclear Research, Dubna (USSR)); Greiner, W. (Frankfurt Univ. (Germany, F.R.))

    1984-08-01

    The lifetimes of some heavy nuclei relative to the spontaneous emission of various clusters heavier than the alpha particle are estimated with a model extended from the fission theory of alpha decay, showing that this phenomenon is a new manifestation of the nuclear shell structure. A greater probability is obtained for parent-heavy-cluster combinations leading to a magic or almost magic daughter nucleus. The analytical formula obtained allows the handling of a large number of cases to search for new kinds of radioactivities.

  6. Quest for magicity in hypernuclei

    CERN Document Server

    Ikram, M; Biswal, S K; Patra, S K

    2016-01-01

    In present study, we search the lambda magic number in hypernuclei within the framework of relativistic mean field theory (RMF) with inclusion of hyperon-nucleon and hyperon-hyperon potentials. Based on one- and two-lambda separation energy and two-lambda shell gap, 2, 8, 14, 18, 20, 28, 34, 40, 50, 58, 68, 70 and 82 are suggested to be the $\\Lambda$ magic number within the present approach. The weakening strength of $\\Lambda$ spin-orbit interaction is responsible for emerging the new lambda shell closure other than the model scheme. The predicted $\\Lambda$ magic numbers are in remarkable agreement with earlier predictions and hypernuclear magicity quite resembles with nuclear magicity. %Our results also support the nuclear magicity, Our results are supported by nuclear magicity, where neutron number N = 34 is experimentally observed as a magic which is one of the $\\Lambda$ closed shell in our predictions. In addition, the stability of hypernuclei is also examined by calculating the binding energy per particl...

  7. Deep Magic and Modern Magic

    Directory of Open Access Journals (Sweden)

    Ghivirigă Teodora

    2014-12-01

    Full Text Available The paper discusses C. S. Lewis’ position on, and criticism of, magic vs. wisdom and the type of “fast” magic that the (post-modern world has fallen prey to and ends by returning to the alternative that Lewis-and other writers such as his friend and contemporary J. R. R. Tolkien and more recent ones such as Tery Pratchett-suggest as a more propitious alternative.

  8. Magic star puzzle for educational mathematics

    Science.gov (United States)

    Gan, Yee Siang; Fong, Wan Heng; Sarmin, Nor Haniza

    2013-04-01

    One of the interesting fields in recreational mathematics is the magic number arrangement. There are different kinds of arrays in the arrangement for a group of numbers. In particular, one of the arrays in magic number arrangement is called magic star. In fact, magic star involves combinatorics that contributes to geometrical analysis and number theory. Hence, magic star is suitable to be introduced as educational mathematics to cultivate interest in different area of mathematics. To obtain the solutions of normal magic stars of order six, the possible sets of numbers for every line in a magic star have been considered. Previously, the calculation for obtaining the solutions has been done manually which is time-consuming. Therefore, a programming code to generate all the fundamental solutions for normal magic star of order six without including the properties of rotation and reflection has been done. In this puzzle, a magic star puzzle is created by using Matlab software, which enables a user to verify the entries for the cells of magic star of order six. Moreover, it is also user-friendly as it provides interactive commands on the inputs given by the user, which enables the user to detect the incorrect inputs. In addition, user can also choose to view all the fundamental solutions as generated by the programming code.

  9. Magic Fountain

    Institute of Scientific and Technical Information of China (English)

    AARON; A.VESSUP

    2011-01-01

    We’ve all heard the tales surrounding past legends of people motivated by special quests.King Arthur sought the holy grail,Christopher Columbus sought a magic way to India for riches,and Ponce de Leon searched for the fountain of youth.Fables,

  10. WORD MAGIC

    Institute of Scientific and Technical Information of China (English)

    Zhao; Xinmin

    1999-01-01

    This article presents a word game named"Word Magic",which is effective and efficient inavoiding word forgetting & decaying as well as helping students to improve their abilities in spelling,word building and so on.The procedures and rules of the game are formulated together with the makingof the cards used in it.The advantages of the game are also expounded.

  11. Tuning optical properties of magic number cluster (SiO2)4O2H4 by substitutional bonding with gold atoms.

    Science.gov (United States)

    Cai, Xiulong; Zhang, Peng; Ma, Liuxue; Zhang, Wenxian; Ning, Xijing; Zhao, Li; Zhuang, Jun

    2009-04-30

    By bonding gold atoms to the magic number cluster (SiO(2))(4)O(2)H(4), two groups of Au-adsorbed shell-like clusters Au(n)(SiO(2))(4)O(2)H(4-n) (n = 1-4) and Au(n)(SiO(2))(4)O(2) (n = 5-8) were obtained, and their spectral properties were studied. The ground-state structures of these clusters were optimized by density functional theory, and the results show that in despite of the different numbers and types of the adsorbed Au atoms, the cluster core (SiO(2))(4)O(2) of T(d) point-group symmetry keeps almost unchanged. The absorption spectra were obtained by time-dependent density functional theory. From one group to the other, an extension of absorption wavelength from the UV-visible to the NIR region was observed, and in each group the absorption strengths vary linearly with the number of Au atoms. These features indicate their advantages for exploring novel materials with easily controlled tunable optical properties. Furthermore, due to the weak electronic charge transfer between the Au atoms, the clusters containing Au(2) dimers, especially Au(8)(SiO(2))(4)O(2), absorb strongly NIR light at 900 approximately 1200 nm. Such strong absorption suggests potential applications of these shell-like clusters in tumor cells thermal therapy, like the gold-coated silica nanoshells with larger sizes.

  12. MAGIC highlights

    Science.gov (United States)

    López-Coto, Rubén

    2016-07-01

    The present generation of Imaging Air Cherenkov Telescopes (IACTs) has greatly improved our knowledge on the Very High Energy (VHE) side of our Universe. The MAGIC IACTs operate since 2004 with one telescope and since 2009 as a two telescope stereoscopic system. I will outline a few of our latest and most relevant results: the discovery of pulsed emission from the Crab pulsar at VHE, recently found to extend up to 400 GeV and along the "bridge" of the light curve, the measurement of the Crab nebula spectrum over three decades of energy, the discovery of VHE γ-ray emission from the PWN 3C 58, the very rapid emission of IC 310, in addition to dark matter studies. The results that will be described here and the planned deep observations in the next years will pave the path for the future generation of IACTs.

  13. MAGIC highlights

    Directory of Open Access Journals (Sweden)

    López-Coto Rubén

    2016-01-01

    Full Text Available The present generation of Imaging Air Cherenkov Telescopes (IACTs has greatly improved our knowledge on the Very High Energy (VHE side of our Universe. The MAGIC IACTs operate since 2004 with one telescope and since 2009 as a two telescope stereoscopic system. I will outline a few of our latest and most relevant results: the discovery of pulsed emission from the Crab pulsar at VHE, recently found to extend up to 400 GeV and along the “bridge” of the light curve, the measurement of the Crab nebula spectrum over three decades of energy, the discovery of VHE γ-ray emission from the PWN 3C 58, the very rapid emission of IC 310, in addition to dark matter studies. The results that will be described here and the planned deep observations in the next years will pave the path for the future generation of IACTs.

  14. Evidences for magicity in superdeformed shapes

    Indian Academy of Sciences (India)

    Suresh Kumar

    2014-05-01

    Many empirical evidences that point to the existence of preferred magic nucleon numbers for superdeformed (SD) shapes are presented in this paper. We use a simple premise based on the 4-parameter formula fitted using observed -rays of SD bands. In particular, plots of -ray energy ratios, nuclear softness parameter values and the number of SD bands for given and are used to pinpoint the magicity (, numbers) that are most favoured as the SD magic numbers. This analysis also leads to several new predictions on the occurrence of SD bands specially in neutron-rich nuclei.

  15. Magic Numbers of Silicon Clusters

    OpenAIRE

    Pan, Jun; Ramakrishna, Mushti V.

    1994-01-01

    A structural model for intermediate sized silicon clusters is proposed that is able to generate unique structures without any dangling bonds. This structural model consists of bulk-like core of five atoms surrounded by fullerene-like surface. Reconstruction of the ideal fullerene geometry results in the formation of crown atoms surrounded by $\\pi$-bonded dimer pairs. This model yields unique structures for \\Si{33}, \\Si{39}, and \\Si{45} clusters without any dangling bonds and hence explains wh...

  16. Galileo and the magic numbers

    CERN Document Server

    Rosen, Sidney

    2014-01-01

    Sixteenth century Italy produced a genius who marked the world with his studies and hypotheses about mathematical, physical and astronomical truths. His father, musician Vincenzio Galilei said, "Truth is not found behind a man's reputation. Truth appears only when the answers to questions are searched out by a free mind. This is not the easy path in life but it is the most rewarding." Galileo challenged divine law and the physics of Aristotle, and questioned everything in search of truths. And it was through this quest for truth that he was able to establish a structure for modern science.

  17. Perception, Illusion, and Magic.

    Science.gov (United States)

    Solomon, Paul R.

    1980-01-01

    Describes a psychology course in which magical illusions were used for teaching the principles of sensation and perception. Students read psychological, philosophical, historical, and magical literature on illusion, performed a magical illusion, and analyzed the illusion in terms of the psychological principles involved. (Author/KC)

  18. A Magic Book Out of Magic Language

    Institute of Scientific and Technical Information of China (English)

    宋媛

    2007-01-01

    Harry Potter books are great successes, enjoyed by readers' all over the world. Harry Potter and the Philosopher's Stone is the debut of the sequel books,which is about magic and the magical life a little boy- Harry Potter, a born wizard.People are always curious and eager to discover the secrets of magic, to meet the end of the heroes' fates, but not many of them pay attention to the book's language. Actually, I think it is the skillful use and application of language that make the book outstanding. Therefore, this paper mainly discusses the language features of Harry Potter and Philosopher's Stone from these four aspects: speech sounds, choice of vocabulary, sentence structures and figures of speech, aiming at exploring and revealing the charms of the magic book.

  19. Heavy gas relaxation in a light gas shock wave at small Prandtl number

    Science.gov (United States)

    Fernandez-Feria, R.

    2016-09-01

    The shock wave structure of a binary mixture with very different molecular weights is analyzed using a two-fluid theory in the limit of small Prandtl (Pr) number of the light gas. In particular, the case in which both the density ratio and Λ =Pr/δ Sc are order unity or below is considered, where δ ≪1 is the molecular mass ratio and Sc is the Schmidt number. Approximate analytical solutions are given for weak, and for moderately strong, shock waves. In the former case the solution is continuous, while in the latter case the light gas shock exhibits a discontinuity and the heavy gas relaxes towards the final equilibrium state.

  20. Monte Carlo calculated CT numbers for improved heavy ion treatment planning

    Directory of Open Access Journals (Sweden)

    Qamhiyeh Sima

    2014-03-01

    Full Text Available Better knowledge of CT number values and their uncertainties can be applied to improve heavy ion treatment planning. We developed a novel method to calculate CT numbers for a computed tomography (CT scanner using the Monte Carlo (MC code, BEAMnrc/EGSnrc. To generate the initial beam shape and spectra we conducted full simulations of an X-ray tube, filters and beam shapers for a Siemens Emotion CT. The simulation output files were analyzed to calculate projections of a phantom with inserts. A simple reconstruction algorithm (FBP using a Ram-Lak filter was applied to calculate the pixel values, which represent an attenuation coefficient, normalized in such a way to give zero for water (Hounsfield unit (HU. Measured and Monte Carlo calculated CT numbers were compared. The average deviation between measured and simulated CT numbers was 4 ± 4 HU and the standard deviation σ was 49 ± 4 HU. The simulation also correctly predicted the behaviour of H-materials compared to a Gammex tissue substitutes. We believe the developed approach represents a useful new tool for evaluating the effect of CT scanner and phantom parameters on CT number values.

  1. Experimental measurement of the correlation between CT number and heavy ion range

    Institute of Scientific and Technical Information of China (English)

    HE Peng-Bo; LI Qiang; LIU Xin-Guo; YE Fei; DAI Zhong-Ying

    2012-01-01

    For precision delivery of the Bragg peak of a heavy-ion beam to a target volume in ion beam therapy,it is necessary to know the tissue stopping power.A general approach to solve this problem in ion beam therapy is to convert X-ray CT (computed tomography) numbers into water-equivalent path length (WEPL) coefficients using a CT-WEPL calibration curve for all voxels traversed by the beam.This work aims at establishing a CT-WEPL coefficient calibration curve for the heavy ion therapy project at IMP,so as to compute the range of carbon ion beams in tissues easily according to the patient CT data.Several tissueequivalent materials wcrc applicd to measure their WEPL coefficients using a high-energy carbon ion beam in this work.A CT-WEPL calibration curve was obtained through fitting the measured data,which can be used directly for dose optimization and facilitates the design of patient treatment plans significantly at IMP.

  2. Magic Needles

    Institute of Scientific and Technical Information of China (English)

    YU LINTAO

    2010-01-01

    @@ On November 16, UNESCO officially approved the inclusion of acupuncture and moxibustion, a traditional Chinese medicine therapy, on its Representative List of the Intangible Cultural Heritage of Humanity. The number of Chinese cultura items on the list now totals 28, greater than any other country in the world.

  3. The "Magic" String

    Science.gov (United States)

    Hoover, Todd F.

    2010-01-01

    The "Magic" String is a discrepant event that includes a canister with what appears to be the end of two strings protruding from opposite sides of it. Due to the way the strings are attached inside the canister, it appears as if the strings can magically switch the way they are connected. When one string end is pulled, the observer's expectation…

  4. The Magic of Markets

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    The way markets aggregate information and facilitate decentralized planning is almost magical. But paradoxically, the magic continues only because the process is flawed. Therefore, the market is better characterized as being adaptive rather than efficient; and our research should seek to understand, rather than assume, the adaptive process.

  5. Estimating Copy Number and Allelic Variation at the Immunoglobulin Heavy Chain Locus Using Short Reads.

    Directory of Open Access Journals (Sweden)

    Shishi Luo

    2016-09-01

    Full Text Available The study of genomic regions that contain gene copies and structural variation is a major challenge in modern genomics. Unlike variation involving single nucleotide changes, data on the variation of copy number is difficult to collect and few tools exist for analyzing the variation between individuals. The immunoglobulin heavy variable (IGHV locus, which plays an integral role in the adaptive immune response, is an example of a complex genomic region that varies in gene copy number. Lack of standard methods to genotype this region prevents it from being included in association studies and is holding back the growing field of antibody repertoire analysis. Here we develop a method that takes short reads from high-throughput sequencing and outputs a genetic profile of the IGHV locus with the read coverage depth and a putative nucleotide sequence for each operationally defined gene cluster. Our operationally defined gene clusters aim to address a major challenge in studying the IGHV locus: the high sequence similarity between gene segments in different genomic locations. Tests on simulated data demonstrate that our approach can accurately determine the presence or absence of a gene cluster from reads as short as 70 bp. More detailed resolution on the copy number of gene clusters can be obtained from read coverage depth using longer reads (e.g., ≥ 100 bp. Detail at the nucleotide resolution of single copy genes (genes present in one copy per haplotype can be determined with 250 bp reads. For IGHV genes with more than one copy, accurate nucleotide-resolution reconstruction is currently beyond the means of our approach. When applied to a family of European ancestry, our pipeline outputs genotypes that are consistent with the family pedigree, confirms existing multigene variants and suggests new copy number variants. This study paves the way for analyzing population-level patterns of variation in IGHV gene clusters in larger diverse datasets and for

  6. Numerous but rare: an exploration of magic squares.

    Science.gov (United States)

    Kitajima, Akimasa; Kikuchi, Macoto

    2015-01-01

    How rare are magic squares? So far, the exact number of magic squares of order n is only known for n ≤ 5. For larger squares, we need statistical approaches for estimating the number. For this purpose, we formulated the problem as a combinatorial optimization problem and applied the Multicanonical Monte Carlo method (MMC), which has been developed in the field of computational statistical physics. Among all the possible arrangements of the numbers 1; 2, …, n(2) in an n × n square, the probability of finding a magic square decreases faster than the exponential of n. We estimated the number of magic squares for n ≤ 30. The number of magic squares for n = 30 was estimated to be 6.56(29) × 10(2056) and the corresponding probability is as small as 10(-212). Thus the MMC is effective for counting very rare configurations.

  7. Magic among the Trobrianders

    DEFF Research Database (Denmark)

    Sørensen, Jesper

    2008-01-01

    How are magical rituals conceptually structured and how do these structures relate to both the general conceptual systems of a culture and to the cognition of individual participants? This paper will approach these and related questions through an analysis based on the theory of conceptual mappings......, metaphor and metonymy facilitate the projection of both ritual efficacy and inferential structure into the ritual space. I will propose an open list of mappings in magical rituals consisting of the genetic, linguistic, and sympathetic blends. Subsequently, this cognitive approach will be applied...... to a classic area of research on magic, namely the Trobriand garden magic, as described by anthropologist Bronislaw Malinowski. In the conclusion, results from this analysis will be related to long-standing problems and theoretical positions in the study of magic outlined in the introduction to the paper....

  8. Magical Realities in Interaction Design

    DEFF Research Database (Denmark)

    Rasmussen, Majken

    2013-01-01

    The field of interaction design is littered with examples of artefacts, which seemingly do not adhere to well-known physical causalities and our innate expectations of how artefacts should behave in the world, thereby creating the impression of a magic reality; where things can float in mid......-air, the usually inanimate TV can become animate, two separate objects can become physically connected, and we can move objects with our mind. The paper presents Subbotsky's [21] four types of magical causalities: mind-over-matter magic, animation magic, nonpermanence magic and sympathetic magic, as a way...... to reflect upon the magical realities constructed by technological artefacts...

  9. Qutrit Magic State Distillation

    CERN Document Server

    Anwar, Hussain; Browne, Dan E

    2012-01-01

    Magic state distillation (MSD) is a purification protocol that plays a central role in fault tolerant quantum computation. Repeated iteration of the steps of a MSD protocol, generates pure single non-stabilizer states, or magic states, from multiple copies of a mixed resource state using stabilizer operations only. Thus mixed resource states promote the stabilizer operations to full universality. Magic state distillation was introduced for qubit-based quantum computation, but little has been known concerning MSD in higher dimensional qudit-based computation. Here, we describe a general approach for studying MSD in higher dimensions. We use it to investigate the features of a qutrit MSD protocol based on the 5-qutrit stabilizer code. We show that this protocol distills non-stabilizer magic states, and identify two types of states, that are attractors of this iteration map. Finally, we show how these states may be converted, via stabilizer circuits alone, into a state suitable for state injected implementation ...

  10. The Magic of RFID

    Institute of Scientific and Technical Information of China (English)

    Roy; Want

    2008-01-01

    1 Introduction Many modern technologies give the impression that they work by magic, particularly when they operate automatically and their mechanisms are invisible. A technology called RFID (radio frequency identification), which is relatively new to the mass market

  11. The magic nature of 132Sn explored through the single-particle states of 133Sn

    CERN Document Server

    Jones, K L; Bardayan, D W; Blackmon, J C; Chae, K Y; Chipps, K A; Cizewski, J A; Erikson, L; Harlin, C; Hatarik, R; Kapler, R; Kozub, R L; Liang, J F; Livesay, R; Ma, Z; Moazen, B H; Nesaraja, C D; Nunes, F M; Pain, S D; Patterson, N P; Shapira, D; Shriner, J F; Smith, M S; Swan, T P; Thomas, J S; 10.1038/nature09048

    2010-01-01

    Atomic nuclei have a shell structure where nuclei with 'magic numbers' of neutrons and protons are analogous to the noble gases in atomic physics. Only ten nuclei with the standard magic numbers of both neutrons and protons have so far been observed. The nuclear shell model is founded on the precept that neutrons and protons can move as independent particles in orbitals with discrete quantum numbers, subject to a mean field generated by all the other nucleons. Knowledge of the properties of single-particle states outside nuclear shell closures in exotic nuclei is important for a fundamental understanding of nuclear structure and nucleosynthesis (for example the r-process, which is responsible for the production of about half of the heavy elements). However, as a result of their short lifetimes, there is a paucity of knowledge about the nature of single-particle states outside exotic doubly magic nuclei. Here we measure the single-particle character of the levels in 133Sn that lie outside the double shell clos...

  12. Measurement of Black Carbon and Particle Number Emission Factors from Individual Heavy-Duty Trucks

    Energy Technology Data Exchange (ETDEWEB)

    Ban-Weiss, George A.; Lunden, Melissa M.; Kirchstetter, Thomas W.; Harley, Robert A.

    2009-02-02

    Emission factors for black carbon (BC) and particle number (PN) were measured from 226 individual heavy-duty (HD) diesel-fueled trucks driving through a 1 km-long California highway tunnel in August 2006. Emission factors were based on concurrent increases in BC, PN, and CO{sub 2}B concentrations (measured at 1 Hz) that corresponded to the passage of individual HD trucks. The distributions of BC and PN emission factors from individual HD trucks are skewed, meaning that a large fraction of pollution comes from a small fraction of the in-use vehicle fleet. The highest-emitting 10% of trucks were responsible for {approx} 40% of total BC and PN emissions from all HD trucks. BC emissions were log-normally distributed with a mean emission factor of 1.7 g kg {sup -1} and maximum values of {approx} 10 g kg{sup -1}. Corresponding values for PN emission factors were 4.7 x 10{sup 15} and 4 x 10{sup 16} kg{sup -1}. There was minimal overlap among high-emitters of these two pollutants: only 1 of the 226 HD trucks measured was found to be among the highest 10% for both BC and PN. Monte Carlo resampling of the distribution of BC emission factors observed in this study revealed that uncertainties (1{sigma}) in extrapolating from a random sample of n HD trucks to a population mean emission factor ranged from {+-} 43% for n = 10 to {+-} 8% for n = 300, illustrating the importance of sufficiently large vehicle sample sizes in emissions studies. Studies with low sample sizes are also more easily biased due to misrepresentation of high-emitters. As vehicles become cleaner on average in future years, skewness of the emissions distributions will increase, and thus sample sizes needed to extrapolate reliably from a subset of vehicles to the entire in-use vehicle fleet are expected to become more of a challenge.

  13. Measurement of black carbon and particle number emission factors from individual heavy-duty trucks.

    Science.gov (United States)

    Ban-Weiss, George A; Lunden, Melissa M; Kirchstetter, Thomas W; Harley, Robert A

    2009-03-01

    Emission factors for black carbon (BC) and particle number (PN) were measured from 226 individual heavy-duty (HD) diesel trucks driving through a 1-km-long California highway tunnel in August 2006. Emission factors were based on concurrent increases in BC, PN, and CO2 concentrations (measured at 1 Hz) that corresponded to the passage of individual HD trucks. The distributions of BC and PN emission factors from individual HD trucks are skewed, meaning that a large fraction of pollution comes from a small fraction of the in-use vehicle fleet. The highest-emitting 10% of trucks were responsible for approximately 40% of total BC and PN emissions from all HD trucks. BC emissions were log-normally distributed with a mean emission factor of 1.7 g kg(-1) and maximum values of approximately 10 g kg(-1). Corresponding values for PN emission factors were 4.7 x 10(15) and 4 x 10(16) # kg(-1). There was minimal overlap among high-emitters of these two pollutants: only 1 of the 226 HD trucks measured was found to be among the highest 10% for both BC and PN. Monte Carlo resampling of the distribution of BC emission factors observed in this study revealed that uncertainties (1sigma) in extrapolating from a random sample of n HD trucks to a population mean emission factor ranged from +/- 43% for n=10 to +/- 8% for n=300, illustrating the importance of vehicle sample sizes in emissions studies. When n=10, sample means are more likely to be biased due to misrepresentation of high-emitters. As vehicles become cleaner on average in the future, skewness of the emissions distributions will increase, and thus sample sizes needed to extrapolate reliably from a subset of vehicles to the entire in-use vehicle fleet will become more of a challenge.

  14. On Magic Realism in Beloved

    Institute of Scientific and Technical Information of China (English)

    江慧慧

    2014-01-01

    Magical realism is a literary form that intertwines magic elements with a mundane, realistic environment. In this paper, magic realism in Beloved is elaborated from the fol owing perspectives, namely, the mixture of magic and real, the mythological Archetypes, the technique of fragmentation with an example of the fragments of Beloved’s death, the displacement of time, and the frequent transfer of narration perspective.

  15. The Source of Magic

    Directory of Open Access Journals (Sweden)

    Wilcock, Sean

    2015-12-01

    Full Text Available This paper is an attempt to show that a large part of Western society no longer operates on the rationalist principles that most of us thought it did, but that it instead runs by magic more akin to that in fantasy works. The term ‘magic’ is not meant metaphorically or in science fiction author Arthur C Clarke’s sense that ‘Any sufficiently advanced technology is indistinguishable from magic’ (Clarke 1962, but is meant literally in the sense that Frazer (1890, republished 2003 used the term. This means that instead of trying to understand the present and near future by looking at the works of science fiction creators who put forth a rationalist and technological view of the world, we would understand the future better by looking to the fantasy of authors such as Jack Vance, Matthew Hughes, Ursula Le Guin, Piers Anthony and Michael Moorcock. This magic is manifested through magical thinking and irrational behaviour, where the majority of us use literal spells and incantations in our daily interactions with each other in the networked world, and where we worship capricious gods; most importantly, those spells, incantations and worship actually work, and those gods have actually come to exist. This paper will also show just how the spread of the computer technology propounded by scientists, technologists and SF writers has inevitably led to the creation of this irrational and magical world. This is partly because of limitations built-in to the formal systems on which these systems are based, leading to an extreme example of the law of unintended consequences. Finally, the paper will explain the mechanism by which magic is literally becoming real by reference to Frazer’s two laws of magic: the Law of Similarity and the Law of Contagion.

  16. The "magical" language of Mantra.

    Science.gov (United States)

    Burchett, Patton E

    2008-01-01

    This paper aims to illuminate the phenomenon of mantras and to critique the category of magic through an examination of mantra as magical language. Mantras have often been referred to as "magic formulas" or "spells," yet one searches the scholarly literature in vain for a worthy explanation of precisely why mantra should or should not be considered magical. This essay addresses this lack, (a) explaining how mantra's conflict with modern Western understandings of language has led scholars to conceive of mantra as magic and (b) showing just what is at stake in such characterizations. This examination of mantra will demonstrate how "magic" and related terms have consistently been used not so much to describe as to marginalize and de-authorize that to which they refer. While the issue is partly about flawed terms and categories, the question of mantra as magic ultimately leads to an unsettling confrontation with the limits of our own modern rationalist perspective.

  17. Between Magic and Rationality

    DEFF Research Database (Denmark)

    In Between Magic and Rationality, Vibeke Steffen, Steffen Jöhncke, and Kirsten Marie Raahauge bring together a diverse range of ethnographies that examine and explore the forms of reflection, action, and interaction that govern the ways different contemporary societies create and challenge...

  18. Neuroscience, Magic, and Counseling

    Science.gov (United States)

    Echterling, Lennis G.; Presbury, Jack; Cowan, Eric

    2012-01-01

    Recent findings in neuroscience have identified principles, such as attention management and change blindness, which stage magicians exploit to create illusions. Neuroscientists have also revealed how mirror neurons and oxytocin enhance the impact of magic. In other words, magicians are just as much practitioners of sleight of mind as they are of…

  19. Neuroscience, Magic, and Counseling

    Science.gov (United States)

    Echterling, Lennis G.; Presbury, Jack; Cowan, Eric

    2012-01-01

    Recent findings in neuroscience have identified principles, such as attention management and change blindness, which stage magicians exploit to create illusions. Neuroscientists have also revealed how mirror neurons and oxytocin enhance the impact of magic. In other words, magicians are just as much practitioners of sleight of mind as they are of…

  20. Magical Ideation and Schizophrenia.

    Science.gov (United States)

    George, Leonard; Neufeld, Richard W. J.

    1987-01-01

    Administered the Eckblad and Chapman (1983) Magical Ideation Scale to groups of paranoid and nonparanoid schizophrenics and control subjects. Schizophrenics scored significantly higher than nonschizophrenic patients (mainly cases of affective disorder) and normal control subjects. Discusses theoretical and prognostic utility of this finding.…

  1. Observations of different core water cluster ions Y-(H2O)n (Y = O2, HOx, NOx, COx) and magic number in atmospheric pressure negative corona discharge mass spectrometry.

    Science.gov (United States)

    Sekimoto, Kanako; Takayama, Mitsuo

    2011-01-01

    Reliable mass spectrometry data from large water clusters Y(-)(H(2)O)(n) with various negative core ions Y(-) such as O(2)(-), HO(-), HO(2)(-), NO(2)(-), NO(3)(-), NO(3)(-)(HNO(3))(2), CO(3)(-) and HCO(4)(-) have been obtained using atmospheric pressure negative corona discharge mass spectrometry. All the core Y(-) ions observed were ionic species that play a central role in tropospheric ion chemistry. These mass spectra exhibited discontinuities in ion peak intensity at certain size clusters Y(-)(H(2)O)(m) indicating specific thermochemical stability. Thus, Y(-)(H(2)O)(m) may correspond to the magic number or first hydrated shell in the cluster series Y(-)(H(2)O)(n). The high intensity discontinuity at HO(-)(H(2)O)(3) observed was the first mass spectrometric evidence for the specific stability of HO(-)(H(2)O)(3) as the first hydrated shell which Eigen postulated in 1964. The negative ion water clusters Y(-)(H(2)O)(n) observed in the mass spectra are most likely to be formed via core ion formation in the ambient discharge area (760 torr) and the growth of water clusters by adiabatic expansion in the vacuum region of the mass spectrometers (≈1 torr). The detailed mechanism of the formation of the different core water cluster ions Y(-)(H(2)O)(n) is described.

  2. Application of a Resource Theory for Magic States to Fault-Tolerant Quantum Computing.

    Science.gov (United States)

    Howard, Mark; Campbell, Earl

    2017-03-03

    Motivated by their necessity for most fault-tolerant quantum computation schemes, we formulate a resource theory for magic states. First, we show that robustness of magic is a well-behaved magic monotone that operationally quantifies the classical simulation overhead for a Gottesman-Knill-type scheme using ancillary magic states. Our framework subsequently finds immediate application in the task of synthesizing non-Clifford gates using magic states. When magic states are interspersed with Clifford gates, Pauli measurements, and stabilizer ancillas-the most general synthesis scenario-then the class of synthesizable unitaries is hard to characterize. Our techniques can place nontrivial lower bounds on the number of magic states required for implementing a given target unitary. Guided by these results, we have found new and optimal examples of such synthesis.

  3. RMF+BCS Description of Some Traditional Neutron Magic Isotones

    Directory of Open Access Journals (Sweden)

    Saxena G.

    2014-03-01

    Full Text Available The traditional neutron magic nuclei with N = 8, 20, 28, 50, 82 and 126, and those with neutron sub-magic number N = 40 are investigated within the relativistic mean-field plus BCS (RMF+BCS approach. The results indicate appearance of new proton magic numbers as well as the disappearance of conventional magic numbers for nuclei with extreme isospin values. The calculated energies and densities do not indicate any tendency for the proton halo formations in any of the proton rich isotones due to Coulomb interaction and different single particle spectra. However, the potential barrier provided by the Coulomb interaction and that due to the centrifugal force may cause along delay in the actual decay of proton rich nucleus resulting the extended drip line.

  4. Organ transplantation and magical thinking.

    Science.gov (United States)

    Vamos, Marina

    2010-10-01

    Organ transplantation can provide important treatment benefits in a variety of situations. While a number of live donor procedures are now possible, procurement of organs from dead donors remains the mainstay of transplant programmes. However, cadaveric donation rates remain much lower than anticipated, and some patients who receive organs struggle to adapt to their new body. The reasons for this are not entirely explained by rational or logical means. This paper uses concepts drawn from magical thinking to try to explain some of the less apparent issues at play within the process of cadaveric organ transplantation, including both the donation and receiving of organs. Three themes are explored as potentially relevant: superstitions and rituals around death and the dead body, incorporation and the meanings attached to the transplanted organ, and survivor guilt. All three are shown to be relevant for some part of the transplantation process in at least a minority of cases. It is therefore suggested that focusing not only on the logical and scientific, but also on the ambiguous and magical may enhance the organ donation process and thus increase donation rates and the psychological adjustment of transplant recipients.

  5. Direct mass measurements of neutron-rich $^{86}$Kr projectile fragments and the persistence of neutron magic number $N$ = 32 in Sc isotopes

    CERN Document Server

    Xu, Xing; Zhang, Yu-hu; Xu, Hu-shan; Shuai, Peng; Tu, Xiao-lin; Litvinov, Yuri A; Zhou, Xiao-hong; Sun, Bao-hua; Yuan, You-jin; Xia, Jia-wen; Yang, Jian-cheng; Blaum, KLaus; Chen, Rui-jiu; Chen, Xiang-cheng; Fu, Chao-yi; Ge, Zhuang; Hu, Zheng-guo; Huang, Wen-jia; Liu, Da-wei; Lam, Yi-hua; Ma, Xin-wen; Mao, Rui-shi; Uesaka, T; Xiao, Guo-ging; Xing, Yuan-ming; Yamaguchi, T; Yamaguchi, Y; Zeng, Qi; Yan, Xin-liang; Zhao, Hong-wei; Zhao, Tie-cheneg; Zhang, Wei; Zhan, Wen-long

    2016-01-01

    In this paper, we present direct mass measurements of neutron-rich $^{86}$Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass excesses of $^{52-54}$Sc nuclides are determined to be -40492(82), -38928(114), -34654(540) keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 (AME12). In particular, $^{53}$Sc and $^{54}$Sc are more bound by 0.8 MeV and 1.0 MeV, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number $N$ = 32 in Sc isotopes.

  6. Magical mathematics the mathematical ideas that animate great magic tricks

    CERN Document Server

    Diaconis, Persi

    2012-01-01

    Magical Mathematics reveals the secrets of amazing, fun-to-perform card tricks--and the profound mathematical ideas behind them--that will astound even the most accomplished magician. Persi Diaconis and Ron Graham provide easy, step-by-step instructions for each trick, explaining how to set up the effect and offering tips on what to say and do while performing it. Each card trick introduces a new mathematical idea, and varying the tricks in turn takes readers to the very threshold of today's mathematical knowledge. For example, the Gilbreath Principle--a fantastic effect where the cards remain in control despite being shuffled--is found to share an intimate connection with the Mandelbrot set. Other card tricks link to the mathematical secrets of combinatorics, graph theory, number theory, topology, the Riemann hypothesis, and even Fermat's last theorem.

  7. A game magically circling

    DEFF Research Database (Denmark)

    Ejsing-Duun, Stine

    2011-01-01

    This chapter analyses the relationship between players, the game world, and the ordinary world in alternative reality games (ARGs) and location-based games (LBGs). These games use technology to create a game world in the everyday scene. The topic of this chapter is the concept of the 'magic circle......', which defines the relationship between play and the ordinary world, and how this concept relates to a new kind of game....

  8. A game magically circling

    DEFF Research Database (Denmark)

    Ejsing-Duun, Stine

    2011-01-01

    This chapter analyses the relationship between players, the game world, and the ordinary world in alternative reality games (ARGs) and location-based games (LBGs). These games use technology to create a game world in the everyday scene. The topic of this chapter is the concept of the 'magic circle......', which defines the relationship between play and the ordinary world, and how this concept relates to a new kind of game....

  9. Magic Baseline Beta Beam

    CERN Document Server

    Agarwalla, Sanjib Kumar; Raychaudhuri, Amitava

    2007-01-01

    We study the physics reach of an experiment where neutrinos produced in a beta-beam facility at CERN are observed in a large magnetized iron calorimeter (ICAL) at the India-based Neutrino Observatory (INO). The CERN-INO distance is close to the so-called "magic" baseline which helps evade some of the parameter degeneracies and allows for a better measurement of the neutrino mass hierarchy and $\\theta_{13}$.

  10. Reynolds number influence on preferential concentration of heavy particles in turbulent flows

    Energy Technology Data Exchange (ETDEWEB)

    Obligado, Martin; Missaoui, Mahrane; Cartellier, Alain; Bourgoin, Mickaeel [Laboratoire des Ecoulements Geophysiques et Industriels, CNRS/UJF/G-INP UMR5519, BP53, 38041 Grenoble cedex 9 (France); Monchaux, Romain, E-mail: mickael.bourgoin@hmg.inpg.fr [Unite de mecanique, Ecole Nationale Superieure de Techniques Avancees, ParisTech, Chemin de la Huniere, 91761, Palaiseau Cedex (France)

    2011-12-22

    We present a study of the preferential concentration and clustering in homogeneous and isotropic turbulence. Using Voronoie diagrams, we have formerly quantified preferential concentration as a function of the Stokes number in moderate turbulence conditions up to Reynolds number based on Taylor microscale of the order of R{sub {lambda}} {approx} 120. Using an active grid recently implemented in our windtunnel, we investigate in the present study, the effect of Reynolds number on particles clustering, in the range R{sub {lambda}} {approx} 200 - 400.

  11. A conceptual outline of contemporary magic practice

    OpenAIRE

    Charles Rolfe

    2014-01-01

    This paper offers a conceptual outline of contemporary magic practice that is applicable to magic performed, experienced, and commercialized as a form of entertainment. Magic is defined within a paradoxical dialectics of art and (the nonart of) work. Jacques Rancière’s ideas are used to conceive magic as (1) art: where magic is based around dissemblance (operations which alter the given) and theatrical spectacle (drama before an audience); and (2) work: where magic is embodied in the figure o...

  12. On the uniqueness of d-vertex magic constant

    Directory of Open Access Journals (Sweden)

    Arumugam S.

    2014-05-01

    Full Text Available Let G = (V,E be a graph of order n and let D ⊆ {0, 1, 2, 3, . . .}. For v ∈ V, let ND(v = {u ∈ V : d(u, v ∈ D}. The graph G is said to be D-vertex magic if there exists a bijection f : V (G → {1, 2, . . . , n} such that for all v ∈ V, ∑uv∈ND(v f(u is a constant, called D-vertex magic constant. O’Neal and Slater have proved the uniqueness of the D-vertex magic constant by showing that it can be determined by the D-neighborhood fractional domination number of the graph. In this paper we give a simple and elegant proof of this result. Using this result, we investigate the existence of distance magic labelings of complete r-partite graphs where r ≥ 4.

  13. MAGIC-web: a platform for untargeted and targeted N-linked glycoprotein identification.

    Science.gov (United States)

    Lih, T Mamie; Choong, Wai-Kok; Chen, Chen-Chun; Cheng, Cheng-Wei; Lin, Hsin-Nan; Chen, Ching-Tai; Chang, Hui-Yin; Hsu, Wen-Lian; Sung, Ting-Yi

    2016-07-01

    MAGIC-web is the first web server, to the best of our knowledge, that performs both untargeted and targeted analyses of mass spectrometry-based glycoproteomics data for site-specific N-linked glycoprotein identification. The first two modules, MAGIC and MAGIC+, are designed for untargeted and targeted analysis, respectively. MAGIC is implemented with our previously proposed novel Y1-ion pattern matching method, which adequately detects Y1- and Y0-ion without prior information of proteins and glycans, and then generates in silico MS(2) spectra that serve as input to a database search engine (e.g. Mascot) to search against a large-scale protein sequence database. On top of that, the newly implemented MAGIC+ allows users to determine glycopeptide sequences using their own protein sequence file. The third module, Reports Integrator, provides the service of combining protein identification results from Mascot and glycan-related information from MAGIC-web to generate a complete site-specific protein-glycan summary report. The last module, Glycan Search, is designed for the users who are interested in finding possible glycan structures with specific numbers and types of monosaccharides. The results from MAGIC, MAGIC+ and Reports Integrator can be downloaded via provided links whereas the annotated spectra and glycan structures can be visualized in the browser. MAGIC-web is accessible from http://ms.iis.sinica.edu.tw/MAGIC-web/index.html.

  14. A new approach to magic

    Directory of Open Access Journals (Sweden)

    Čvorović Jelena

    2006-01-01

    Full Text Available This paper uses the example of traditional practices of magic to suggest ways to incorporate cultural behaviors within the evolutionary paradigm. The first suggestion is to restrict hypotheses to only identifiable variables. This means avoiding the temptation of following the nonevolutionary social sciences in the practice of basing explanations on unverifiable guesses about what beliefs (or memes in evolutionary jargon may or may not inhabit people's brains. In contrast with previous explanations that magical practices result from beliefs and memes whose primarily purpose is to reduce anxiety, we propose that magic is a form of communication that promotes cooperation and often avoids anti-social behavior. This effect of increased cooperation could explain why traditional forms of magic have probably existed and had significant positive consequences for the participants. To be effective as a means of communication, magical rituals must specify both the content of the message and the receiver of the message. Although the content of the communicative message differs with different types of magic, all magical acts serve a purpose to influence the behavior of the party involved and that is the most significant identifiable effect of such behavior. An advantage of this approach over many previous explanations of magic is that because it focuses on identifiable phenomena, the definitions and explanations used in this approach can be falsified.

  15. Quantum Mechanics, is it magic

    CERN Document Server

    Ferrero, M; Sánchez-Gómez, J L

    2008-01-01

    We show that quantum mechanics is the first theory in human history that violates the basic a priori principles that have shaped human thought since immemorial times. Therefore although it is more contrary to magic than any body of knowledge could be, what could be called its magic precisely resides in this violation.

  16. Garden Gnomes: Magical or Tacky?

    Science.gov (United States)

    Flynt, Deborah

    2012-01-01

    Garden gnomes: magical or tacky? Well, art is in the eye of the beholder, and for the author's advanced seventh-grade art class, garden gnomes are magical. Gnomes have a very long history, dating back to medieval times. A fairytale describes them as brownie-like creatures that are nocturnal helpers. In this article, the author describes how her…

  17. Business, Anthropology, and Magical Systems

    DEFF Research Database (Denmark)

    Moeran, Brian

    2014-01-01

    —encompassing related concepts of alchemy, animism, and enchantmen—is reflected in other business practices, which have developed their own parallel and interlocking systems of magic. Certain forms of capitalism, the—fashion, for example, or finance—may be analysed as a field of magical systems....

  18. The effective atomic number for gamma ray interactions with heavy metal oxide glasses

    DEFF Research Database (Denmark)

    Manohara, S. R.; Hanagodimath, S.M.; Gerward, Leif

    2010-01-01

    The effective atomic number, Z(eff), and the effective electron density, N-el,N-eff, have been calculated at photon energies from 1 keV to 100 GeV for CaO-SrO-B2O3, ZnO-PbO-B2O3, and CdO-PbO-B2O3 glasses with potential applications as gamma ray shielding materials. Appreciable variations are noted...... glasses have gamma ray shielding properties comparable with standard shielding materials, such as concrete....

  19. Laplacian magic windows

    Science.gov (United States)

    Berry, M. V.

    2017-06-01

    A transparent sheet, flat to unaided vision but with a gentle surface relief, can concentrate light onto a screen with intensity reproducing any desired image: the sheet is a ‘magic window’. When the ray deflections are sufficiently small that there are no caustics between the window and the screen, the image intensity is the Laplacian function of the relief height function—a very simple approximation to general freeform optics. Therefore the desired relief is obtained by solving Poisson’s equation. Numerical simulations indicate that the Laplacian image approximation will apply to realistic situations.

  20. Witnessing the elimination of magic wands

    NARCIS (Netherlands)

    Blom, Stefan; Huisman, Marieke

    2013-01-01

    This paper discusses the use and verification of magic wands. Magic wands are used to specify incomplete resources in separation logic, i.e., if missing resources are provided, a magic wand allows one to exchange these for the completed resources. We show how the magic wand operator is suitable to d

  1. Ground State Properties of Neutron Magic Nuclei

    CERN Document Server

    Saxena, G

    2016-01-01

    A systematic study of the ground state properties of the entire chains of even even neutron magic nuclei represented by isotones of traditional neutron magic numbers N = 8, 20, 40, 50, 82 and 126 has been carried out using relativistic mean field (rmf) plus Bardeen Cooper Schrieffer (BCS) approach. Our present investigation includes deformation, binding energy, two proton separation energy, single particle energy, rms radii along with proton and neutron density profiles, etc. Several of these results are compared with the results calculated using non relativistic approach (Skyrme Hartree Fock method) along with available experimental data and indeed they are found with excellent agreement. In addition, the possible locations of the proton and neutron drip lines, the (Z,N) values for the new shell closures, disappearance of traditional shell closures as suggested by the detailed analyzes of results are also discussed in detail.

  2. MAGIC: A Tool for Combining, Interpolating, and Processing Magnetograms

    Science.gov (United States)

    Allred, Joel

    2012-01-01

    Transients in the solar coronal magnetic field are ultimately the source of space weather. Models which seek to track the evolution of the coronal field require magnetogram images to be used as boundary conditions. These magnetograms are obtained by numerous instruments with different cadences and resolutions. A tool is required which allows modelers to fmd all available data and use them to craft accurate and physically consistent boundary conditions for their models. We have developed a software tool, MAGIC (MAGnetogram Interpolation and Composition), to perform exactly this function. MAGIC can manage the acquisition of magneto gram data, cast it into a source-independent format, and then perform the necessary spatial and temporal interpolation to provide magnetic field values as requested onto model-defined grids. MAGIC has the ability to patch magneto grams from different sources together providing a more complete picture of the Sun's field than is possible from single magneto grams. In doing this, care must be taken so as not to introduce nonphysical current densities along the seam between magnetograms. We have designed a method which minimizes these spurious current densities. MAGIC also includes a number of post-processing tools which can provide additional information to models. For example, MAGIC includes an interface to the DA VE4VM tool which derives surface flow velocities from the time evolution of surface magnetic field. MAGIC has been developed as an application of the KAMELEON data formatting toolkit which has been developed by the CCMC.

  3. "Magic" Ionization Mass Spectrometry

    Science.gov (United States)

    Trimpin, Sarah

    2016-01-01

    The systematic study of the temperature and pressure dependence of matrix-assisted ionization (MAI) led us to the discovery of the seemingly impossible, initially explained by some reviewers as either sleight of hand or the misinterpretation by an overzealous young scientist of results reported many years before and having little utility. The "magic" that we were attempting to report was that with matrix assistance, molecules, at least as large as bovine serum albumin (66 kDa), are lifted into the gas phase as multiply charged ions simply by exposure of the matrix:analyte sample to the vacuum of a mass spectrometer. Applied heat, a laser, or voltages are not necessary to achieve charge states and ion abundances only previously observed with electrospray ionization (ESI). The fundamentals of how solid phase volatile or nonvolatile compounds are converted to gas-phase ions without added energy currently involves speculation providing a great opportunity to rethink mechanistic understanding of ionization processes used in mass spectrometry. Improved understanding of the mechanism(s) of these processes and their connection to ESI and matrix-assisted laser desorption/ionization may provide opportunities to further develop new ionization strategies for traditional and yet unforeseen applications of mass spectrometry. This Critical Insights article covers developments leading to the discovery of a seemingly magic ionization process that is simple to use, fast, sensitive, robust, and can be directly applied to surface characterization using portable or high performance mass spectrometers.

  4. Doubly magic properties in superheavy nuclei

    Institute of Scientific and Technical Information of China (English)

    HUANG Ya-Wei; ZHU Jian-Yu

    2009-01-01

    A systematic study of global properties of superheavy nuclei in the framework of the Liquid Drop Model and the Strutinsky shell correction method is performed. The evolution equilibrium deformations, TRS graphs and α-decay energies are calculated using the TRS model. The analysis covers a wide range of even-even superheavy nuclei from Z = 102 to 122. Magic numbers and their observable influence occurring in this region have been investigated. Shell closures appear at proton number Z = 114 and at neutron number N = 184.

  5. The upgraded MAGIC Cherenkov telescopes

    Energy Technology Data Exchange (ETDEWEB)

    Tescaro, D., E-mail: dtescaro@iac.es [Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife (Spain); Universidad de La Laguna (ULL), Dept. Astrofísica, E-38206 La Laguna, Tenerife (Spain)

    2014-12-01

    The MAGIC Cherenkov telescopes underwent a major upgrade in 2011 and 2012. A new 1039-pixel camera and a larger area digital trigger system were installed in MAGIC-I, making it essentially identical to the newer MAGIC-II telescope. The readout systems of both telescopes were also upgraded, with fully programmable receiver boards and DRS4-chip-based digitization systems. The upgrade eased the operation and maintenance of the telescopes and also improved significantly their performance. The system has now an integral sensitivity as good as 0.6% of the Crab Nebula flux (for E>400GeV), with an effective analysis threshold at 70 GeV. This allows MAGIC to secure one of the leading roles among the current major ground-based Imaging Atmospheric Cherenkov telescopes for the next 5–10 years. - Highlights: • In 2011 and 2012 the MAGIC telescopes underwent a two-stage major upgrade. • The new camera of MAGIC-I allows us to exploit a 1.4 larger trigger area. • The novel DRS4-based readout systems allow a cost-effective ultra-fast digitization. • The upgrade greatly improved the maintainability of the system. • MAGIC has now an optimal integral sensitivity of 0.6% of the Crab Nebula flux.

  6. Magijos ritualas Senekos Medėjoje | Magic Ritual in Seneca’s Medea

    Directory of Open Access Journals (Sweden)

    Jovita Dikmonienė

    2013-12-01

    Full Text Available Magic Ritual in Seneca’s Medea Jovita Dikmonienė Summary The present article deals with the magic ritual in Seneca’s Medea. Seneca, following Ovid’s Metamorphoses, created in the tragedy a witchcraft scene which describes magic numbers, herbs, and rituals dedicated to Hecate. Unlike Ovid, Seneca focuses on rituals involving snakes, conjuring up the dead, and supernatural performative utterances, and emphasises the feeling of anger, which inspired Medea to practise infernal magic. In magic, Romans gave particular importance to the number “three” and the numbers that can be divided by three. Seneca also mentions these numbers. During the performance of the ritual by Medea, Hecate barks three times, a dragon with a trident tongue appears, and tripods play during the ritual. Medea sends to Creusa not two, as in Euripides’ tragedy, but three poisoned gifts: a robe, a necklace, and a crown. Seneca’s Medea makes a wreath to Hecate from nine snakes. Magical, hallucinogenic herbs play an important role in magic. Seneca, like Ovid in his Metamorphoses, describes Medea’s ritual whereby she prepares a magical blend of herbs to poison Creusa. Prometheus’ grass used by Medea is probably mandrake. However, Seneca, like Ovid, does not provide the exact names of the herbs used in magic. Some researchers argue that Seneca described the magic ritual in order to highlight Medea’s desire to control the environment. According to the author of the present article, this claim is only partially true. Magic was necessary for Medea not only to control the environment, but also to control herself. The magic ritual helped her to prepare herself for revenge by transforming her consciousness. With the help of magic her sorrow and pity were transformed into aggression, she overcame her fear and prepared herself to kill her children. Medea’s ritual can be described as the magic of the fight, because it allowed her to transform her consciousness into the

  7. Revealing ontological commitments by magic.

    Science.gov (United States)

    Griffiths, Thomas L

    2015-03-01

    Considering the appeal of different magical transformations exposes some systematic asymmetries. For example, it is more interesting to transform a vase into a rose than a rose into a vase. An experiment in which people judged how interesting they found different magic tricks showed that these asymmetries reflect the direction a transformation moves in an ontological hierarchy: transformations in the direction of animacy and intelligence are favored over the opposite. A second and third experiment demonstrated that judgments of the plausibility of machines that perform the same transformations do not show the same asymmetries, but judgments of the interestingness of such machines do. A formal argument relates this sense of interestingness to evidence for an alternative to our current physical theory, with magic tricks being a particularly pure source of such evidence. These results suggest that people's intuitions about magic tricks can reveal the ontological commitments that underlie human cognition. Copyright © 2014 Elsevier B.V. All rights reserved.

  8. Abject Magic: Reasoning Madness in Justine Larbalestier's "Magic or Madness" Trilogy

    Science.gov (United States)

    Potter, Troy

    2013-01-01

    This paper explores the representation of magic and madness in Justine Larbalestier's "Magic or Madness" trilogy (2005-2007). Throughout the series, magic is constructed as an abject and disabling force that threatens to disable magic-wielders, either through madness or death. Despite being represented as a ubiquitous force, the…

  9. Squaring the Magic

    CERN Document Server

    Cacciatori, Sergio L; Marrani, Alessio

    2012-01-01

    We construct and classify all possible Magic Squares (MS's) related to Euclidean or Lorentzian rank-3 simple Jordan algebras, both on normed division algebras and split composition algebras. Besides the known Freudenthal-Rozenfeld-Tits MS, the single-split G\\"unaydin-Sierra-Townsend MS, and the double-split Barton-Sudbery MS, we obtain other 7 Euclidean and 10 Lorentzian novel MS's. We elucidate the role and the meaning of the various non-compact real forms of Lie algebras, entering the MS's as symmetries of theories of Einstein-Maxwell gravity coupled to non-linear sigma models of scalar fields, possibly endowed with local supersymmetry, in D = 3, 4 and 5 space-time dimensions. In particular, such symmetries can be recognized as the U-dualities or the stabilizers of scalar manifolds within space-time with standard Lorentzian signature or with other, more exotic signatures, also relevant to suitable compactifications of the so-called M*- and M'- theories. Symmetries pertaining to some attractor U-orbits of ma...

  10. Finding All Solutions to the Magic Hexagram

    Science.gov (United States)

    Holland, Jason; Karabegov, Alexander

    2008-01-01

    In this article, a systematic approach is given for solving a magic star puzzle that usually is accomplished by trial and error or "brute force." A connection is made to the symmetries of a cube, thus the name Magic Hexahedron.

  11. A magic pyramid of supergravities

    Energy Technology Data Exchange (ETDEWEB)

    Anastasiou, A.; Borsten, L.; Duff, M.J.; Hughes, L.J.; Nagy, S. [Theoretical Physics, Blackett Laboratory, Imperial College London,London SW7 2AZ (United Kingdom)

    2014-04-29

    By formulating N=1,2,4,8, D=3, Yang-Mills with a single Lagrangian and single set of transformation rules, but with fields valued respectively in ℝ,ℂ,ℍ,O, it was recently shown that tensoring left and right multiplets yields a Freudenthal-Rosenfeld-Tits magic square of D=3 supergravities. This was subsequently tied in with the more familiar ℝ,ℂ,ℍ,O description of spacetime to give a unified division-algebraic description of extended super Yang-Mills in D=3,4,6,10. Here, these constructions are brought together resulting in a magic pyramid of supergravities. The base of the pyramid in D=3 is the known 4×4 magic square, while the higher levels are comprised of a 3×3 square in D=4, a 2×2 square in D=6 and Type II supergravity at the apex in D=10. The corresponding U-duality groups are given by a new algebraic structure, the magic pyramid formula, which may be regarded as being defined over three division algebras, one for spacetime and each of the left/right Yang-Mills multiplets. We also construct a conformal magic pyramid by tensoring conformal supermultiplets in D=3,4,6. The missing entry in D=10 is suggestive of an exotic theory with G/H duality structure F{sub 4(4)}/Sp(3)×Sp(1)

  12. A magic pyramid of supergravities

    Science.gov (United States)

    Anastasiou, A.; Borsten, L.; Duff, M. J.; Hughes, L. J.; Nagy, S.

    2014-04-01

    By formulating = 1, 2, 4, 8, D = 3, Yang-Mills with a single Lagrangian and single set of transformation rules, but with fields valued respectively in , it was recently shown that tensoring left and right multiplets yields a Freudenthal-Rosenfeld-Tits magic square of D = 3 supergravities. This was subsequently tied in with the more familiar description of spacetime to give a unified division-algebraic description of extended super Yang-Mills in D = 3, 4, 6, 10. Here, these constructions are brought together resulting in a magic pyramid of supergravities. The base of the pyramid in D = 3 is the known 4 × 4 magic square, while the higher levels are comprised of a 3 × 3 square in D = 4, a 2 × 2 square in D = 6 and Type II supergravity at the apex in D = 10. The corresponding U-duality groups are given by a new algebraic structure, the magic pyramid formula, which may be regarded as being defined over three division algebras, one for spacetime and each of the left/right Yang-Mills multiplets. We also construct a conformal magic pyramid by tensoring conformal supermultiplets in D = 3, 4, 6. The missing entry in D = 10 is suggestive of anexotic theory with G/ H duality structure F 4(4)/Sp(3) × Sp(1).

  13. Neutrino oscillations: what is magic about the "magic" baseline?

    CERN Document Server

    Smirnov, A Yu

    2006-01-01

    Physics interpretation of the ``magic'' baseline that can play important role in future oscillation experiments is given. The ``magic'' baseline coincides with the refraction length, $l_0$. The latter, in turn, approximately equals the oscillation length in matter at high energies. Therefore at the baseline $L = l_0$ the oscillation phase is $2\\pi$, and consequently, the ``solar'' amplitude of oscillations driven by the mixing angle $\\theta_{12}$ and mass splitting $\\Delta m^2_{21}$ vanishes. As a result, in the lowest order (i) the interference of amplitudes in the $\

  14. Witnessing the elimination of magic wands

    NARCIS (Netherlands)

    Blom, Stefan; Huisman, Marieke

    2015-01-01

    This paper discusses static verification of programs that have been specified using separation logic with magic wands. Magic wands are used to specify incomplete resources in separation logic, i.e., if missing resources are provided, a magic wand allows one to exchange these for the completed resour

  15. Witnessing the elimination of magic wands

    NARCIS (Netherlands)

    Blom, Stefan; Huisman, Marieke

    This paper discusses static verification of programs that have been specified using separation logic with magic wands. Magic wands are used to specify incomplete resources in separation logic, i.e., if missing resources are provided, a magic wand allows one to exchange these for the completed

  16. Upgrade of the MAGIC telescopes

    CERN Document Server

    Mazin, Daniel; Garczarczyk, Markus; Giavitto, Gianluca; Sitarek, Julian

    2014-01-01

    The MAGIC telescopes are two Imaging Atmospheric Cherenkov Telescopes (IACTs) located on the Canary island of La Palma. With 17m diameter mirror dishes and ultra-fast electronics, they provide an energy threshold as low as 50 GeV for observations at low zenith angles. The first MAGIC telescope was taken in operation in 2004 whereas the second one joined in 2009. In 2011 we started a major upgrade program to improve and to unify the stereoscopic system of the two similar but at that time different telescopes. Here we report on the upgrade of the readout electronics and digital trigger of the two telescopes, the upgrade of the camera of the MAGIC I telescope as well as the commissioning of the system after this major upgrade.

  17. The magic road to precision

    CERN Document Server

    Safronova, M S; Safronova, U I; Clark, Charles W

    2015-01-01

    We predict a sequence of magic-zero wavelengths for the Sr excited $5s5p~ ^3P_0$ state, and provide a general roadmap for extracting transition matrix elements using precise frequency measurements. We demonstrate that such measurements can serve as a best global benchmark of the spectroscopic accuracy that is required for the development of high-precision predictive methods. These magic-zero wavelengths are also needed for state-selective atom manipulation for implementation of quantum logic operations. We also identify five magic wavelengths of the $5s^2\\ ^1S_0 - 5s5p\\ ^3P_0$ Sr clock transition between 350 nm and 500 nm which can also serve as precision benchmarks.

  18. Magical Formulae for Market Futures

    DEFF Research Database (Denmark)

    Garsten, Christina; Sörbom, Adrienne

    2016-01-01

    Markets are often portrayed as being organized by way of rationalized knowledge, objective reasoning, and the fluctuations of demand and supply. In parallel, and often mixed with this modality of knowledge, magical beliefs and practices are prevalent. Business leaders, management consultants......, and financial advisors are often savvy in the art of creatively blending the ‘objective facts’ of markets with magical formulae, rites, and imaginaries of the future. This article looks at the World Economic Forum's yearly Davos meeting as a large-scale ritual that engages senior executives of global...

  19. Beyond Technology, there Stands Magic

    Directory of Open Access Journals (Sweden)

    Lúcia Fernandes Lobato

    2013-07-01

    Full Text Available This article shows evidence that despite the prominent influences of the technological revolution and the spectacular panoramas on the contemporary world, magic seems to stand beyond technology. To support this hypothesis, the author investigates the images on the cinema, pointing out that to discover magic in a film, for instance, it is necessary to recognize its subjective structures disguised in the objectivity of the screen. Finally, the author indicates that in the field of image production, dance films that are created out of a cross-disciplinary effort are another by product of the fusion between art and video, born out of technological advancements.

  20. Magical attachment: Children in magical relations with hospital clowns

    Science.gov (United States)

    2012-01-01

    The aim of the present study was to achieve a theoretical understanding of several different-age children's experiences of magic relations with hospital clowns in the context of medical care, and to do so using psychological theory and a child perspective. The method used was qualitative and focused on nine children. The results showed that age was important to consider in better understanding how the children experienced the relation with the hospital clowns, how they described the magical aspects of the encounter and how they viewed the importance of clown encounters to their own well-being. The present theoretical interpretation characterized the encounter with hospital clowns as a magical safe area, an intermediate area between fantasy and reality. The discussion presented a line of reasoning concerning a magical attachment between the child and the hospital clowns, stating that this attachment: a) comprised a temporary relation; b) gave anonymity; c) entailed reversed roles; and d) created an emotional experience of boundary-transcending opportunities. PMID:22371813

  1. Magical attachment: Children in magical relations with hospital clowns

    Directory of Open Access Journals (Sweden)

    Lotta Linge

    2012-02-01

    Full Text Available The aim of the present study was to achieve a theoretical understanding of several different-age children's experiences of magic relations with hospital clowns in the context of medical care, and to do so using psychological theory and a child perspective. The method used was qualitative and focused on nine children. The results showed that age was important to consider in better understanding how the children experienced the relation with the hospital clowns, how they described the magical aspects of the encounter and how they viewed the importance of clown encounters to their own well-being. The present theoretical interpretation characterized the encounter with hospital clowns as a magical safe area, an intermediate area between fantasy and reality. The discussion presented a line of reasoning concerning a magical attachment between the child and the hospital clowns, stating that this attachment: a comprised a temporary relation; b gave anonymity; c entailed reversed roles; and d created an emotional experience of boundary-transcending opportunities.

  2. Magic traits in speciation : 'magic' but not rare?

    NARCIS (Netherlands)

    Servedio, Maria R.; Van Doorn, G. Sander; Kopp, Michael; Frame, Alicia M.; Nosil, Patrik

    2011-01-01

    Speciation with gene flow is greatly facilitated when traits subject to divergent selection also contribute to non-random mating. Such traits have been called 'magic traits', which could be interpreted to imply that they are rare, special, or unrealistic. Here, we question this assumption by illustr

  3. Radiological properties of MAGIC normoxic polymer gel dosimetry

    Science.gov (United States)

    Aljamal, M.; Zakaria, A.; Shamsuddin, S.

    2013-04-01

    For a polymer gel dosimeter to be of use in radiation dosimetry, it should display water-equivalent radiological properties. In this study, the radiological properties of the MAGIC (Methacrylic and Ascorbic acid in Gelatin Initiated by Copper) normoxic polymer gels were investigated. The mass density (ρ) was determined based on Archimedes' principle. The weight fraction of elemental composition and the effective atomic number (Zeff) were calculated. The electron density was also measured with 90° scattering angle at room temperature. The linear attenuation coefficient (μ) of unirradiated gel, irradiated gel, and water were determined using Am-241 based on narrow beam geometry. Monte Carlo simulation was used to calculate the depth doses response of MAGIC gel and water for 6MV photon beam. The weight fractions of elements composition of MAGIC gel were close to that for water. The mass density was found to be 1027 ± 2 kg m-3, which is also very close to mass density of muscle tissue (1030 kg m-3) and 2.7% higher than that of water. The electron density (ρe) and atomic number (Zeff) were found to be 3.43 × 1029 e m-3 and 7.105, respectively. The electron density measured was 2.6% greater than that for water. The atomic number was very close to that for water. The prepared MAGIC gel was found to be water equivalent based on the study of element composition, mass density, electron density and atomic number. The linear attenuation coefficient of unirradiated gel was very close to that of water. The μ of irradiated gel was found to be linear with dose 2-40 Gy. The depth dose response for MAGIC gel from a 6 MV photon beam had a percentage dose difference to water of less than 1%. Therefore it satisfies the criteria to be a good polymer gel dosimeter for radiotherapy.

  4. Magic Pointing for Eyewear Computers

    DEFF Research Database (Denmark)

    Jalaliniya, Shahram; Mardanbegi, Diako; Pederson, Thomas

    2015-01-01

    In this paper, we propose a combination of head and eye movements for touchlessly controlling the "mouse pointer" on eyewear devices, exploiting the speed of eye pointing and accuracy of head pointing. The method is a wearable computer-targeted variation of the original MAGIC pointing approach...

  5. Magic Pointing for Eyewear Computers

    DEFF Research Database (Denmark)

    Jalaliniya, Shahram; Mardanbegi, Diako; Pederson, Thomas

    2015-01-01

    In this paper, we propose a combination of head and eye movements for touchlessly controlling the "mouse pointer" on eyewear devices, exploiting the speed of eye pointing and accuracy of head pointing. The method is a wearable computer-targeted variation of the original MAGIC pointing approach...

  6. A magic pyramid of supergravities

    CERN Document Server

    Anastasiou, A; Duff, M J; Hughes, L J; Nagy, S

    2013-01-01

    By formulating N = 1, 2, 4, 8, D = 3, Yang-Mills with a single Lagrangian and single set of transformation rules, but with fields valued respectively in R,C,H,O, it was recently shown that tensoring left and right multiplets yields a Freudenthal-Rosenfeld-Tits magic square of D = 3 supergravities. This was subsequently tied in with the more familiar R,C,H,O description of spacetime to give a unified division-algebraic description of extended super Yang-Mills in D = 3, 4, 6, 10. Here, these constructions are brought together resulting in a magic pyramid of supergravities. The base of the pyramid in D = 3 is the known 4x4 magic square, while the higher levels are comprised of a 3x3 square in D = 4, a 2x2 square in D = 6 and Type II supergravity at the apex in D = 10. The corresponding U-duality groups are given by a new algebraic structure, the magic pyramid formula, which may be regarded as being defined over three division algebras, one for spacetime and each of the left/right Yang-Mills multiplets. We also c...

  7. Magic and the aesthetic illusion.

    Science.gov (United States)

    Balter, Leon

    2002-01-01

    The aesthetic illusion is the subjective experience that the content of a work of art is reality. It has an intrinsic relation to magic, an intrapsychic maneuver oriented toward modification and control of the extraspyschic world, principally through ego functioning. Magic is ontogenetically and culturally archaic, expresses the omnipotence inherent in primary narcissism, and operates according to the logic of the primary process. Magic is a constituent of all ego functioning, usually latent in later development. It may persist as an archaic feature or may be evoked regressively in global or circumscribed ways. It causes a general disinhibition of instincts and impulses attended by a sense of confidence, exhiliration, and exuberance. The aesthetic illusion is a combination of illusions: (1) that the daydream embodied by the work of art is the beholder's own, the artist being ignored, and (2) that the artistically described protagonist is a real person with a real "world." The first illusion arises through the beholder's emotional-instinctual gratification from his or her own fantasy-memory constellations; the second comes about because the beholder, by taking the protagonist as proxy, mobilizes the subjective experience of the imaginary protagonist's "reality." The first illusion is necessary for the second to take place; the second establishes the aesthetic illusion proper. Both illusions are instances of magic. Accordingly, the aesthetic illusion is accompanied by a heady experience of excitement and euphoria. The relation among the aesthetic illusion, magic, and enthusiasm is illustrated by an analytic case, J. D. Salinger's "The Laughing Man," Woody Allen's Play It Again, Sam, Don Quixote, and the medieval Cult of the Saints.

  8. The Magic of Magic: The Effect of Magic Tricks on Subsequent Engagement with Lecture Material

    Science.gov (United States)

    Moss, Simon A.; Irons, Melanie; Boland, Martin

    2017-01-01

    Background and aims: Lecturers often present entertaining videos, or organize a variety of amusing demonstrations, to foster student engagement or to encourage critical analysis. Magic tricks, in particular, have been shown to activate neural circuits that underpin motivation or problem-solving and, therefore, could be beneficial during lectures.…

  9. Sexual selection and magic traits in speciation with gene flow

    Institute of Scientific and Technical Information of China (English)

    Maria R.SERVEDIO; Michael KOPP

    2012-01-01

    The extent to which sexual selection is involved in speciation with gene flow remains an open question and the subject of much research.Here,we propose that some insight can be gained from considering the concept of magic traits (i.e.,traits involved in both reproductive isolation and ecological divergence).Both magic traits and other,“non-magic”,traits can contribute to speciation via a number of specific mechanisms.We argue that many of these mechanisms are likely to differ widely in the extent to which they involve sexual selection.Furthermore,in some cases where sexual selection is present,it may be prone to inhibit rather than drive speciation.Finally,there are a priori reasons to believe that certain categories of traits are much more effective than others in driving speciation.The combination of these points suggests a classification of traits that may shed light on the broader role of sexual selection in speciation with gene flow.In particular,we suggest that sexual selection can act as a driver of speciation in some scenarios,but may play a negligible role in potentially common categories of magic traits,and may be likely to inhibit speeiation in common categories of non-magic traits.

  10. An efficient magic state approach to small angle rotations

    Science.gov (United States)

    Campbell, Earl T.; O'Gorman, Joe

    2016-12-01

    Standard error-correction techniques only provide a quantum memory and need extra gadgets to perform computation. Central to quantum algorithms are small angle rotations, which can be fault-tolerantly implemented given a supply of an unconventional species of magic state. We present a low-cost distillation routine for preparing these small angle magic states. Our protocol builds on the work of Duclos-Cianci and Poulin (2015 Phys. Rev. A 91 042315) by compressing their circuit. Additionally, we present a method of diluting magic states that reduces costs associated with very small angle rotations. We quantify performance by the expected number of noisy magic states consumed per rotation, and compare with other protocols. For modest-sized angles, our protocols offer a factor 24 improvement over the best-known gate synthesis protocols and a factor 2 over the Duclos-Cianci and Poulin protocol. For very small angle rotations, the dilution protocol dramatically reduces costs, giving several orders magnitude improvement over competitors. There also exists an intermediary regime of small, but not very small, angles where our approach gives a marginal improvement over gate synthesis. We discuss how different performance metrics may alter these conclusions.

  11. Leigh Wilson, Modernism and Magic. Experiments with Spiritualism, Theosophy and the Occult

    OpenAIRE

    Marie, Florence

    2015-01-01

    In her 167-page book entitled Modernism and Magic. Experiments with Spiritualism, Theosophy and the Occult, Leigh Wilson tries to understand in what respect a certain number of modernist writers’ and avant-garde artists’ interest in theosophy, spiritualism and occult practices influenced their creations. She argues that in many cases their interest enabled them to define a new approach to mimesis without rejecting the latter altogether. She contends that magic was at the heart of the occult d...

  12. Towards a science of magic.

    Science.gov (United States)

    Kuhn, Gustav; Amlani, Alym A; Rensink, Ronald A

    2008-09-01

    It is argued here that cognitive science currently neglects an important source of insight into the human mind: the effects created by magicians. Over the centuries, magicians have learned how to perform acts that are perceived as defying the laws of nature, and that induce a strong sense of wonder. This article argues that the time has come to examine the scientific bases behind such phenomena, and to create a science of magic linked to relevant areas of cognitive science. Concrete examples are taken from three areas of magic: the ability to control attention, to distort perception, and to influence choice. It is shown how such knowledge can help develop new tools and indicate new avenues of research into human perception and cognition.

  13. Heavy-section steel technology program: Semiannual progress report for April--September 1996. Volume 13, Number 2

    Energy Technology Data Exchange (ETDEWEB)

    Pennell, W.E. [Oak Ridge National Lab., TN (United States)

    1998-03-01

    The Heavy-Section Steel Technology (HSST) Program is conducted for the US Nuclear Regulatory Commission (NRC) by the Oak Ridge National Laboratory (ORNL). The program focus is on the development and validation of technology for the assessment of fracture-prevention margins in commercial nuclear reactor pressure vessels. The HSST Program is organized in seven tasks: (1) program management, (2) constraint effects analytical development and validation, (3) evaluation of cladding effects, (4) ductile to cleavage fracture mode conversion, (5) fracture analysis methods development and applications, (6) material property data and test methods, and (7) integration of results into a state-of-the-art methodology. The program tasks have been structured to place emphasis on the resolution fracture issues with near-term licensing significance. Resources to execute the research tasks are drawn from ORNL with subcontract support from universities and other research laboratories. Close contact is maintained with the sister Heavy-Section Steel irradiation Program at ORNL and with related research programs both in the US and abroad. This report provides an overview of principal developments in each of the seven program tasks from April 1996--September 1996.

  14. Magical Realism and the Space Between Spaces

    OpenAIRE

    Bundy, Dallin J.

    2012-01-01

    Magical realism comes from Franz Roh, a german art historian and critic, who first used the term to describe the Post-Expressionism movement in visual art. His seminal writings and definitions on Post-Expressionism, then known as magical realism, were translated into Spanish and made available to Latin America in the mid twentieth century. Authors like Jorge Luis Borges and Gabriel Garcia Marquez adopted Roh's writings and re-appropriated magical realism into literary art, and from there the ...

  15. Witnessing the elimination of magic wands.

    Science.gov (United States)

    Blom, Stefan; Huisman, Marieke

    This paper discusses static verification of programs that have been specified using separation logic with magic wands. Magic wands are used to specify incomplete resources in separation logic, i.e., if missing resources are provided, a magic wand allows one to exchange these for the completed resources. One of the applications of the magic wand operator is to describe loop invariants for algorithms that traverse a data structure, such as the imperative version of the tree delete problem (Challenge 3 from the VerifyThis@FM2012 Program Verification Competition), which is the motivating example for our work. Most separation logic-based static verification tools do not provide support for magic wands, possibly because validity of formulas containing the magic wand is, by itself, undecidable. To avoid this problem, in our approach the program annotator has to provide a witness for the magic wand, thus circumventing undecidability due to the use of magic wands. A witness is an object that encodes both instructions for the permission exchange that is specified by the magic wand and the extra resources needed during that exchange. We show how this witness information is used to encode a specification with magic wands as a specification without magic wands. Concretely, this approach is used in the VerCors tool set: annotated Java programs are encoded as Chalice programs. Chalice then further translates the program to BoogiePL, where appropriate proof obligations are generated. Besides our encoding of magic wands, we also discuss the encoding of other aspects of annotated Java programs into Chalice, and in particular, the encoding of abstract predicates with permission parameters. We illustrate our approach on the tree delete algorithm, and on the verification of an iterator of a linked list.

  16. Magic Wavelengths for Terahertz Clock Transitions

    OpenAIRE

    Zhou, Xiaoji; Xu, Xia; Chen, Xuzong; Chen, Jingbiao

    2010-01-01

    Magic wavelengths for laser trapping of boson isotopes of alkaline-earth Sr, Ca and Mg atoms are investigated while considering terahertz clock transitions between the $^{3}P_{0}, ^{3}P_{1}, ^{3}P_{2}$ metastable triplet states. Our calculation shows that magic wavelengths of trapping laser do exist. This result is important because those metastable states have already been used to realize accurate clocks in the terahertz frequency domain. Detailed discussions for magic wavelength for teraher...

  17. Indirect Dark Matter Searches with MAGIC Telescopes

    OpenAIRE

    Satalecka, Konstancja; MAGIC Collaboration

    2015-01-01

    In the last few years the indirect dark matter (DM) searches became a hot topic, with several experimental results showing hints of DM signal. The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes are two $17$\\,m diameter Cherenkov telescopes, located on the Canary island La Palma (Spain). MAGIC carries out a broad DM search program, including observations of dwarf galaxies, galaxy clusters and other DM dominated objects. In these proceedings recent MAGIC results from this field ar...

  18. The Other Side of Magic.

    Science.gov (United States)

    Ekroll, Vebjørn; Sayim, Bilge; Wagemans, Johan

    2017-01-01

    When magicians perform spectacles that seem to defy the laws of nature, they do so by manipulating psychological reality. Hence, the principles underlying the art of conjuring are potentially of interest to psychological science. Here, we argue that perceptual and cognitive principles governing how humans experience hidden things and reason about them play a central role in many magic tricks. Different from tricks based on many other forms of misdirection, which require considerable skill on the part of the magician, many elements of these tricks are essentially self-working because they rely on automatic perceptual and cognitive processes. Since these processes are not directly observable, even experienced magicians may be oblivious to their central role in creating strong magical experiences and tricks that are almost impossible to debunk, even after repeated presentations. We delineate how insights from perceptual psychology provide a framework for understanding why these tricks work so well. Conversely, we argue that studying magic tricks that work much better than one intuitively would believe provides a promising heuristic for charting unexplored aspects of perception and cognition.

  19. Professional Expertise in Magic – Reflecting on professional expertise in magic:An interview study

    Directory of Open Access Journals (Sweden)

    Olli eRissanen

    2014-12-01

    Full Text Available The purpose of the present investigation was to analyse interviews of highly regarded Finnish magicians. Social network analysis (N=120 was used to identify Finland’s most highly regarded magicians (N=16. The selected participants’ careers in professional magic and various aspects of their professional conduct were examined by relying on semi-structured interviews. The results revealed that cultivation of professional level competence in magic usually requires an extensive period of time compared with other domains of expertise. Magic is a unique performing art and it differs from other professions focusing on deceiving the audience. A distinctive feature of magical expertise is that the process takes place entirely through informal training supported by communities of magical practitioners. Three interrelated aspects of magical activity were distinguished: magic tricks, performance, and audience. Although magic tricks constitute a central aspect of magic activity, the participants did not talk about their tricks extensively; this is in accordance with the secretive nature of magic culture.The interviews revealed that a core aspect of the magicians’ activity is performance in front of an audience that repeatedly validates competence cultivated through years of practice. The interviewees reported investing a great deal of effort in planning, orchestrating, and reflecting on their performances. Close interaction with the audience plays an important role in most interviewees’ activity. Many participants put a great deal of effort in developing novel magic tricks. It is common to borrow magic effects from fellow magicians and develop novel methods of implementation. Because magic tricks or programs are not copyrighted, many interviewees considered stealing an unacceptable and unethical aspect of magical activity. The interviewees highlighted the importance of personality and charisma in the successful pursuit of magic activity.

  20. Heavy-Section Steel Irradiation Program: Progress report for April--September 1995. Volume 6, Number 2

    Energy Technology Data Exchange (ETDEWEB)

    Corwin, W.R. [Oak Ridge National Lab., TN (United States)

    1996-08-01

    The goal of the Heavy-Section Steel Irradiation Program is to provide a thorough, quantitative assessment of effects of neutron irradiation on material behavior, and in particular the fracture toughness properties, of typical pressure vessel steels as they relate to light-water reactor pressure-vessel integrity. Effects of specimen size, material chemistry, product form and microstructure, irradiation fluence, flux, temperature and spectrum, and post-irradiation annealing are being examined on a wide range of fracture properties. The HSSI Program is arranged into 14 tasks: (1) program management, (2) fracture toughness (K{sub Ic}) curve shift in high-copper welds, (3) crack-arrest toughness (K{sub Ia}) curve shift in high-copper welds, (4) irradiation effects on cladding, (5) K{sub Ic} and K{sub Ia} curve shifts in low upper-shelf welds, (6) annealing effects in low upper-shelf welds, (7) irradiation effects in a commercial low upper-shelf weld, (8) microstructural analysis of irradiation effects, (9) in-service aged material evaluations, (10) correlation monitor materials, (11) special technical assistance, (12) JPDR steel examination, (13) technical assistance for JCCCNRS Working Groups 3 and 12, and (14) additional requirements for materials. This report provides an overview of the activities within each of these task from April through September 1995.

  1. Genetic properties of the MAGIC maize population: a new platform for high definition QTL mapping in Zea mays.

    Science.gov (United States)

    Dell'Acqua, Matteo; Gatti, Daniel M; Pea, Giorgio; Cattonaro, Federica; Coppens, Frederik; Magris, Gabriele; Hlaing, Aye L; Aung, Htay H; Nelissen, Hilde; Baute, Joke; Frascaroli, Elisabetta; Churchill, Gary A; Inzé, Dirk; Morgante, Michele; Pè, Mario Enrico

    2015-09-11

    Maize (Zea mays) is a globally produced crop with broad genetic and phenotypic variation. New tools that improve our understanding of the genetic basis of quantitative traits are needed to guide predictive crop breeding. We have produced the first balanced multi-parental population in maize, a tool that provides high diversity and dense recombination events to allow routine quantitative trait loci (QTL) mapping in maize. We produced 1,636 MAGIC maize recombinant inbred lines derived from eight genetically diverse founder lines. The characterization of 529 MAGIC maize lines shows that the population is a balanced, evenly differentiated mosaic of the eight founders, with mapping power and resolution strengthened by high minor allele frequencies and a fast decay of linkage disequilibrium. We show how MAGIC maize may find strong candidate genes by incorporating genome sequencing and transcriptomics data. We discuss three QTL for grain yield and three for flowering time, reporting candidate genes. Power simulations show that subsets of MAGIC maize might achieve high-power and high-definition QTL mapping. We demonstrate MAGIC maize's value in identifying the genetic bases of complex traits of agronomic relevance. The design of MAGIC maize allows the accumulation of sequencing and transcriptomics layers to guide the identification of candidate genes for a number of maize traits at different developmental stages. The characterization of the full MAGIC maize population will lead to higher power and definition in QTL mapping, and lay the basis for improved understanding of maize phenotypes, heterosis included. MAGIC maize is available to researchers.

  2. The Role of Statistics in Management Magic

    Science.gov (United States)

    Stivers, Richard

    2004-01-01

    Technology and magic both represent the human will to power - to dominate nature and ultimately humans. In a technological civilization, magic imitates technology. Modern management often entails psychological techniques (the human relations approach) and organizational techniques (the scientific approach). The heart of the latter is statistical…

  3. Characteristics of particle number and mass emissions during heavy-duty diesel truck parked active DPF regeneration in an ambient air dilution tunnel

    Science.gov (United States)

    Yoon, Seungju; Quiros, David C.; Dwyer, Harry A.; Collins, John F.; Burnitzki, Mark; Chernich, Donald; Herner, Jorn D.

    2015-12-01

    Diesel particle number and mass emissions were measured during parked active regeneration of diesel particulate filters (DPF) in two heavy-duty diesel trucks: one equipped with a DPF and one equipped with a DPF + SCR (selective catalytic reduction), and compliant with the 2007 and 2010 emission standards, respectively. The emission measurements were conducted using an ambient air dilution tunnel. During parked active regeneration, particulate matter (PM) mass emissions measured from a 2007 technology truck were significantly higher than the emissions from a 2010 technology truck. Particle number emissions from both trucks were dominated by nucleation mode particles having a diameter less than 50 nm; nucleation mode particles were orders of magnitude higher than accumulation mode particles having a diameter greater than 50 nm. Accumulation mode particles contributed 77.8 %-95.8 % of the 2007 truck PM mass, but only 7.3 %-28.2 % of the 2010 truck PM mass.

  4. Nonlinear and magic ponderomotive spectroscopy

    CERN Document Server

    Moore, Kaitlin

    2015-01-01

    In ponderomotive spectroscopy an amplitude-modulated optical standing wave is employed to probe Rydberg-atom transitions, utilizing a ponderomotive rather than a dipole-field interaction. Here, we engage nonlinearities in the modulation to drive dipole-forbidden transitions up to the fifth order. We reach transition frequencies approaching the sub-THz regime. We also demonstrate magic-wavelength conditions, which result in symmetric spectral lines with a Fourier-limited feature at the line center. Applicability to precision measurement is discussed.

  5. Ground-state properties of neutron magic nuclei

    Energy Technology Data Exchange (ETDEWEB)

    Saxena, G., E-mail: gauravphy@gmail.com [Govt. Women Engineering College, Department of Physics (India); Kaushik, M. [Shankara Institute of Technology, Department of Physics (India)

    2017-03-15

    A systematic study of the ground-state properties of the entire chains of even–even neutron magic nuclei represented by isotones of traditional neutron magic numbers N = 8, 20, 40, 50, 82, and 126 has been carried out using relativistic mean-field plus Bardeen–Cooper–Schrieffer approach. Our present investigation includes deformation, binding energy, two-proton separation energy, single-particle energy, rms radii along with proton and neutron density profiles, etc. Several of these results are compared with the results calculated using nonrelativistic approach (Skyrme–Hartree–Fock method) along with available experimental data and indeed they are found with excellent agreement. In addition, the possible locations of the proton and neutron drip-lines, the (Z, N) values for the new shell closures, disappearance of traditional shell closures as suggested by the detailed analyzes of results are also discussed in detail.

  6. Upside Down Magic, Bimagic, Palindromic Squares and Pythagoras Theorem on a Palindromic Day - 11.02.2011

    CERN Document Server

    Taneja, Inder Jeet

    2011-01-01

    In this short paper we have produced different kinds of upside down magic squares based on a palindromic day 11.02.2011. In this day appear only the algorisms 0, 1 and 2. Some of the magic squares are bimagic and some are palindromic. Magic sums of the magic squares of order 3x3, 4x4 and 5x5 satisfies the Pythagoras theorem. Bimagic squares of order 9x9 are produced with 4, 6 and 8 digits. The bimagic square of order 9x9 with 8 digits is with palindromic numbers. We have given bimagic squares of order 16x16 and 25x25, where the magic sum S1 in both the cases is same. In order to make these magic squares upside down, i.e., 180 degrees rotation, we have used the numbers in the digital form. All these magic square are only with three digits, 0, 1 and 2 appearing in the day 11.02.2011.

  7. Grid services for the MAGIC experiment

    CERN Document Server

    Forti, A C; Bigongiari, C; Cabras, G; De Angelis, A; De Lotto, B; Frailis, M; Hardt, M; Kornmayer, H; Kunze, M; Piraccini, M

    2005-01-01

    Exploring signals from the outer space has become an observational science under fast expansion. On the basis of its advanced technology the MAGIC telescope is the natural building block for the first large scale ground based high energy gamma-ray observatory. The low energy threshold for gamma-rays together with different background sources leads to a considerable amount of data. The analysis will be done in different institutes spread over Europe. Therefore MAGIC offers the opportunity to use the Grid technology to setup a distributed computational and data intensive analysis system with the nowadays available technology. Benefits of Grid computing for the MAGIC telescope are presented.

  8. Tridimensional dosimetry using MAGIC gel with formaldehyde; Dosimetria tridimensional usando gel MAGIC com formaldeido

    Energy Technology Data Exchange (ETDEWEB)

    Pavoni, Juliana F.; Baffa, Oswaldo [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Fisica e Matematica], e-mail: baffa@ffclrp.usp.br; Pike, Tina L.; Snow, Jessica; DeWerd, Larry A. [University of Wisconsin, Madison, WI (United States). Dept. of Physics. Medical Radiation Research Center

    2010-03-15

    This paper presents the application of MAGIC gel with formaldehyde (MAGIC-f) in the tri dimensional dose distribution measurement of an IMRT planning. A high similarity was found between the dose distributions measured by the gel dosimeter and the dose distributions expected by the treatment planning system (TPS) in all of the irradiated volume, this was proved by the direct overlapping of these isodoses. These results show that MAGIC-f gel is feasible for tridimensional dose distribution measurements. (author)

  9. Search for baryon and lepton number violation in heavy baryon decays and the background studies for exotic searches

    CERN Document Server

    AUTHOR|(INSPIRE)INSPIRE-00392425

    The thesis describes searches for baryon and lepton number violation in $X_{b} \\rightarrow K^{-} \\mu^{+} (X_{b} = \\Lambda^0_{b}, \\Xi_{b}^{0})$ decays. The study is performed in the \\mbox{LHC\\textit{b}} experiment using data sample corresponding to an integrated luminosity of $3.0 fb^{-1}$ of proton-proton collisions at the centre-of-mass energy of $7$TeV $8$TeV, collected in 2011 (2012), respectively. No statistically significant signal of the decays in question has been found. As a result, the upper limits have been set: $\\cal B ( \\Lambda^0_{b} \\rightarrow K^{-} \\mu^{+} ) < 3.6 \\times 10^{-9}$ and $\\cal B (\\Xi_{b}^{0} \\rightarrow K^{-} \\mu^{+} ) < 1.8 \\times 10^{-8}$ at the $95\\%$ confidence level. The second part of the thesis presents the background studies for exotic searches. The measurement of $\\sigma(b\\overline b)$ and $\\sigma(c\\overline c)$ production cross-sections with $b- (c-)$ hadron inclusive final states has been performed with data collected by the \\mbox{LHC\\textit{b}} experiment in 20...

  10. Magic wavelengths for optical cooling and trapping of lithium

    CERN Document Server

    Safronova, M S; Clark, Charles W

    2012-01-01

    Using first-principles calculations, we identify magic wavelengths for the 2s-2p and 2s-3p transitions in lithium. The ns and np atomic levels have the same ac Stark shifts at the corresponding magic wavelength, which facilitates state-insensitive optical cooling and trapping. Tune-out wavelengths for which the ground-state frequency-dependent polarizability vanishes are also calculated. Differences of these wavelengths between 6Li and 7Li are reported. Our approach uses high-precision, relativistic all-order methods in which all single, double, and partial triple excitations of the Dirac-Fock wave functions are included to all orders of perturbation theory. Recommended values are provided for a large number of Li electric-dipole matrix elements. Static polarizabilities for the 2s, 2p, 3s, 3p, and 3d levels are compared with other theory and experiment where available. Uncertainties of all recommended values are estimated. The magic wavelengths for the uv 2s-3p transition are of particular interest for the pr...

  11. Marine Ice Nuclei Collections – MAGIC (MAGIC-IN) Final Campaign Summary

    Energy Technology Data Exchange (ETDEWEB)

    DeMott, Paul J. [Colorado State Univ., Fort Collins, CO (United States); Hill, Thomas C. J. [Colorado State Univ., Fort Collins, CO (United States)

    2016-02-01

    This campaign augmented measurements obtained via deployment of the Atmospheric Radiation Measurement (ARM) Climate Research Facility’s ARM Mobile Facility (AMF) in the Marine ARM GPCI1 Investigation of Clouds (MAGIC) field campaign. The measurements, comprised of shipboard aerosol collections obtained during the five legs of the summer 2013 cruises, were sent for offline processing to measure ice nucleating particle (INP) number concentrations. The forty-three sample periods each represented, nominally, 24-hour segments during outbound and inbound transits of the Horizon Spirit. The samples were collected at locations between Los Angeles and Hawaii. Eight samples have been analyzed for immersion freezing temperature spectra thus far, using funding from other grants. Remaining samples are being frozen until support for further processing is obtained. Future analyses will investigate the inorganic/organic proportions of ice nuclei, in addition to determining the genetic composition of the overall biological community associated with INPs. Resulting correlations will be compared with other archived aerosol quantities, meteorological and ocean data (e.g., temperature, wind speed, sea surface temperature, etc…) and satellite ocean color products. These findings will ultimately aid in parameterizing oceanic (e.g., sea spray) INP emissions in regional and global scale models, when illustrating aerosol connections to cloud phases and properties. Independent future analyses of frozen filter samples, as proposed by collaborating investigators at the time of this report, will include single particle analyses of marine boundary layer aerosol compositions and morphology. The MAGIC-IN data are considered representative of the oligotrophic, low Chlorophyll-a (with the exception of near-shore) ocean regions, which exist along the MAGIC transect. Current analyses suggest that INP numbers in the marine boundary layer over this region are typically low, compared to existing

  12. Trends in total rainfall, heavy rain events, and number of dry days in San Juan, Puerto Rico, 1955-2009

    Directory of Open Access Journals (Sweden)

    Pablo A. Méndez-Lázaro

    2014-06-01

    Full Text Available Climate variability is a threat to water resources on a global scale and in tropical regions in particular. Rainfall events and patterns are associated worldwide with natural disasters like mudslides and landslides, meteorological phenomena like hurricanes, risks/hazards including severe storms and flooding, and health effects like vector-borne and waterborne diseases. Therefore, in the context of global change, research on rainfall patterns and their variations presents a challenge to the scientific community. The main objective of this research was to analyze recent trends in precipitation in the San Juan metropolitan area in Puerto Rico and their relationship with regional and global climate variations. The statistical trend analysis of precipitation was performed with the nonparametric Mann-Kendall test. All stations showed positive trends of increasing annual rainfall between 1955 and 2009. The winter months of January and February had an increase in monthly rainfall, although winter is normally a dry season on the island. Regarding dry days, we found an annual decreasing trend, also specifically in winter. In terms of numbers of severe rainfall events described as more than 78 mm in 24 hours, 63 episodes have occurred in the San Juan area in the last decade, specifically in the 2000-2009 time frame, with an average of 6 severe events per year. The majority of the episodes occurred in summer, more frequently in August and September. These results can be seen as a clear example of the complexity of spatial and temporal of rainfall distribution over a tropical city.

  13. Effects of biodiesel, engine load and diesel particulate filter on nonvolatile particle number size distributions in heavy-duty diesel engine exhaust.

    Science.gov (United States)

    Young, Li-Hao; Liou, Yi-Jyun; Cheng, Man-Ting; Lu, Jau-Huai; Yang, Hsi-Hsien; Tsai, Ying I; Wang, Lin-Chi; Chen, Chung-Bang; Lai, Jim-Shoung

    2012-01-15

    Diesel engine exhaust contains large numbers of submicrometer particles that degrade air quality and human health. This study examines the number emission characteristics of 10-1000 nm nonvolatile particles from a heavy-duty diesel engine, operating with various waste cooking oil biodiesel blends (B2, B10 and B20), engine loads (0%, 25%, 50% and 75%) and a diesel oxidation catalyst plus diesel particulate filter (DOC+DPF) under steady modes. For a given load, the total particle number concentrations (N(TOT)) decrease slightly, while the mode diameters show negligible changes with increasing biodiesel blends. For a given biodiesel blend, both the N(TOT) and mode diameters increase modestly with increasing load of above 25%. The N(TOT) at idle are highest and their size distributions are strongly affected by condensation and possible nucleation of semivolatile materials. Nonvolatile cores of diameters less than 16 nm are only observed at idle mode. The DOC+DPF shows remarkable filtration efficiency for both the core and soot particles, irrespective of the biodiesel blend and engine load under study. The N(TOT) post the DOC+DPF are comparable to typical ambient levels of ≈ 10(4)cm(-3). This implies that, without concurrent reductions of semivolatile materials, the formation of semivolatile nucleation mode particles post the after treatment is highly favored. Copyright © 2011 Elsevier B.V. All rights reserved.

  14. Insurance, risk, and magical thinking.

    Science.gov (United States)

    Tykocinski, Orit E

    2008-10-01

    The possession of an insurance policy may not only affect the severity of a potential loss but also its perceived probability. Intuitively, people may feel that if they are insured nothing bad is likely to happen, but if they do not have insurance they are at greater peril. In Experiment 1, respondents who were reminded of their medical insurance felt they were less likely to suffer health problems in the future compared to people who were not reminded of their medical insurance. In Experiment 2a, participants who were unable to purchase travel insurance judged the probability of travel-related calamities higher compared to those who were insured. These results were replicated in Experiment 3a in a simulation of car accident insurance. The findings are explained in terms of intuitive magical thinking, specifically, the negative affective consequences of "tempting fate" and the sense of safety afforded by the notion of "being covered."

  15. Magical beliefs and rituals in young children.

    Science.gov (United States)

    Evans, David W; Milanak, Melissa E; Medeiros, Bethany; Ross, Jennifer L

    2002-01-01

    Thirty-one children were administered a structured interview that assessed their beliefs about magic, tricks and wishes. Children were also presented with demonstrations of magic tricks/illusions, and asked to offer explanations as to how they worked. Parents completed the Childhood Routines Inventory (CRI), a 19-item parent report measure that assesses children's rituals, habits and sensory-perceptual experiences that we have termed "compulsive-like" behavior. Results indicated that children's rituals and compulsions were positively related to their magical beliefs, and inversely related to their uses of concrete, physical explanations to describe various phenomena. In particular, children's beliefs about the effects of wishing were most consistently correlated with their compulsive-like rituals and routines. The findings extended the work on magical beliefs and obsessive-compulsive phenomena to the normative manifestation of compulsive behaviors found in typical development.

  16. People Interview: The science behind the 'magic'

    Science.gov (United States)

    2010-01-01

    INTERVIEW The science behind the 'magic' Grand Illusions is a website dedicated to science-based phenomena, fun and games, and optical illusions. David Smith speaks to two of its key members—Hendrik Ball and Tim Rowett.

  17. A Magic-Real Gap in Architecture

    DEFF Research Database (Denmark)

    Dayer, Carolina

    2016-01-01

    In 1925, German art critic Franz Roh formalized the notion of Magic Realism (magischer Realismus) as a celebration of everyday life. In Italian literature, the same notion was explored in the works of Massimo Bontempelli. But it was the architect Friedrich Kiesler who imported the notion into arc......In 1925, German art critic Franz Roh formalized the notion of Magic Realism (magischer Realismus) as a celebration of everyday life. In Italian literature, the same notion was explored in the works of Massimo Bontempelli. But it was the architect Friedrich Kiesler who imported the notion...... into architecture, stating that ‘Magic Architecture ... holds the balance between the two extremes of man’, his ‘desire for the machine’ and technology on the one hand, his ‘denial of science’ on the other. This paper follows the development of the notion of Magic Realism throughout the twentieth century...

  18. R-matrices and the magic square

    CERN Document Server

    Westbury, B W

    2003-01-01

    The distinguished representations associated with the rows of the Freudenthal magic square have a uniform tensor product graph with edges labelled by linear functions of the dimension of the corresponding division algebra.

  19. Working wonders? investigating insight with magic tricks.

    Science.gov (United States)

    Danek, Amory H; Fraps, Thomas; von Müller, Albrecht; Grothe, Benedikt; Ollinger, Michael

    2014-02-01

    We propose a new approach to differentiate between insight and noninsight problem solving, by introducing magic tricks as problem solving domain. We argue that magic tricks are ideally suited to investigate representational change, the key mechanism that yields sudden insight into the solution of a problem, because in order to gain insight into the magicians' secret method, observers must overcome implicit constraints and thus change their problem representation. In Experiment 1, 50 participants were exposed to 34 different magic tricks, asking them to find out how the trick was accomplished. Upon solving a trick, participants indicated if they had reached the solution either with or without insight. Insight was reported in 41.1% of solutions. The new task domain revealed differences in solution accuracy, time course and solution confidence with insight solutions being more likely to be true, reached earlier, and obtaining higher confidence ratings. In Experiment 2, we explored which role self-imposed constraints actually play in magic tricks. 62 participants were presented with 12 magic tricks. One group received verbal cues, providing solution relevant information without giving the solution away. The control group received no informative cue. Experiment 2 showed that participants' constraints were suggestible to verbal cues, resulting in higher solution rates. Thus, magic tricks provide more detailed information about the differences between insightful and noninsightful problem solving, and the underlying mechanisms that are necessary to have an insight. Copyright © 2013 Elsevier B.V. All rights reserved.

  20. Contextuality supplies the 'magic' for quantum computation.

    Science.gov (United States)

    Howard, Mark; Wallman, Joel; Veitch, Victor; Emerson, Joseph

    2014-06-19

    Quantum computers promise dramatic advantages over their classical counterparts, but the source of the power in quantum computing has remained elusive. Here we prove a remarkable equivalence between the onset of contextuality and the possibility of universal quantum computation via 'magic state' distillation, which is the leading model for experimentally realizing a fault-tolerant quantum computer. This is a conceptually satisfying link, because contextuality, which precludes a simple 'hidden variable' model of quantum mechanics, provides one of the fundamental characterizations of uniquely quantum phenomena. Furthermore, this connection suggests a unifying paradigm for the resources of quantum information: the non-locality of quantum theory is a particular kind of contextuality, and non-locality is already known to be a critical resource for achieving advantages with quantum communication. In addition to clarifying these fundamental issues, this work advances the resource framework for quantum computation, which has a number of practical applications, such as characterizing the efficiency and trade-offs between distinct theoretical and experimental schemes for achieving robust quantum computation, and putting bounds on the overhead cost for the classical simulation of quantum algorithms.

  1. Magic cards: a new augmented-reality approach.

    Science.gov (United States)

    Demuynck, Olivier; Menendez, José Manuel

    2013-01-01

    Augmented reality (AR) commonly uses markers for detection and tracking. Such multimedia applications associate each marker with a virtual 3D model stored in the memory of the camera-equipped device running the application. Application users are limited in their interactions, which require knowing how to design and program 3D objects. This generally prevents them from developing their own entertainment AR applications. The Magic Cards application solves this problem by offering an easy way to create and manage an unlimited number of virtual objects that are encoded on special markers.

  2. Entropy and the Magic Flute

    Science.gov (United States)

    Morowitz, Harold J.

    1996-10-01

    Harold Morowitz has long been highly regarded both as an eminent scientist and as an accomplished science writer. The essays in The Wine of Life , his first collection, were hailed by C.P. Snow as "some of the wisest, wittiest and best informed I have ever read," and Carl Sagan called them "a delight to read." In later volumes he established a reputation for a wide-ranging intellect, an ability to see unexpected connections and draw striking parallels, and a talent for communicating scientific ideas with optimism and wit. With Entropy and the Magic Flute , Morowitz once again offers an appealing mix of brief reflections on everything from litmus paper to the hippopotamus to the sociology of Palo Alto coffee shops. Many of these pieces are appreciations of scientists that Morowitz holds in high regard, while others focus on health issues, such as America's obsession with cheese toppings. There is also a fascinating piece on the American Type Culture Collection, a zoo or warehouse for microbes that houses some 11,800 strains of bacteria, and over 3,000 specimens of protozoa, algae, plasmids, and oncogenes. Here then are over forty light, graceful essays in which one of our wisest experimental biologists comments on issues of science, technology, society, philosophy, and the arts.

  3. A Simple Parameterization of 3 x 3 Magic Squares

    Science.gov (United States)

    Trenkler, Gotz; Schmidt, Karsten; Trenkler, Dietrich

    2012-01-01

    In this article a new parameterization of magic squares of order three is presented. This parameterization permits an easy computation of their inverses, eigenvalues, eigenvectors and adjoints. Some attention is paid to the Luoshu, one of the oldest magic squares.

  4. A Simple Parameterization of 3 x 3 Magic Squares

    Science.gov (United States)

    Trenkler, Gotz; Schmidt, Karsten; Trenkler, Dietrich

    2012-01-01

    In this article a new parameterization of magic squares of order three is presented. This parameterization permits an easy computation of their inverses, eigenvalues, eigenvectors and adjoints. Some attention is paid to the Luoshu, one of the oldest magic squares.

  5. Origins of magic: review of genetic and epigenetic effects.

    Science.gov (United States)

    Ramagopalan, Sreeram V; Knight, Marian; Ebers, George C; Knight, Julian C

    2007-12-22

    To assess the evidence for a genetic basis to magic. Literature review. Harry Potter novels of J K Rowling. Muggles, witches, wizards, and squibs. Limited. Family and twin studies, magical ability, and specific magical skills. Magic shows strong evidence of heritability, with familial aggregation and concordance in twins. Evidence suggests magical ability to be a quantitative trait. Specific magical skills, notably being able to speak to snakes, predict the future, and change hair colour, all seem heritable. A multilocus model with a dominant gene for magic might exist, controlled epistatically by one or more loci, possibly recessive in nature. Magical enhancers regulating gene expressionmay be involved, combined with mutations at specific genes implicated in speech and hair colour such as FOXP2 and MCR1.

  6. Pulsar observations with the MAGIC telescopes

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Jezabel R.; Dazzi, F.; Idec, W.; Moretti, E.; Schweizer, T. [Max-Planck-Institut fuer Physik, Munich (Germany); Bonnefoy, S.; Carreto-Fidalgo, D.; Lopez, M. [Universitad Compultense, Madrid (Spain); Galindo, D.; Zanin, R. [Universitat de Barcelona, ICC/IEEC-UB, Barcelona (Spain); Ona Wilhelmi, E. de [Institute for Space Sciences (CSIC/IEEC), Barcelona (Spain); Reichardt, I. [Istituto Nazionale di Fisica Nucleare (INFN), Padova (Italy); Saito, T. [Kyoto University, Hakubi Center (Japan); Collaboration: MAGIC-Collaboration

    2016-07-01

    MAGIC is a stereoscopic system of two IACTs, located at the ORM (Spain). Since 2008, MAGIC has played a big role in Pulsar physics due to the discovery of the first VHE gamma-ray emission from the Crab pulsar. Such a discovery was possible thanks to a revolutionary trigger technique used in the initial MAGIC mono system, the Sum-Trigger, that provided a 25 GeV energy threshold. The study of the Crab keeps providing numerous important results for the understanding of pulsar physics. The most recent ones are the bridge emission at VHE and the detection of the Crab pulsations at TeV energies. MAGIC has been also searching for new pulsars, providing recently interesting results about the Geminga pulsar and nebula. This talk reviews the essential MAGIC results about VHE pulsars and their implications for pulsar physics.Also we discuss the development of a new stereo trigger system, the Sum-Trigger-II, and the importance of the observation windows that this system opens for the study of VHE pulsars.

  7. Fashion Magazines and Fashion as a System of Magic

    OpenAIRE

    Moeran, Brian

    2016-01-01

    This article is about international women’s fashion magazines―specifically Elle, Harper’s Bazaar, Marie Claire and Vogue―and the part they play in creating and sustaining the fashion industry as a system of magic. That it is indeed a system may be seen in the fact that, as with other systems of magic, the fashion industry makes use of magicians, magical rites, and magical representations.

  8. The Moore-Penrose Inverse of Block Magic Rectangles

    Science.gov (United States)

    Hakopian, Y. R.; Eloyan, A. N.

    2007-01-01

    As is known, a semi-magic square is an "n x n" matrix having the sum of entries in each row and each column equal to a constant. This note generalizes this notion and introduce a special class of block matrices called "block magic rectangles." It is proved that the Moore-Penrose inverse of a block magic rectangle is also a block magic rectangle.

  9. Effectiveness of 1-2-3 Magic for Teachers to Improve Classroom Management and Discipline

    Science.gov (United States)

    Barton, Cindy L.

    2013-01-01

    It was not known how and to what extent the implementation of "1-2-3 Magic for Teachers" would change the behaviors of disruptive students. The purpose of this study was to reduce the number of behavioral incidents and improve student engagement in learning to produce a learning environment conducive to academic success. The target…

  10. Superallowed Gamow-Teller decay of the doubly magic nucleus Sn-100

    NARCIS (Netherlands)

    Hinke, C. B.; Boehmer, M.; Boutachkov, P.; Faestermann, T.; Geissel, H.; Gerl, J.; Gernhaeuser, R.; Gorska, M.; Gottardo, A.; Grawe, H.; Grebosz, J. L.; Kruecken, R.; Kurz, N.; Liu, Z.; Maier, L.; Nowacki, F.; Pietri, S.; Podolyak, Zs; Sieja, K.; Steiger, K.; Straub, K.; Weick, H.; Wollersheim, H. -J.; Woods, P. J.; Al-Dahan, N.; Alkhomashi, N.; Atac, A.; Blazhev, A.; Braun, N. F.; Celikovic, I. T.; Davinson, T.; Dillmann, I.; Domingo-Pardo, C.; Doornenbal, P. C.; de France, G.; Farrelly, G. F.; Farinon, F.; Goel, N.; Habermann, T. C.; Hoischen, R.; Janik, R.; Karny, M.; Kaskas, A.; Kojouharov, I. M.; Kroell, Th; Litvinov, Y.; Myalski, S.; Nebel, F.; Nishimura, S.; Nociforo, C.; Nyberg, J.; Parikh, A. R.; Prochazka, A.; Regan, P. H.; Rigollet, C.; Schaffner, H.; Scheidenberger, C.; Schwertel, S.; Soederstroem, P. -A.; Steer, S. J.; Stolz, A.; Strmen, P.

    2012-01-01

    The shell structure of atomic nuclei is associated with 'magic numbers' and originates in the nearly independent motion of neutrons and protons in a mean potential generated by all nucleons. During beta(+)-decay, a proton transforms into a neutron in a previously not fully occupied orbital, emitting

  11. Comment on `Magic strains in face-centered and body-centered cubic lattices'

    NARCIS (Netherlands)

    Waal, van de Benjamin W.

    1990-01-01

    The six symmetry-related so-called magic strain tensors that transform a f.c.c. lattice (or a b.c.c. lattice) into itself, which have been reported recently by Boyer [Acta Cryst. (1989), A45, FC29-FC32] are not unique: an infinite number of displacement tensors can be constructed that transform one

  12. Managing expectations from our land: 3 is the magic number.

    Science.gov (United States)

    Creamer, Rachel; Schulte, Rogier; O'Sullivan, Lilian; Staes, Jan; Vrebos, Dirk; Jones, Arwyn

    2017-04-01

    In recent years, sustainable food production has risen to the top of the EU policy agenda. Europe's land is now expected to provide multiple ecosystem services (soil functions) for society. These include: i) food production, ii) carbon storage, iii) the provision of clean water, iv) habitats for biodiversity and v) nutrient cycling. A tension exists between the demand for and supply of these soil functions on our land. We cannot expect all soil functions to be delivered simultaneously to optimal capacity, but with careful decision making we can optimise our soils to provide multiple functions. Our societal demands also vary in spatial extent, for example we may require nutrient cycling and food production to be focussed at local scale, but carbon sequestration may be a national target to reduce greenhouse gas emissions. Every day, farmers make decisions on how they manage their land and soil. At the same time, national and European policy makers make long-term decisions on how to manage their soil resources at larger scales. Therefore, the contemporary challenge for researchers and stakeholders is to link the decision making on land management across scales, so that the practicalities of how farmers make decisions is reflected in policy formation and that policies enable farmers to make decisions that meet EU policy objectives. LANDMARK (LAND Management: Assessment, Research, Knowledge base) is a Horizon 2020 consortium of 22 partner institutes from 14 EU countries plus Switzerland, China and Brazil. The primary objective of the LANDMARK project is to provide a policy framework for Functional Land Management at EU level. This implies the identification of policy instruments that could guide the management of soil functions at the appropriate scale. This presentation will provide an overview of the challenge faced across these scales, from local to European, it will demonstrate how local decision making must try and account for the delivery of at least three soil functions to contribute to sustainable soil management.

  13. Magic Numbers in Molecular Clusters: A Probe for Chemical Reactivity

    Science.gov (United States)

    1992-05-29

    gas phase reactions of DME with DME + or any of its frag- ment ions giving rise to methanol ions. The reaction (s) giving rise to the { DME )nCH 3 OH 2... methanol to give DME but to date, the mechanism of the initial C-C bond formation remains to be unequivocally established. 2 0 The initial step of...in proto- nated cluster ions. Several ion/molecule reactions in the DME system have been reported in 10 which methanol was suggested as the neutral

  14. The magic of numbers: malignant melanoma between science and pseudoscience.

    Science.gov (United States)

    Weyers, Wolfgang

    2011-06-01

    In 2009, a new system for staging and classification of malignant melanoma has been proposed by the American Joint Committee on Cancer (AJCC). The AJCC recommends that staging of primary melanoma be based on 3 criteria, namely, thickness, ulceration, and mitotic rate, the latter substituting Clark levels in the previous classification. In melanomas measuring ≤1 mm in thickness, ulceration or finding of single mitotic figure in the dermis defines stage T1b. According to the AJCC, sentinel lymph node dissection should be considered for those melanomas because of a significantly impaired prognosis. As with other prognostic parameters, however, assessment of mitotic rate, with one mitotic figure being the cutoff point, is highly unreliable, and statistics based on such data lack validity. Despite the large database being employed, they may be pseudoscience rather than science.

  15. The crazy but magic language

    Institute of Scientific and Technical Information of China (English)

    唐雯

    2015-01-01

    You have learned English for many years,but in fact you don’t know what you learned is a crazy language.The color in English is totally confused.A white day is nothing to do with white,it means a lucky day.A white elephant is no elephant,it means a heavy burden.While a white lie is not

  16. High Resolution Magic Angle Spinning Nuclear Magnetic Resonance (HRMAS NMR) for Studies of Reactive Fabrics

    Science.gov (United States)

    2015-11-01

    Magnetic Resonance (HRMAS NMR) for Studies of Reactive Fabrics 5a. CONTRACT NUMBER W911SR-11-C-0047 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER...ECBC-TR-1326 HIGH RESOLUTION MAGIC ANGLE SPINNING NUCLEAR MAGNETIC RESONANCE (HRMAS NMR) FOR STUDIES OF REACTIVE FABRICS David J. McGarvey...unlimited. 13. SUPPLEMENTARY NOTES 14. ABSTRACT An analytical chemistry method is described for measuring the reactivity and permeation of

  17. Atomic nuclei decay modes by spontaneous emission of heavy ions

    Energy Technology Data Exchange (ETDEWEB)

    Poenaru, D.N.; Ivascu, M.; Sndulescu, A.; Greiner, W.

    1985-08-01

    The great majority of the known nuclides with Z>40, including the so-called stable nuclides, are metastable with respect to several modes of spontaneous superasymmetric splitting. A model extended from the fission theory of alpha decay allows one to estimate the lifetimes and the branching ratios relative to the alpha decay for these natural radioactivities. From a huge amount of systematic calculations it is concluded that the process should proceed with maximum intensity in the trans-lead nuclei, where the minimum lifetime is obtained from parent-emitted heavy ion combinations leading to a magic (/sup 208/Pb) or almost magic daughter nucleus. More than 140 nuclides with atomic number smaller than 25 are possible candidates to be emitted from heavy nuclei, with half-lives in the range of 10/sup 10/--10/sup 30/ s: /sup 5/He, /sup 8en-dash10/Be, /sup 11,12/B, /sup 12en-dash16/C, /sup 13en-dash17/N, /sup 15en-dash22/O, /sup 18en-dash23/F, /sup 20en-dash26/Ne, /sup 23en-dash28/Na, /sup 23en-dash30/Mg, /sup 27en-dash32/Al, /sup 28en-dash36/Si, /sup 31en-dash39/P, /sup 32en-dash42/S, /sup 35en-dash45/Cl, /sup 37en-dash47/Ar, /sup 40en-dash49/ K, . .Ca, /sup 44en-dash53/ Sc, /sup 46en-dash53/Ti, /sup 48en-dash54/V, and /sup 49en-dash55/ Cr. The shell structure and the pairing effects are clearly manifested in these new decay modes.

  18. Magic-T Junction using Microstrip/Slotline Transitions

    Science.gov (United States)

    U-yen, Kongpop; Wollack, Edward J.; Doiron, Terence

    2008-01-01

    An improved broadband planar magic-T junction that incorporates microstrip/slotline transitions has been developed. In comparison with a prior broadband magic-T junction incorporating microstrip/slotline transitions, this junction offers superior broadband performance. In addition, because this junction is geometrically simpler and its performance is less affected by fabrication tolerances, the benefits of the improved design can be realized at lower fabrication cost. There are potential uses for junctions like this one in commercial microwave communication receivers, radar and polarimeter systems, and industrial microwave instrumentation. A magic-T junction is a four-port waveguide junction consisting of a combination of an H-type and an E-type junction. An E-type junction is so named because it includes a junction arm that extends from a main waveguide in the same direction as that of the electric (E) field in the waveguide. An H-type junction is so named because it includes a junction arm parallel to the magnetic (H) field in a main waveguide. A magic-T junction includes two input ports (here labeled 1 and 2, respectively) and two output ports (here labeled E and H, respectively). In an ideal case, (1) a magic-T junction is lossless, (2) the input signals add (that is, they combine in phase with each other) at port H, and (3) the input signals subtract (that is, they combine in opposite phase) at port E. The prior junction over which the present junction is an improvement affords in-phase-combining characterized by a broadband frequency response, and features a small slotline area to minimize in-band loss. However, with respect to isolation between ports 1 and 2 and return loss at port E, it exhibits narrowband frequency responses. In addition, its performance is sensitive to misalignment of microstrip and slotline components: this sensitivity is attributable to a limited number of quarter-wavelength (lambda/4) transmission-line sections for matching impedances

  19. A Tragic Tale of Magic and Philosophy

    NARCIS (Netherlands)

    Ashdown, L.S.

    2004-01-01

    In recent years, an initiative is underway to reclaim Wittgenstein's reflections on religion from those who are said to have distorted them.(1) Brian Clack's essay "Wittgenstein and Magic" represents a distressing turn in the current discussions of Wittgenstein and religion. His argument is roughly

  20. Magic, Morals and Health: Plus 40 Years

    Science.gov (United States)

    Young, Michael; Valois, Robert F.

    2010-01-01

    In the article "Magic, Morals and Health" the reader is treated to Dr. Warren Johnson's thoughts about health and society, and the role of health educators. If one stays with Dr. Johnson's train of thought, one will find Dr. Johnson is concerned that: (1) A large segment of society tends to base at least some of their beliefs about health on…

  1. What Is So Magic about Harry?

    Science.gov (United States)

    Nelson, Cole; Nelson, Brooke

    2000-01-01

    Presents the comments of an 11-year-old and his mother regarding what is so magical about the Harry Potter series of books. Notes the child enjoyed the fantasy aspects and the animals in the books; and the mother appreciates the sheer fun of reading the books and that the characters show sensitivity and caring for each other. (RS)

  2. Promoting Reasoning through the Magic V Task

    Science.gov (United States)

    Bragg, Leicha A.; Widjaja, Wanty; Loong, Esther Yook-Kin; Vale, Colleen; Herbert, Sandra

    2015-01-01

    Reasoning in mathematics plays a critical role in developing mathematical understandings. In this article, Bragg, Loong, Widjaja, Vale & Herbert explore an adaptation of the Magic V Task and how it was used in several classrooms to promote and develop reasoning skills.

  3. Promoting Reasoning through the Magic V Task

    Science.gov (United States)

    Bragg, Leicha A.; Widjaja, Wanty; Loong, Esther Yook-Kin; Vale, Colleen; Herbert, Sandra

    2015-01-01

    Reasoning in mathematics plays a critical role in developing mathematical understandings. In this article, Bragg, Loong, Widjaja, Vale & Herbert explore an adaptation of the Magic V Task and how it was used in several classrooms to promote and develop reasoning skills.

  4. The Magic Sign: Acids, Bases, and Indicators.

    Science.gov (United States)

    Phillips, Donald B.

    1986-01-01

    Presents an approach that is used to introduce elementary and junior high students to a series of activities that will provide concrete experiences with acids, bases, and indicators. Provides instructions and listings of needed solutions and materials for developing this "magic sign" device. Includes background information and several…

  5. The Magic Moment: Creating Color Harmony

    Science.gov (United States)

    Bartges, Dan

    2009-01-01

    If there is a truly magic moment in art class, it must be when a student--of any age--attains a working knowledge of color's core principles. At that point, she or he becomes able to consistently create color harmony in any painting, regardless of the subject matter. From then on, that student gains greater confidence, can paint better pictures…

  6. The deconstruction of magic: rereading, rethinking Erickson.

    Science.gov (United States)

    Sparks, J A

    2000-01-01

    This article examines the case history writings of Milton Erickson as literary texts. A deconstructive analysis reveals that the modernist assumption of therapist as magical healer disguises the role clients play in their own change. Hypothetically constructed case transcripts contrasted with excerpts from Erickson (see Rossi, 1980) illustrate how the inclusion of client voice enriches understanding of therapeutic change.

  7. String theory: results, magic and doubts

    CERN Document Server

    Rabinovici, Eliezer

    2013-01-01

    This talk was given at a special place and on a special occasion for a special audience. It describes the results, magic and doubts that an attempt to construct a theory based on the idea that the basic constituents of matter can also be extended objects has led to. The emphasis is on the spirit behind the ideas.

  8. Laser cooling and trapping of potassium at magic wavelengths

    CERN Document Server

    Safronova, M S; Clark, Charles W

    2013-01-01

    We carry out a systematic study of the static and dynamic polarizabilities of the potassium atom using a first-principles high-precision relativistic all-order method in which all single, double, and partial triple excitations of the Dirac-Fock wave functions are included to all orders of perturbation theory. Recommended values are provided for a large number of electric-dipole matrix elements. Static polarizabilities of the 4s, 4p_j, 5s, 5p_j, and 3d_j states are compared with other theory and experiment where available. We use the results of the polarizability calculations to identify magic wavelengths for the 4s-np transitions for $n = 4, 5$, i.e. those wavelengths for which the two levels have the same ac Stark shifts. These facilitate state-insensitive optical cooling and trapping. The magic wavelengths for the $4s-5p$ transitions are of particular interest for attaining a quantum gas of potassium at high phase-space density. We find 20 such wavelengths in the technically interest region of 1050-1130 nm....

  9. Interplay between collective and single particle excitations around neutron-rich doubly-magic nuclei

    Directory of Open Access Journals (Sweden)

    Leoni S.

    2016-01-01

    Full Text Available The excitation spectra of nuclei with one or two particles outside a doubly-magic core are expected to be dominated, at low energy, by the couplings between phonon excitations of the core and valence particles. A survey of the experimental situation is given for some nuclei lying in close proximity of neutron-rich doubly-magic systems, such as 47,49Ca, 133Sb and 210Bi. Data are obtained with various types of reactions (multinucleon transfer with heavy ions, cold neutron capture and neutron induced fission of 235U and 241Pu targets, with the employment of complex detection systems based on HPGe arrays. A comparison with theoretical calculations is also presented, in terms of large shell model calculations and of a phenomenological particle-phonon model. In the case of 133Sb, a new microscopic “hybrid” model is introduced: it is based on the coupling between core excitations (both collective and non-collective of the doubly-magic core and the valence nucleon, using the Skyrme effective interaction in a consistent way.

  10. The role of doubly magic {sup 208}Pb and its neighbour nuclei in cluster radioactivity

    Energy Technology Data Exchange (ETDEWEB)

    Santhosh, K.P.; Priyanka, B. [Kannur University, School of Pure and Applied Physics, Payyanur (India)

    2013-06-15

    Using the Coulomb and proximity potential model (CPPM) we have investigated the cluster decays of the isotopes {sup 212-240}Pa, {sup 219-245}Np, {sup 228-246}Pu, {sup 230-249}Am and {sup 232-252}Cm leading to doubly magic {sup 208}Pb and its neighboring nuclei, which are not experimentally detected but which may be detectable in the future. It is found that most of the decays are favourable for experimental measurements (i.e., T{sub 1/2}<10{sup 30} s) and this observation will serve as a guide to future experiments. Our study reveals the role of doubly magic {sup 208}Pb daughter nuclei and near doubly magic nuclei in the cluster decay process. In order to make a comparison with CPPM we also calculated the logarithmic half-lives using the Universal formula for the cluster decay (UNIV) by Poenaru et al., the Universal Decay Law (UDL) and the Scaling Law of Horoi et al., and they are found to be in good agreement. The Geiger-Nuttall plots of log{sub 10}(T{sub 1/2}) versus Q{sup -1/2} for various clusters from different isotopes of heavy parent nuclei have been studied and are found to be linear. (orig.)

  11. Upgrade of the MAGIC telescopes single wavelength micro power LIDAR system

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, Dominik [Max-Planck-Institut fuer Physik, Muenchen (Germany); Collaboration: MAGIC-Collaboration

    2016-07-01

    Since 2011 a single wavelength LIDAR system is operated alongside the observations of the MAGIC telescopes. It is used for real-time monitoring of the atmospheric transmission and for detecting cloud layers within the field of view of MAGIC. The system uses a pulsed Nd:YAG laser with 532 nm wavelength and a pulse energy of 5 μJ as transmitter. The receiver is mounted to a 60 cm spherical single mirror telescope with a F/D ratio of 2.5. To compensate for the low light intensities a sensitive detector with the capability of single photon detection as well as charge integration is needed. For this purpose, a hybrid photo diode with a peak quantum efficiency of 55% an a pulse width of 2.5ns is used in a custom designed detector. The analog signal is recorded by a computer mounted 8-bit FADC with 200 MS/s. A signal analysis algorithm converts the LIDAR return signal into a number of single photoelectron counts per range bin. The atmospheric transmission is calculated by fitting a Rayleigh back-scattering model with a sliding window. The resulting transmission profile is used to correct the MAGIC gamma ray data for adverse weather conditions. After five years of data taking the MAGIC LIDAR system is upgraded with a stronger laser and a new detector unit in order to extend the measurement range and to optimize the operation.

  12. Investigation on Qiong yao shen shu (Qiongyao's Magical Book).

    Science.gov (United States)

    Huang, L

    1999-01-01

    Written in about the period of late Yuan to early Ming dynasties, Qiongyao's Magical Book is attributed to a Taoist who was also conversant with acupunture art. By investigation, it is found that there are, at least, three books carrying the same title of Qiongyao's Magical Book, including a 3 volume Qiongyao's Magical Book now lost; a 3 - volume Qiongyao's Magical Book of Discovery (also called The Acupuncture Classic of Qiongyao the Immortal printed in the Ming dynasty, which is entirely different from the previous one and is an apocrypha; and a 4 - volume Qiongyao's Magical Book printed in the Qing dynasty also called Qiongyao's Great Collections of Magical Books wiich is a mixture of authentic and apocryphal texts in which 2 medical books irrelevant to the original are attached to the end of volume 3, with supplements by later writers intermingled in other volumes.

  13. Watching films with magical content facilitates creativity in children.

    Science.gov (United States)

    Subbotsky, Eugene; Hysted, Claire; Jones, Nicola

    2010-08-01

    Two experiments examined the possible link between magical thinking and creativity in preschool children. In Exp. 1, 4- and 6-yr.-old children were shown a film with either a magical or nonmagical theme. Results indicated that the mean scores of children shown the magical film was significantly higher than that of children watching the nonmagical film on the majority of subsequent creativity tests for both age groups. This trend was also found for 6-yr.-olds' drawings of impossible items. In Exp. 2, Exp. 1 was replicated successfully with 6- and 8-yr.-old children. Exposing children to a film with a magical theme did not affect their beliefs about magic. The results were interpreted to accentuate the role of magical thinking in children's cognitive development. Classroom implications of the results were also discussed.

  14. The New Performance Magic Horse Show by Sichuan Circus Appearing in Chengdu

    Institute of Scientific and Technical Information of China (English)

    马洁

    2007-01-01

    After years of hard working and coordinated with acrobatic and circus experts, Sichuan Circus created an excellent modern Magic Horse Show. Besides acrobatics, magic, comedy and singing and dancing, Magic Horse

  15. MAGIC-II Camera Slow Control Software

    CERN Document Server

    Steinke, B; Tridon, D Borla

    2009-01-01

    The Imaging Atmospheric Cherenkov Telescope MAGIC I has recently been extended to a stereoscopic system by adding a second 17 m telescope, MAGIC-II. One of the major improvements of the second telescope is an improved camera. The Camera Control Program is embedded in the telescope control software as an independent subsystem. The Camera Control Program is an effective software to monitor and control the camera values and their settings and is written in the visual programming language LabVIEW. The two main parts, the Central Variables File, which stores all information of the pixel and other camera parameters, and the Comm Control Routine, which controls changes in possible settings, provide a reliable operation. A safety routine protects the camera from misuse by accidental commands, from bad weather conditions and from hardware errors by automatic reactions.

  16. Magical arts: the poetics of play.

    Science.gov (United States)

    Jacobus, Mary

    2005-01-01

    The paper argues that links between play and magic in British Object Relations point to the persistence of aesthetic concerns within psychoanalysis. Magical thinking is present in British Object Relations psychoanalysis from its beginnings in Klein's play technique and early aesthetic writings, surfacing elsewhere in Susan Isaac's educational experiments and her theories of metaphor. Marion Milner's clinical account of the overlapping areas of illusion and symbol-formation in a boy's war-games link the primitive rituals of Frazer's "The Golden Bough" with her patient's creativity. In Winnicott's concept of the transitional object, the theory of play achieves its apotheosis as a diffusive theory of culture or "private madness," and as a paradigm for psychoanalysis itself. Tracing the non-positivistic, mystical, and poetical elements in British Object Relations underlines the extent to which aesthetics is not just entangled with psychoanalysis, but constitutive of it in its mid-twentieth century manifestations.

  17. A new light boson from MAGIC observations?

    CERN Document Server

    Roncadelli, Marco; Mansutti, Oriana

    2009-01-01

    Recent detection of blazar 3C279 by MAGIC has confirmed previous indications by H.E.S.S. that the Universe is more transparent to very-high-energy gamma rays than currently thought. This circumstance can be reconciled with observations of nearby blazars provided that photon oscillations into a very light Axion-Like Particle occur in extragalactic magnetic fields. The emerging "DARMA scenario" can be tested in the near future by the satellite-borne Fermi LAT detector as well as by the ground-based Imaging Atmospheric Cherenkov Telescopes H.E.S.S., MAGIC, CANGAROO III, VERITAS and by the Extensive Air Shower arrays ARGO-YBJ and MILAGRO.

  18. Magic-angle thermal desorption mass spectroscopy

    Science.gov (United States)

    Pauls, Steven W.; Campbell, Charles T.

    1990-02-01

    Accurate quantitative measurements of desorption rates or adsorbate coverages in thermal desorption mass spectroscopy (TDS) using line-of-sight mass spectrometers are hindered by the fact that the angular distributions of desorption flux can vary widely from desorbate to desorbate, ranging from cos 1ø to cos 9 ø for most species studied to date (ø = polar angle from surface normal). These differences can easily lead to errors exceeding 400% in measuring the relative desorption rates of different species. We show here that, by placing the mass spectrometer's ion source or entrance aperture at a "magic-angle" ø mthese errors can be reduced to less than 26% maximum deviation (or ± 7% standard deviation). Depending upon the sample-to-detector distance, ø m varies from ~ 42° to 34°. It is recommended that TDS experiments be performed at this "magic-angle" for improvement in the quantitative accuracy of coverage or rate measurements.

  19. MAGIC: Model and Graphic Information Converter

    Science.gov (United States)

    Herbert, W. C.

    2009-01-01

    MAGIC is a software tool capable of converting highly detailed 3D models from an open, standard format, VRML 2.0/97, into the proprietary DTS file format used by the Torque Game Engine from GarageGames. MAGIC is used to convert 3D simulations from authoritative sources into the data needed to run the simulations in NASA's Distributed Observer Network. The Distributed Observer Network (DON) is a simulation presentation tool built by NASA to facilitate the simulation sharing requirements of the Data Presentation and Visualization effort within the Constellation Program. DON is built on top of the Torque Game Engine (TGE) and has chosen TGE's Dynamix Three Space (DTS) file format to represent 3D objects within simulations.

  20. Magic-angle turning with double acquisition.

    Science.gov (United States)

    Matsunaga, Tatsuya; Takegoshi, K

    2017-01-01

    The double-acquisition scheme for efficient data collection of hypercomplex data (the States method) of a two-dimensional experiment is adopted to magic-angle hopping (MAH) and magic-angle turning (MAT) experiments, which are powerful methods to measure the principal values of the chemical shift anisotropy (CSA) in a powder sample. It is shown that the double acquisition MAT (DAMAT) sequence realizes the S/N ratio comparable to or better than those of other variants of the MAH/MAT sequences. In addition, we show that DAMAT has preferable features that there are no spinning sidebands in the indirect dimension, and no spectral shearing is necessary. Copyright © 2016 Elsevier Inc. All rights reserved.

  1. On the magical supergravities in six dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Guenaydin, M., E-mail: murat@phys.psu.ed [Center for Fundamental Theory, Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA 16802 (United States); Samtleben, H., E-mail: henning.samtleben@ens-lyon.f [Universite de Lyon, Laboratoire de Physique, UMR 5672, CNRS, Ecole Normale Superieure de Lyon, F-69364 Lyon cedex 07 (France); Institut Universitaire de France (France); Sezgin, E., E-mail: sezgin@tamu.ed [George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, TX 77843-4242 (United States)

    2011-07-01

    Magical supergravities are a very special class of supergravity theories whose symmetries and matter content in various dimensions correspond to symmetries and underlying algebraic structures of the remarkable geometries of the Magic Square of Freudenthal, Rozenfeld and Tits. These symmetry groups include the exceptional groups and some of their special subgroups. In this paper, we study the general gaugings of these theories in six dimensions which lead to new couplings between vector and tensor fields. We show that in the absence of hypermultiplet couplings the gauge group is uniquely determined by a maximal set of commuting translations within the isometry group SO(n{sub T},1) of the tensor multiplet sector. Moreover, we find that in general the gauge algebra allows for central charges that may have nontrivial action on the hypermultiplet scalars. We determine the new minimal couplings, Yukawa couplings and the scalar potential.

  2. On the magical supergravities in six dimensions

    Science.gov (United States)

    Günaydin, M.; Samtleben, H.; Sezgin, E.

    2011-07-01

    Magical supergravities are a very special class of supergravity theories whose symmetries and matter content in various dimensions correspond to symmetries and underlying algebraic structures of the remarkable geometries of the Magic Square of Freudenthal, Rozenfeld and Tits. These symmetry groups include the exceptional groups and some of their special subgroups. In this paper, we study the general gaugings of these theories in six dimensions which lead to new couplings between vector and tensor fields. We show that in the absence of hypermultiplet couplings the gauge group is uniquely determined by a maximal set of commuting translations within the isometry group SO(n,1) of the tensor multiplet sector. Moreover, we find that in general the gauge algebra allows for central charges that may have nontrivial action on the hypermultiplet scalars. We determine the new minimal couplings, Yukawa couplings and the scalar potential.

  3. Distinguishing quantum channels via magic squares game

    CERN Document Server

    Ramzan, M

    2010-01-01

    We study the effect of quantum memory in magic squares game when played in quantum domain. We consider different noisy quantum channels and analyze their influence on the magic squares quantum pseudo-telepathy game. We show that the probability of success can be used to distinguish the quantum channels. It is seen that the mean success probability decreases with increase of quantum noise. Where as the mean success probability increases with increase of quantum memory. It is also seen that the behaviour of amplitude damping and phase damping channels is similar. On the other hand, the behaviour of depolarizing channel is similar to the flipping channels. Therefore, the probability of success of the game can be used to distinguish the quantum channels.

  4. Social misdirection fails to enhance a magic illusion

    OpenAIRE

    Jie eCui; Jorge eOtero-Millan; Macknik, Stephen L.; Mac eKing; Susana eMartinez-Conde

    2011-01-01

    Visual, multisensory and cognitive illusions in magic performances provide new windows into the psychological and neural principles of perception, attention, and cognition. We investigated a magic effect consisting of a coin “vanish” (i.e., the perceptual disappearance of a coin after a simulated toss from hand to hand). Previous research has shown that magicians can use joint attention cues such as their own gaze direction to strengthen the observers’ perception of magic. Here we presented n...

  5. Compact Magic-T using microstrip-slotline transitions

    Science.gov (United States)

    U-Yen, Kongpop (Inventor); Wollack, Edward J. (Inventor); Doiron, Terence (Inventor); Moseley, Samuel H. (Inventor)

    2010-01-01

    The design of a compact low-loss Magic-T is described. The planar Magic-T incorporates a compact microstrip-slotline tee junction and small microstrip-slotline transition area to reduce slotline radiation. The Magic-T produces broadband in-phase and out-of-phase power combiner/divider responses, has low in-band insertion loss, and small in-band phase and amplitude imbalance.

  6. Performance of the MAGIC telescopes under moonlight

    Science.gov (United States)

    Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.; Arcaro, C.; Babić, A.; Banerjee, B.; Bangale, P.; Barres de Almeida, U.; Barrio, J. A.; Becerra González, J.; Bednarek, W.; Bernardini, E.; Berti, A.; Bhattacharyya, W.; Biasuzzi, B.; Biland, A.; Blanch, O.; Bonnefoy, S.; Bonnoli, G.; Carosi, R.; Carosi, A.; Chatterjee, A.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; Cumani, P.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; de Oña Wilhelmi, E.; Di Pierro, F.; Doert, M.; Domínguez, A.; Dominis Prester, D.; Dorner, D.; Doro, M.; Einecke, S.; Eisenacher Glawion, D.; Elsaesser, D.; Engelkemeier, M.; Fallah Ramazani, V.; Fernández-Barral, A.; Fidalgo, D.; Fonseca, M. V.; Font, L.; Fruck, C.; Galindo, D.; García López, R. J.; Garczarczyk, M.; Gaug, M.; Giammaria, P.; Godinović, N.; Gora, D.; Griffiths, S.; Guberman, D.; Hadasch, D.; Hahn, A.; Hassan, T.; Hayashida, M.; Herrera, J.; Hose, J.; Hrupec, D.; Hughes, G.; Ishio, K.; Konno, Y.; Kubo, H.; Kushida, J.; Kuveždić, D.; Lelas, D.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; Maggio, C.; Majumdar, P.; Makariev, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Menzel, U.; Minev, M.; Mirzoyan, R.; Moralejo, A.; Moreno, V.; Moretti, E.; Neustroev, V.; Niedzwiecki, A.; Nievas Rosillo, M.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nogués, L.; Paiano, S.; Palacio, J.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Paredes-Fortuny, X.; Pedaletti, G.; Peresano, M.; Perri, L.; Persic, M.; Prada Moroni, P. G.; Prandini, E.; Puljak, I.; Garcia, J. R.; Reichardt, I.; Rhode, W.; Ribó, M.; Rico, J.; Rugliancich, A.; Saito, T.; Satalecka, K.; Schroeder, S.; Schweizer, T.; Sillanpää, A.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Stamerra, A.; Strzys, M.; Surić, T.; Takalo, L.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Tescaro, D.; Teshima, M.; Torres, D. F.; Torres-Albà, N.; Treves, A.; Vanzo, G.; Vazquez Acosta, M.; Vovk, I.; Ward, J. E.; Will, M.; Zarić, D.

    2017-09-01

    MAGIC, a system of two imaging atmospheric Cherenkov telescopes, achieves its best performance under dark conditions, i.e. in absence of moonlight or twilight. Since operating the telescopes only during dark time would severely limit the duty cycle, observations are also performed when the Moon is present in the sky. Here we develop a dedicated Moon-adapted analysis to characterize the performance of MAGIC under moonlight. We evaluate energy threshold, angular resolution and sensitivity of MAGIC under different background light levels, based on Crab Nebula observations and tuned Monte Carlo simulations. This study includes observations taken under non-standard hardware configurations, such as reducing the camera photomultiplier tubes gain by a factor ∼1.7 (reduced HV settings) with respect to standard settings (nominal HV) or using UV-pass filters to strongly reduce the amount of moonlight reaching the cameras of the telescopes. The Crab Nebula spectrum is correctly reconstructed in all the studied illumination levels, that reach up to 30 times brighter than under dark conditions. The main effect of moonlight is an increase in the analysis energy threshold and in the systematic uncertainties on the flux normalization. The sensitivity degradation is constrained to be below 10%, within 15-30% and between 60 and 80% for nominal HV, reduced HV and UV-pass filter observations, respectively. No worsening of the angular resolution was found. Thanks to observations during moonlight, the maximal duty cycle of MAGIC can be increased from ∼18%, under dark nights only, to up to ∼40% in total with only moderate performance degradation.

  7. An open letter to Magic Johnson.

    Science.gov (United States)

    Pazin, G J

    1992-01-01

    The last installment in this series dealt with post-test counseling of a person whose HIV test was negative. The plan was to provide counseling for an HIV-infected person in this installment. NBA basketball star Magic Johnson's surprise announcement on November 7, 1991, of his infection with HIV has provided an unexpected opportunity to counsel a well-known person through an "open letter."

  8. Paul Ehrlich: From magic bullets to chemotherapy

    Directory of Open Access Journals (Sweden)

    Juan Fernando Cediel

    2008-09-01

    Full Text Available Paul Ehrlich is one of the most notable figures in the world of science. Considered by many as the father of chemotherapy, he was awarded the Nobel Prize in Physiology and Medicine in 1908 for his contributions to immunology. This document outlines some of his most important findings, including those who led him to create his famous «magic bullets», precursors of current chemotherapeutic agents.

  9. Collaboration in the Magic Tree House

    Science.gov (United States)

    Berner, Jane; Minser, Sabrina; Presser, Helen Burkart

    2008-01-01

    The Magic Tree House series is a collection of books by Mary Pope Osborne, each built around a time and place of high interest to young children, with an underlying story that makes children want to read the next book in the series to find out what is going to happen. Here, the authors describe the development of a two-week reading program for…

  10. Collaboration in the Magic Tree House

    Science.gov (United States)

    Berner, Jane; Minser, Sabrina; Presser, Helen Burkart

    2008-01-01

    The Magic Tree House series is a collection of books by Mary Pope Osborne, each built around a time and place of high interest to young children, with an underlying story that makes children want to read the next book in the series to find out what is going to happen. Here, the authors describe the development of a two-week reading program for…

  11. Magical Music in Old Norse Literature

    Directory of Open Access Journals (Sweden)

    Britt-Mari Näsström

    1996-01-01

    Full Text Available No society ever existed without performing music, and most cultures display many variants of music. Music also played and still plays an important part in different religious rites. From the days of yore, music has been intimately connected with the cult, whether it is performed as epic or lyric expressions. The Old Norse society was no exception to this statement and early finds from as far back as the Bronze Age reveal that different instrument were used in daily life. The most conspicuous specimens from this time are the bronze lures, which probably are depicted on the rock-carvings. All these examples emphasise the character of music in Old Norse literature as connected with the magic aspect of religion, and particularly with divination. This does not mean that all music in the Viking Age was performed with a magic purpose, but what has survived in the sources is the conspicuous role of music as something that affected the human mind to the extent that it was experienced as a magic feeling, even able to reveal the future.

  12. The Development of Socialist Magic: Reflections on the Place of Power and Ideology in Magic Performance

    Directory of Open Access Journals (Sweden)

    Saville, Ian

    2013-10-01

    Full Text Available The author seeks to establish a historical context for his own performance practice, which combines radical left politics with magic tricks and ventriloquism. A survey of the iconography of magic performance from the time of Jean Eugene Robert-Houdin onwards reveals an ideological underpinning which reflects hierarchies of class, gender and race in society. However, the magician’s role is complex, as he (or less commonly she practises an art which is part of ‘low’ culture, despite its association with the rich and powerful. Moreover, the modern magician is associated with rationalism and scepticism, which sometimes puts the conjurer on the side of a progressive view of society. The author examines his own attempts to overcome this disjunction in his practice and explains why, for him, the combination of agitprop and magic performance can only be effective through the use of humour.

  13. The application of psychoanalytic principles to the study of "magic".

    Science.gov (United States)

    Rudan, Vlasta; Tripković, Mara; Vidas, Mercedes

    2003-06-01

    In this paper Freud's work on animism and magic is elaborated. Those two subjects are presented mainly in his work "Totem and Taboo" (1913). The true motives, which lead primitive man to practice magic are, according to Freud, human whishes and his immense belief in their power. Importance attached to wishes and to the will has been extended from them to all those psychical acts, which are subjected to will. A general overvaluation has thus come about of all mental processes. Things become less important than ideas of things. Relations, which hold between the ideas of things, are equally hold between the things. The principle of governing magic or the technique of animistic way of thinking is one of the 'omnipotence of thoughts'. The overvaluation of psychic acts could be brought into relation with narcissism and megalomania, a belief in the thaumaturgic force of words and a technique for dealing with the external world--'magic'--which appears to be a logical application of these grandiose premises. Recent psychoanalytic authors dealing with the problem of magic emphasize that magic survived culturally to the present days and even in adults who are otherwise intellectually and scientifically 'modern'. Their explanations for that derive from Ferenczi's and especially Róheim's work that pointed out that magic facilitates adaptive and realistically effective endeavors. Balter pointed out that magic employs ego functioning, and conversely ego functioning includes magic.

  14. The MAGIC meteoric smoke particle sampler

    Science.gov (United States)

    Hedin, Jonas; Giovane, Frank; Waldemarsson, Tomas; Gumbel, Jörg; Blum, Jürgen; Stroud, Rhonda M.; Marlin, Layne; Moser, John; Siskind, David E.; Jansson, Kjell; Saunders, Russell W.; Summers, Michael E.; Reissaus, Philipp; Stegman, Jacek; Plane, John M. C.; Horányi, Mihály

    2014-10-01

    Between a few tons to several hundred tons of meteoric material enters the Earth's atmosphere each day, and most of this material is ablated and vaporized in the 70-120 km altitude region. The subsequent chemical conversion, re-condensation and coagulation of this evaporated material are thought to form nanometre sized meteoric smoke particles (MSPs). These smoke particles are then subject to further coagulation, sedimentation and global transport by the mesospheric circulation. MSPs have been proposed as a key player in the formation and evolution of ice particle layers around the mesopause region, i.e. noctilucent clouds (NLC) and polar mesosphere summer echoes (PMSE). MSPs have also been implicated in mesospheric heterogeneous chemistry to influence the mesospheric odd oxygen/odd hydrogen (Ox/HOx) chemistry, to play an important role in the mesospheric charge balance, and to be a significant component of stratospheric aerosol and enhance the depletion of O3. Despite their apparent importance, little is known about the properties of MSPs and none of the hypotheses can be verified without direct evidence of the existence, altitude and size distribution, shape and elemental composition. The aim of the MAGIC project (Mesospheric Aerosol - Genesis, Interaction and Composition) was to develop an instrument and analysis techniques to sample for the first time MSPs in the mesosphere and return them to the ground for detailed analysis in the laboratory. MAGIC meteoric smoke particle samplers have been flown on several sounding rocket payloads between 2005 and 2011. Several of these flights concerned non-summer mesosphere conditions when pure MSP populations can be expected. Other flights concerned high latitude summer conditions when MSPs are expected to be contained in ice particles in the upper mesosphere. In this paper we present the MAGIC project and describe the MAGIC MSP sampler, the measurement procedure and laboratory analysis. We also present the attempts to

  15. 用代数方法探讨四阶幻方的解%Solution of four order magic square with algebraic method

    Institute of Scientific and Technical Information of China (English)

    杨俊平; 孟宪涛

    2014-01-01

    The paper begins to the Yang Hui fourth-order magic square and introduces two methods of constructing magic square of fourth-order, they are the Yang Hui method though exchanging the elements of magic and the constructing matrix with elements .By using the method of linear algebra to explore the solution of fourth-order magic squares and establishing a constraint equations of fourth-order magic square to obtain the equivalent constraints of equations though elementary transformation.The paper obtains the equivalence relation of four order by using these constraints and the properties of magic squares.Though the above equivalence relation,we made the forth-order magic squares to “line transformation”and “row transformation”and cited the examples to illustrate that how to use the known to get the basic magic square.Finally,the paper described the isomorphic concept of magic square and demonstrated the number of basic solution.As to a known magic square,the paper points that there are eight isomorphic magic squares which including the known magic square.%从杨辉四阶幻方入手,介绍了两种四阶幻方的构造方法,分别是通过对幻方进行元素互换的杨辉构造法和用元素构造矩阵的矩阵构造法。运用线性代数的方法探求四阶幻方的解,建立了四阶幻方的约束方程组,并通过初等变换得到了约束方程组等价的约束条件,利用这些约束条件并结合四阶幻方的性质得到了关于四阶幻方的等价关系。通过这种等价关系,对四阶幻方进行“行变换”与“列变换”举出了由已知幻方生成基本幻方和怎样构造四阶幻方的例子。阐述了幻方同构的概念和幻方总数与基本解的个数,并且指出对于一个已知幻方,共存在8个与其同构的幻方,其中包括已知幻方。

  16. Effective atomic number, energy loss and radiation damage studies in some materials commonly used in nuclear applications for heavy charged particles such as H, C, Mg, Fe, Te, Pb and U

    Science.gov (United States)

    Kurudirek, Murat

    2016-05-01

    Commonly used nuclear physics materials such as water, concrete, Pb-glass, paraffin, freon and P 10 gases, some alloys such as brass, bronze, stainless-steel and some scintillators such as anthracene, stilbene and toluene have been investigated with respect to the heavy charged particle interaction as means of projected range and effective atomic number (Zeff) in the energy region 10 keV to 10 MeV. Calculations were performed for heavy ions such as H, C, Mg, Fe, Te, Pb and U. Also, the energy loss and radiation damage were studied using SRIM Monte Carlo code for anthracene for different heavy ions of 100 keV kinetic energy. It has been observed that the variation in Zeff becomes less when the atomic number of the ions increase. Glass-Pb, bronze, brass, stainless-steel and Freon gas were found to vary less than 10% in the energy region 10 keV to 10 MeV. For total proton interaction, discrepancies up to 10% and 18% between two databases namely PSTAR and SRIM were noted in mass stopping power and Zeff of water, respectively. The range calculations resulted with a conclusion that the metal alloys and glass-Pb have lowest values of ranges confirming best shielding against energetic heavy ions whereas freon and P 10 gases have the highest values of ranges in the entire energy region. The simulation results showed that the energy loss (%) to target electrons decreases as the Z of the incident ion increases. Also, it was observed that the radiation damage first increases with Z of the ion and then keeps almost constant for ions with Z≥52.

  17. How to be Brilliant at Numbers

    CERN Document Server

    Webber, Beryl

    2010-01-01

    How to be Brilliant at Numbers will help students to develop an understanding of numbers, place value, fractions and decimals. They will develop the language of number, and of the relationships between numbers. They will also use mathematics to solve problems and will develop mathematical reasoning. Using the worksheets in this book, pupils will learn about: ancient Greek numbers; coins; digits; consecutive numbers; magic ladders; fractions; matching pairs; multiples of 10; rounding; decimal un

  18. The Magical Classroom: Exploring Science, Language, and Perception with Children.

    Science.gov (United States)

    Strauss, Michael J.

    The science of magic is the subject of this book which also examines how to help children experience and describe the world, how to experiment and ask questions about it, and how to make decisions about what is true and what is not. Background information about the relationship between magic and science and the nature of effects and illusions are…

  19. Magic Fairy Tales as Source for Interface Metaphors

    CERN Document Server

    Averbukh, Vladimir L

    2008-01-01

    The work is devoted to a problem of search of metaphors for interactive systems and systems based on Virtual Reality (VR) environments. The analysis of magic fairy tales as a source of metaphors for interface and virtual reality is offered. Some results of design process based on magic metaphors are considered.

  20. Belief in Magic Predicts Children's Selective Trust in Informants

    Science.gov (United States)

    Kim, Sunae; Harris, Paul L.

    2014-01-01

    Children are able to distinguish between regular events that can occur in everyday reality and magical events that are ordinarily impossible. How do children respond to a person who brings about magical as compared with ordinary outcomes? In two studies, we tested children's acceptance of informants' claims when the informants had produced either…

  1. Better than magic: Cornelius Agrippa and Lazzarellian hermetism

    NARCIS (Netherlands)

    Hanegraaff, W.J.

    2009-01-01

    Hermetism's influence on early modern magic has frequently been challenged since the pioneering work of Frances Yates. This article argues that hermetic ideas did exert significant influence over early modern magical systems, particularly through the figure of Cornelius Agrippa. Rather than

  2. Progressive Propaganda Critics and the Magic Bullet Myth.

    Science.gov (United States)

    Sproule, J. Michael

    1989-01-01

    Examines the development and historical inaccuracies of the "magic bullet" interpretation of American propaganda studies, which asserts that propaganda critics between the world wars treated messages as "magic bullets" directly and powerfully infused into passive receivers. Considers why this misconception of the progressive…

  3. Magic Arts Counseling: The Tricks of Illusion as Intervention

    Science.gov (United States)

    Levin, David M.

    2006-01-01

    Magic arts counseling is defined as a nontraditional, experiential curriculum utilized for promoting student growth. Applicable research and the history of using magic with students provide the rationale for its employment in educational programming. In an effort to systematically explore its benefits several educational factors and key elements…

  4. The Belief in Magic in the Age of Science

    Directory of Open Access Journals (Sweden)

    Eugene Subbotsky

    2014-01-01

    Full Text Available The widely spread view on magical beliefs in modern industrial cultures contends that magical beliefs are a bunch of curious phenomena that persist today as an unnecessary addition to a much more important set of rational beliefs. Contrary to this view, in this article, the view is presented, which suggests that the belief in magic is a fundamental property of the human mind. Individuals can consciously consider themselves to be completely rational people and deny that they believe in magic or God despite harboring a subconscious belief in the supernatural. Research also shows how engagement in magical thinking can enhance cognitive functioning, such as creative thinking, perception and memory. Moreover, this article suggests that certain forms of social compliance and obedience to authority historically evolved from magical practices of mind control and are still powered by the implicit belief in magic. Finally, the article outlines areas of life, such as education, religion, political influence, commerce, military and political terror, and entertainment, in which magical thinking and beliefs of modern people can find practical applications.

  5. "Magic" surface clustering of borazines driven by repulsive intermolecular forces.

    Science.gov (United States)

    Kervyn, Simon; Kalashnyk, Nataliya; Riello, Massimo; Moreton, Ben; Tasseroul, Jonathan; Wouters, Johan; Jones, Tim S; De Vita, Alessandro; Costantini, Giovanni; Bonifazi, Davide

    2013-07-15

    It's a kind of magic: Hydroxy pentaaryl borazine molecules self-assemble into small clusters (see structure) on Cu(111) surfaces, whereas with symmetric hexaaryl borazine molecules large islands are obtained. Simulations indicate that the observed "magic" cluster sizes result from long-range repulsive Coulomb forces arising from the deprotonation of the B-OH groups of the hydroxy pentaaryl borazine.

  6. Application of magic in healthcare: A scoping review.

    Science.gov (United States)

    Lam, Michael T; Lam, Helen R; Chawla, Lalit

    2017-02-01

    Scoping review. The art and science of magic traces back to ancient days. Physicians are often compared to magicians metaphorically. Nonetheless, there exist various genuine applications of magic in the healthcare setting. To explore and summarize the literature reporting the applications of magic tricks or any derived techniques in healthcare or clinical environments. A literature search was performed on ten databases: Medline, Embase, CINAHL, Cochrane Central, Cochrane Database of Systematic Reviews, PEDro, Scopus, the International Index to Performing Arts, General OneFile and Newstand, to identify references related to the application of magic in healthcare. Relevant studies were charted, categorized, and summarized. 29 relevant references were found, consisting of 20 peer-reviewed publications and nine popular literature articles. Five distinct applications of magic in the clinical setting were identified. The literature showed an overall lack of academic evidence. Crown Copyright © 2016. Published by Elsevier Ltd. All rights reserved.

  7. Can Magic Deception Be Detected at an Unconscious Level?

    Science.gov (United States)

    Kawakami, Naoaki; Miura, Emi

    2017-06-01

    Magicians present magic tricks that seem to defy the laws of nature, entertaining us by manipulating our attention, perception, and awareness. However, although we are unaware of these manipulations at the level of conscious experience, we may still be aware of them at an unconscious level. We examined whether people can detect a magic deception outside of conscious awareness using an indirect measure. In the present study, we used the Cups and Balls magic trick, which is the transposition of balls between two cups. Participants viewed a video of the magic performance and were required to indicate the position of the ball in a direct self-report measure and completed the Single Category Implicit Association Test as an indirect measure. The results showed that the indirect measure of trick detection had higher accuracy than the direct measure. Our results suggest that while humans cannot consciously detect the magic deception, they do have a sense of what occurred on an unconscious level.

  8. Measurement of Magic Wavelengths for the ^{40}Ca^{+} Clock Transition.

    Science.gov (United States)

    Liu, Pei-Liang; Huang, Yao; Bian, Wu; Shao, Hu; Guan, Hua; Tang, Yong-Bo; Li, Cheng-Bin; Mitroy, J; Gao, Ke-Lin

    2015-06-05

    We demonstrate experimentally the existence of magic wavelengths and determine the ratio of oscillator strengths for a single trapped ion. For the first time, two magic wavelengths near 396 nm for the ^{40}Ca^{+} clock transition are measured simultaneously with high precision. By tuning the applied laser to an intermediate wavelength between transitions 4s_{1/2}→4p_{1/2} and 4s_{1/2}→4p_{3/2}, the sensitivity of the clock transition Stark shift to the oscillator strengths is greatly enhanced. Furthermore, with the measured magic wavelengths, we determine the ratio of the oscillator strengths with a deviation of less than 0.5%. Our experimental method may be applied to measure magic wavelengths for other ion clock transitions. Promisingly, the measurement of these magic wavelengths paves the way to building all-optical trapped ion clocks.

  9. Technologies of stage magic: Simulation and dissimulation.

    Science.gov (United States)

    Smith, Wally

    2015-06-01

    The craft of stage magic is presented in this article as a site to study the interplay of people and technology. The focus is on conjuring in the 19th and early 20th centuries, a time when magicians eagerly appropriated new optical, mechanical and electrical technologies into their acts. Also at this time, a modern style of conjuring emerged, characterized by minimal apparatus and a natural manner of performance. Applying Lucy Suchman's perspective of human-machine reconfigurations, conjuring in this modern style is interpreted as an early form of simulation, coupled with techniques of dissimulation. Magicians simulated the presence of supernational agency for public audiences, while dissimulating the underlying methods and mechanisms. Dissimulation implies that the secret inner workings of apparatus were not simply concealed but were rendered absent. This, in turn, obscured the production of supernatural effects in the translation of agencies within an assembly of performers, assistants, apparatus, apparatus-builders, and so on. How this was achieved is investigated through an analysis of key instructional texts written by and for magicians working in the modern style. Techniques of dissimulation are identified in the design of apparatus for three stage illusions, and in the new naturalness of the performer's manner. To explore the significance of this picture of stage magic, and its reliance on techniques of dissimulation, a parallel is drawn between conjuring and recent performances of computerized life forms, especially those of social robotics. The paper concludes by considering what is revealed about the production of agency in stage magic's peculiar human-machine assemblies.

  10. Overview of galactic results obtained by MAGIC

    Energy Technology Data Exchange (ETDEWEB)

    Zanin, Roberta

    2013-06-15

    MAGIC is a system of two atmospheric Cherenkov telescopes which explores the very-high-energy sky, from some tens of GeV up to tens of TeV. Located in the Canary island of La Palma, MAGIC has the lowest energy threshold among the instruments of its kind, well suited to study the still poorly explored energy band below 100 GeV. Although the space-borne gamma-ray telescope Fermi/LAT is sensitive up to 300 GeV, gamma-ray rates drop fast with increasing energy, so γ-ray collection areas larger than 10{sup 4}m{sup 2}, as those provided by grounds-based instruments, are crucial above a few GeV. The combination of MAGIC and Fermi/LAT observations have provided the first astrophysical spectra sampled in the inverse Compton peak region, resulting in a complete coverage from MeV up to TeV energies, as well as the discovery of a pulsed emission in the very-high-energy band. This paper focuses on the latest results on Galactic sources obtained by MAGIC which are highlighted by the detection of the pulsed gamma-ray emission from the Crab pulsar up to 400 GeV. In addition, we will present the morphological study on the W51 complex which allowed to pinpoint the location of the majority of the emission around the interaction point between the supernova remnant W51C and the star forming region W51B, but also to find a possible contribution from the associated pulsar wind nebula. Other important scientific achievements involve the Crab Nebula with an unprecedented spectrum covering three decades in energy starting from 50 GeV and a morphological study of the unidentified source HESS J1857+026 which supports the pulsar wind nebula scenario. Finally we will report on the searches of very-high-energy signals from gamma-ray binaries, mainly LS I 303+ and HESS J0632+057.

  11. Observations of microquasars with the MAGIC telescope

    CERN Document Server

    Rico, J; Bordas, P; Bosch-Ramon, V; Cortina, J; Paredes, J M; Ribó, M; Torres, D F; Zanin, R

    2007-01-01

    We report on the results from the observations in very high energy band (VHE, E_gamma > 100GeV) of the black hole X-ray binary (BHXB) Cygnus X-1. The observations were performed with the MAGIC telescope, for a total of 40 hours during 26 nights, spanning the period between June and November 2006. We report on the results of the searches for steady and variable gamma-ray signals, including the first experimental evidence for an intense flare, of duration between 1.5 and 24 hours.

  12. Two-Centered Magical Charge Orbits

    CERN Document Server

    Andrianopoli, Laura; Ferrara, Sergio; Marrani, Alessio; Trigiante, Mario

    2011-01-01

    We determine the two-centered generic charge orbits of magical N = 2 and maximal N = 8 supergravity theories in four dimensions. These orbits are classified by seven U-duality invariant polynomials, which group together into four invariants under the horizontal symmetry group SL(2,R). These latter are expected to disentangle different physical properties of the two-centered black-hole system. The invariant with the lowest degree in charges is the symplectic product (Q1,Q2), known to control the mutual non-locality of the two centers.

  13. [Schizotypy: detachment or magical fusion].

    Science.gov (United States)

    Kállai, János; Simon, Mária; Hartung, István; Birkás, Béla; Herold, Róbert

    2017-01-01

    Nowadays, both in the clinical population, and in general communities, we tend to encounter an increasing number of personality disorder patients, whose social adjustment, partnerships and efficient life management is made difficult by the disorder. The ideas of borderline personality disorder patients, who fluctuate between farfetched expectations and fears of their selves being demolished, schizoid patients, who close their selves in their own alienating prison, avoidant patients, who try to escape difficulties, which would enhance their self-esteem, OCD patients, who build their own mythic superstitious world, and antisocial patients who tend to ignore and aggressively override others' interests are all important in the development of cultures with insecure identities. Taking into consideration the symptoms enlisted in the diagnostic system of DSM-5, it is the task of experts of cultural anthropology, psychology, psychopathology and cognitive neuroscience to explore the referring ways of personality development, relationships and of conflict management. Notwithstanding, avoiding the psychopathological terminology, rather pointing at population characteristics, we need to identify personal functionings of the general features of perception, cognition and world views, which in the long run, may modify personal developmental possibilities, individual approaches to information technology, and emotional, family or professional motivations. Based on the respective literature and clinical experience, below we intend to explore the different aspects of schizotypy, which contribute to the formation of schizoid personality disorder. We analyze the interrelations of avoiding relationships and empathy toward relationship building.

  14. A totally magic cordial labeling of one-point union of n copies of a graph

    Directory of Open Access Journals (Sweden)

    P. Jeyanthi

    2014-01-01

    Full Text Available A graph \\(G\\ is said to have a totally magic cordial (TMC labeling with constant \\(C\\ if there exists a mapping \\(f: V(G\\cup E(G\\rightarrow \\left\\{0,1\\right\\}\\ such that \\(f(a + f(b + f(ab \\equiv C(\\mbox{mod 2}\\ for all \\(ab\\in E(G\\ and \\(\\left|n_f(0-n_f(1\\right|\\leq1\\, where \\(n_f(i\\ \\((i = 0, 1\\ is the sum of the number of vertices and edges with label \\(i\\. In this paper, we establish the totally magic cordial labeling of one-point union of \\(n\\-copies of cycles, complete graphs and wheels.

  15. Enhanced clustering tendency of Cu-impurities with a number of oxygen vacancies in heavy carbon-loaded TiO2 - the bulk and surface morphologies

    Science.gov (United States)

    Zatsepin, D. A.; Boukhvalov, D. W.; Kurmaev, E. Z.; Zatsepin, A. F.; Kim, S. S.; Gavrilov, N. V.; Zhidkov, I. S.

    2017-09-01

    The over threshold carbon-loadings (∼50 at.%) of initial TiO2-hosts and posterior Cu-sensitization (∼7 at.%) was made using pulsed ion-implantation technique in sequential mode with 1 h vacuum-idle cycle between sequential stages of embedding. The final Cx-TiO2:Cu samples were qualified using XPS wide-scan elemental analysis, core-levels and valence band mappings. The results obtained were discussed on the theoretic background employing DFT-calculations. The combined XPS-and-DFT analysis allows to establish and prove the final formula of the synthesized samples as Cx-TiO2:[Cu+][Cu2+] for the bulk and Cx-TiO2:[Cu+][Cu0] for thin-films. It was demonstrated the in the mode of heavy carbon-loadings the remaining majority of neutral C-C bonds (sp3-type) is dominating and only a lack of embedded carbon is fabricating the O-Cdbnd O clusters. No valence base-band width altering was established after sequential carbon-copper modification of the atomic structure of initial TiO2-hosts except the dominating majority of Cu 3s states after Cu-sensitization. The crucial role of neutral carbon low-dimensional impurities as the precursors for the new phases growth was shown for Cu-sensitized Cx-TiO2 intermediate-state hosts.

  16. Grzegorz Rozenberg: A Magical Scientist and Brother

    Science.gov (United States)

    Salomaa, Arto

    This is a personal description of Grzegorz Rozenberg. There is something magical in the fact that one man, Grzegorz, has been able to obtain so many and such good results in so numerous and diverse areas of science. This is why I have called him a “magical scientist.” He is also a very interdisciplinary scientist. In some sense this is due to his educational background. His first degree was in electronics engineering, the second a master’s in computer science, and the third a Ph.D. in mathematics. However, in the case of Grzegorz, the main drive for new disciplines comes from his tireless search for new challenges in basic science, rather than following known tracks. Starting with fundamental automata and language theory, he soon extended his realm to biologically motivated developmental languages, and further to concurrency, Petri nets, and graph grammars. During the past decade, his main focus has been on natural computing, a term coined by Grzegorz himself to mean either computing taking place in nature or human-designed computing inspired by nature.

  17. Fetish: Magic Figures in Central Africa

    Directory of Open Access Journals (Sweden)

    John Mack

    2011-12-01

    Full Text Available Originally published in Anthony Skelton (ed., Fetishism: Visualising Power and Desire, London: The South Bank Centre in collaboration with Lund Humphries Publishers, 1995. This article was originally published as a catalogue essay accompanying an exhibition exploring the idea of ‘fetishism’ in western art and thought. It discusses a well-known African example, the nkisi and related objects of the Kongo peoples of west central Africa and examines its uses and significance. Expectations based on their encrusted surfaces and nailed appearance – and on the apparent disjunction between indigenous belief and practice and Christian mission – have led to the application of the term ‘fetish’; in reality their purposes move well beyond those of vague magical application. Their appearance is compared with that of the shiny, well-patinated dynastic sculpture of the Kuba further into the equatorial forests. If one is conventionally regarded as about magical agency the other is discussed as an adjunct to royal legitimacy. Yet their divergent appearances are, it is suggested, a product of a convergent idea that for an object to have an active role in human affairs it needs to be activated.

  18. Magic in the machine: a computational magician's assistant

    Science.gov (United States)

    Williams, Howard; McOwan, Peter W.

    2014-01-01

    A human magician blends science, psychology, and performance to create a magical effect. In this paper we explore what can be achieved when that human intelligence is replaced or assisted by machine intelligence. Magical effects are all in some form based on hidden mathematical, scientific, or psychological principles; often the parameters controlling these underpinning techniques are hard for a magician to blend to maximize the magical effect required. The complexity is often caused by interacting and often conflicting physical and psychological constraints that need to be optimally balanced. Normally this tuning is done by trial and error, combined with human intuitions. Here we focus on applying Artificial Intelligence methods to the creation and optimization of magic tricks exploiting mathematical principles. We use experimentally derived data about particular perceptual and cognitive features, combined with a model of the underlying mathematical process to provide a psychologically valid metric to allow optimization of magical impact. In the paper we introduce our optimization methodology and describe how it can be flexibly applied to a range of different types of mathematics based tricks. We also provide two case studies as exemplars of the methodology at work: a magical jigsaw, and a mind reading card trick effect. We evaluate each trick created through testing in laboratory and public performances, and further demonstrate the real world efficacy of our approach for professional performers through sales of the tricks in a reputable magic shop in London. PMID:25452736

  19. MAGIC multiwavelength observations: policy, and some recent results

    CERN Document Server

    De Angelis, Alessandro

    2007-01-01

    MAGIC, 17 meters of diameter, is the world's largest single dish Imaging Atmospheric Cherenkov Telescope, and reaches in the analysis the lowest energy threshold (60 GeV) among the VHE gamma detectors. Completed in September 2004, MAGIC started full operation with its first cycle of data taking in February 2005. MAGIC observations in the galaxy cover, among others, supernova remnants, the Galactic Center and binary systems. The low threshold makes of MAGIC the IACT looking deepest in the Universe: the record of extragalactic sources detected includes Active Galactic Nuclei (AGN) at z > 0.2. Here we discuss the present performance of MAGIC and the policy for the use of MAGIC data in multiwavelength campaigns. After a review of some recent highlights from MW studies, including the discovery of the most distant source ever detected (the AGN 3C279 at z = 0.54), we present the expected performance of MAGIC after the inauguration of the second telescope, scheduled for September 21st, 2008. Multiwavelength studies a...

  20. Magic in the machine: a computational magician's assistant

    Directory of Open Access Journals (Sweden)

    Howard eWilliams

    2014-11-01

    Full Text Available A human magician blends science, psychology and performance to create a magical effect. In this paper we explore what can be achieved when that human intelligence is replaced or assisted by machine intelligence. Magical effects are all in some form based on hidden mathematical, scientific or psychological principles; often the parameters controlling these underpinning techniques are hard for a magician to blend to maximise the magical effect required. The complexity is often caused by interacting and often conflicting physical and psychological constraints that need to be optimally balanced. Normally this tuning is done by trial and error, combined with human intuitions. Here we focus on applying Artificial Intelligence methods to the creation and optimisation of magic tricks exploiting mathematical principles. We use experimentally derived data about particular perceptual and cognitive features, combined with a model of the underlying mathematical process to provide a psychologically valid metric to allow optimisation of magical impact. In the paper we introduce our optimisation methodology and describe how it can be flexibly applied to a range of different types of mathematics based tricks. We also provide two case studies as exemplars of the methodology at work: a magical jigsaw, and a mind reading card trick effect. We evaluate each trick created through testing in laboratory and public performances, and further demonstrate the real world efficacy of our approach for professional performers through sales of the tricks in a reputable magic shop in London.

  1. Magic in the machine: a computational magician's assistant.

    Science.gov (United States)

    Williams, Howard; McOwan, Peter W

    2014-01-01

    A human magician blends science, psychology, and performance to create a magical effect. In this paper we explore what can be achieved when that human intelligence is replaced or assisted by machine intelligence. Magical effects are all in some form based on hidden mathematical, scientific, or psychological principles; often the parameters controlling these underpinning techniques are hard for a magician to blend to maximize the magical effect required. The complexity is often caused by interacting and often conflicting physical and psychological constraints that need to be optimally balanced. Normally this tuning is done by trial and error, combined with human intuitions. Here we focus on applying Artificial Intelligence methods to the creation and optimization of magic tricks exploiting mathematical principles. We use experimentally derived data about particular perceptual and cognitive features, combined with a model of the underlying mathematical process to provide a psychologically valid metric to allow optimization of magical impact. In the paper we introduce our optimization methodology and describe how it can be flexibly applied to a range of different types of mathematics based tricks. We also provide two case studies as exemplars of the methodology at work: a magical jigsaw, and a mind reading card trick effect. We evaluate each trick created through testing in laboratory and public performances, and further demonstrate the real world efficacy of our approach for professional performers through sales of the tricks in a reputable magic shop in London.

  2. Magical Realism in Mary Gavell’s Short Story The Swing

    Institute of Scientific and Technical Information of China (English)

    LI Ya-li

    2016-01-01

    The Swing, written by Mary Gavell, relates the pain of an aging mother, who is comforted by her childhood son’s re-turning to the family swing at night. The story is mixed with magic and reality, filled with magic symbols and implied with magi-cal feminism themes. By employing magical realism, Mary Gavell portrays the loneliness of an elder woman and creates for her a magical world where she could freely express herself.

  3. "Doubly magic" conditions in magic-wavelength trapping of ultracold alkali-metal atoms.

    Science.gov (United States)

    Derevianko, Andrei

    2010-07-16

    In experiments with trapped atoms, atomic energy levels are shifted by the trapping optical and magnetic fields. Regardless of this strong perturbation, precision spectroscopy may be still carried out using specially crafted, "magic" trapping fields. Finding these conditions for particularly valuable microwave transitions in alkali-metal atoms has so far remained an open challenge. Here I demonstrate that the microwave transitions in alkali-metal atoms may be indeed made impervious to both trapping laser intensity and fluctuations of magnetic fields. I consider driving multiphoton transitions between the clock levels and show that these "doubly magic" conditions are realized at special values of trapping laser wavelengths and fixed values of relatively weak magnetic fields. This finding has implications for precision measurements and quantum information processing with qubits stored in hyperfine manifolds.

  4. The Royal Society and the decline of magic.

    Science.gov (United States)

    Hunter, Michael

    2011-06-20

    Whereas some have asserted that the early Royal Society actively sought to discredit magical beliefs, others have seen ideas of this kind as integral to the Society's 'nature' in its early years. This paper argues that, whatever the magical commitments of individual Fellows, the Society's corporate policy simply sidelined such pursuits. Yet, insofar as the result was that magic was excluded by default from the proper realm of scientific enquiry, this attitude was to prove paradoxically influential (although its roots have been retrospectively misconstrued to an extent that is significant in itself).

  5. Whole-genome analysis of multienvironment or multitrait QTL in MAGIC.

    Science.gov (United States)

    Verbyla, Arūnas P; Cavanagh, Colin R; Verbyla, Klara L

    2014-09-18

    Multiparent Advanced Generation Inter-Cross (MAGIC) populations are now being utilized to more accurately identify the underlying genetic basis of quantitative traits through quantitative trait loci (QTL) analyses and subsequent gene discovery. The expanded genetic diversity present in such populations and the amplified number of recombination events mean that QTL can be identified at a higher resolution. Most QTL analyses are conducted separately for each trait within a single environment. Separate analysis does not take advantage of the underlying correlation structure found in multienvironment or multitrait data. By using this information in a joint analysis-be it multienvironment or multitrait - it is possible to gain a greater understanding of genotype- or QTL-by-environment interactions or of pleiotropic effects across traits. Furthermore, this can result in improvements in accuracy for a range of traits or in a specific target environment and can influence selection decisions. Data derived from MAGIC populations allow for founder probabilities of all founder alleles to be calculated for each individual within the population. This presents an additional layer of complexity and information that can be utilized to identify QTL. A whole-genome approach is proposed for multienvironment and multitrait QTL analysis in MAGIC. The whole-genome approach simultaneously incorporates all founder probabilities at each marker for all individuals in the analysis, rather than using a genome scan. A dimension reduction technique is implemented, which allows for high-dimensional genetic data. For each QTL identified, sizes of effects for each founder allele, the percentage of genetic variance explained, and a score to reflect the strength of the QTL are found. The approach was demonstrated to perform well in a small simulation study and for two experiments, using a wheat MAGIC population. Copyright © 2014 Verbyla et al.

  6. Magic Sets for Disjunctive Datalog Programs

    CERN Document Server

    Alviano, Mario; Greco, Gianluigi; Leone, Nicola

    2012-01-01

    In this paper, a new technique for the optimization of (partially) bound queries over disjunctive Datalog programs with stratified negation is presented. The technique exploits the propagation of query bindings and extends the Magic Set (MS) optimization technique. An important feature of disjunctive Datalog is nonmonotonicity, which calls for nondeterministic implementations, such as backtracking search. A distinguishing characteristic of the new method is that the optimization can be exploited also during the nondeterministic phase. In particular, after some assumptions have been made during the computation, parts of the program may become irrelevant to a query under these assumptions. This allows for dynamic pruning of the search space. In contrast, the effect of the previously defined MS methods for disjunctive Datalog is limited to the deterministic portion of the process. In this way, the potential performance gain by using the proposed method can be exponential, as could be observed empirically. The co...

  7. MAGIC: Marine ARM GPCI Investigation of Clouds

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, ER; Wiscombe, WJ; Albrecht, BA; Bland, GL; Flagg, CN; Klein, SA; Kollias, P; Mace, G; Reynolds, RM; Schwartz, SE; Siebesma, AP; Teixeira, J; Wood, R; Zhang, M

    2012-10-03

    The second Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF2) will be deployed aboard the Horizon Lines cargo container ship merchant vessel (M/V) Spirit for MAGIC, the Marine ARM GPCI1 Investigation of Clouds. The Spirit will traverse the route between Los Angeles, California, and Honolulu, Hawaii, from October 2012 through September 2013 (except for a few months in the middle of this time period when the ship will be in dry dock). During this field campaign, AMF2 will observe and characterize the properties of clouds and precipitation, aerosols, and atmospheric radiation; standard meteorological and oceanographic variables; and atmospheric structure. There will also be two intensive observational periods (IOPs), one in January 2013 and one in July 2013, during which more detailed measurements of the atmospheric structure will be made.

  8. Atmospheric Monitoring for the MAGIC Telescopes

    CERN Document Server

    Gaug, M; Dorner, D; Doro, M; Font, Ll; Fruck, C; Garczarczyk, M; Garrido, D; Hrupec, D; Hose, J; López-Oramas, A; Maneva, G; Martinez, M; Mirzoyan, R; Temnikov, P; Zanin, R

    2014-01-01

    The monitoring of the atmosphere is very relevant for Imaging Atmospheric Cherenkov Telescopes. Adverse weather conditions (strong wind, high humidity, etc.) may damage the telescopes and must therefore be monitored continuously to guarantee a safe operation, and the presence of clouds and aerosols affects the transmission of the Cherenkov light and consequently the performance of the telescopes. The ATmospheric CAlibration (ATCA) technical working group of the MAGIC collaboration aims to cover all aspects related to atmosphere monitoring and calibration. In this paper we give an overview of the ATCA goals and activities, which include the set-up and maintenance of appropriate instrumentation, proper analysis of its data, the realization of MC studies, and the correction of real data taken under non-optimal atmospheric conditions. The final goal is to reduce the systematic uncertainties in the determination of the $\\gamma$-ray flux and energy, and to increase the duty cycle of the telescopes by establishing o...

  9. Accelerating electromagnetic magic field from the C-metric

    CERN Document Server

    Bicak, Jiri; 10.1007/s10714-009-0816-8

    2009-01-01

    Various aspects of the C-metric representing two rotating charged black holes accelerated in opposite directions are summarized and its limits are considered. A particular attention is paid to the special-relativistic limit in which the electromagnetic field becomes the "magic field" of two oppositely accelerated rotating charged relativistic discs. When the acceleration vanishes the usual electromagnetic magic field of the Kerr-Newman black hole with gravitational constant set to zero arises. Properties of the accelerated discs and the fields produced are studied and illustrated graphically. The charges at the rim of the accelerated discs move along spiral trajectories with the speed of light. If the magic field has some deeper connection with the field of the Dirac electron, as is sometimes conjectured because of the same gyromagnetic ratio, the "accelerating magic field" represents the electromagnetic field of a uniformly accelerated spinning electron. It generalizes the classical Born's solution for two u...

  10. Clinical toxicology of ‘magic mushroom’ ingestion

    Science.gov (United States)

    Peden, N. R.; Macaulay, K. E. C.; Bissett, Ann F.; Crooks, J.; Pelosi, A. J.

    1981-01-01

    The clinical features are reported in 27 cases of ‘magic mushroom’ ingestion. Mydriasis and hyperreflexia were common as were disorders of perception and affect. Psilocybe semilanceata appears to have been the species of fungus involved. PMID:7199140

  11. Quaternionic Kahler Manifolds, Constrained Instantons and the Magic Square: I

    CERN Document Server

    Dasgupta, Keshav; Wissanji, Alisha

    2007-01-01

    The classification of homogeneous quaternionic manifolds has been done by Alekseevskii, Wolf et al using transitive solvable group of isometries. These manifolds are not generically symmetric, but there is a subset of quaternionic manifolds that are symmetric and Einstein. A further subset of these manifolds are the magic square manifolds. We show that all the symmetric quaternionic manifolds including the magic square can be succinctly classified by constrained instantons. These instantons are mostly semilocal, and their constructions for the magic square can be done from the corresponding Seiberg-Witten curves for certain N = 2 gauge theories that are in general not asymptotically free. Using these, we give possible constructions, such as the classical moduli space metrics, of constrained instantons with exceptional global symmetries. We also discuss the possibility of realising the Kahler manifolds in the magic square using other solitonic configurations in the theory, and point out an interesting new sequ...

  12. Approaches to juxta-pleural nodule detection in CT images within the MAGIC-5 Collaboration

    Energy Technology Data Exchange (ETDEWEB)

    De Nunzio, G., E-mail: giorgio.denunzio@unisalento.it [University of Salento, Materials Science Department and Istituto Nazionale di Fisica Nucleare (INFN), Lecce (Italy); Massafra, A. [University of Salento, Physics Department and Istituto Nazionale di Fisica Nucleare (INFN), Lecce (Italy); Cataldo, R. [University of Salento, Materials Science Department and Istituto Nazionale di Fisica Nucleare (INFN), Lecce (Italy); De Mitri, I.; Peccarisi, M. [University of Salento, Physics Department and Istituto Nazionale di Fisica Nucleare (INFN), Lecce (Italy); Fantacci, M.E. [University of Pisa, Physics Department and Istituto Nazionale di Fisica Nucleare (INFN), Pisa (Italy); Gargano, G. [University of Bari, Physics Department and Istituto Nazionale di Fisica Nucleare (INFN), Bari (Italy); Lopez Torres, E. [CEADEN, Havana (Cuba)

    2011-08-21

    This work is a part of the MAGIC-5 (Medical Applications on a Grid Infrastructure Connection) experiment of the Italian INFN (Istituto Nazionale di Fisica Nucleare). A simple CAD (Computer-Assisted Detection) system for juxta-pleural lung nodules in CT images is presented, with the purpose of comparing different 2D concavity-patching techniques and assessing the respective efficiency in locating nodules. After a short introduction on the motivation, and a review of some CAD systems for lung nodules already published by the MAGIC-5 Collaboration, the paper describes the main lines of this particular approach, giving preliminary results and comments. In our procedure, candidate nodules are identified by patching lung border concavities in a hierarchical multiscale framework. Once located, they are fed to an artificial neural network for false positive reduction. The system has a modular structure that easily allows the insertion of arbitrary border-smoothing functions for concavity detection and nodule searching. In this paper the {alpha}-hull and morphological closing are compared, proving the higher sensitivity of the former, which also appears computationally less heavy.

  13. Approaches to juxta-pleural nodule detection in CT images within the MAGIC-5 Collaboration

    Science.gov (United States)

    de Nunzio, G.; Massafra, A.; Cataldo, R.; de Mitri, I.; Peccarisi, M.; Fantacci, M. E.; Gargano, G.; Lopez Torres, E.

    2011-08-01

    This work is a part of the MAGIC-5 (Medical Applications on a Grid Infrastructure Connection) experiment of the Italian INFN (Istituto Nazionale di Fisica Nucleare). A simple CAD (Computer-Assisted Detection) system for juxta-pleural lung nodules in CT images is presented, with the purpose of comparing different 2D concavity-patching techniques and assessing the respective efficiency in locating nodules. After a short introduction on the motivation, and a review of some CAD systems for lung nodules already published by the MAGIC-5 Collaboration, the paper describes the main lines of this particular approach, giving preliminary results and comments. In our procedure, candidate nodules are identified by patching lung border concavities in a hierarchical multiscale framework. Once located, they are fed to an artificial neural network for false positive reduction. The system has a modular structure that easily allows the insertion of arbitrary border-smoothing functions for concavity detection and nodule searching. In this paper the α-hull and morphological closing are compared, proving the higher sensitivity of the former, which also appears computationally less heavy.

  14. Unfolding of differential energy spectra in the MAGIC experiment

    CERN Document Server

    Albert, J; Anderhub, H; Antoranz, P; Armada, A; Asensio, M; Baixeras, C; Barrio, J A; Bartko, H; Bastieri, D; Becker, J; Bednarek, W; Berger, K; Bigongiari, C; Biland, A; Böck, R K; Bordas, P; Bosch-Ramon, V; Bretz, T; Britvitch, I; Camara, M; Carmona, E; Chilingarian, A; Ciprini, S; Coarasa, J A; Commichau, S; Contreras, J L; Cortina, J; Costado, M T; Curtef, V; Danielyan, V; Dazzi, F; De Angelis, A; Delgado, C; De los Reyes, R; De Lotto, B; Domingo-Santamaria, E; Dorner, D; Doro, M; Errando, M; Fagiolini, M; Ferenc, D; Fernández, E; Firpo, R; Flix, J; Fonseca, M V; Font, L; Fuchs, M; Galante, N; Garcia-Lopez, R J; Garczarczyk, M; Gaug, M; Giller, M; Göbel, F; Hakobyan, D; Hayashida, M; Hengstebeck, T; Herrero, A; Höhne, D; Hose, J; Hsu, C C; Jacon, P; Jogler, T; Kosyra, R; Kranich, D; Kritzer, R; Laille, A; Lindfors, E; Lombardi, S; Longo, F; López, J; López, M; Lorenz, E; Majumdar, P; Maneva, G; Mannheim, K; Mansutti, O; Mariotti, M; Martínez, M; Mazin, D; Merck, C; Meucci, M; Meyer, M; Miranda, J M; Mirzoyan, R; Mizobuchi, S; Moralejo, A; Nieto, D; Nilsson, K; Ninkovic, J; Ona-Wilhelmi, E; Otte, N; Oya, I; Panniello, M; Paoletti, R; Paredes, J M; Pasanen, M; Pascoli, D; Pauss, F; Pegna, R; Persic, M; Peruzzo, L; Piccioli, A; Puchades, N; Prandini, E; Raymers, A; Rhode, W; Ribó, M; Rico, J; Rissi, M; Robert, A; Rugamer, S; Saggion, A; Saitô, T; Sánchez, A; Sartori, P; Scalzotto, V; Scapin, V; Schmitt, R; Schweizer, T; Shayduk, M; Shinozaki, K; Shore, S N; Sidro, N; Sillanpää, A; Sobczynska, D; Stamerra, A; Stark, L S; Takalo, L; Temnikov, P; Tescaro, D; Teshima, M; Torres, D F; Turini, N; Vankov, H; Vitale, V; Wagner, R M; Wibig, T; Wittek, W; Zandanel, F; Zanin, R; Zapatero, J

    2007-01-01

    The paper describes the different methods, used in the MAGIC experiment, to unfold experimental energy distributions of cosmic ray particles (gamma-rays). Questions and problems related to the unfolding are discussed. Various procedures are proposed which can help to make the unfolding robust and reliable. The different methods and procedures are implemented in the MAGIC software and are used in most of the analyses.

  15. Review of fundamental physics results with the MAGIC telescopes

    Science.gov (United States)

    Rico, Javier

    2017-01-01

    The MAGIC Cherenkov telescopes are powerful tools for the exploration of the Physics frontiers, addressing topics such as the nature of dark matter and its distribution in the Universe, or the search for quantum gravitational effects in photon propagation. Since the beginning of operations in 2004, MAGIC has studied these questions thanks to hundreds of hours of observations of different targets, and has produced several high-impact results. Those include, significantly, the most constraining limits to the WIMP annihilation cross-section for particle masses above few hundred GeV, from observations of dwarf spheroidal (dSph) satellite galaxies. More recently, we have completed a combined analysis of MAGIC and Fermi-LAT observations of dSphs, obtaining limits for dark matter particle masses between 10 GeV and 100 TeV - the widest mass range ever explored by a single gamma-ray analysis - and improving the previously published Fermi-LAT and MAGIC results by up to a factor of two at certain masses. In this talk, I present an overview of the status and results of MAGIC Fundamental Physics projects, including our latest results concerning searches for Lorentz Invariance violation (LIV), and dark matter searches. I will propose the use of the framework developed for the MAGIC/Fermi-LAT joint analysis for the combination of results from the current generation of gamma-ray and neutrino detectors.

  16. Framing Performance Magic: The Role of Contract, Discourse and Effect

    Directory of Open Access Journals (Sweden)

    Landman, Todd

    2013-10-01

    Full Text Available A wide continuum of genres in performance magic has developed since the Victorian period, including stage magic, street magic, close-up magic, comedy magic, mentalism, bizarre and mystery entertainment. Each of these genres frames its performance on a different contract between the performer and the audience, the discourse used during performance and the effect on the audience both in terms of its perception of what has transpired and the personal meaning attached to the effect. This article examines this interplay between contract, discourse and effect in theory and practice. The article constructs a typology of performance magic which is then explored through an examination of audience perception and feedback from a drama workshop and focus group conducted at the University of Huddersfield in October 2012. The group experienced three performances framed around the idea of the magician, the mentalist, and the mystic, and the ensuing discussion revealed a wide range of insights into these different framings of performance. The reactions and ensuing discussions involved different understandings of trust, plausibility, explanation, authority, and dynamic interaction.

  17. Magic and reality in the literature of the Cuban revolution

    Directory of Open Access Journals (Sweden)

    María Jesús Martín Sastre

    2013-12-01

    Full Text Available There is no innocent literature. Literature is made by love, by hate, by a woman, by an idea, by an injustice, by a hope, to praise or to criticize, but I think literature has never been isolated, pure, detached. [...] Literature cannot escape life and history (Manuel Cofiño Lopez, 1985: 9697. Cofiño Lopezs own literature is no exception. The clear contrast that he presents in The Last Woman and the upcoming battle between magic and reality, ignorance and culture, past and present has a purpose. The author raises the need to end with the old beliefs in order to progress.This inextricable link between magic and reality of the Revolution is present in several novels of the Cuban Revolution. It shows how the two interact, as well as how past and present intermingle. Moreover, we find that magic is present throughout, and is fully compatible with the Revolution. This does not make it erroneous to believe in the stories of Magic Realism. It is a mistake on the part of the revolution and those who write about it for attempting to deny people the magic of their superstitions and beliefs, since magic is not the enemy of progress. They are part of their lives and their culture, and are something that should be respected.

  18. Magic coins’ and ‘magic squares’: the discovery of astrological sigils in the Oldenburg Letters

    National Research Council Canada - National Science Library

    Anna Marie Roos

    2008-01-01

    .... I shall also demonstrate their change in status in the late seventeenth century from potent magical healing amulets tied to the mysteries of the heavens to objects kept in a cabinet for curiosos...

  19. The magic of the magic lantern (1660-1700) : on analogical demonstration and the visualization of the invisible

    OpenAIRE

    Vermeir, Koen

    2005-01-01

    Website: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=307142 Copyright: © 2005 British Society for the History of Science; International audience; The history of the magic lantern provides a privileged case study with which to explore the histories of projection, demonstration, illusion and the occult, and their different intersections. I focus on the role of the magic lantern in the work of the Jesuit Athanasius Kircher and the French Cartesian Abbé de Vallemont. ...

  20. The MAGIC Meteoric Smoke Particle Sampler - Description and Results

    Science.gov (United States)

    Hedin, J.

    2013-12-01

    Between a few to several hundred tons of meteoric material enters the Earth's atmosphere each day, and much of this material ablates in the 70 -130 km region of the atmosphere. Already in the early 1960's it was suggested that meteoroid ablation products could recondense and form solid nanometer-scale smoke particles in the altitude range of the mesosphere and lower thermosphere (MLT). These so-called meteoric smoke particles (MSPs) are then subject to further coagulation, sedimentation, and transport by the mesospheric meridional circulation which in turn determines the latitudinal and seasonal variation of the MSP distribution. MSPs have been suggested to be important for a variety of atmospheric phenomena: 1. they are the most likely candidate for the nuclei of mesospheric ice particles (NLC and PMSE); 2. they provide surface area on which heterogeneous chemical reactions take place and may influence, for example, the water vapor distribution and Ox/HOx chemistry in the mesosphere; 3. they act as ultimate sink in mesospheric metal chemistry by scavenging various gas-phase products of meteoric ablation; 4. they can significantly influence the ionospheric D-region charge balance by scavenging free electrons and positive ions; and 5. they may be involved in the formation of NAT particles in polar stratospheric clouds and the destruction of ozone. Given the above points, it is obvious that there is a large scientific interest in the properties and global distribution of MSPs. Basic information about MSP properties is today available from optical occultation measurements (AIM/SOFIE) and, more indirectly, from in-situ measurements of the charged particle population. In order to understand the role of meteoric smoke particles in the mesosphere and their impact on that environment their presence must be certified and their physical characterization (number density, size distribution, shape, composition etc.) determined. A way to obtain maximum information about particle

  1. Quantum stability and magic lengths of metal atom wires

    Science.gov (United States)

    Cui, Ping; Choi, Jin-Ho; Lan, Haiping; Cho, Jun-Hyung; Niu, Qian; Yang, Jinlong; Zhang, Zhenyu

    2016-06-01

    Metal atom wires represent an important class of nanomaterials in the development of future electronic devices and other functional applications. Using first-principles calculations within density functional theory, we carry out a systematic study of the quantum stability of freestanding atom wires consisting of prototypical metal elements with s -, s p -, and s d -valence electrons. We explore how the quantum mechanically confined motion and local bonding of the valence electrons in these different wire systems can dictate their overall structural stability and find that the formation energy of essentially all the wires oscillates with respect to their length measured by the number n of atoms contained in the wires, establishing the existence of highly preferred (or magic) lengths. Furthermore, different wire classes exhibit distinctively different oscillatory characteristics and quantum stabilities. Alkali metal wires possessing an unpaired s valence electron per atom exhibit simple damped even-odd oscillations. In contrast, Al and Ga wires containing three s2p1 valence electrons per atom generally display much larger and undamped even-odd energy oscillations due to stronger local bonding of the p orbitals. Among the noble metals, the s -dominant Ag wires behave similarly to the linear alkali metal wires, while Au and Pt wires distinctly prefer to be structurally zigzagged due to strong relativistic effects. These findings are discussed in connection with existing experiments and should also be instrumental in future experimental realization of different metal atom wires in freestanding or supported environments with desirable functionalities.

  2. Digital Doping in Magic-Sized CdSe Clusters.

    Science.gov (United States)

    Muckel, Franziska; Yang, Jiwoong; Lorenz, Severin; Baek, Woonhyuk; Chang, Hogeun; Hyeon, Taeghwan; Bacher, Gerd; Fainblat, Rachel

    2016-07-26

    Magic-sized semiconductor clusters represent an exciting class of materials located at the boundary between quantum dots and molecules. It is expected that replacing single atoms of the host crystal with individual dopants in a one-by-one fashion can lead to unique modifications of the material properties. Here, we demonstrate the dependence of the magneto-optical response of (CdSe)13 clusters on the discrete number of Mn(2+) ion dopants. Using time-of-flight mass spectrometry, we are able to distinguish undoped, monodoped, and bidoped cluster species, allowing for an extraction of the relative amount of each species for a specific average doping concentration. A giant magneto-optical response is observed up to room temperature with clear evidence that exclusively monodoped clusters are magneto-optically active, whereas the Mn(2+) ions in bidoped clusters couple antiferromagnetically and are magneto-optically passive. Mn(2+)-doped clusters therefore represent a system where magneto-optical functionality is caused by solitary dopants, which might be beneficial for future solotronic applications.

  3. Magic - Marine Arm Gpci Investigation of Clouds

    Science.gov (United States)

    Lewis, E. R.; Wiscombe, W. J.; Albrecht, B. A.; Bland, G.; Flagg, C. N.; Klein, S. A.; Kollias, P.; Mace, G. G.; Reynolds, M.; Schwartz, S. E.; Siebesma, P.; Teixeira, J.; Wood, R.; Zhang, M.

    2012-12-01

    MAGIC, the Marine ARM (Atmospheric Radiation Measurement program) GPCI Investigation of Clouds, will deploy the Second ARM Mobile Facility (AMF2) aboard the Horizon Lines cargo container ship M/V Spirit traversing the route between Los Angeles, CA and Honolulu, HI from October, 2012 through September, 2013 (except from a few months in the middle of this time period when the ship will be in dry dock). During this time AMF2 will observe and characterize the properties of clouds and precipitation, aerosols, and atmospheric radiation; standard meteorological and oceanographic variables; and atmospheric structure. There will also be Intensive Observational Periods (IOPs), one in January, 2013 and one in July, 2013 during which more detailed measurements of the atmospheric structure will be made. Clouds remain a major source of uncertainty in climate projections. In this context, subtropical marine boundary layer (MBL) clouds play a key role in cloud-climate feedbacks that are not well understood yet play a large role in biases both in seasonal coupled model forecasts and annual mean climate forecasts. In particular, current climate models do not accurately represent the transition from the stratocumulus (Sc) regime, with its high albedo and large impact on the global radiative balance of Earth, to shallow trade-wind cumulus (Cu), which play a fundamental role in global surface evaporation and also albedo. Climate models do not yet adequately parameterize the small-scale physical processes associated with turbulence, convection, and radiation in these clouds. Part of this inability results from lack of accurate data on these clouds and the conditions responsible for their properties, including aerosol properties, radiation, and atmospheric and oceanographic conditions. The primary objectives of MAGIC are to improve the representation of the Sc-to-Cu transition in climate models by characterizing the essential properties of this transition, and to produce the observed

  4. Observations of BL Lacertae with MAGIC telescope

    Directory of Open Access Journals (Sweden)

    E. J. Lindfors

    2008-01-01

    Full Text Available BL Lacertae fue observado con el telescopio MAGIC de agosto a diciembre de 2005 (22.2 horas y de julio a septiembre de 2006 (26.0 horas. En 2005 se detectó, con un nivel de significación 5.1 σ, una fuerte emisión de rayos γ de muy alta energía (VHE. BL Lacertae es el primer objeto BL Lac con un pico de emisión a bajas frecuencias, en el cual se detecta este tipo de emisión. En los datos de 2006, no hay detección en la región de los rayos γ, lo que se atribuye a un menor nivel de flujo en este periodo. En este trabajo mostramos que también se observa una caida en el flujo óptico y milimétrico, lo cual sugiere una conexión entre estas tres bandas de emisión.

  5. Science by night – it's magic!

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    The control rooms of the LHC and its experiments threw open their doors to 150 youngsters on European Researchers Night and the place was buzzing with excitement all evening!    It's just possible that a few scientists' vocations were born last Friday night, as the sixth European Researchers Night took place across Europe. CERN was taking part for the first time and invited young people aged from 12 to 19 into the control rooms of the LHC machine and five experiments. From 5.00 in the afternoon until 1.00 in the morning, 150 youngsters and physics teachers got the opportunity to sit with scientists at the controls of the accelerator and experiments. This meeting of minds went down very well for all concerned, the scientists being only too happy to wax lyrical about their passion. The youngsters were thrilled with their visit and amazed at being allowed so close to the controls of these mighty machines. The night-time setting added an extra touch of magic to the whole event. Some just could...

  6. Magic angle spinning NMR of paramagnetic proteins.

    Science.gov (United States)

    Knight, Michael J; Felli, Isabella C; Pierattelli, Roberta; Emsley, Lyndon; Pintacuda, Guido

    2013-09-17

    Metal ions are ubiquitous in biochemical and cellular processes. Since many metal ions are paramagnetic due to the presence of unpaired electrons, paramagnetic molecules are an important class of targets for research in structural biology and related fields. Today, NMR spectroscopy plays a central role in the investigation of the structure and chemical properties of paramagnetic metalloproteins, linking the observed paramagnetic phenomena directly to electronic and molecular structure. A major step forward in the study of proteins by solid-state NMR came with the advent of ultrafast magic angle spinning (MAS) and the ability to use (1)H detection. Combined, these techniques have allowed investigators to observe nuclei that previously were invisible in highly paramagnetic metalloproteins. In addition, these techniques have enabled quantitative site-specific measurement of a variety of long-range paramagnetic effects. Instead of limiting solid-state NMR studies of biological systems, paramagnetism provides an information-rich phenomenon that can be exploited in these studies. This Account emphasizes state-of-the-art methods and applications of solid-state NMR in paramagnetic systems in biological chemistry. In particular, we discuss the use of ultrafast MAS and (1)H-detection in perdeuterated paramagnetic metalloproteins. Current methodology allows us to determine the structure and dynamics of metalloenzymes, and, as an example, we describe solid-state NMR studies of microcrystalline superoxide dismutase, a 32 kDa dimer. Data were acquired with remarkably short times, and these experiments required only a few milligrams of sample.

  7. ' HEAVY METALS

    African Journals Online (AJOL)

    exposed fish were about 3-5 times higher than the concentrations detected in control fish. ... The outcome effect 15 impairment of carbohydrate metabolism, which caused fish ..... of pesticides, heavy metal, detergent and petroleum.

  8. Performance of the MAGIC telescopes after the major upgrade

    CERN Document Server

    Sitarek, Julian; Colin, Pierre; Mazin, Daniel

    2015-01-01

    MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located on the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a major upgrade. The main subsystems upgraded were the MAGIC-I camera and its trigger system and the readout system of both telescopes. We use observations of the Crab Nebula taken at low and medium zenith angles to assess the key performance parameters of the MAGIC stereo system. For low zenith angle observations, the standard trigger threshold of the MAGIC telescopes is about 50 GeV. The integral sensitivity for point-like sources with Crab Nebula-like spectra above 220 GeV is (0.66 +/- 0.03)% of Crab Nebula flux in 50 h of observations. The angular resolution, defined as the sigma of a 2-dimensional Gaussian distribution, at energies of a few hundred GeV is below 0.07degree, while the energy resolution is around 16%. We investigate the effect of the systematic uncertainty on the data taken with the MAGIC telescopes after the upgrade. We estimate that th...

  9. 77 FR 74182 - Magic Valley Pipeline, L.P.; Notice of Petition for Rate Approval

    Science.gov (United States)

    2012-12-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Magic Valley Pipeline, L.P.; Notice of Petition for Rate Approval Take notice that on November 30, 2012, Magic Valley Pipeline, L.P. (Magic Valley) filed a petition for rate...

  10. 77 FR 70432 - Magic Valley Pipeline, L.P.; Notice of Filing

    Science.gov (United States)

    2012-11-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Magic Valley Pipeline, L.P.; Notice of Filing Take notice that on November 15, 2012, Magic Valley Pipeline, L.P. (Magic Valley) filed to revise its Statement of Operating...

  11. Magical Realism in Neil Gaiman’s Coraline

    Directory of Open Access Journals (Sweden)

    Hosseinpour Saeede

    2016-07-01

    Full Text Available Magical realism, as a narrative mode or genre in adults’ literature, has been in vogue since its revivifying with the publication of Gabriel Garcia Marquez’s One Hundred Years of Solitude (1967. However, the depiction of the genre in children’s and juvenile literature is a new trend; the presence of its elements have been traced and proved feasibly applicable in the interpretation of recent children’s fiction such as David Almond’s Skelling (1998. In this regard, the main concern of the present article is to sift the characteristic features of magical realism within Neil Gaiman’s Coraline (2002 through the application of Wendy B. Faris’s theoretical framework of the genre therewith Tzvetan Todorov’s definition of the fantastic in order to introduce the novel as an exemplar of magical realism in the domain of children’s literature.

  12. The Rhetorical Goddess: A Feminist Perspective on Women in Magic

    Directory of Open Access Journals (Sweden)

    Bruns, Laura C.

    2014-12-01

    Full Text Available Although female magicians have existed since the rise of entertainment magic, women have faced difficulty in entering the “fraternity” of the magic community. As an art form largely based around persuasion, it is useful to study the performance of magic as a text. It is additionally useful to study female magicians within this context of rhetoric. Not only will examining the rhetoric of female magicians provide insights on the rhetoric of women in this unique arena, but also of women in a historically gendered and underrepresented field. Research into this area may disclose other details regarding the communicative differences between women and men and how communication is adapted within a gendered communication paradigm.

  13. Magic Wavelength for the Hydrogen 1S-2S Transition

    Science.gov (United States)

    Kawasaki, Akio

    2016-05-01

    The state of the art precision measurement of the transition frequencies of neutral atoms is performed with atoms trapped by the magic wavelength optical lattice that cancels the ac Stark shift of the transitions. Trapping with magic wavelength lattice is also expected to improve the precision of the hydrogen 1S-2S transition frequency, which so far has been measured only with the atomic beam. In this talk, I discuss the magic wavelength for the hydrogen 1S-2S transition, and the possibility of implementing the optical lattice trapping for hydrogen. Optical trapping of hydrogen also opens the way to perform magnetic field free spectroscopy of antihydrogen for the test of CPT theorem.

  14. Compact Low-Loss Planar Magic-T

    Science.gov (United States)

    U-yen, Kongpop; Wollack, Edward J.; Doiron, Terence; Moseley, Sameul H.

    2008-01-01

    This design allows broadband power combining with high isolation between the H port and E port, and achieves a lower insertion loss than any other broadband planar magic-T. Passive micro wave/millimeter-wave signal power is combined both in-phase and out-of-phase at the ports, with the phase error being less than 1 , which is limited by port impedance. The in-phase signal combiner consists of two quarter-wavelength-long transmission lines combined at the microstrip line junction. The out-of-phase signal combiner consists of two half-wavelength-long transmission lines combined in series. Structural symmetry creates a virtual ground plane at the combining junction, and the combined signal is converted from microstrip line to slotline. Optimum realizable characteristic impedances are used so that the magic-T provides broadband response with low return loss. The magic-T is used in microwave and millimeter-wave frequencies, with the operating bandwidth being approximately 100 percent. The minimum isolation obtainable is 32 dB from port E to port H. The magic-T VSWR is less than 1.1 in the operating band. Operating temperature is mainly dependent on the variation in the dielectric constant of the substrate. Using crystallized substrate, the invention can operate in an extremely broad range of temperatures (from 0 to 400 K). It has a very high reliability because it has no moving parts and requires no maintenance, though it is desirable that the magic-T operate in a low-humidity environment. Fabrication of this design is very simple, using only two metallized layers. No bond wires, via holes, or air bridges are required. Additionally, this magic-T can operate as an individual component without auxiliary components.

  15. Attention and awareness in stage magic: turning tricks into research.

    Science.gov (United States)

    Macknik, Stephen L; King, Mac; Randi, James; Robbins, Apollo; Teller; Thompson, John; Martinez-Conde, Susana

    2008-11-01

    Just as vision scientists study visual art and illusions to elucidate the workings of the visual system, so too can cognitive scientists study cognitive illusions to elucidate the underpinnings of cognition. Magic shows are a manifestation of accomplished magic performers' deep intuition for and understanding of human attention and awareness. By studying magicians and their techniques, neuroscientists can learn powerful methods to manipulate attention and awareness in the laboratory. Such methods could be exploited to directly study the behavioural and neural basis of consciousness itself, for instance through the use of brain imaging and other neural recording techniques.

  16. Monte Carlo Simulation for the MAGIC-II System

    CERN Document Server

    Carmona, E; Moralejo, A; Vitale, V; Sobczynska, D; Haffke, M; Bigongiari, C; Otte, N; Cabras, G; De Maria, M; De Sabata, F

    2007-01-01

    Within the year 2007, MAGIC will be upgraded to a two telescope system at La Palma. Its main goal is to improve the sensitivity in the stereoscopic/coincident operational mode. At the same time it will lower the analysis threshold of the currently running single MAGIC telescope. Results from the Monte Carlo simulations of this system will be discussed. A comparison of the two telescope system with the performance of one single telescope will be shown in terms of sensitivity, angular resolution and energy resolution.

  17. Gesture Recognition for Educational Games: Magic Touch Math

    Science.gov (United States)

    Kye, Neo Wen; Mustapha, Aida; Azah Samsudin, Noor

    2017-08-01

    Children nowadays are having problem learning and understanding basic mathematical operations because they are not interested in studying or learning mathematics. This project proposes an educational game called Magic Touch Math that focuses on basic mathematical operations targeted to children between the age of three to five years old using gesture recognition to interact with the game. Magic Touch Math was developed in accordance to the Game Development Life Cycle (GDLC) methodology. The prototype developed has helped children to learn basic mathematical operations via intuitive gestures. It is hoped that the application is able to get the children motivated and interested in mathematics.

  18. Magical Realism in the Holocaust Literature of the Postwar Generations

    DEFF Research Database (Denmark)

    Ortner, Jessica

    2014-01-01

    This article investigates the use of magical realism in two Holocaust novels written by the contemporary Austrian writers Doron Rabinovici and Robert Schindel, who both are descendants of Holocaust survivors. I will argue that Rabinovici and Schindel not only use the narrative technique of magic...... realism in order to bear witness to the “reality of the events”, as experienced by their parents (Arva, 2011), but also in order to represent the “double reality” (Steinecke, 2005) of the “children of the holocaust” (Epstein,1979). Both Rabinovici’s novel The Search for M. (Suche nach M., 1991) and Robert...

  19. Quasi-Magic optical traps for Rydberg atoms

    CERN Document Server

    Zhang, S; Saffman, M

    2011-01-01

    We propose blue-detuned optical traps that are suitable for trapping of both ground state and Rydberg excited atoms. Addition of a background compensation field or suitable choice of the trap geometry provides a magic trapping condition for ground and Rydberg atoms at the trap center. Deviations from the magic condition at finite temperature are calculated. Designs that achieve less than 200 kHz differential trap shift between Cs ground and 125s Rydberg states for 10 {\\mu}K Cs atoms are presented. Consideration of the trapping potential and photoionization rates

  20. Elemental magic, v.2 the technique of special effects animation

    CERN Document Server

    Gilland, Joseph

    2012-01-01

    Design beautiful, professional-level animated effects with these detailed step-by-step tutorials from former Disney animator and animated effects expert Joseph Gilland. Filled with beautiful, full-color artwork, Elemental Magic, Volume II, breaks down the animated effect process from beginning to end-including booming explosions, gusting winds, magical incantations, and raging fires. He also breaks down the process of effects ""clean-up,"" as well as timing and frame rates. The companion website includes real-time footage of the author lecturing as he animates the drawings from the

  1. Magical Realism in the Holocaust Literature of the Postwar Generations

    DEFF Research Database (Denmark)

    Ortner, Jessica

    2014-01-01

    This article investigates the use of magical realism in two Holocaust novels written by the contemporary Austrian writers Doron Rabinovici and Robert Schindel, who both are descendants of Holocaust survivors. I will argue that Rabinovici and Schindel not only use the narrative technique of magic...... realism in order to bear witness to the “reality of the events”, as experienced by their parents (Arva, 2011), but also in order to represent the “double reality” (Steinecke, 2005) of the “children of the holocaust” (Epstein,1979). Both Rabinovici’s novel The Search for M. (Suche nach M., 1991) and Robert...

  2. 'Magic coins' and 'magic squares': the discovery of astrological sigils in the Oldenburg Letters.

    Science.gov (United States)

    Roos, Anna Marie

    2008-09-20

    Enclosed in a 1673 letter to Henry Oldenburg were two drawings of a series of astrological sigils, coins and amulets from the collection of Strasbourg mathematician Julius Reichelt (1637-1719). As portrayals of particular medieval and early modern sigils are relatively rare, this paper will analyse the role of these medals in medieval and early modern medicine, the logic behind their perceived efficacy, and their significance in early modern astrological and cabalistic practice. I shall also demonstrate their change in status in the late seventeenth century from potent magical healing amulets tied to the mysteries of the heavens to objects kept in a cabinet for curiosos. The evolving perception of the purpose of sigils mirrored changing early modem beliefs in the occult influences of the heavens upon the body and the natural world, as well as the growing interests among virtuosi in collecting, numismatics and antiquities.

  3. Unified framework for magic state distillation and multiqubit gate synthesis with reduced resource cost

    Science.gov (United States)

    Campbell, Earl T.; Howard, Mark

    2017-02-01

    The standard approach to fault-tolerant quantum computation is to store information in a quantum error correction code, such as the surface code, and process information using a strategy that can be summarized as distill then synthesize. In the distill step, one performs several rounds of distillation to create high-fidelity logical qubits in a magic state. Each such magic state provides one good T gate. In the synthesize step, one seeks the optimal decomposition of an algorithm into a sequence of many T gates interleaved with Clifford gates. This gate-synthesis problem is well understood for multiqubit gates that do not use any Hadamards. We present an in-depth analysis of a unified framework that realizes one round of distillation and multiqubit gate synthesis in a single step. We call these synthillation protocols, and show they lead to a large reduction in resource overheads. This is because synthillation can implement a general class of circuits using the same number of T states as gate synthesis, yet with the benefit of quadratic error suppression. This general class includes all circuits primarily dominated by control-control-Z gates, such as adders and modular exponentiation routines used in Shor's algorithm. Therefore, synthillation removes the need for a costly round of magic state distillation. We also present several additional results on the multiqubit gate-synthesis problem. We provide an efficient algorithm for synthesizing unitaries with the same worst-case resource scaling as optimal solutions. For the special case of synthesizing controlled unitaries, our techniques are not just efficient but exactly optimal. We observe that the gate-synthesis cost, measured by T count, is often strictly subadditive. Numerous explicit applications of our techniques are also presented.

  4. Superallowed Gamow-Teller decay of the doubly magic nucleus 100Sn.

    Science.gov (United States)

    Hinke, C B; Böhmer, M; Boutachkov, P; Faestermann, T; Geissel, H; Gerl, J; Gernhäuser, R; Górska, M; Gottardo, A; Grawe, H; Grębosz, J L; Krücken, R; Kurz, N; Liu, Z; Maier, L; Nowacki, F; Pietri, S; Podolyák, Zs; Sieja, K; Steiger, K; Straub, K; Weick, H; Wollersheim, H-J; Woods, P J; Al-Dahan, N; Alkhomashi, N; Ataç, A; Blazhev, A; Braun, N F; Čeliković, I T; Davinson, T; Dillmann, I; Domingo-Pardo, C; Doornenbal, P C; de France, G; Farrelly, G F; Farinon, F; Goel, N; Habermann, T C; Hoischen, R; Janik, R; Karny, M; Kaşkaş, A; Kojouharov, I M; Kröll, Th; Litvinov, Y; Myalski, S; Nebel, F; Nishimura, S; Nociforo, C; Nyberg, J; Parikh, A R; Procházka, A; Regan, P H; Rigollet, C; Schaffner, H; Scheidenberger, C; Schwertel, S; Söderström, P-A; Steer, S J; Stolz, A; Strmeň, P

    2012-06-20

    The shell structure of atomic nuclei is associated with 'magic numbers' and originates in the nearly independent motion of neutrons and protons in a mean potential generated by all nucleons. During β(+)-decay, a proton transforms into a neutron in a previously not fully occupied orbital, emitting a positron-neutrino pair with either parallel or antiparallel spins, in a Gamow-Teller or Fermi transition, respectively. The transition probability, or strength, of a Gamow-Teller transition depends sensitively on the underlying shell structure and is usually distributed among many states in the neighbouring nucleus. Here we report measurements of the half-life and decay energy for the decay of (100)Sn, the heaviest doubly magic nucleus with equal numbers of protons and neutrons. In the β-decay of (100)Sn, a large fraction of the strength is observable because of the large decay energy. We determine the largest Gamow-Teller strength so far measured in allowed nuclear β-decay, establishing the 'superallowed' nature of this Gamow-Teller transition. The large strength and the low-energy states in the daughter nucleus, (100)In, are well reproduced by modern, large-scale shell model calculations.

  5. The Magnetics Information Consortium (MagIC) Online Database: Uploading, Searching and Visualizing Paleomagnetic and Rock Magnetic Data

    Science.gov (United States)

    Minnett, R.; Koppers, A.; Tauxe, L.; Constable, C.; Pisarevsky, S. A.; Jackson, M.; Solheid, P.; Banerjee, S.; Johnson, C.

    2006-12-01

    remain available for download by the public (in both text and Excel format). Finally, the contents of these template files are automatically parsed into the online relational database, making the data available for online searches in the paleomagnetic and rock magnetic search nodes. The MagIC database contains all data transferred from the IAGA paleomagnetic poles database (GPMDB), the lava flow paleosecular variation database (PSVRL), lake sediment database (SECVR) and the PINT database. Additionally, a substantial number of data compiled under the Time Averaged Field Investigations project is now included plus a significant fraction of the data collected at SIO and the IRM. Ongoing additions of legacy data include over 40 papers from studies on the Hawaiian Islands and Mexico, data compilations from archeomagnetic studies and updates to the lake sediment dataset.

  6. Menorrhagia (Heavy Menstrual Bleeding)

    Science.gov (United States)

    Diseases and Conditions Menorrhagia (heavy menstrual bleeding) By Mayo Clinic Staff Menorrhagia is the medical term for menstrual periods with abnormally heavy or prolonged bleeding. Although heavy ...

  7. Ways of constructing optimal magic cube of order n when (n, 2·3·5·7)=1

    Institute of Scientific and Technical Information of China (English)

    陈小松

    2002-01-01

    An optimal magic cube of order n is a magic cube whose row sums, column sums and oblique sums of 9n layers are n(n3+1)/2. The author proved that optimal magic cubes of order n may be constructed as long as n and 2, 3, 5, 7 are relatively prime, and a formula for making optimal magic cubes by using optimal Latin squares and optimal magic squares was given.

  8. MAGIC contributions to the 32nd International Cosmic Ray Conference

    CERN Document Server

    Aleksić, J; Antonelli, L A; Antoranz, P; Asensio, M; Backes, M; Barrio, J A; Bastieri, D; González, J Becerra; Bednarek, W; Berdyugin, A; Berger, K; Bernardini, E; Biland, A; Blanch, O; Bock, R K; Boller, A; Bonnoli, G; Tridon, D Borla; Braun, I; Bretz, T; Cañellas, A; Carmona, E; Carosi, A; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Cossio, L; Covino, S; Dazzi, F; De Angelis, A; De Caneva, G; del Pozo, E De Cea; De Lotto, B; Mendez, C Delgado; Ortega, A Diago; Doert, M; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Eisenacher, D; Elsaesser, D; Ferenc, D; Fonseca, M V; Font, L; Fruck, C; López, R J García; Garczarczyk, M; Garrido, D; Giavitto, G; Godinović, N; Hadasch, D; Häfner, D; Herrero, A; Hildebrand, D; Höhne-Mönch, D; Hose, J; Hrupec, D; Jogler, T; Kellermann, H; Klepser, S; Krähenbühl, T; Krause, J; Kushida, J; La Barbera, A; Lelas, D; Leonardo, E; Lindfors, E; Lombardi, S; López, M; López-Oramas, A; Lorenz, E; Makariev, M; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Marcote, B; Mariotti, M; Martínez, M; Mazin, D; Meucci, M; Miranda, J M; Mirzoyan, R; Moldón, J; Moralejo, A; Munar-Adrover, P; Nieto, D; Nilsson, K; Orito, R; Otte, N; Oya, I; Paneque, D; Paoletti, R; Pardo, S; Paredes, J M; Partini, S; Perez-Torres, M A; Persic, M; Peruzzo, L; Pilia, M; Pochon, J; Prada, F; Moroni, P G Prada; Prandini, E; Gimenez, I Puerto; Puljak, I; Reichardt, I; Reinthal, R; Rhode, W; Ribó, M; Rico, J; Rissi, M; Rügamer, S; Saggion, A; Saito, K; Saito, T Y; Salvati, M; Satalecka, K; Scalzotto, V; Scapin, V; Schultz, C; Schweizer, T; Shayduk, M; Shore, S N; Sillanpää, A; Sitarek, J; Snidaric, I; Sobczynska, D; Spanier, F; Spiro, S; Stamatescu, V; Stamerra, A; Steinke, B; Storz, J; Strah, N; Surić, T; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzić, T; Tescaro, D; Teshima, M; Tibolla, O; Torres, D F; Treves, A; Uellenbeck, M; Vankov, H; Vogler, P; Wagner, R M; Weitzel, Q; Zabalza, V; Zandanel, F; Zanin, R

    2011-01-01

    Compilation of the papers contributed by the MAGIC collaboration to the 32nd International Cosmic Ray Conference, which took place between August 11 and 18, 2011 in Beijing, China. The papers are sorted in 6 categories: Overview and Highlight papers; Instrument, software and techniques; Galactic sources; Extragalactic sources; Multi-wavelength and joint campaigns; Fundamental physics, dark matter and cosmic rays.

  9. The role of magical thinking in forecasting the future

    NARCIS (Netherlands)

    Stavrova, O.; Meckel, Andrea

    2017-01-01

    This article explores the role of magical thinking in the subjective probabilities of future chance events. In five experiments, we show that individuals tend to predict a more lucky future (reflected in probability judgements of lucky and unfortunate chance events) for someone who happened to purch

  10. Magnetospheric ';magic' frequencies excited by subsolar magnetosheath jets

    Science.gov (United States)

    Archer, M. O.; Hartinger, M.; Horbury, T. S.

    2013-12-01

    Statistical and event studies have shown that magnetospheric ULF waves are often observed at persistent discrete Pc5 frequencies known as ';magic' frequencies [see Menk 2011 for a recent review]. While typically assumed to be global (cavity/waveguide) modes, another interpretation is that of magnetopause surface eigenmodes, which may be excited by localised pressure enhancements in the magnetosheath. To distinguish between these hypotheses, we identify transient jets in the magnetosheath (which occur about 2% of the time, predominantly downstream of the quasi-parallel shock) and statistically investigate the spectral response of the magnetospheric magnetic field at geostationary orbit. The broadband jets do indeed excite waves at the ';magic' frequencies, with both direct and resonant driving. We show that the expected fundamental frequencies of magnetopause surface eigenmodes have two preferential values over a wide range of upstream conditions, corresponding to fast and slow solar wind, and that their harmonics are in good agreement with the ';magic' frequencies. We also show that the waves are largely inconsistent with global (cavity/waveguide) modes outside the plasmasphere. Thus we conclude that the ';magic' frequencies are most likely due to magnetopause surface eigenmodes. Menk, F. W., Magnetospheric ULF waves: A review, in The dynamic magnetosphere, edited by W. Lui and M. Fujimoto, IAGA Special Sopron Book Series, pp. 223-256, Springer-Verlag Berlin, doi:10.1007/978-94-007-0501-2_13, 2011.

  11. The Magic of Universal Quantum Computing with Permutations

    Directory of Open Access Journals (Sweden)

    Michel Planat

    2017-01-01

    Full Text Available The role of permutation gates for universal quantum computing is investigated. The “magic” of computation is clarified in the permutation gates, their eigenstates, the Wootters discrete Wigner function, and state-dependent contextuality (following many contributions on this subject. A first classification of a few types of resulting magic states in low dimensions d≤9 is performed.

  12. Magic Wavelength for Hydrogen 1S-2S Transition

    CERN Document Server

    Kawasaki, Akio

    2015-01-01

    The magic wavelength for an optical lattice for hydrogen atoms that cancels the first order AC Stark shift of 1S-2S transition is calculated to be 513 nm. The amount of AC Stark shift $ \\Delta E = -1.19$ kHz/(10kW/cm$^2$) and the slope $d\\Delta E/d \

  13. Response to Tavin's "The Magical Quality of Aesthetics"

    Science.gov (United States)

    Carter, Mary C.

    2009-01-01

    In this commentary, I argue that Kevin Tavin's (2008) use of Lacan's "objet a" in his "Studies in Art Education" commentary "The Magical Quality of Aesthetics" is not a helpful analogy or solution for art education's search for the role of aesthetics. I offer that a pragmatist and dialogic viewpoint may be more useful and, because it describes the…

  14. Magic from Social Networks that Talk to Management: Four Cases

    Science.gov (United States)

    Sugarman, Barry

    2010-01-01

    Purpose: The purpose of this paper is to understand how social networks can help to produce the "magic" of extraordinary results for organizations. Design/methodology/approach: In this exploratory study four cases (from published reports) are compared in order to illustrate different management approaches to utilizing the power of networks.…

  15. Pre-School Children's Encounters with "The Magic Flute"

    Science.gov (United States)

    Nyland, Berenice; Acker, Aleksandra; Ferris, Jill; Deans, Jan

    2011-01-01

    This article describes a music programme in an Australian early learning centre. Through a repertoire of songs, games and instruments, the children were introduced to music forms, including opera. Mozart's Magic Flute was presented to these children by watching the Metropolitan Opera's latest film performance. Because this opera seized the…

  16. Pre-School Children's Encounters with "The Magic Flute"

    Science.gov (United States)

    Nyland, Berenice; Acker, Aleksandra; Ferris, Jill; Deans, Jan

    2011-01-01

    This article describes a music programme in an Australian early learning centre. Through a repertoire of songs, games and instruments, the children were introduced to music forms, including opera. Mozart's Magic Flute was presented to these children by watching the Metropolitan Opera's latest film performance. Because this opera seized the…

  17. Sleight of hand: magic, therapy and motor performance.

    Science.gov (United States)

    Harte, Daniel; Spencer, Kevin

    2014-01-01

    Finding creative therapeutic activities to help patients regain range of motion and strength in fun ways are keys aspects to many rehabilitation programs. These authors examine the use of magic tricks as a way to enhance a hand therapy program - Victoria Priganc, PhD, OTR, CHT, CLT, Practice Forum Editor. Copyright © 2014 Hanley & Belfus. All rights reserved.

  18. Martin Gardner: 100 Years of the Magic of Physics

    Science.gov (United States)

    Gillaspy, John D.

    2014-01-01

    2014 marks the 100th anniversary of the birth of Martin Gardner, a man whose writings helped inspire generations of young students to pursue a career in physics and mathematics. From his first to his last, and many in between, Gardner's publications often combined magic and science. A recurring theme was the clever use of physical principles…

  19. The MAGIC syndrome (mouth and genital ulcers with inflamed cartilage).

    Science.gov (United States)

    Orme, R L; Nordlund, J J; Barich, L; Brown, T

    1990-07-01

    We describe a 42-year-old man with features of both Behçet's disease and relapsing polychondritis. The term MAGIC syndrome (mouth and genital ulcers with inflamed cartilage) has previously been used to describe similarly affected patients. We discuss the diagnostic criteria and pathogenetic mechanisms.

  20. "Octagon Magic": Andre Norton and Revitalizing the Girls' Book.

    Science.gov (United States)

    Dressel, Janice Hartwick; Molson, Francis J.

    1996-01-01

    Argues that Andre Norton's "Octagon Magic" is neither a conventional girls' book, nor a witch tale, nor a time fantasy but rather a unique coming-of-age story best understood within the context of theorists such as Carol Gilligan, Mary Belenk, and Jean Baker Miller. (TB)

  1. Megan Terry's Plays for Youth at the Omaha Magic Theatre.

    Science.gov (United States)

    Klein, Jeanne

    Nebraska's Omaha Magic Theatre (OMT) and playwright Megan Terry are concerned with producing socially relevant, issue-oriented musical plays, focusing on young people and the adults who influence their emotional lives. OMT's "Theatre of Process" focuses upon the performing artist to develop and test ways to make theater more meaningful,…

  2. Marine ARM GPCI Investigation of Clouds (MAGIC) Field Campaign Report

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, Ernie R. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2016-12-01

    The Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign, which deployed the second ARM Mobile Facility (AMF2) aboard the Horizon Lines cargo container ship Spirit as it ran its regular route between Los Angeles, California and Honolulu, Hawaii, measured properties of clouds and precipitation, aerosols, radiation, and atmospheric, meteorological, and oceanic conditions with the goal of obtaining statistics of these properties to achieve better understanding of the transition between stratocumulus and cumulus cloud regimes that occur in that region. This Sc-Cu transition is poorly represented in models, and a major reason for this is the lack of high-quality and comprehensive data that can be used to constrain, validate, and improve model representation of the transition. MAGIC consisted of 20 round trips between Los Angeles and Honolulu, and thus over three dozen transects through the transition, totaling nearly 200 days at sea between September, 2012 and October, 2013. During this time MAGIC collected a unique and unprecedented data set, including more than 550 successful radiosonde launches. An Intensive Observational Period (IOP) occurred in July, 2013 during which more detailed measurements of the atmospheric structure were made. MAGIC was very successful in its operations and overcame numerous logistical and technological challenges, clearly demonstrating the feasibility of a marine AMF2 deployment and the ability to make accurate measurements of clouds and precipitation, aerosols, and radiation while at sea.

  3. Multicultourism in Mexico’s Magical Village Cuetzalan

    DEFF Research Database (Denmark)

    Jacobsen, Casper

    multiplied.To take the temperature of this political space, this thesis examines one expression of the surge of political multiculturalism; the tourism program Magical Villages (Pueblos Mágicos) launched in 2001 by Mexico's federal government. Through a focus on the participant town and mestizo municipal...

  4. Magic Universe - The Oxford Guide to Modern Science

    Science.gov (United States)

    Calder, Nigel

    2003-11-01

    As a prolific author, BBC commentator, and magazine editor, Nigel Calder has spent a lifetime spotting and explaining the big discoveries in all branches of science. In Magic Universe , he draws on his vast experience to offer readers a lively, far-reaching look at modern science in all its glory, shedding light on the latest ideas in physics, biology, chemistry, medicine, astronomy, and many other fields. What is truly magical about Magic Universe is Calder's incredible breadth. Migrating birds, light sensors in the human eye, black holes, antimatter, buckyballs and nanotubes--with exhilarating sweep, Calder can range from the strings of a piano to the superstrings of modern physics, from Pythagoras's theory of musical pitch to the most recent ideas about atoms and gravity and a ten-dimensional universe--all in one essay. The great virtue of this wide-ranging style--besides its liveliness and versatility--is that it allows Calder to illuminate how the modern sciences intermingle and cross-fertilize one another. Indeed, whether discussing astronauts or handedness or dinosaurs, Calder manages to tease out hidden connections between disparate fields of study. What is most wondrous about the "magic universe" is that one can begin with stellar dust and finish with life itself. Drawing on interviews with more than 200 researchers, from graduate students to Nobel prize-winners, Magic Universe takes us on a high-spirited tour through the halls of science, one that will enthrall everyone interested in science, whether a young researcher in a high-tech lab or an amateur buff sitting in the comfort of an armchair.

  5. Spherical and Superdeformed Structures Near Doubly-Magic Nuclei ^40Ca, ^56Ni, and ^100Sn

    Science.gov (United States)

    Baktash, Cyrus

    2000-11-01

    For more than thirty years, shell model calculations have predicted that multiparticle-multihole excitations across magic numbers 8, 20 and 28 would lead to very deformed and superdeformed states in the vicinity of doubly-magic nuclei ^16O, ^40Ca, and ^16Ni. These expectations were later confirmed in various cluster and mean field calculations that predicted the existence of new islands of superdeformation centered around ^32S and ^60Zn. However, it was only recently that advances in detector technology have allowed exploration of these weakly-populated structures. In this talk, I will present results of our recent experiments that have succeeded in identifying these long-sought states and their exotic decay modes. These data have provided a unique testing ground to confront, compare, and relate state-of-the-art calculations in the framework of microscopic (large-scale shell models, Quantum Monte Carlo Diagonalization), and mean field theories. Highlights of these results, including a discussion of the importance of neutron-proton pairing correlations in these nearly N=Z nuclei will be discussed. * Managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725.

  6. The Interrelationship of Religion and Magic in the Experience\tof Latvians in Timofeyevka, Siberia

    Directory of Open Access Journals (Sweden)

    Aigars Lielbardis

    2014-08-01

    Full Text Available Groups of texts about seasonal celebrations, family customs and charmers are examined in this article in order to reveal the interrelationship of magic and religion in Latvian traditional culture in Timofeyevka. The recollections and knowledge of informants, recorded in 2004 and 2006, during fieldwork in Timofeyevka, have been supplemented with examples published in the 19th and 20th centuries, as well as recently documented examples of Latvian folklore in Latvia. The entire year of seasonal celebrations, which have become closely associated with the Catholic calendar – Christmas, Epiphany, Easter, Pentecost, Midsummer, and the remembrance of the dead in the autumn – has been examined. Annual festivities celebrated in the Latvian community have merged with Slavic festivals, for example, Easter, Pentecost and Midsummer traditions. In the recollections of family customs descriptions of funeral customs dominate over christenings and weddings. Notions of the supernatural are revealed in the stories of personal experience about healing, as well as in belief legends, which tell about the unusual ability of a person to transform into an animal or object. The experiences of the Latvian community of Timofeyevka concerning religion (official religion and magic (unofficial religion cannot be differentiated, because they represent a unified conceptual system in which one adds to the other. The rich traditional cultural heritage in Timofeyevka has been preserved due to the location of the village far away from large cities and main roads, and also due to the Latvian community’s large population numbers in the past.

  7. Termination of persistent atrial fibrillation during pulmonary vein isolation: insight from the MAGIC-AF trial.

    Science.gov (United States)

    Singh, Sheldon M; d'Avila, Andre; Kim, Young-Hoon; Aryana, Arash; Mangrum, J Michael; Michaud, Gregory F; Dukkipati, Srinivas R; Barrett, Conor D; Heist, E Kevin; Parides, Michael K; Thorpe, Kevin E; Reddy, Vivek Y

    2016-10-04

    Controversy on the optimal ablation strategy for persistent atrial fibrillation (AF) exists with limited work evaluating a strategy of pulmonary vein isolation (PVI) alone when AF terminates during PVI. Thirty-five patients had AF termination during PVI in the Modified Ablation Guided by Ibutilide Use in Chronic Atrial Fibrillation (MAGIC-AF; ClinicalTrials.gov number: NCT01014741) study. The objective of the current study is to report the 1-year outcome after PVI alone in this unique patient group. The 1-year single procedure freedom from atrial arrhythmia off anti-arrhythmic drugs was reported for the 35 patients in the MAGIC-AF study with persistent AF termination during or upon completion of PVI.Freedom from recurrent atrial arrhythmia was achieved in 60% of patients where AF terminated during PVI. Cavotricuspid isthmus flutter was common when AF terminated to a macro re-entrant flutter during PVI, and responsible for 92% of all flutter circuits with AF termination. Persistent AF termination during PVI may identify a subgroup of patients who experience a similar long-term clinical outcome with PVI ablation alone when compared with other more extensive persistent AF ablation strategies. Pulmonary vein isolation alone may be an appropriate tactic in this subgroup of persistent AF patients. Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2016. For permissions please email: journals.permissions@oup.com.

  8. Critically evaluated theoretical energies, lifetimes, static and dynamic polarizabilities, and magic wavelengths in cesium

    Science.gov (United States)

    Safronova, Marianna; Safronova, U. I.; Clark, Charles W.

    2016-05-01

    Systematic study of Cs atomic properties is carried out using a high-precision relativistic all-order method. Excitation energies of the ns , np , nd , and nf (n electric-dipole transitions. Electric-dipole (6 s - np , n = 6-26) and electric-quadrupole (6 s - ndj , n = 5-26) matrix elements are calculated to obtain the ground state E1 and E2 static polarizabilities. Scalar polarizabilities of the ns , np ,and nd states, and tensor polarizabilities of the np3 / 2 and ndj excited states of Cs are evaluated. These calculations provide recommended values critically evaluated for their accuracy for a number of Cs atomic properties useful for a variety of applications. Using first-principles calculations, we identify magic wavelengths λ for the 6 s - 7p1 / 2 and 6 s - 7p3 / 2 transitions in Cs. The ns and npj atomic levels have the same ac Stark shifts at the corresponding magic wavelength, which facilitates state-insensitive optical cooling and trapping.

  9. Preparation and use of 131I magic gel as a dosimeter for targeted radionuclide therapy.

    Science.gov (United States)

    Courbon, Frédéric; Love, Peter; Chittenden, Sarah; Flux, Glen; Ravel, Patrice; Cook, Gary

    2006-10-01

    Clinical interest in targeted radiotherapy is increasing, but accurate dosimetry studies are difficult to achieve. The aim of this study was to investigate the preparation and use of a "normoxic" polymer gel (with a tissue-equivalent density), known as MAGIC gel, and magnetic resonance imaging (MRI) for nonsealed source dosimetry. MAGIC gel samples were mixed with deionized water (MAGIC95) or a solution of 131I (131I-MAGIC95). By measuring the radioinduced variations of R2 values (relaxivity) of irradiated gels, we analyzed the response of MAGIC95 and MAGIC samples to external photon beam or 131I irradiation (131I-MAGIC95). MRI showed that a homogeneous dose distribution from 131I can be achieved if the MAGIC gel, at a temperature of approximately 35 degrees C, is mixed in 131I solution and the resulting mixture shaken gently for 30 minutes. It is important that the vials are completely filled, as residual air reduces polymerization and causes spontaneous polymerization stripes. Responses of MAGIC95 or MAGIC gels to external photon beam irradiation are similar. The variations of R2 values for 131I-MAGIC95 gel depend on the absorbed dose and not on the duration of the irradiation being reproducible from one batch of gel to another. MAGIC gel responses to 131I or external beam irradiation (EBI) are different. Our preliminary results suggest that radiolabeled "normoxic" polymer can be easily and safely produced. Radiolabeled MAGIC gel may, therefore, be suitable for the creation of phantoms dedicated to nonsealed source dosimetry.

  10. Heavy hadrons in nuclear matter

    Science.gov (United States)

    Hosaka, Atsushi; Hyodo, Tetsuo; Sudoh, Kazutaka; Yamaguchi, Yasuhiro; Yasui, Shigehiro

    2017-09-01

    Current studies on heavy hadrons in nuclear medium are reviewed with a summary of the basic theoretical concepts of QCD, namely chiral symmetry, heavy quark spin symmetry, and the effective Lagrangian approach. The nuclear matter is an interesting place to study the properties of heavy hadrons from many different points of view. We emphasize the importance of the following topics: (i) charm/bottom hadron-nucleon interaction, (ii) structure of charm/bottom nuclei, and (iii) QCD vacuum properties and hadron modifications in nuclear medium. We pick up three different groups of heavy hadrons, quarkonia (J / ψ, ϒ), heavy-light mesons (D/ D ¯ , B ¯ / B) and heavy baryons (Λc, Λb). The modifications of those hadrons in nuclear matter provide us with important information to investigate the essential properties of heavy hadrons. We also give the discussions about the heavy hadrons, not only in infinite nuclear matter, but also in finite-size atomic nuclei with finite baryon numbers, to serve future experiments.

  11. Isoscalar giant monopole resonance for drip-line and super heavy nuclei in the framework of a relativistic mean field formalism with scaling calculation

    CERN Document Server

    Biswal, S K

    2014-01-01

    We study the isoscalar giant monopole resonance for drip-lines and super heavy nuclei in the frame work of a relativistic mean field theory with scaling approach. The well known extended Thomas-Fermi approximation in the non-linear $\\sigma$-$\\omega$ model is used to estimate the giant monopole excitation energy for some selected light spherical nuclei starting from the region of proton to neutron drip-lines. The application is extended to super heavy region for Z=114 and 120, which are predicted by several models as the next proton magic number beyond Z=82. We compared the excitation energy obtained by four successful force parameters NL1, NL3, NL3$^*$ and FSUGold. The monopole energy decreases toward the proton and neutron drip-lines in an isotopic chain for lighter mass nuclei contrary to a monotonous decrease for super heavy isotopes. The maximum and minimum monopole excitation energies are obtained for nuclei with minimum and maximum isospin, respectively in an isotopic chain.

  12. Search for Dark Matter signatures with MAGIC-I and prospects for MAGIC Phase-II

    CERN Document Server

    Lombardi, S; Barrio, J A; Biland, A; Doro, M; Elsaesser, D; Gaug, M; Mannheim, K; Mariotti, M; Martínez, M; Nieto, D; Persic, M; Prada, F; Rico, J; Rissi, M; Sanchez-Conde, M A; Stark, L S; Zandanel, F

    2009-01-01

    In many Dark Matter (DM) scenarios, the annihilation of DM particles can produce gamma rays with a continuum spectrum that extends up to very high energies of the order of the electroweak symmetry breaking scale (hundreds of GeV). Astrophysical structures supposed to be dynamically dominated by DM, such as dwarf Spheroidal Galaxies, Galaxy Clusters (the largest ones in the local Universe being mostly observable from the northern hemisphere) and Intermediate Mass Black Holes, can be considered as interesting targets to look for DM annihilation with Imaging Atmospheric Cherenkov Telescopes (IACTs). Instead, the center of our Galaxy seems to be strongly contaminated with astrophysical sources. The 17m Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC-I) Telescope, situated in the Canary island of La Palma (2200 m a.s.l.), is best suited for DM searches, due to its unique combination of high sensitivity and low energy threshold among current IACTs which can potentially allow to provide clues on the high energy...

  13. Epirubicin, oxaliplatin, and capectabine is just as "MAGIC"al as epirubicin, cisplatin, and fluorouracil perioperative chemotherapy for resectable locally advanced gastro-oesophageal cancer

    Directory of Open Access Journals (Sweden)

    Bhawna Sirohi

    2014-01-01

    Full Text Available Background: The perioperative use of epirubicin, cisplatin, and fluorouracil (ECF significantly improves outcomes in patients with gastric and gastro-oesophageal (GO cancers but is cumbersome to administer. Given the equivalence of epirubicin, oxaliplatin, and capectabine (EOX with ECF in advanced setting, we analyzed the compliance, efficacy, and toxicity of perioperative EOX in resectable but locally advanced cancers. Methods: This is a retrospective analysis of prospectively maintained database of patients treated between January 2012 and September 2013 at Tata Memorial Centre. Patients were planned to receive 3# of neoadjuvant (NA and 3# of adjuvant EOX (intravenous epirubicin 50 mg/m 2 D1, oxaliplatin 130 mg/m 2 , on D1, capecitabiine 1250 mg/m 2 D1-21 every 21 days. On completion of NA therapy, patients were planned to undergo gastrectomy and D2 lymphadenectomy. Results: A total of 99 patients (76% males, median age 51 years were treated with perioperative EOX. Preoperatively, 93% patients completed EOX. Post-NA chemotherapy, 4 patients progressed, 1 patient died and 94 were taken up for surgery. Of these, 9 were inoperable and 85 patients underwent radical surgery. Of these, 71% (60/85 were able to complete three cycles of adjuvant EOX. The compliance to complete all 6 cycles of perioperative chemotherapy was 64%. Grade 3 and 4 toxicities were comparable to the MAGIC dataset apart from higher number of diarrhea in our patients. Conclusions: In patients with resectable GO adenocarcinoma, it is possible to deliver the MAGIC-type perioperative chemotherapy with EOX with better compliance, toxicity, and efficacy rates.

  14. Investigation of (3,3) resonance effects on the properties of neutron-rich double magic spherical finite nucleus, 132Sn, in the ground state and under compression

    Indian Academy of Sciences (India)

    Mohammed H E Abu-Sei'leek

    2011-04-01

    Within the framework of the radially constrained spherical Hartree–Fock (CSHF) approximation, the resonance effects of delta on the properties of neutron-rich double magic spherical nucleus 132Sn were studied. It was found that most of the increase in the nuclear energy generated under compression was used to create massive particles. For 132Sn nucleus under compression at 3.19 times density of the normal nuclear density, the excited nucleons to s were increased sharply up to 16% of the total number of constituents. This result is consistent with the values extracted from relativistic heavy-ion collisions. The single particle energy levels were calculated and their behaviours under compression were examined. A meaningful agreement was obtained between the results with effective Hamiltonian and that with the phenomenological shell model for the low-lying single-particle spectra. The results suggest considerable reduction in compressibility for the nucleus, and softening of the equation of state with the inclusion of s in the nuclear dynamics.

  15. Explanations of a magic trick across the life span

    Directory of Open Access Journals (Sweden)

    Jay A Olson

    2015-03-01

    Full Text Available Studying how children and adults explain magic tricks can reveal developmental differences in cognition. We showed 167 children (aged 4 to 13 years a video of a magician making a pen vanish and asked them to explain the trick. Although most claimed to know the secret, none of them correctly identified it. The younger children provided more supernatural interpretations and more often took the magician’s actions at face value. Combined with a similar study of adults (N=1008, we found that both young children and older adults were particularly overconfident in their explanations of the trick. Our methodology demonstrates the feasibility of using magic to study cognitive development across the life span.

  16. MAGIC Gamma-ray Observations of the Perseus Galaxy Cluster

    CERN Document Server

    Zandanel, Fabio; Lombardi, Saverio; Eisenacher, Dorit; Hildebrand, Dorothee; Prada, Francisco; Pfrommer, Christoph; Pinzke, Anders

    2013-01-01

    In order to detect the gamma-ray emission from cosmic ray (CR) interactions with the intra-cluster medium, the ground-based imaging Cherenkov telescope MAGIC conducted the deepest-to-date observational campaign targeting a galaxy cluster at very high-energies (> 100 GeV) and observed the Perseus cluster for a total of 85 hr during 2009-2011. The observations constrain the average CR-to-thermal pressure ratio to be 1-2% and the maximum CR acceleration efficiency at structure formation shocks to be 4-9 muG. This range is well below the field strength inferred from Faraday rotation measurements and, therefore, the hadronic model remains a plausible explanation of the Perseus radio mini-halo. Following this successful campaign, MAGIC is continuing collecting data on Perseus.

  17. Observation of the Perseus galaxy cluster with the MAGIC telescopes

    CERN Document Server

    Lombardi, S; Colin, P; Doro, M; Hildebrand, D; Prada, F; Pfrommer, C; Pinzke, A

    2011-01-01

    The MAGIC ground-based Imaging Cherenkov experiment observed the Perseus galaxy cluster for a total of about 25 hr between November and December 2008 in single telescope mode and for nearly 90 hr between October 2009 and February 2011 in stereoscopic mode. This survey represents the deepest observation of a cluster of galaxies at very high energies ever. It resulted in the detection of the central radio galaxy NGC 1275 and the head-tail radio galaxy IC 310. It also permits for the first time to put constraints on emission models predicting gamma-rays from cosmic ray acceleration in the cluster and to investigate dark matter scenarios. Here, we will report the latest MAGIC results on these studies.

  18. Experimental magic state distillation for fault-tolerant quantum computing.

    Science.gov (United States)

    Souza, Alexandre M; Zhang, Jingfu; Ryan, Colm A; Laflamme, Raymond

    2011-01-25

    Any physical quantum device for quantum information processing (QIP) is subject to errors in implementation. In order to be reliable and efficient, quantum computers will need error-correcting or error-avoiding methods. Fault-tolerance achieved through quantum error correction will be an integral part of quantum computers. Of the many methods that have been discovered to implement it, a highly successful approach has been to use transversal gates and specific initial states. A critical element for its implementation is the availability of high-fidelity initial states, such as |0〉 and the 'magic state'. Here, we report an experiment, performed in a nuclear magnetic resonance (NMR) quantum processor, showing sufficient quantum control to improve the fidelity of imperfect initial magic states by distilling five of them into one with higher fidelity.

  19. Experimental magic state distillation for fault-tolerant quantum computing

    CERN Document Server

    Souza, Alexandre M; Ryan, Colm A; Laflamme, Raymond; 10.1038/ncomms1166

    2011-01-01

    Any physical quantum device for quantum information processing is subject to errors in implementation. In order to be reliable and efficient, quantum computers will need error correcting or error avoiding methods. Fault-tolerance achieved through quantum error correction will be an integral part of quantum computers. Of the many methods that have been discovered to implement it, a highly successful approach has been to use transversal gates and specific initial states. A critical element for its implementation is the availability of high-fidelity initial states such as |0> and the Magic State. Here we report an experiment, performed in a nuclear magnetic resonance (NMR) quantum processor, showing sufficient quantum control to improve the fidelity of imperfect initial magic states by distilling five of them into one with higher fidelity.

  20. Polymorphism in magic-sized Au144(SR)60 clusters

    Science.gov (United States)

    Jensen, Kirsten M. Ø.; Juhas, Pavol; Tofanelli, Marcus A.; Heinecke, Christine L.; Vaughan, Gavin; Ackerson, Christopher J.; Billinge, Simon J. L.

    2016-06-01

    Ultra-small, magic-sized metal nanoclusters represent an important new class of materials with properties between molecules and particles. However, their small size challenges the conventional methods for structure characterization. Here we present the structure of ultra-stable Au144(SR)60 magic-sized nanoclusters obtained from atomic pair distribution function analysis of X-ray powder diffraction data. The study reveals structural polymorphism in these archetypal nanoclusters. In addition to confirming the theoretically predicted icosahedral-cored cluster, we also find samples with a truncated decahedral core structure, with some samples exhibiting a coexistence of both cluster structures. Although the clusters are monodisperse in size, structural diversity is apparent. The discovery of polymorphism may open up a new dimension in nanoscale engineering.

  1. Ghosts, UFOs, and magic: positive affect and the experiential system.

    Science.gov (United States)

    King, Laura A; Burton, Chad M; Hicks, Joshua A; Drigotas, Stephen M

    2007-05-01

    Three studies examined the potential interactions of the experiential system and positive affect (PA) in predicting superstitious beliefs and sympathetic magic. In Study 1, experientiality and induced positive mood interacted to predict the emergence of belief in videos purporting to show unidentified flying objects or ghosts. In Study 2, naturally occurring PA interacted with experientiality to predict susceptibility to sympathetic magic, specifically difficulty in throwing darts at a picture of a baby (demonstrating the law of similarity). In Study 3, induced mood interacted with experientiality to predict sitting farther away from, and expressing less liking for, a partner who had stepped in excrement (demonstrating the law of contagion). Results are interpreted as indicating that PA promotes experiential processing. Implications for the psychology of nonrational beliefs and behaviors are discussed.

  2. Magical formulas in Pliny's natural history: origins, sources, parallels.

    Science.gov (United States)

    Gaillard-Seux, Patricia

    2014-01-01

    Pliny the Elder was the first Latin medical author to mention magical formulas. His writings refer to twenty-seven in all, thirteen being of the simplest type. The origin is discernible for two-thirds of them. A Latin origin is noted for only two of them, and two are given in Greek The Greek influence seems decisive, with an important role played by the sympathies-antipathies and Pseudo-Democritus trend. Nine magical formulas are attributed to magi and one is also found in the Cyranides (Kupsilonrhoalphavídeltaepsilonzeta) and the Geoponica (gammaepsilonomegapiovichialpha). An author is named for only one incantation: King Attalus III of Pergamum. One carmen probably dates back to a model existing in Classical Greece, which is likely to be true even for one of the incantations in Greek. The text of the latter needs to be better understood in order for one to grasp its principle of action and perhaps its origin.

  3. Remote Mentoring Young Females in STEM through MAGIC

    CERN Document Server

    Khare, Ritu; Pramanick, Ira

    2013-01-01

    The limited representation of women in STEM workforce is a concerning national issue. It has been found that the gender stratification is not due to the lack of talent amongst young females, but due to the lack of access to female role models. To this end, "remote mentoring" is an effective way to offer nation-wide personalized STEM mentoring to young females from all segments of the society. In this paper, we introduce MAGIC, an organization dedicated to mentoring young females in STEM through remote methods. We conduct a retrospective study of MAGIC's formative years and present our experience in remotely establishing 23 highly tailored mentor-mentee pairs. We provide several key findings on STEM remote mentoring, such as popular communication tools, frequently sought STEM skills among girls, and projects that could be accomplished through remote mentoring. Furthermore, we present key challenges faced by mentors and mentees, notable outcomes, and lessons learnt about remote mentoring.

  4. Magical Empiricism and 'Exposed Being' in Medicine and Traditional Healing.

    Science.gov (United States)

    Thornton, Robert

    2015-01-01

    Southern African traditional healers often generalize too broadly from discrete ('accidental') instances of success, partly to recruit a clientele, while biomedicine frequently reasons incorrectly from the general to the specific. Both logics are based on empirical observations, but are inversions of each other; these I characterize as 'magical empiricism.' 'Magic' functions as a metapragmatic discourse to recruit a clientele from a skeptical public that doubts the efficacy of any therapeutic interventions, and it acts in parallel with other practical (and efficacious) healing acts. I introduce the concept of 'exposed beings' to describe locally specific constructions of the person as patient and healer. This helps to explain the existence and enduring appeal of many different medical practices and beliefs in South Africa, but I suggest that 'medical parallelism' rather than 'pluralism' might be more accurate.

  5. Explanations of a magic trick across the life span

    Science.gov (United States)

    Olson, Jay A.; Demacheva, Irina; Raz, Amir

    2015-01-01

    Studying how children and adults explain magic tricks can reveal developmental differences in cognition. We showed 167 children (aged 4–13 years) a video of a magician making a pen vanish and asked them to explain the trick. Although most tried to explain the secret, none of them correctly identified it. The younger children provided more supernatural interpretations and more often took the magician's actions at face value. Combined with a similar study of adults (N = 1008), we found that both young children and older adults were particularly overconfident in their explanations of the trick. Our methodology demonstrates the feasibility of using magic to study cognitive development across the life span. PMID:25798117

  6. MagIC: Fluid dynamics in a spherical shell simulator

    Science.gov (United States)

    Wicht, J.; Gastine, T.; Barik, A.; Putigny, B.; Yadav, R.; Duarte, L.; Dintrans, B.

    2017-09-01

    MagIC simulates fluid dynamics in a spherical shell. It solves for the Navier-Stokes equation including Coriolis force, optionally coupled with an induction equation for Magneto-Hydro Dynamics (MHD), a temperature (or entropy) equation and an equation for chemical composition under both the anelastic and the Boussinesq approximations. MagIC uses either Chebyshev polynomials or finite differences in the radial direction and spherical harmonic decomposition in the azimuthal and latitudinal directions. The time-stepping scheme relies on a semi-implicit Crank-Nicolson for the linear terms of the MHD equations and a Adams-Bashforth scheme for the non-linear terms and the Coriolis force.

  7. The concept of magic circle: a critical reading

    Directory of Open Access Journals (Sweden)

    Arlete dos Santos Petry

    2013-09-01

    Full Text Available This article deals with establishing and discussing the concept of magic circle - often present in game studies - and ponder the possible relations with the concept of liminality, worked in cultural anthropology from the rites of passage standpoint in Van Gennep and Victor Turner and with the concept of transitional phenomenon by psychoanalyst Donald Winnicott. Towards that, we seek references in studies of the respective areas of knowledge, in order to reflect on the experience of play. The establishment of the relationship between the concepts mentioned - magic circle, liminality, transitional phenomenon - takes a step forward on the path that seeks to answer what play is and its relevance in contemporary life. Thus, given the large access to digital games today, this article provides a relevant contribution to Communication studies.

  8. The Active Mirror Control of the MAGIC Telescope

    CERN Document Server

    Biland, A; Anderhub, H; Danielyan, V; Hakobyan, D; Lorenz, E; Mirzoyan, R

    2007-01-01

    One of the main design goals of the MAGIC telescopes is the very fast repositioning in case of Gamma Ray Burst (GRB) alarms, implying a low weight of the telescope dish. This is accomplished by using a space frame made of carbon fiber epoxy tubes, resulting in a strong but not very rigid support structure. Therefore it is necessary to readjust the individual mirror tiles to correct for deformations of the dish under varying gravitational load while tracking an object. We present the concept of the Active Mirror Control (AMC) as implemented in the MAGIC telescopes and the actual performance reached. Additionally we show that also telescopes using a stiff structure can benefit from using an AMC.

  9. MAGIC Database and Interfaces: An Integrated Package for Gene Discovery and Expression

    Directory of Open Access Journals (Sweden)

    Lee H. Pratt

    2006-03-01

    Full Text Available The rapidly increasing rate at which biological data is being produced requires a corresponding growth in relational databases and associated tools that can help laboratories contend with that data. With this need in mind, we describe here a Modular Approach to a Genomic, Integrated and Comprehensive (MAGIC Database. This Oracle 9i database derives from an initial focus in our laboratory on gene discovery via production and analysis of expressed sequence tags (ESTs, and subsequently on gene expression as assessed by both EST clustering and microarrays. The MAGIC Gene Discovery portion of the database focuses on information derived from DNA sequences and on its biological relevance. In addition to MAGIC SEQ-LIMS, which is designed to support activities in the laboratory, it contains several additional subschemas. The latter include MAGIC Admin for database administration, MAGIC Sequence for sequence processing as well as sequence and clone attributes, MAGIC Cluster for the results of EST clustering, MAGIC Polymorphism in support of microsatellite and single-nucleotide-polymorphism discovery, and MAGIC Annotation for electronic annotation by BLAST and BLAT. The MAGIC Microarray portion is a MIAME-compliant database with two components at present. These are MAGIC Array-LIMS, which makes possible remote entry of all information into the database, and MAGIC Array Analysis, which provides data mining and visualization. Because all aspects of interaction with the MAGIC Database are via a web browser, it is ideally suited not only for individual research laboratories but also for core facilities that serve clients at any distance.

  10. VizieR Online Data Catalog: MAGIC map of 1E 2259+586 (Aleksic+, 2013)

    Science.gov (United States)

    Aleksic, J.; Antonelli, L. A.; Antoranz, P.; Asensio, M.; Barres de Almeida, U.; Barrio, J. A.; Becerra Gonzalez, J.; Bednarek, W.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Boller, A.; Bonnoli, G.; Borla Tridon, D.; Bretz, T.; Carmona, E.; Carosi, A.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Cossio, L.; Covino, S.; da Vela, P.; Dazzi, F.; de Angelis, A.; de Caneva, G.; de Cea Del Pozo, E.; de Lotto, B.; Delgado Mendez, C.; Diago Ortega, A.; Doert, M.; Dominis Prester, D.; Dorner, D.; Doro, M.; Eisenacher, D.; Elsaesser, D.; Ferenc, D.; Fonseca, M. V.; Font, L.; Fruck, C.; Garcia Lopez, R. J.; Garczarczyk, M.; Garrido Terrats, D.; Gaug, M.; Giavitto, G.; Godinovic, N.; Gonzalez Munoz, A.; Gozzini, S. R.; Hadamek, A.; Hadasch, D.; Hafner, D.; Herrero, A.; Hose, J.; Hrupec, D.; Huber, B.; Jankowski, F.; Jogler, T.; Kadenius, V.; Klepser, S.; Knoetig, M. L.; Krahenbuhl, T.; Krause, J.; Kushida, J.; La Barbera, A.; Lelas, D.; Leonardo, E.; Lewandowska, N.; Lindfors, E.; Lombardi, S.; Lopez, M.; Lopez-Coto, R.; Lopez-Oramas, A.; L Orenz, E.; Makariev, M.; Maneva, G.; Mankuzhiyil, N.; Mannheim, K.; Maraschi, L.; Marcote, B.; Mariotti, M.; Martinez, M.; Mazin, D.; Meucci, M.; Miranda, J. M.; Mirzoyan, R.; Moldon, J.; Moralejo, A.; Munar-Adrover, P.; Niedzwiecki, A.; Nieto, D.; Nilsson, K.; Nowak, N.; Orito, R.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Partini, S.; Persic, M.; Pilia, M.; Pochon, J.; Prada, F.; Prada Moroni, P. G.; Prandini, E.; Puljak, I.; Reichardt, I.; Reinthal, R.; Rhode, W.; Ribo, M.; Rico, J.; Rugamer, S.; Saito, K.; Saito, T. Y.; Salvati, M.; Satalecka, K.; Scalzotto, V.; Scapin, V.; Schultz, C.; Saggion, A.; Schweizer, T.; Shore, S. N.; Sillanpaa, A.; Sitarek, J.; Snidaric, I.; Sobczynska, D.; Spanier, F.; Spiro, S.; Stamatescu, V.; Stamerra, A.; Steinke, B.; Storz, J.; Sun, S.; Suric, T.; Takalo, L.; Takami, H.; Tavecchio, F.; Temnikov, P.; Terzic, T.; Tescaro, D.; Teshima, M.; Tibolla, O.; Torres, D. F.; Toyama, T.; Treves, A.; Uellenbeck, M.; Vogler, P.; Wagner, R. M.; Weitzel, Q.; Zabalza, V.; Zandanel, F.; Zanin, R.; Rea, N.

    2012-11-01

    We observed the two sources with atmospheric Cherenkov telescopes in the very high energy range (E>100GeV). 4U 0142+61 was observed with the MAGIC I telescope in 2008 for ~25h and 1E 2259+586 was observed with the MAGIC stereoscopic system in 2010 for ~14h. The data were analyzed with the standard MAGIC analysis software. (3 data files).

  11. Perceptual elements in Penn & Teller's "Cups and Balls" magic trick.

    Science.gov (United States)

    Rieiro, Hector; Martinez-Conde, Susana; Macknik, Stephen L

    2013-01-01

    Magic illusions provide the perceptual and cognitive scientist with a toolbox of experimental manipulations and testable hypotheses about the building blocks of conscious experience. Here we studied several sleight-of-hand manipulations in the performance of the classic "Cups and Balls" magic trick (where balls appear and disappear inside upside-down opaque cups). We examined a version inspired by the entertainment duo Penn & Teller, conducted with three opaque and subsequently with three transparent cups. Magician Teller used his right hand to load (i.e. introduce surreptitiously) a small ball inside each of two upside-down cups, one at a time, while using his left hand to remove a different ball from the upside-down bottom of the cup. The sleight at the third cup involved one of six manipulations: (a) standard maneuver, (b) standard maneuver without a third ball, (c) ball placed on the table, (d) ball lifted, (e) ball dropped to the floor, and (f) ball stuck to the cup. Seven subjects watched the videos of the performances while reporting, via button press, whenever balls were removed from the cups/table (button "1") or placed inside the cups/on the table (button "2"). Subjects' perception was more accurate with transparent than with opaque cups. Perceptual performance was worse for the conditions where the ball was placed on the table, or stuck to the cup, than for the standard maneuver. The condition in which the ball was lifted displaced the subjects' gaze position the most, whereas the condition in which there was no ball caused the smallest gaze displacement. Training improved the subjects' perceptual performance. Occlusion of the magician's face did not affect the subjects' perception, suggesting that gaze misdirection does not play a strong role in the Cups and Balls illusion. Our results have implications for how to optimize the performance of this classic magic trick, and for the types of hand and object motion that maximize magic misdirection.

  12. Self-censorship in Massimo Bontempelli’s Magical Realism

    Directory of Open Access Journals (Sweden)

    Wissia Fiorucci

    2015-05-01

    Full Text Available This article aims to investigate the interplay between censorship, self-censorship and the narrative strategies of magical realism in Il figlio di due madri by Italian author Massimo Bontempelli (1878–1960.Having been head of the National Fascist Writers Union from the mid- to late-1920s, critics have noted that Bontempelli’s detachment from the Fascist credo emerges in his work from the mid- to late-1930s. I intend to problematise this perspective, by recognising the significance of Il figlio di due madri (1929 in the development of Bontempelli’s anti-Fascist sentiment. This work preceded (by several years Bontempelli’s official break with Fascism in 1936, when he published an article against the political control of the arts and caesarianism in La gazzetta del popolo. An anti-Fascist sentiment had, however, in my view already been expressed in Bontempelli’s works of magical realism Il figlio di due madri (1929 and Vita e morte di Adria e dei suoi figli (1930. These two novels deal with controversial topics that, I would claim, refute some of Fascism’s foremost principles, an appraisal that was disguised through deliberate acts of self-censorship. More precisely, it is through his deconstruction of mimetic writing that Bontempelli’s critique of the regime comes into existence, as the narrative strategies I deem instrumental to his self-censorship (e.g. authorial reticence, metaphor, mythopoiesis reflect the poetics of magical realism in «its inherent transgressive and subversive qualities» (Bowers 2004: 63. By conveying a rejection of the systematised understanding of literature that Bontempelli associates with literary realisms, at the same time he conveys his ideological refusal of dogmatic views of reality. Thus, in his mystifying realism, magic acts as both a tool for concealing his ideology—a tool for self-censorship, that is—and as the very means by which this ideology can be generated.

  13. Discovering magic of mobile technology in business: strategic marketing perspective

    OpenAIRE

    Bolat, Elvira

    2016-01-01

    Mobile technology penetrated all aspects of social and business existence. Studies around mobile technology mostly address the use and adoption process of mobile marketing or mobile commerce from a consumer perspective rather than from a business perspective. Another concern of majority of studies on the use of mobile technology is a focus on technical nature of mobile devices despite the fact that true magic of technology resides in its mobilisation and usage – the deployment of mobile techn...

  14. From the Magic of Light to the Destruction of Night

    Science.gov (United States)

    Posch, Thomas

    2012-09-01

    Life on the Earth depends on the light from the Sun. Humans generally have a very positive attitude towards light. This paper discusses the 'magic of light' - i.e. our dependence on and even addiction to light - and how it gradually led to the destruction of natural darkness by means of excessive artificial illumination. Furthermore, we develop a theory of the aesthetic value of natural nightscapes, which we illustrate by masterpieces from the history of painting.

  15. Parsivel Disdrometer Support for MAGIC Field Campaign Report

    Energy Technology Data Exchange (ETDEWEB)

    Kollias, Pavlos [Stony Brook Univ., NY (United States); Bartholomew, Mary Jane [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2016-06-01

    In the Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign, the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility’s second Mobile Facility (AMF2) was deployed on the Horizon Lines cargo ship Spirit traversing a route between Los Angeles, California and Honolulu, Hawaii for one full year. The transect for this deployment was chosen specifically because it crosses the stratocumulus-to-cumulus transition of the North-East Pacific, a region of great climatic interest and a close approximation to the transect used for several focused model intercomparison efforts. The cloud type and cover along this transect vary from low marine stratocumulus with high areal coverage near the California coast to isolated shallow cumulus with much lower areal coverage in the trade wind regime near Hawaii. The low marine stratocumulus decks, with their high albedo, exert a major influence on the shortwave radiation budget in the ocean environment, and thus provide an extremely important forcing of Earth’s climate. The trade cumulus clouds play a large role in the global surface evaporation and also in Earth’s albedo. One of the important science drivers of the MAGIC campaign was to measure the properties of clouds and precipitation, specifically cloud type, fractional coverage, base height, physical thickness, liquid water path (LWP), optical depth, and drizzle and precipitation frequency, amount, and extent. Retrievals of cloud and precipitation properties during the MAGIC campaign relied critically on the calibration of the AMF2 radar systems. For MAGIC this included the KAZR and M-WACR, both fixed zenith-pointing systems, and the 1290 MHz beam steerable wind profiler.

  16. Social misdirection fails to enhance a magic illusion.

    Science.gov (United States)

    Cui, Jie; Otero-Millan, Jorge; Macknik, Stephen L; King, Mac; Martinez-Conde, Susana

    2011-01-01

    Visual, multisensory and cognitive illusions in magic performances provide new windows into the psychological and neural principles of perception, attention, and cognition. We investigated a magic effect consisting of a coin "vanish" (i.e., the perceptual disappearance of a coin after a simulated toss from hand to hand). Previous research has shown that magicians can use joint attention cues such as their own gaze direction to strengthen the observers' perception of magic. Here we presented naïve observers with videos including real and simulated coin tosses to determine if joint attention might enhance the illusory perception of simulated coin tosses. The observers' eye positions were measured, and their perceptual responses simultaneously recorded via button press. To control for the magician's use of joint attention cues, we occluded his head in half of the trials. We found that subjects did not direct their gaze at the magician's face at the time of the coin toss, whether the face was visible or occluded, and that the presence of the magician's face did not enhance the illusion. Thus, our results show that joint attention is not necessary for the perception of this effect. We conclude that social misdirection is redundant and possibly detracting to this very robust sleight-of-hand illusion. We further determined that subjects required multiple trials to effectively distinguish real from simulated tosses; thus the illusion was resilient to repeated viewing.

  17. Magic, illusions, and bloopers and blunders in optics

    Science.gov (United States)

    Fischer, Robert E.

    2001-12-01

    This paper presents the use of optics as it relates to the various forms of illusions and magic, and we will present many of the best optical illusions to demonstrate the use of optics. In magic and visual illusions, objects are made to appear different from how we expect them to appear. Performing such illusions show us things that are impossible based on our preconceived knowledge base. This includes levitation, sawing a lady in half, or creating other similar effects. Optical illusions often take the form of illusions of relative size, shifting perception of items, and other ways of fooling the eye, the mind and the brain. These effects are all highly deceiving to the viewer. In addition to optical illusions, there is close up, parlor and stage magic. These would include classical effects as well as contemporary effects with items such as cards, coins, rings, etc. Here too the goal of the magician is to totally mystify the audience. Another topic of the paper is

  18. Social Misdirection Fails to Enhance a Magic Illusion

    Science.gov (United States)

    Cui, Jie; Otero-Millan, Jorge; Macknik, Stephen L.; King, Mac; Martinez-Conde, Susana

    2011-01-01

    Visual, multisensory and cognitive illusions in magic performances provide new windows into the psychological and neural principles of perception, attention, and cognition. We investigated a magic effect consisting of a coin “vanish” (i.e., the perceptual disappearance of a coin after a simulated toss from hand to hand). Previous research has shown that magicians can use joint attention cues such as their own gaze direction to strengthen the observers’ perception of magic. Here we presented naïve observers with videos including real and simulated coin tosses to determine if joint attention might enhance the illusory perception of simulated coin tosses. The observers’ eye positions were measured, and their perceptual responses simultaneously recorded via button press. To control for the magician’s use of joint attention cues, we occluded his head in half of the trials. We found that subjects did not direct their gaze at the magician’s face at the time of the coin toss, whether the face was visible or occluded, and that the presence of the magician’s face did not enhance the illusion. Thus, our results show that joint attention is not necessary for the perception of this effect. We conclude that social misdirection is redundant and possibly detracting to this very robust sleight-of-hand illusion. We further determined that subjects required multiple trials to effectively distinguish real from simulated tosses; thus the illusion was resilient to repeated viewing. PMID:22046155

  19. The role of magical thinking in forecasting the future.

    Science.gov (United States)

    Stavrova, Olga; Meckel, Andrea

    2017-02-01

    This article explores the role of magical thinking in the subjective probabilities of future chance events. In five experiments, we show that individuals tend to predict a more lucky future (reflected in probability judgements of lucky and unfortunate chance events) for someone who happened to purchase a product associated with a highly moral person than for someone who unknowingly purchased a product associated with a highly immoral person. In the former case, positive events were considered more likely than negative events, whereas in the latter case, the difference in the likelihood judgement of positive and negative events disappeared or even reversed. Our results indicate that this effect is unlikely to be driven by participants' immanent justice beliefs, the availability heuristic, or experimenter demand. Finally, we show that individuals rely more heavily on magical thinking when their need for control is threatened, thus suggesting that lack of control represents a factor in driving magical thinking in making predictions about the future. © 2016 The British Psychological Society.

  20. Social misdirection fails to enhance a magic illusion

    Directory of Open Access Journals (Sweden)

    Jie eCui

    2011-09-01

    Full Text Available Visual, multisensory and cognitive illusions in magic performances provide new windows into the psychological and neural principles of perception, attention and cognition. We investigated a magic effect consisting of a coin vanish (i.e. the perceptual disappearance of a coin after a simulated toss from hand to hand. Previous research has shown that magicians can use joint attention cues such as their own gaze direction to strengthen the observers’ perception of magic. Here we presented naïve observers with videos including real and simulated coin tosses to determine if joint attention might enhance the illusory perception of simulated coin tosses. The observers’ eye positions were measured, and their perceptual responses simultaneously recorded via button press. To control for the magician’s use of joint attention cues, we occluded his head in half of the trials. We found that subjects did not direct their gaze at the magician’s face at the time of the coin toss, whether the face was visible or occluded, and that the presence of the magician’s face did not enhance the illusion. Thus, our results show that joint attention is not necessary for the perception of this effect. We conclude that social misdirection is redundant and possibly detracting to this very robust sleight-of-hand illusion. We further determined that subjects required multiple trials to effectively distinguish real from simulated tosses; thus the illusion was resilient to repeated viewing.

  1. Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC

    CERN Document Server

    Ahnen, M L; Antonelli, L A; Antoranz, P; Babic, A; Banerjee, B; Bangale, P; de Almeida, U Barres; Barrio, J A; González, J Becerra; Bednarek, W; Bernardini, E; Biasuzzi, B; Biland, A; Blanch, O; Bonnefoy, S; Bonnoli, G; Borracci, F; Bretz, T; Buson, S; Carmona, E; Carosi, A; Chatterjee, A; Clavero, R; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Covino, S; Da Vela, P; Dazzi, F; De Angelis, A; De Lotto, B; Wilhelmi, E de Oña; Mendez, C Delgado; Di Pierro, F; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Einecke, S; Glawion, D Eisenacher; Elsaesser, D; Fernández-Barral, A; Fidalgo, D; Fonseca, M V; Font, L; Frantzen, K; Fruck, C; Galindo, D; López, R J García; Garczarczyk, M; Terrats, D Garrido; Gaug, M; Giammaria, P; Godinović, N; Muñoz, A González; Gora, D; Guberman, D; Hadasch, D; Hahn, A; Hanabata, Y; Hayashida, M; Herrera, J; Hose, J; Hrupec, D; Hughes, G; Idec, W; Kodani, K; Konno, Y; Kubo, H; Kushida, J; La Barbera, A; Lelas, D; Lindfors, E; Lombardi, S; Longo, F; López, M; López-Coto, R; Lorenz, E; Majumdar, P; Makariev, M; Mallot, K; Maneva, G; Manganaro, M; Mannheim, K; Maraschi, L; Marcote, B; Mariotti, M; Martínez, M; Mazin, D; Menzel, U; Miranda, J M; Mirzoyan, R; Moralejo, A; Moretti, E; Nakajima, D; Neustroev, V; Niedzwiecki, A; Rosillo, M Nievas; Nilsson, K; Nishijima, K; Noda, K; Orito, R; Overkemping, A; Paiano, S; Palacio, J; Palatiello, M; Paneque, D; Paoletti, R; Paredes, J M; Paredes-Fortuny, X; Pedaletti, G; Persic, M; Poutanen, J; Moroni, P G Prada; Prandini, E; Puljak, I; Rhode, W; Ribó, M; Rico, J; Garcia, J Rodriguez; Saito, T; Satalecka, K; Schultz, C; Schweizer, T; Shore, S N; Sillanpää, A; Sitarek, J; Snidaric, I; Sobczynska, D; Stamerra, A; Steinbring, T; Strzys, M; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzić, T; Tescaro, D; Teshima, M; Thaele, J; Torres, D F; Toyama, T; Treves, A; Verguilov, V; Vovk, I; Ward, J E; Will, M; Wu, M H; Zanin, R

    2015-01-01

    Aims: To investigate the extension of the very-high-energy spectral tail of the Crab pulsar at energies above 400 GeV. Methods: We analyzed $\\sim$320 hours of good quality data of Crab with the MAGIC telescope, obtained from February 2007 until April 2014. Results: We report the most energetic pulsed emission ever detected from the Crab pulsar reaching up to 1.5 TeV. The pulse profile shows two narrow peaks synchronized with the ones measured in the GeV energy range. The spectra of the two peaks follow two different power-law functions from 70 GeV up to 1.5 TeV and connect smoothly with the spectra measured above 10 GeV by the Large Area Telescope (LAT) on board of the Fermi satellite. When making a joint fit of the LAT and MAGIC data, above 10 GeV, the photon indices of the spectra differ by 0.5$\\pm$0.1. Conclusions: We measured with the MAGIC telescopes the most energetic pulsed photons from a pulsar to date. Such TeV pulsed photons require a parent population of electrons with a Lorentz factor of at least ...

  2. Magical properties of 2540 km baseline Superbeam Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Umasankar, Sankagiri; Raut, Sushant [Department of Physics, Indian Institute of Technology - I.I.T. Bombay, Mumbai, 400076 Maharashtra (India); Singh, Ravi Shanker [Department of Physics, Barus-Holley building, 184 Hope Street, Brown University, Box 1843, Providence, RI 02912 (United States)

    2010-07-01

    The determination if the neutrino mixing matrix and mass-squared differences is one of the aims of neutrino physics today. This is a complicated affair, owing to the various parameter degeneracies. While the proposed 7500 km long 'magic baseline' experiment simplifies the task considerably, the intense beam required for such an experiment seems futuristic by current standards. As an alternative, we highlight the 'magical' properties of the 2540 km baseline. We propose a Superbeam experiment at this much shorter baseline with a narrow band NuMI-like beam, and demonstrate the ability of this single setup to distinguish between the two mass hierarchies. This, we show, is possible with a moderate exposure and by running the experiment in the neutrino mode only. Our results hold up to fairly small values of the mixing angle {theta}{sub 13} and irrespective of the value of the CP violating parameter. Unlike the magic baseline, it may also be possible to use this setup to measure CP violation in neutrino oscillation experiments. (authors)

  3. Magic wavelengths for the $5s-18s$ transition in rubidium

    CERN Document Server

    Goldschmidt, E A; Koller, S B; Wyllie, R; Brown, R C; Porto, J V; Safronova, U I; Safronova, M S

    2015-01-01

    Magic wavelengths, for which there is no differential ac Stark shift for the ground and excited state of the atom, allow trapping of excited Rydberg atoms without broadening the optical transition. This is an important tool for implementing quantum gates and other quantum information protocols with Rydberg atoms, and reliable theoretical methods to find such magic wavelengths are thus extremely useful. We use a high-precision all-order method to calculate magic wavelengths for the $5s-18s$ transition of rubidium, and compare the calculation to experiment by measuring the light shift for atoms held in an optical dipole trap at a range of wavelengths near a calculated magic value.

  4. SEARCH FOR GAMMA-RAY EMISSION FROM THE SUPERNOVA REMNANT IC 443 WITH THE MAGIC TELESCOPE

    Directory of Open Access Journals (Sweden)

    R. J. García López

    2009-01-01

    Full Text Available TeV observations of Supernova remnants (SNRs and, in particular, of SNRs which appear to be physically related to EGRET sources are a prime target for the MAGIC telescope. MAGIC's spatial resolution and sensi- tivity can probe the main mechanism responsible for producing high energy photons in the SNR neighbourhood. Based on a recent systematical analysis of the molecular environment of the vicinity of all SNR-EGRET source pairs, the IC 443 remnant was chosen for observations with MAGIC. We brie y describe the observational strategy which provided the detection of a new very-high energy gamma-ray source: MAGIC 0616+225.

  5. Melting of "non-magic" argon clusters and extrapolation to the bulk limit

    Science.gov (United States)

    Senn, Florian; Wiebke, Jonas; Schumann, Ole; Gohr, Sebastian; Schwerdtfeger, Peter; Pahl, Elke

    2014-01-01

    The melting of argon clusters ArN is investigated by applying a parallel-tempering Monte Carlo algorithm for all cluster sizes in the range from 55 to 309 atoms. Extrapolation to the bulk gives a melting temperature of 85.9 K in good agreement with the previous value of 88.9 K using only Mackay icosahedral clusters for the extrapolation [E. Pahl, F. Calvo, L. Koči, and P. Schwerdtfeger, "Accurate melting temperatures for neon and argon from ab initio Monte Carlo simulations," Angew. Chem., Int. Ed. 47, 8207 (2008)]. Our results for argon demonstrate that for the extrapolation to the bulk one does not have to restrict to magic number cluster sizes in order to obtain good estimates for the bulk melting temperature. However, the extrapolation to the bulk remains a problem, especially for the systematic selection of suitable cluster sizes.

  6. HYDROGEN AND DEUTERIUM NMR OF SOLIDS BY MAGIC ANGLE SPINNING

    Energy Technology Data Exchange (ETDEWEB)

    Eckman, R.R.

    1982-10-01

    The nuclear magnetic resonance of solids has long been characterized by very large spectral broadening which arises from internuclear dipole-dipole coupling or the nuclear electric quadrupole interaction. These couplings can obscure the smaller chemical shift interaction and make that information unavailable. Two important and difficult cases are that of hydrogen and deuterium. For example, the homonuclear dipolar broadening, HD, for hydrogen is usually several tens of kilohertz. For deuterium, HD is relatively small; however, the quadrupole interaction causes a broadening which can be hundreds of kilohertz in polycrystalline or amorphous solids. The development of cross polarization, heteronuclear radiofrequency decoupling, and coherent averaging of nuclear spin interactions has provided measurement of chemical shift tensors in solids. Recently, double quantum NMR and double quantum decoupling have led to measurement of deuterium and proton chemical shift tensors, respectively. A general problem of these experiments is the overlapping of the tensor powder pattern spectra of magnetically distinct sites which cannot be resolved. In this work, high resolution NMR of hydrogen and deuterium in solids is demonstrated. For both nuclei, the resonances are narrowed to obtain liquid-like isotropic spectra by high frequency rotation of the sample about an axis inclined at the magic angle, {beta}{sub m} = Arccos(3{sup -1/2}), with respect to the direction of the external magnetic field. Two approaches have been developed for each nucleus. For deuterium, the powder spectra were narrowed by over three orders of magnitude by magic angle rotation with precise control of {beta}. A second approach was the observation of deuterium double quantum transitions under magic angle rotation. For hydrogen, magic angle rotation alone could be applied to obtain the isotropic spectrum when H{sub D} was small. This often occurs naturally when the nuclei are semi-dilute or involved in internal

  7. Debunking the recurring myth of a magic wavelength for free-space optics

    Science.gov (United States)

    Korevaar, Eric J.; Kim, Isaac I.; McArthur, Bruce

    2002-12-01

    Free-Space Optics (FSO) is a proven, reliable technology for last mile telecommunications applications, used worldwide for both enterprise network building-to-building connections and for wireless access to more traditional land line communications networks. In most mid-latitude coastal cities, link availability at distances above a few hundred meters is primarily affected by fog and low clouds. At longer distances, heavy rain and snow can also affect the link. The most mature technology used in FSO equipment relies on low cost semiconductor lasers or LED"s operating in the near infrared at wavelengths of 785 nm or 850 nm. In the past few years, systems operating at 1550 nm have also been developed. At first the vendors of these systems claimed that the 1550 nm wavelength had better propagation characteristics in severe weather than the 785 nm wavelength. With further analysis and research, those claims were withdrawn. Now there are claims that even longer wavelengths near 10 microns will solve the FSO link availability issues associated with severe weather. Hype about such magic wavelengths for FSO is both a disservice to the investors who will lose the money they are investing based on exaggerated claims, and to the rest of the FSO industry which should be creating realistic expectations for the capability of its equipment. In the weather conditions which normally cause the highest attenuation for FSO systems, namely coastal fog and low clouds, 10 microns offers no propagation advantage over shorter wavelengths.

  8. Poster: Brush, Lasso, or Magic Wand? Picking the Right Tool for Large-Scale Multiple Object Selection Tasks

    DEFF Research Database (Denmark)

    Stenholt, Rasmus; Madsen, Claus B.

    2012-01-01

    Selection of multiple objects is a frequent interaction task in virtual environments. Accomplishing this task efficiently and intuitively is difficult, especially in cases where there are a very large number of objects to be selected. In this work, we seek to investigate two well-known techniques......, a spherical brush and a box-shaped lasso for multiple object selection (MOS), and compare them to a new MOS technique, which we have named the magic wand. This new technique automates a lot the work, which the user would normally have to do manually. The comparison is made through a user study, where users...

  9. [The magic universe of cures: the role of magic practices and witchcraft in the universe of 17th century Mato Grosso].

    Science.gov (United States)

    Sá, Mario

    2009-01-01

    The article analyzes the role of healing agents played by practitioners of magic and witchcraft in Mato Grosso society during the 17th century. It observes that magic and witchcraft were developed as competitors, alternatives or associated with other forms of healing (official and lay). It points out how such roles contributed to the process of subjugating its practitioners, especially Africans, Indians and their descendents, and were appropriated as an opportunity for survival in the colonial slave society. The pastoral visit made by Bruno Pinna in 1785 to Cuiabá and nearby areas served as the principal source of knowledge regarding the practices and practitioners of magic and witchcraft.

  10. Matching the Heavy Vector Meson Theory

    CERN Document Server

    Bijnens, J; Talavera, P

    1998-01-01

    We show how to obtain a ``heavy'' meson effective lagrangian for the case where the number of heavy particles is not conserved. We apply the method in a simple example at tree level and perform then the reduction for the case of vector mesons in Chiral Perturbation Theory in a manifestly chiral invariant fashion. Some examples showing that ``heavy'' meson effective theory also works at the one-loop level are included.

  11. Everyday Magic: Some Mysteries of the Mantlepiece

    Directory of Open Access Journals (Sweden)

    Ralph Mills

    2016-12-01

    Full Text Available Small mass-produced objects, such as ceramic figurines, that may have been displayed on mantelpieces, are found in working-class nineteenth and early twentieth century archaeological contexts. Above the hearth, at the heart of the home, objects located on the mantelpiece could be said to be central in reflecting a number of aspects of the lives of those who placed them there. These could include identity, resistance, memory and superstition.

  12. Heavy flavour in ALICE

    CERN Document Server

    Pillot, Philippe

    2008-01-01

    Open heavy flavours and heavy quarkonium states are expected to provide essential informa- tion on the properties of the strongly interacting system fo rmed in the early stages of heavy-ion collisions at very high energy density. Such probes are espe cially promising at LHC energies where heavy quarks (both c and b) are copiously produced. The ALICE detector shall measure the production of open heavy flavours and heavy quarkonium st ates in both proton-proton and heavy-ion collisions at the LHC. The expected performances of ALICE for heavy flavour physics is discussed based on the results of simulation studies on a s election of benchmark channels

  13. Heavy particle radioactivity from superheavy nuclei leading to $^{298}$114 daughter nuclei

    CERN Document Server

    Santhosh, K P

    2013-01-01

    The feasibility for the alpha decay and the heavy particle decay from the even-even superheavy (SH) nuclei with Z = 116-124 have been studied within the Coulomb and proximity potential model (CPPM). The Universal formula for cluster decay (UNIV) of Poenaru et al., the Universal Decay Law (UDL) and the Scaling Law of Horoi et al., has also been used for the evaluation of the decay half lives. A comparison of our predicted half lives with the values evaluated using these empirical formulas are in agreement with each other and hence CPPM could be considered as a unified model for alpha and cluster decay studies. Within our fission model, we have studied cluster formation probability for various clusters and the maximum cluster formation probability for the decay accompanying $^{298}$114 reveals its doubly magic behavior. In the plots for log_10(T_1/2) against the neutron number of the daughter in the corresponding decay, the half life is found to be the minimum for the decay leading to $^{298}$114 (Z = 114, N = ...

  14. Personal Social Networks and the Cultivation of Expertise in Magic: An Interview Study

    Science.gov (United States)

    Rissanen, Olli; Palonen, Tuire; Pitkänen, Petteri; Kuhn, Gustav; Hakkarainen, Kai

    2013-01-01

    The purpose of the present study was to examine expertise in magic by interviewing 16 prominent Finnish magicians who were identified earlier through a social network analysis of 120 Finnish magicians. A semi-structured interview was administered that addressed the participants' histories; their relationship to magic, the nature of their…

  15. Using Magic Board as a Teaching Aid in Third Grader Learning of Area Concepts

    Science.gov (United States)

    Chang, Wen-Long; Yuan, Yuan; Lee, Chun-Yi; Chen, Min-Hui; Huang, Wen-Guu

    2013-01-01

    The purpose of this study was to explore the impact of incorporating Magic Board in the instruction of concepts related to area. We adopted a non-equivalent quasi-experimental design and recruited participants from two classes of third-grade students in an elementary school in Taoyuan County, Taiwan. Magic Board was used as a teaching aid in the…

  16. 77 FR 28419 - Culturally Significant Objects Imported for Exhibition Determinations: “Gustav Klimt: The Magic...

    Science.gov (United States)

    2012-05-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Culturally Significant Objects Imported for Exhibition Determinations: ``Gustav Klimt: The Magic of Line... determine that the objects to be included in the exhibition ``Gustav Klimt: The Magic of Line,''...

  17. Molecules, magic and forgetful fruit flies: the supernatural science of medical gas research

    Directory of Open Access Journals (Sweden)

    Mychaskiw George

    2011-09-01

    Full Text Available Abstract Medical gas research often involves the study of molecules under extraphysiologic conditions, that is, conditions that do not exist in nature. This "supernatural" nature of medical gas research sometimes produces results that appear to be almost "magic" to those schooled in traditional physiology "Any sufficiently advanced technology is indistinguishable from magic". -Arthur C. Clarke

  18. Molecules, magic and forgetful fruit flies: the supernatural science of medical gas research

    OpenAIRE

    Mychaskiw George

    2011-01-01

    Abstract Medical gas research often involves the study of molecules under extraphysiologic conditions, that is, conditions that do not exist in nature. This "supernatural" nature of medical gas research sometimes produces results that appear to be almost "magic" to those schooled in traditional physiology "Any sufficiently advanced technology is indistinguishable from magic". -Arthur C. Clarke

  19. Molecules, magic and forgetful fruit flies: the supernatural science of medical gas research.

    Science.gov (United States)

    Mychaskiw, George

    2011-09-06

    Medical gas research often involves the study of molecules under extraphysiologic conditions, that is, conditions that do not exist in nature. This "supernatural" nature of medical gas research sometimes produces results that appear to be almost "magic" to those schooled in traditional physiology"Any sufficiently advanced technology is indistinguishable from magic".-Arthur C. Clarke.

  20. To and From the Magic Lantern: Reappearing Photographic Images of The Netherlands in Various Media

    NARCIS (Netherlands)

    Dellmann, S.

    2012-01-01

    In the nineteenth and early twentieth century, the Magic Lantern was among the most popular media to present images on a variety of topics to a variety of audiences. However, most motifs that we see on lantern slides were neither exclusive to nor especially produced for the magic lantern. The author

  1. Disentangling heavy flavor at colliders

    Science.gov (United States)

    Ilten, Philip; Rodd, Nicholas L.; Thaler, Jesse; Williams, Mike

    2017-09-01

    We propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, using subjet flavor tagging to test the heavy-quark splitting functions of QCD. For subjets containing a J /ψ or ϒ , this declustering technique can also help probe the mechanism for quarkonium production. The second strategy is aimed at isolating heavy-flavor production from gluon splitting. Here, we introduce a new FlavorCone algorithm, which smoothly interpolates from well-separated heavy-quark jets to the gluon-splitting regime where jets overlap. Because of its excellent ability to identify charm and beauty hadrons, the LHCb detector is ideally suited to pursue these strategies, though similar measurements should also be possible at ATLAS and CMS. Together, these SoftDrop and FlavorCone studies should clarify a number of aspects of heavy-flavor physics at colliders, and provide crucial information needed to improve heavy-flavor modeling in parton-shower generators.

  2. Performance of the MAGIC stereo system obtained with Crab Nebula data

    CERN Document Server

    Aleksić, J; Antonelli, L A; Antoranz, P; Asensio, M; Backes, M; Barrio, J A; Bastieri, D; González, J Becerra; Bednarek, W; Berdyugin, A; Berger, K; Bernardini, E; Biland, A; Blanch, O; Bock, R K; Boller, A; Bonnoli, G; Tridon, D Borla; Braun, I; Bretz, T; Cañellas, A; Carmona, E; Carosi, A; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Cossio, L; Covino, S; Dazzi, F; De Angelis, A; De Caneva, G; del Pozo, E De Cea; De Lotto, B; Mendez, C Delgado; Ortega, A Diago; Doert, M; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Eisenacher, D; Elsaesser, D; Ferenc, D; Fonseca, M V; Font, L; Fruck, C; López, R J García; Garczarczyk, M; Garrido, D; Giavitto, G; Godinović, N; Hadasch, D; Häfner, D; Herrero, A; Hildebrand, D; Höhne-Mönch, D; Hose, J; Hrupec, D; Jogler, T; Kellermann, H; Klepser, S; Krähenbühl, T; Krause, J; Kushida, J; La Barbera, A; Lelas, D; Leonardo, E; Lindfors, E; Lombardi, S; López, M; López-Oramas, A; Lorenz, E; Makariev, M; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Marcote, B; Mariotti, M; Martínez, M; Mazin, D; Meucci, M; Miranda, J M; Mirzoyan, R; Moldón, J; Moralejo, A; Munar-Adrover, P; Nieto, D; Nilsson, K; Orito, R; Oya, I; Paneque, D; Paoletti, R; Pardo, S; Paredes, J M; Partini, S; Perez-Torres, M A; Persic, M; Peruzzo, L; Pilia, M; Pochon, J; Prada, F; Moroni, P G Prada; Prandini, E; Gimenez, I Puerto; Puljak, I; Reichardt, I; Reinthal, R; Rhode, W; Ribó, M; Rico, J; Rügamer, S; Saggion, A; Saito, K; Saito, T Y; Salvati, M; Satalecka, K; Scalzotto, V; Scapin, V; Schultz, C; Schweizer, T; Shayduk, M; Shore, S N; Sillanpää, A; Sitarek, J; Snidaric, I; Sobczynska, D; Spanier, F; Spiro, S; Stamatescu, V; Stamerra, A; Steinke, B; Storz, J; Strah, N; Surić, T; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzić, T; Tescaro, D; Teshima, M; Tibolla, O; Torres, D F; Treves, A; Uellenbeck, M; Vankov, H; Vogler, P; Wagner, R M; Weitzel, Q; Zabalza, V; Zandanel, F; Zanin, R

    2011-01-01

    MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma. Since autumn 2009 both telescopes have been working together in stereoscopic mode, providing a significant improvement with respect to the previous single-telescope observations. We use observations of the Crab Nebula taken at low zenith angles to assess the performance of the MAGIC stereo system. The trigger threshold of the MAGIC telescopes is 50-60 GeV. Advanced stereo analysis techniques allow MAGIC to achieve a sensitivity as good as (0.76 +/- 0.03)% of the Crab Nebula flux in 50 h of observations above 290 GeV. The angular resolution at those energies is better than ~0.07 degree. We also perform a detailed study of possible systematic effects which may influence the analysis of the data taken with the MAGIC telescopes.

  3. Performance of the MAGIC stereo system obtained with Crab Nebula data

    Science.gov (United States)

    Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.; Antoranz, P.; Asensio, M.; Backes, M.; Barrio, J. A.; Bastieri, D.; Becerra González, J.; Bednarek, W.; Berdyugin, A.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Boller, A.; Bonnoli, G.; Borla Tridon, D.; Braun, I.; Bretz, T.; Cañellas, A.; Carmona, E.; Carosi, A.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Cossio, L.; Covino, S.; Dazzi, F.; de Angelis, A.; de Caneva, G.; de Cea Del Pozo, E.; de Lotto, B.; Delgado Mendez, C.; Diago Ortega, A.; Doert, M.; Domínguez, A.; Dominis Prester, D.; Dorner, D.; Doro, M.; Elsaesser, D.; Ferenc, D.; Fonseca, M. V.; Font, L.; Fruck, C.; García López, R. J.; Garczarczyk, M.; Garrido, D.; Giavitto, G.; Godinović, N.; Hadasch, D.; Häfner, D.; Herrero, A.; Hildebrand, D.; Höhne-Mönch, D.; Hose, J.; Hrupec, D.; Huber, B.; Jogler, T.; Kellermann, H.; Klepser, S.; Krähenbühl, T.; Krause, J.; La Barbera, A.; Lelas, D.; Leonardo, E.; Lindfors, E.; Lombardi, S.; López, M.; López-Oramas, A.; Lorenz, E.; Makariev, M.; Maneva, G.; Mankuzhiyil, N.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Meucci, M.; Miranda, J. M.; Mirzoyan, R.; Miyamoto, H.; Moldón, J.; Moralejo, A.; Munar-Adrover, P.; Nieto, D.; Nilsson, K.; Orito, R.; Oya, I.; Paneque, D.; Paoletti, R.; Pardo, S.; Paredes, J. M.; Partini, S.; Pasanen, M.; Pauss, F.; Perez-Torres, M. A.; Persic, M.; Peruzzo, L.; Pilia, M.; Pochon, J.; Prada, F.; Prada Moroni, P. G.; Prandini, E.; Puljak, I.; Reichardt, I.; Reinthal, R.; Rhode, W.; Ribó, M.; Rico, J.; Rügamer, S.; Saggion, A.; Saito, K.; Saito, T. Y.; Salvati, M.; Satalecka, K.; Scalzotto, V.; Scapin, V.; Schultz, C.; Schweizer, T.; Shayduk, M.; Shore, S. N.; Sillanpää, A.; Sitarek, J.; Snidaric, I.; Sobczynska, D.; Spanier, F.; Spiro, S.; Stamatescu, V.; Stamerra, A.; Steinke, B.; Storz, J.; Strah, N.; Surić, T.; Takalo, L.; Takami, H.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Tescaro, D.; Teshima, M.; Tibolla, O.; Torres, D. F.; Treves, A.; Uellenbeck, M.; Vankov, H.; Vogler, P.; Wagner, R. M.; Weitzel, Q.; Zabalza, V.; Zandanel, F.; Zanin, R.

    2012-02-01

    MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma. Since autumn 2009 both telescopes have been working together in stereoscopic mode, providing a significant improvement with respect to the previous single-telescope observations. We use observations of the Crab Nebula taken at low zenith angles to assess the performance of the MAGIC stereo system. The trigger threshold of the MAGIC telescopes is 50 - 60 GeV. Advanced stereo analysis techniques allow MAGIC to achieve a sensitivity as good as (0.76 ± 0.03)% of the Crab Nebula flux in 50 h of observations above 290 GeV. The angular resolution at those energies is better than ˜0.07°. We also perform a detailed study of possible systematic effects which may influence the analysis of the data taken with the MAGIC telescopes.

  4. Parallel Worlds: Magical Practice and Cosmology among Moderns Witches in Denmark

    DEFF Research Database (Denmark)

    Steno, Anne Mia

    2013-01-01

    The purpose of the present article is to make a contribution to an understanding of what it means to be a witch in Denmark today. The article thus reviews the extent of magical circles in Denmark and highlights special characteristics of the modern witch. The magical practice of witches is elucid......The purpose of the present article is to make a contribution to an understanding of what it means to be a witch in Denmark today. The article thus reviews the extent of magical circles in Denmark and highlights special characteristics of the modern witch. The magical practice of witches...... practice are overlooked if the analysis does not include the above questions and approach, and it underlines the importance of physicality in the magical practice....

  5. SU-E-T-102: Determination of Dose Distributions and Water-Equivalence of MAGIC-F Polymer Gel for 60Co and 192Ir Brachytherapy Sources

    Energy Technology Data Exchange (ETDEWEB)

    Quevedo, A; Nicolucci, P [University of Sao Paulo, Ribeirao Preto, SP (Brazil)

    2014-06-01

    Purpose: Analyse the water-equivalence of MAGIC-f polymer gel for {sup 60}Co and {sup 192}Ir clinical brachytherapy sources, through dose distributions simulated with PENELOPE Monte Carlo code. Methods: The real geometry of {sup 60} (BEBIG, modelo Co0.A86) and {sup 192}192Ir (Varian, model GammaMed Plus) clinical brachytherapy sources were modelled on PENELOPE Monte Carlo simulation code. The most probable emission lines of photons were used for both sources: 17 emission lines for {sup 192}Ir and 12 lines for {sup 60}. The dose distributions were obtained in a cubic water or gel homogeneous phantom (30 × 30 × 30 cm{sup 3}), with the source positioned in the middle of the phantom. In all cases the number of simulation showers remained constant at 10{sup 9} particles. A specific material for gel was constructed in PENELOPE using weight fraction components of MAGIC-f: wH = 0,1062, wC = 0,0751, wN = 0,0139, wO = 0,8021, wS = 2,58×10{sup −6} e wCu = 5,08 × 10{sup −6}. The voxel size in the dose distributions was 0.6 mm. Dose distribution maps on the longitudinal and radial direction through the centre of the source were used to analyse the water-equivalence of MAGIC-f. Results: For the {sup 60} source, the maximum diferences in relative doses obtained in the gel and water were 0,65% and 1,90%, for radial and longitudinal direction, respectively. For {sup 192}Ir, the maximum difereces in relative doses were 0,30% and 1,05%, for radial and longitudinal direction, respectively. The materials equivalence can also be verified through the effective atomic number and density of each material: Zef-MAGIC-f = 7,07 e .MAGIC-f = 1,060 g/cm{sup 3} and Zef-water = 7,22. Conclusion: The results showed that MAGIC-f is water equivalent, consequently being suitable to simulate soft tissue, for Cobalt and Iridium energies. Hence, gel can be used as a dosimeter in clinical applications. Further investigation to its use in a clinical protocol is needed.

  6. Campground marketing: the heavy-half strategy

    Science.gov (United States)

    Wilbur F. LaPage

    1969-01-01

    When we arrayed camping frequencies in order from the lowest to the highest number of days spent camping per year we found that half of the campers do much more than half of the camping. Campers in this heavy half consistently camp more, year after year, and are increasing their annual participation as well. Heavy-half campers have larger investments in camping...

  7. Recent heavy flavor results from STAR

    NARCIS (Netherlands)

    Mischke, A.

    2007-01-01

    We report on recent heavy flavor measurements from the STAR experiment at RHIC[1]. The measured charm cross section in heavy-ion collisions scales with the number of binary collisions, which is an indication for exclusive charm production in the initial state of the collision. The observed strong su

  8. Lattice investigation of heavy meson interactions

    CERN Document Server

    Wagenbach, Björn; Wagner, Marc

    2014-01-01

    We report on a lattice investigation of heavy meson interactions and of tetraquark candidates with two very heavy quarks. These two quarks are treated in the static limit, while the other two are up, down, strange or charm quarks of finite mass. Various isospin, spin and parity quantum numbers are considered.

  9. Lattice investigation of heavy meson interactions

    Science.gov (United States)

    Wagenbach, Björn; Bicudo, Pedro; Wagner, Marc

    2015-04-01

    We report on a lattice investigation of heavy meson interactions and of tetraquark candidates with two very heavy quarks. These two quarks are treated in the static limit, while the other two are up, down, strange or charm quarks of finite mass. Various isospin, spin and parity quantum numbers are considered.

  10. Atmospheric Monitoring at the Site of the MAGIC Telescopes

    Directory of Open Access Journals (Sweden)

    Will Martin

    2017-01-01

    Full Text Available The MAGIC telescopes in La Palma, Canary Islands, measure the Cherenkov light emitted by gamma ray-induced extended air showers in the atmosphere. The good knowledge of the atmospheric parameters is important, both for the correct and safe operations of the telescopes, but also for subsequent data analysis. A weather station measures the state variables of the atmosphere, temperature, humidity and wind, an elastic Lidar system and an infrared pyrometer determine the optical transmission of the atmosphere. Using an AllSky camera, the cloud cover can be estimated. The measured values are completed by data from global atmospheric models based on numeric weather forecasts.

  11. Enhancing Pseudo-Telepathy in the Magic Square Game

    OpenAIRE

    2013-01-01

    We study the possibility of reversing an action of a quantum channel. Our principal objective is to find a specific channel that reverses as accurately as possible an action of a given quantum channel. To achieve this goal we use semidefinite programming. We show the benefits of our method using the quantum pseudo-telepathy Magic Square game with noise. Our strategy is to move the pseudo-telepathy region to higher noise values. We show that it is possible to reverse the action of a noise chan...

  12. The MAGIC of SSC and how it affects LHC

    CERN Document Server

    Mavromatos, Nick E

    2009-01-01

    We discuss the phenomenology of Supercritical String Cosmology (SSC) in the context of Dark Matter constraints on supersymmetric particle physics models at LHC. We also link our results with recent findings of the MAGIC, H.E.S.S. and Fermi Telescopes on delayed arrival of highly energetic photons from the distant Galaxies and GRBs. The link is provided by a concrete model of space-time foam in (supercritical) string theory, involving space-time defects and their interaction with matter in a brane world scenario.

  13. Myths, magic and reality in nursing ethics: a personal perspective.

    Science.gov (United States)

    Tschudin, V

    1998-01-01

    Ethics, especially in nursing, tends to be surrounded by myths and ideas that have more in common with magic than reality. This article argues from quotes of two medieval men, Thomas Aquinas and Meister Eckhart, that ethical behaviour among nurses is not something difficult or far-fetched, but something immediate, everyday, and often very simple. The more weighty ethical dilemmas are not diminished by this. Aspects of justice, compassion and courage are discussed from the point of view of relationships with clients and colleagues, and the need for (helpful) myths is stressed.

  14. Graceful, harmonious and magic type labelings relations and techniques

    CERN Document Server

    López, Susana C

    2017-01-01

    Aimed toward upper undergraduate and graduate students in mathematics, this book examines the foremost forms of graph labelings including magic, harmonious, and graceful labelings. An overview of basic graph theory concepts and notation is provided along with the origins of graph labeling. Common methods and techniques are presented introducing readers to links between graph labels. A variety of useful techniques are presented to analyze and understand properties of graph labelings. The classical results integrated with new techniques, complete proofs, numerous exercises, and a variety of open problems, will provide readers with a solid understanding of graph labelings.

  15. Magic-angle spinning NMR of cold samples.

    Science.gov (United States)

    Concistrè, Maria; Johannessen, Ole G; Carignani, Elisa; Geppi, Marco; Levitt, Malcolm H

    2013-09-17

    Magic-angle-spinning solid-state NMR provides site-resolved structural and chemical information about molecules that complements many other physical techniques. Recent technical advances have made it possible to perform magic-angle-spinning NMR experiments at low temperatures, allowing researchers to trap reaction intermediates and to perform site-resolved studies of low-temperature physical phenomena such as quantum rotations, quantum tunneling, ortho-para conversion between spin isomers, and superconductivity. In examining biological molecules, the improved sensitivity provided by cryogenic NMR facilitates the study of protein assembly or membrane proteins. The combination of low-temperatures with dynamic nuclear polarization has the potential to boost sensitivity even further. Many research groups, including ours, have addressed the technical challenges and developed hardware for magic-angle-spinning of samples cooled down to a few tens of degrees Kelvin. In this Account, we briefly describe these hardware developments and review several recent activities of our group which involve low-temperature magic-angle-spinning NMR. Low-temperature operation allows us to trap intermediates that cannot be studied under ambient conditions by NMR because of their short lifetime. We have used low-temperature NMR to study the electronic structure of bathorhodopsin, the primary photoproduct of the light-sensitive membrane protein, rhodopsin. This project used a custom-built NMR probe that allows low-temperature NMR in the presence of illumination (the image shows the illuminated spinner module). We have also used this technique to study the behavior of molecules within a restricted environment. Small-molecule endofullerenes are interesting molecular systems in which molecular rotors are confined to a well-insulated, well-defined, and highly symmetric environment. We discuss how cryogenic solid state NMR can give information on the dynamics of ortho-water confined in a fullerene

  16. Mathematical card magic fifty-two new effects

    CERN Document Server

    Mulcahy, Colm

    2013-01-01

    Mathematical card effects offer both beginning and experienced magicians an opportunity to entertain with a minimum of props. Featuring mostly original creations, Mathematical Card Magic: Fifty-Two New Effects presents an entertaining look at new mathematically based card tricks. Each chapter contains four card effects, generally starting with simple applications of a particular mathematical principle and ending with more complex ones. Practice a handful of the introductory effects and, in no time, you'll establish your reputation as a ""mathemagician."" Delve a little deeper into each chapter

  17. Magic World of Mathematics Has Found “common face”

    Directory of Open Access Journals (Sweden)

    Kazaryan V. P.

    2013-01-01

    Full Text Available This article examines historical dynamics of social and cultural status of mathematics. It is proved that the activities of modern mathematics in the ensuing wide variety of mathematical modeling of processes merged with the sociocultural practices as a result of the development of computer technology. Mathematics itself thus had a new sociocultural status, under which began to carry out the function of intellectual services. It can be noted that practically oriented part of modern mathematics in the last half-century has lost an aura of «magic», which is always accompanied by the image of mathematics. Mathematics and thus gained his «earthly face».

  18. Enhancing pseudo-telepathy in the magic square game.

    Science.gov (United States)

    Pawela, Lukasz; Gawron, Piotr; Puchała, Zbigniew; Sładkowski, Jan

    2013-01-01

    We study the possibility of reversing an action of a quantum channel. Our principal objective is to find a specific channel that reverses as accurately as possible an action of a given quantum channel. To achieve this goal we use semidefinite programming. We show the benefits of our method using the quantum pseudo-telepathy Magic Square game with noise. Our strategy is to move the pseudo-telepathy region to higher noise values. We show that it is possible to reverse the action of a noise channel using semidefinite programming.

  19. Enhancing pseudo-telepathy in the magic square game.

    Directory of Open Access Journals (Sweden)

    Lukasz Pawela

    Full Text Available We study the possibility of reversing an action of a quantum channel. Our principal objective is to find a specific channel that reverses as accurately as possible an action of a given quantum channel. To achieve this goal we use semidefinite programming. We show the benefits of our method using the quantum pseudo-telepathy Magic Square game with noise. Our strategy is to move the pseudo-telepathy region to higher noise values. We show that it is possible to reverse the action of a noise channel using semidefinite programming.

  20. Magical realism: a cultural intervention for traumatized Hispanic children.

    Science.gov (United States)

    De Rios, M D

    1997-01-01

    A case study is presented of two Spanish-speaking immigrant children who were run over in an automobile accident and hospitalized, to describe a culturally congruent play-therapy technique. Drawing on the work of Pynoos and Nader, the author argues for an anthropological approach in play therapy to create hyperaroused states for the traumatized child and to use cultural super heroes-what is termed "magical realism." Such an approach can be used with Latin American traumatized children as well as with children from other Third World countries to provide a culturally appropriate intervention to treat the psychological sequelae of trauma.

  1. Is Four the Magic Number? Number of Books Read in a Month and Young People's Wider Reading Behaviour

    Science.gov (United States)

    Clark, Christina; Poulton, Lizzie

    2011-01-01

    Earlier this year Michael Gove, Secretary of State for Education, announced that British children were not reading enough and should, he believed, reading 50 books a year. This idea had come from a charter school he had visited in the US and was met with some degree of scepticism by authors and professionals who questioned whether a focus on…

  2. Beta Decays of Isotones with Neutron Magic Number of N=126 and R-process Nucleosynthesis

    CERN Document Server

    Suzuki, Toshio; Kajino, Toshitaka; Otsuka, Takaharu

    2011-01-01

    Beta decays of the isotones with N=126 are studied by shell model calculations taking into account both the Gamow-Teller (GT) and first-forbidden (FF) transitions. The FF transitions are found to be important to reduce the half-lives, by nearly twice to several times, from those by the GT contributions only. Possible implications of the short half-lives of the waiting point nuclei on the r-process nucleosynthesis during the supernova explosions are discussed. A slight shift of the third peak of the element abundances in the r-process toward higher mass region is found.

  3. From the CERN web: gravitational waves, magic numbers, innovation 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...     Simulation of two massive black holes merging, based on data collected from the LIGO collaboration on 14 September 2015. (Image: LIGO Collaboration © 2016 SXS) The hills are alive, with the sound of gravitational waves 12 February – ATLAS Collaboration It’s 16:00 CET at CERN and I’m sitting in the CERN Main Auditorium. The room is buzzing with excitement, not unlike the day in 2012 when the Higgs discovery was announced in this very room. But today the announcement is not from CERN, but the LIGO experiment which is spread across two continents. Many expect the announcement to be about a discovery of gravitational waves, as predicted by Einstein in 1916, but which have remained elusive until today… Continue to read…   The laser launch st...

  4. Fusion process of Lennard-Jones clusters: global minima and magic numbers formation

    DEFF Research Database (Denmark)

    Solov'yov, Ilia; Solov'yov, Andrey V.; Greiner, Walter

    2004-01-01

    We present a new theoretical framework for modeling the fusion process of Lennard–Jones (LJ) clusters. Starting from the initial tetrahedral cluster configuration, adding new atoms to the system and absorbing its energy at each step, we find cluster growing paths up to the cluster size of 150 atoms...

  5. Shell Evolution Study for New Magic Number N=32 via Iso chronous Mass Sp ectrometry

    Institute of Scientific and Technical Information of China (English)

    徐星; 付超义; 葛壮; 黄文嘉; 蓝乙华; 李宏福; 刘俊豪; 孙铭泽; 邢元明; 颜鑫亮; 曾奇; 王猛; 张鹏; 肖国青; 詹文龙; 张玉虎; 帅鹏; 徐瑚珊; 涂小林; 周小红; 陈瑞九; 陈相成

    2016-01-01

    Recent results and progress of mass measurements of neutron-rich nuclei utilizing Isochronous Mass Spectrometry (IMS) based on the HIRFL-CSR complex at Lanzhou are reported. The nuclei of interest were produced through projectile fragmentation of primary 86Kr ions at a realistic energy of 460.65 MeV/u. After in-flight separation by the fragment separator RIBLL2, the fragments were injected and stored in the experimental storage ring CSRe, and their masses were determined from measurements of their revolution times. The re-determined masses were compared and evaluated with other mass measurements, and the impact of these evaluated masses on the shell evolution study is discussed.

  6. Fusion process of Lennard-Jones clusters: global minima and magic numbers formation

    DEFF Research Database (Denmark)

    Solov'yov, Ilia; Solov'yov, Andrey V.; Greiner, Walter

    2004-01-01

    We present a new theoretical framework for modeling the fusion process of Lennard–Jones (LJ) clusters. Starting from the initial tetrahedral cluster configuration, adding new atoms to the system and absorbing its energy at each step, we find cluster growing paths up to the cluster size of 150 atoms...

  7. Heavy metal jako subkultura

    OpenAIRE

    KOUTNÁ, Daniela

    2016-01-01

    This bachelor thesis deals with heavy metal subculture. Its aim is to introduce the most important branches and to show broadness of heavy metal. This bachelor thesis describes development and history, briefly shows Czech heavy metal history alongside with the biggest and most popular Czech heavy metal festivals. It shows the most dressing concerns of society against this style.

  8. Ab-initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei - I. Formalism at second order with a two-nucleon interaction

    CERN Document Server

    Soma, V; Barbieri, C

    2011-01-01

    An ab-initio calculation scheme for finite nuclei based on self-consistent Green's functions in the Gorkov formalism is developed. It aims at describing properties of doubly-magic and semi-magic nuclei employing state-of-the-art microscopic nuclear interactions and explicitly treating pairing correlations through the breaking of U(1) symmetry associated with particle number conservation. The present paper introduces the formalism, necessary to undertake applications at (self-consistent) second-order using two-nucleon interactions, in a detailed and self-contained fashion. First applications of such a scheme will be reported soon in a forthcoming publication. Future works will extend the present scheme to include three-nucleon interactions and implement more advanced truncation schemes.

  9. Magic moment? Maternal marriage for children born out of wedlock.

    Science.gov (United States)

    Gibson-Davis, Christina

    2014-08-01

    To test the existence of the "magic moment" for parental marriage immediately post-birth and to inform policies that preferentially encourage biological over step parent marriage, this study estimates the incidence and stability of maternal marriage for children born out of wedlock. Data came from the National Survey of Family Growth on 5,255 children born non maritally. By age 15, 29 % of children born non maritally experienced a biological-father marriage, and 36 % experienced a stepfather marriage. Stepfather marriages occurred much later in a child's life-one-half occurred after the child turned age 7-and had one-third higher odds of dissolution. Children born to black mothers had qualitatively different maternal marriage experiences than children born to white or Hispanic mothers, with less biological-parent marriage and higher incidences of divorce. Findings support the existence of the magic moment and demonstrate that biological marriages were more enduring than stepfather marriages. Yet relatively few children born out of wedlock experienced stable, biological-parent marriages as envisioned by marriage promotion programs.

  10. New improved Sum-Trigger system for the MAGIC telescopes

    CERN Document Server

    Haefner, Dennis; Dazzi, Francesco; Corti, Daniele

    2011-01-01

    In 2007 a prototype of a new analog Sum-Trigger was installed in the MAGIC I telescope, which lowered the trigger threshold from 55 GeV to 25 GeV and led to the detection of pulsed gamma radiation from the Crab pulsar. To eliminate the need for manual tuning and maintenance demanded by that first prototype, a new setup with fully automatic calibration was designed recently. The key element of the new circuit is a novel, continuously variable analog delay line that enables the temporal equalization of the signals from the camera photo sensors, which is crucial for the efficient detection of low-energy showers. A further improvement is the much larger trigger area consisting of a fully revised configuration of overlapping summing patches. The new system will be installed on both telescopes, MAGIC I and II, enabling stereo observation in Sum-Trigger mode. This will significantly improve the sensitivity in the very low energy regime of 20 to 100 GeV, which is essential in particular for detailed pulsar studies, a...

  11. Magically Deceptive Biological Motion — The French Drop Sleight

    Directory of Open Access Journals (Sweden)

    Flip ePhillips

    2015-04-01

    Full Text Available Intentional deception, as is common in the performance of magic tricks, can provide valuable insight into the mechanisms of perception and action. Much of the recent investigations into this form of deception revolve around the attention of the observer. Here, we present experiments designed to investigate the contributions of the performer to the act of deception. An experienced magician and a naïve novice performed a classic sleight known as the French Drop. Video recordings of the performance were used to measure the quality of the deception --- e.g. if a non-magician observer could discriminate instances where the sleight was performed (a deceptive performance from those where it was not (a veridical performace. During the performance we recorded the trajectory of the hands and measured muscle activity via EMG to help understand the biomechanical mechanisms of this deception. We show that expertise plays a major role in the quality of the deception and that there are significant variations in the motion and muscular behaviors between successful and unsuccessful performances. Smooth, minimal movements with an exaggerated faux-transfer of muscular tension were characteristic of better deception. This finding is consistent with anecdotal reports and the magic performance literature.

  12. Latest MAGIC discoveries pushing redshift boundaries in VHE Astrophysics

    CERN Document Server

    Manganaro, M; Nievas, M; Sitarek, J; Tavecchio, F; Buson, S; Prester, D Dominis; Domínguez, A; Lindfors, E; Mazin, D; Moralejo, A; Stamerra, A

    2016-01-01

    The search for detection of gamma-rays from distant AGNs by Imaging Atmospheric Cherenkov Telescopes (IACTs) is challenging at high redshifts, not only because of lower flux due to the distance of the source, but also due to the consequent absorption of gamma-rays by the extragalactic background light (EBL). Before the MAGIC discoveries reported in this work, the farthest source ever detected in the VHE domain was the blazar PKS 1424+240, at z>0.6. MAGIC, a system of two 17 m of diameter IACTs located in the Canary island of La Palma, has been able to go beyond that limit and push the boundaries for VHE detection to redshifts z~ 1. The two sources detected and analyzed, the blazar QSO B0218+357 and the FSRQ PKS 1441+25 are located at redshift z=0.944 and z=0.939 respectively. QSO B0218+357 is also the first gravitational lensed blazar ever detected in VHE. The activity, triggered by Fermi-LAT in high energy gamma-rays, was followed up by other instruments, such as the KVA telescope in the optical band and the...

  13. Some contributions of MAGIC to the physics ofcosmic rays

    Directory of Open Access Journals (Sweden)

    Gozzini S.R.

    2013-06-01

    Full Text Available Cosmic ray interactions can be investigated indirectly in γ ray astronomy, with the observation of spectral and morphological features of certain classes of sources. MAGIC is a stereoscopic system of two γ ray telescopes, located at La Palma (Canaries, with access to the energy window between 50 GeV and 30 TeV. Sources of high relevance for the study of very high energy hadronic interactions are active galactic nuclei, as blazars and radio galaxies. MAGIC has detectedabout fifty such extragalactic objects; we will present some where theemission is explained with accelerated hadrons in interaction with ambient photons. We will also mention cosmic ray acceleration in galaxy clusters. Other than that, hadron-hadron interactions are supposed to take place in some supernova remnants in interaction with surrounding molecular clouds; we will show some results, in connection with cosmic rays of galactic origin. Finally, about other possible components, wewill mention the measurement of the diffuse electron and positron spectrum. Trustingly, the close connection between particle physics and astrophysics will contribute in future years to many new interesting observations.

  14. MAGIC upper limits on the GRB 090102 afterglow

    CERN Document Server

    Aleksić, J; Antonelli, L A; Antoranz, P; Babic, A; Bangale, P; de Almeida, U Barres; Barrio, J A; González, J Becerra; Bednarek, W; Berger, K; Bernardini, E; Biland, A; Blanch, O; Bock, R K; Bonnefoy, S; Bonnoli, G; Borracci, F; Bretz, T; Carmona, E; Carosi, A; Fidalgo, D Carreto; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Covino, S; Da Vela, P; Dazzi, F; De Angelis, A; De Caneva, G; De Lotto, B; Mendez, C Delgado; Doert, M; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Einecke, S; Eisenacher, D; Elsaesser, D; Farina, E; Ferenc, D; Fonseca, M V; Font, L; Frantzen, K; Fruck, C; López, R J García; Garczarczyk, M; Terrats, D Garrido; Gaug, M; Giavitto, G; Godinović, N; Muñoz, A González; Gozzini, S R; Hadasch, D; Hayashida, M; Herrero, A; Hildebrand, D; Hose, J; Hrupec, D; Idec, W; Kadenius, V; Kellermann, H; Knoetig, M L; Kodani, K; Konno, Y; Krause, J; Kubo, H; Kushida, J; La Barbera, A; Lelas, D; Lewandowska, N; Lindfors, E; Lombardi, S; López, M; López-Coto, R; López-Oramas, A; Lorenz, E; Lozano, I; Makariev, M; Mallot, K; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Marcote, B; Mariotti, M; Martínez, M; Mazin, D; Menzel, U; Meucci, M; Miranda, J M; Mirzoyan, R; Moralejo, A; Munar-Adrover, P; Nakajima, D; Niedzwiecki, A; Nilsson, K; Nishijima, K; Nowak, N; Orito, R; Overkemping, A; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, J M; Paredes-Fortuny, X; Partini, S; Persic, M; Prada, F; Moroni, P G Prada; Prandini, E; Preziuso, S; Puljak, I; Reinthal, R; Rhode, W; Ribó, M; Rico, J; Garcia, J Rodriguez; Rügamer, S; Saggion, A; Saito, T; Saito, K; Salvati, M; Satalecka, K; Scalzotto, V; Scapin, V; Schultz, C; Schweizer, T; Shore, S N; Sillanpää, A; Sitarek, J; Snidaric, I; Sobczynska, D; Spanier, F; Stamatescu, V; Stamerra, A; Steinbring, T; Storz, J; Sun, S; Surić, T; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzić, T; Tescaro, D; Teshima, M; Thaele, J; Tibolla, O; Torres, D F; Toyama, T; Treves, A; Vogler, P; Wagner, R M; Zandanel, F; Zanin, R; Bouvier, A; Tajima, H; Longo, F

    2013-01-01

    Indications of a GeV component in the emission from GRBs are known since the EGRET observations during the 1990's and they have been confirmed by the data of the Fermi satellite. These results have, however, shown that our understanding of GRB physics is still unsatisfactory. The new generation of Cherenkov observatories and in particular the MAGIC telescope, allow for the first time the possibility to extend the measurement of GRBs from several tens up to hundreds of GeV energy range. Both leptonic and hadronic processes have been suggested to explain the possible GeV/TeV counterpart of GRBs. Observations with ground-based telescopes of very high energy photons (E>30 GeV) from these sources are going to play a key role in discriminating among the different proposed emission mechanisms, which are barely distinguishable at lower energies. MAGIC telescope observations of the GRB 090102 (z=1.547) field and Fermi Large Area Telescope (LAT) data in the same time interval are analysed to derive upper limits of the ...

  15. The readout system of the MAGIC-II Cherenkov Telescope

    CERN Document Server

    Tescaro, D; Barcelo, M; Bitossi, M; Cortina, J; Fras, M; Hadasch, D; Illa, J M; Martínez, M; Mazin, D; Paoletti, R; Pegna, R

    2009-01-01

    In this contribution we describe the hardware, firmware and software components of the readout system of the MAGIC-II Cherenkov telescope on the Canary island La Palma. The PMT analog signals are transmitted by means of optical fibers from the MAGIC-II camera to the 80 m away counting house where they are routed to the new high bandwidth and fully programmable receiver boards (MONSTER), which convert back the signals from optical to electrical ones. Then the signals are split, one half provide the input signals for the level ONE trigger system while the other half is sent to the digitizing units. The fast Cherenkov pulses are sampled by low-power Domino Ring Sampler chips (DRS2) and temporarily stored in an array of 1024 capacitors. Signals are sampled at the ultra-fast speed of 2 GSample/s, which allows a very precise measurement of the signal arrival times in all pixels. They are then digitized with 12-bit resolution by an external ADC readout at 40 MHz speed. The Domino samplers are integrated in the newly...

  16. Magic and tune-out wavelengths for atomic francium

    CERN Document Server

    Dammalapati, U; Sakemi, Y

    2016-01-01

    The frequency dependent polarizabilities of the francium atom are calculated from the available data of energy levels and transition rates. Magic wavelengths for the state insensitive optical dipole trapping are identified from the calculated light shifts of the $7s~^2S_{1/2}$, $7p~^2P_{1/2, 3/2}$ and $8s~^{2}S_{1/2}$ levels of the $7s~^{2}S_{1/2}-7p~^{2}P_{1/2,3/2}$ and $7s~^{2}S_{1/2}-8s~^{2}S_{1/2}$ transitions, respectively. Wavelengths in the ultraviolet, visible and near infrared region is identified that are suitable for cooling and trapping. Magic wavelengths between 600-700~nm and 700-1000~nm region, which are blue and red detuned with the $7s-7p$ and $7s-8s$ transitions are feasible to implement as lasers with sufficient power are available. In addition, we calculated the tune-out wavelengths where the ac polarizability of the ground $7s~^{2}S_{1/2}$ state in francium is zero. These results are beneficial as laser cooled and trapped francium has been in use for fundamental symmetry investigations li...

  17. A MAGIC population-based genome-wide association study reveals functional association of GhRBB1_A07 gene with superior fiber quality in cotton.

    Science.gov (United States)

    Islam, Md Sariful; Thyssen, Gregory N; Jenkins, Johnie N; Zeng, Linghe; Delhom, Christopher D; McCarty, Jack C; Deng, Dewayne D; Hinchliffe, Doug J; Jones, Don C; Fang, David D

    2016-11-09

    Cotton supplies a great majority of natural fiber for the global textile industry. The negative correlation between yield and fiber quality has hindered breeders' ability to improve these traits simultaneously. A multi-parent advanced generation inter-cross (MAGIC) population developed through random-mating of multiple diverse parents has the ability to break this negative correlation. Genotyping-by-sequencing (GBS) is a method that can rapidly identify and genotype a large number of single nucleotide polymorphisms (SNP). Genotyping a MAGIC population using GBS technologies will enable us to identify marker-trait associations with high resolution. An Upland cotton MAGIC population was developed through random-mating of 11 diverse cultivars for five generations. In this study, fiber quality data obtained from four environments and 6071 SNP markers generated via GBS and 223 microsatellite markers of 547 recombinant inbred lines (RILs) of the MAGIC population were used to conduct a genome wide association study (GWAS). By employing a mixed linear model, GWAS enabled us to identify markers significantly associated with fiber quantitative trait loci (QTL). We identified and validated one QTL cluster associated with four fiber quality traits [short fiber content (SFC), strength (STR), length (UHM) and uniformity (UI)] on chromosome A07. We further identified candidate genes related to fiber quality attributes in this region. Gene expression and amino acid substitution analysis suggested that a regeneration of bulb biogenesis 1 (GhRBB1_A07) gene is a candidate for superior fiber quality in Upland cotton. The DNA marker CFBid0004 designed from an 18 bp deletion in the coding sequence of GhRBB1_A07 in Acala Ultima is associated with the improved fiber quality in the MAGIC RILs and 105 additional commercial Upland cotton cultivars. Using GBS and a MAGIC population enabled more precise fiber QTL mapping in Upland cotton. The fiber QTL and associated markers identified in

  18. On the use of ultracentrifugal devices for routine sample preparation in biomolecular magic-angle-spinning NMR.

    Science.gov (United States)

    Mandal, Abhishek; Boatz, Jennifer C; Wheeler, Travis B; van der Wel, Patrick C A

    2017-02-22

    A number of recent advances in the field of magic-angle-spinning (MAS) solid-state NMR have enabled its application to a range of biological systems of ever increasing complexity. To retain biological relevance, these samples are increasingly studied in a hydrated state. At the same time, experimental feasibility requires the sample preparation process to attain a high sample concentration within the final MAS rotor. We discuss these considerations, and how they have led to a number of different approaches to MAS NMR sample preparation. We describe our experience of how custom-made (or commercially available) ultracentrifugal devices can facilitate a simple, fast and reliable sample preparation process. A number of groups have since adopted such tools, in some cases to prepare samples for sedimentation-style MAS NMR experiments. Here we argue for a more widespread adoption of their use for routine MAS NMR sample preparation.

  19. An fMRI investigation of expectation violation in magic tricks.

    Science.gov (United States)

    Danek, Amory H; Öllinger, Michael; Fraps, Thomas; Grothe, Benedikt; Flanagin, Virginia L

    2015-01-01

    Magic tricks violate the expected causal relationships that form an implicit belief system about what is possible in the world around us. Observing a magic effect seemingly invalidates our implicit assumptions about what action causes which outcome. We aimed at identifying the neural correlates of such expectation violations by contrasting 24 video clips of magic tricks with 24 control clips in which the expected action-outcome relationship is upheld. Using fMRI, we measured the brain activity of 25 normal volunteers while they watched the clips in the scanner. Additionally, we measured the professional magician who had performed the magic tricks under the assumption that, in contrast to naïve observers, the magician himself would not perceive his own magic tricks as an expectation violation. As the main effect of magic - control clips in the normal sample, we found higher activity for magic in the head of the caudate nucleus (CN) bilaterally, the left inferior frontal gyrus and the left anterior insula. As expected, the magician's brain activity substantially differed from these results, with mainly parietal areas (supramarginal gyrus bilaterally) activated, supporting our hypothesis that he did not experience any expectation violation. These findings are in accordance with previous research that has implicated the head of the CN in processing changes in the contingency between action and outcome, even in the absence of reward or feedback.

  20. Spin dependence of heavy quark fragmentation

    Energy Technology Data Exchange (ETDEWEB)

    Cornet, Fernando [Departamento de Fisica Teorica y del Cosmos and Centro Anadaluz de Fisica de Particulas, Universidad de Granada, E-18071 Granada (Spain)], E-mail: cornet@ugr.es; Garcia Canal, Carlos A. [Departamento de Fisica, Universidad Nacional de La Plata, C.C. 67, La Plata (1900) (Argentina)

    2008-05-01

    We propose that the non-perturbative part of the fragmentation function describing the transition from a heavy quark to a heavy meson is proportional to the square of the produced meson wave function at the origin, taking into account hyperfine interactions. We analyze the effects of this proposal on the number of pseudoscalar mesons compared to the number of vector mesons produced and find a good agreement with experimental data. Finally, we discuss further experimental checks for our hypothesis.

  1. Relativistic heavy-ion collisions

    CERN Document Server

    Bhalerao, Rajeev S

    2014-01-01

    The field of relativistic heavy-ion collisions is introduced to the high-energy physics students with no prior knowledge in this area. The emphasis is on the two most important observables, namely the azimuthal collective flow and jet quenching, and on the role fluid dynamics plays in the interpretation of the data. Other important observables described briefly are constituent quark number scaling, ratios of particle abundances, strangeness enhancement, and sequential melting of heavy quarkonia. Comparison is made of some of the basic heavy-ion results obtained at LHC with those obtained at RHIC. Initial findings at LHC which seem to be in apparent conflict with the accumulated RHIC data are highlighted.

  2. MAGIC Collaboration: Contributions to the 31st International Cosmic Ray Conference (ICRC 2009)

    CERN Document Server

    Anderhub, H; Antoranz, P; Backes, M; Baixeras, C; Balestra, S; Barrio, J A; Bastieri, D; González, J Becerra; Becker, J K; Bednarek, W; Berger, K; Bernardini, E; Biland, A; Bock, R K; Bonnoli, G; Bordas, P; Tridon, D Borla; Bosch-Ramon, V; Bose, D; Braun, I; Bretz, T; Britzger, D; Camara, M; Carmona, E; Carosi, A; Colin, P; Commichau, S; Contreras, J L; Cortina, J; Costado, M T; Covino, S; Dazzi, F; De Angelis, A; del Pozo, E de Cea; Mendez, C Delgado; Reyes, R De los; De Lotto, B; De Maria, M; De Sabata, F; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Elsaesser, D; Errando, M; Ferenc, D; Fernández, E; Firpo, R; Fonseca, M V; Font, L; Galante, N; López, R J García; Garczarczyk, M; Gaug, M; Godinovic, N; Göbel, F; Hadasch, D; Herrero, A; Hildebrand, D; Höhne-Mönch, D; Hose, J; Hrupec, D; Hsu, C C; Jogler, T; Klepser, S; Kranich, D; La Barbera, A; Laille, A; Leonardo, E; Lindfors, E; Lombardi, S; Longo, F; López, M; Lorenz, E; Majumdar, P; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Mariotti, M; Martínez, M; Mazin, D; Meucci, M; Miranda, J M; Mirzoyan, R; Miyamoto, H; Moldón, J; Moles, M; Moralejo, A; Nieto, D; Nilsson, K; Ninkovic, J; Orito, R; Oya, I; Paoletti, R; Paredes, J M; Pasanen, M; Pascoli, D; Pauss, F; Pegna, R G; Pérez-Torres, M A; Persic, M; Peruzzo, L; Prada, F; Prandini, E; Puchades, N; Puljak, I; Reichardt, I; Rhode, W; Ribó, M; Rico, J; Rissi, M; Robert, A; Rügamer, S; Saggion, A; Saito, T Y; Salvati, M; Sánchez-Conde, M; Satalecka, K; Scalzotto, V; Scapin, V; Schweizer, T; Shayduk, M; Shore, S N; Sierpowska-Bartosik, A; Sillanpää, A; Sitarek, J; Sobczynska, D; Spanier, F; Spiro, S; Stamerra, A; Stark, L S; Suric, T; Takalo, L; Tavecchio, F; Temnikov, P; Tescaro, D; Teshima, M; Torres, D F; Turini, N; Vankov, H; Wagner, R M; Zabalza, V; Zandanel, F; Zanin, R; Zapatero, J

    2009-01-01

    Index entry listing the contributed papers of the MAGIC collaboration to the 31th International Cosmic Ray Conference (ICRC 2009), July 7-15 2009, \\L\\'od\\'z, Poland. The individual papers are sorted by subject: Overview and Highlight Papers; MAGIC-II Status and Components; Software and Analysis Techniques; Technical Developments; Scientific Results. This HTML document includes clickable links to the papers that exist on the astro-ph arXives. We hope that this will make it easy to access the MAGIC contributions in a systematic way.

  3. Magic Wavelength for Caesium Transition Line 6S1/2 -6P3/2

    Institute of Scientific and Technical Information of China (English)

    ZHENG Yu-Nan; ZHOU Xiao-Ji; CHEN Jing-Biao; CHEN Xu-Zong

    2006-01-01

    @@ We investigate the magic wavelengths of the trapping laser for 6S1/2 - 6P3/2 of the Cs atom in a region where the optical shift between two different states can be eliminated. For fine levels and linear polarized laser they are 930.4 nm and 937.2nm. The magic wavelengths range from 927. 7nm to 945.0nm for circle-polarized perturbing laser. Effects of nuclear spin, the hyper-fine Zeeman levels, and the polarization of the light, which generate different magic wavelengths, are further discussed.

  4. Mouth and genital ulcers with inflamed cartilage (MAGIC) syndrome complicated by aneurysmal aortitis.

    Science.gov (United States)

    Ng, Chin Soon; Hogan, Patrick; McKenzie, Scott; Gibbs, Harry; Strutton, Geoff; Wong, Richard

    2007-08-01

    "MAGIC syndrome" (Mouth And Genital ulcers with Inflamed Cartilage) has been proposed to describe patients with clinical features of both relapsing polychondritis and Behcet disease. A total of 18 cases have been reported with only 1 case associated with aneurysmal aortitis described in 1997. Herein, we describe a patient with MAGIC syndrome complicated by aneurysmal aortitis requiring cardiothoracic surgery and intensive immunosuppression. Monitoring for the possible development of inflammatory aortic aneurysms should thus be considered in patients with MAGIC syndrome who have persistently elevated serum inflammatory markers. If an aortic aneurysm is detected, cardiothoracic surgical referral is necessary, close monitoring for enlargement is mandatory, and intensification of immunosuppressive therapy should be considered.

  5. Interesting in- and outpatient attendances at Hogwarts Infirmary and St Mungo's Hospital for magical maladies.

    Science.gov (United States)

    Lim, Erle C H; Pomfrey, Poppy M; Quek, Amy M L; Seet, Raymond C S

    2006-02-01

    Ailments afflicting wizarding folk are underreported in the muggle world. The recent integration of muggles and magical folk with the return of You-Know-Who (aka He Who Must Not Be Named) may result in a similar affliction of inhabitants of both worlds. We describe interesting maladies afflicting muggles and wizarding folk alike, arising from the use and misuse of magic. We also provide a basic glossary of magical ailments, and describe their muggle corollaries. Further studies will hopefully result in the development of immunity against the unforgivable curses.

  6. Electric quadrupole and magnetic dipole moments of odd nuclei near the magic ones in a self-consistent approach

    CERN Document Server

    Co', G; Anguiano, M; Bernard, R N; Lallena, A M

    2015-01-01

    We present a model which describes the properties of odd-even nuclei with one nucleon more, or less, with respect to the magic number. In addition to the effects related to the unpaired nucleon, we consider those produced by the excitation of the closed shell core. By using a single particle basis generated with Hartree-Fock calculations, we describe the polarization of the doubly magic-core with Random Phase Approximation collective wave functions. In every step of the calculation, and for all the nuclei considered, we use the same finite-range nucleon-nucleon interaction. We apply our model to the evaluation of electric quadrupole and magnetic dipole moments of odd-even nuclei around oxygen, calcium, zirconium, tin and lead isotopes. Our Random Phase Approximation description of the polarization of the core improves the agreement with experimental data with respect to the predictions of the independent particle model. We compare our results with those obtained in first-order perturbation theory, with those ...

  7. Rewriting rural community and dictatorial history through magical realism in Márquez’s One Hundred Years of Solitude

    Directory of Open Access Journals (Sweden)

    Abdullah Abu Shahid

    2015-05-01

    Full Text Available Márquez was greatly influenced by his grandmother’s story-telling ability, and was highly indebted to the socio-political history of Latin America, particularly Colombia. In One Hundred Years of Solitude, he wants to reconstruct the lost world of childhood by using magical realism which gives expression to the world-view of a rural people who live in isolation from modern world. By retelling the official history from the perspective of the oppressed, he reveals the fact that history is never factual and impartial but serves the interest of those who write it. Through the banana company massacre and the subsequent hide and seek over the number of dead workers, Márquez exposes the way official history becomes fabricated and distorted by authorities, and fails to provide the original occurrences. He was disgusted with the political violence and civil wars which had distraught people; he was also against capitalism, scientific and technological inventions, and so-called modernization, which are the means through which foreign culture brings corruption and brutality, dominates, exploits and oppresses the natives, and threatens the native culture and identity. By employing magical realism, he was able to recreate Colombian history to protest against the way capitalism dominated the socio-political and economic structure of the region.

  8. A message from magic to science: seeing how the brain can be tricked may strengthen our thinking

    Directory of Open Access Journals (Sweden)

    Henrik Österblom

    2015-12-01

    Full Text Available Scientific discoveries rely on creative thinking, and several authors have explored similarities in and differences between creativity in the sciences and that in the arts. Here we explore possible ways in which science can learn from the arts, focusing specifically on experiences derived from the art of magic and on the limitations of human cognition. Generations of stage magicians or "illusionists" have made sophisticated use of the weaknesses in human systems of perception and interpretation. We highlight three important principles of magic tricks, including: (1 the audience see what it expects, (2 it is blind to all but the focus of attention, and (3 ideas spring predictably from a primed mind. These principles highlight a number of important tendencies, which we argue are shortcomings in the ability of scientists to perceive the world, and which scientists need to be aware of. Consciously addressing these shortcomings may help scientists improve their creativity, and will strengthen their capacity to address complex and global challenges.

  9. A heavy load for heavy ions

    CERN Multimedia

    2003-01-01

    On 25 September, the two large coils for the dipole magnet of ALICE, the LHC experiment dedicated to heavy ions, arrived at Point 2 on two heavy load trucks after a 1200 km journey from their assembly in Vannes, France.

  10. Heavy hadron decays with conserved heavy flavour

    Energy Technology Data Exchange (ETDEWEB)

    Faller, Sven; Mannel, Thomas [Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultaet, Universitaet Siegen, Walter-Flex-Strasse 3, D-57068 Siegen (Germany)

    2015-07-01

    We investigate the decays of heavy hadrons where the heavy quark acts as a spectator and the light quark decays in a weak transition. For these s → u or d → u decays we show that the decay rates can be reliably computed.

  11. Observations of the Crab pulsar with the MAGIC telescopes

    CERN Document Server

    Saito, T Y; Giavitto, G; Klepser, S; Schweizer, T; Zanin, R

    2011-01-01

    We report on the observations of the Crab pulsar with the MAGIC telesopes. Data were taken both in the mono-mode ($>25$ GeV) and in the stereo-mode ($>50$ GeV). Clear signals from the two peaks were detected with both modes and the phase resolved energy spectra were calculated. By comparing with the measurements done by Fermi-LAT, we found that the energy spectra of the Crab pulsar does not follow a power law with an exponential cutoff, but that it extends as a power law after the break at around 5 GeV. This suggests that the emission above 25 GeV is not dominated by the curvatura radiation, which is inconsistent with the standard prediction of the OG and SG models.

  12. Magic and the physical world in thirteenth-century scholasticism.

    Science.gov (United States)

    Marrone, Steven P

    2009-01-01

    The turn to modern science in the Scientific Revolution of the seventeenth century is typically characterized as dependent on the novel adoption of a mechanical hypothesis for operations in nature. In fact, the Middle Ages saw a partial anticipation of this phenomenon in the scholastic physics of the thirteenth century. More precisely, it was just the two factors, denial of action at a distance and an emphasis on the primary materiality of causation, that constituted this early mechanism--or "protomechanism." The latter's emergence can be seen most clearly where scholastic thinkers-here, William of Auvergne, Thomas Aquinas and Giles of Rome--confronted the theoretical limits of natural cause and effect in their efforts to determine the reality of magic and locate its place in the natural world.

  13. Band Structure in the Doubly Magic Nucleus 56Ni

    Institute of Scientific and Technical Information of China (English)

    DONG Bao-Guo; GUO Hong-Chao

    2004-01-01

    @@ Band structures near yrast lines of the Z = N doubly magic nucleus 56Ni are investigated with the configurationdependent cranked Nilsson-Strutinsky approach. The observed deformed bands are confirmed as highly deformed and their properties are explained theoretically. The calculated transition quadrupole moments Qt, ~ 1.7 eb at low spin as well as the kinematic and dynamic moments of inertia J1) and J(2) for configurations of interest are found to be generally in good agreement with the observed results. Two terminating states at 20+ and 29- for the two observed bands and other terminations in 56Ni are also predicted. It is found that the configuration-dependent cranked Nilsson-Strutinsky approach is better in the description of nuclear properties and band structures at high spin than other models.

  14. Magic and artifice in the collection of Athanasius Kircher.

    Science.gov (United States)

    Waddell, Mark A

    2010-03-01

    Situated at the center of intellectual life in baroque Rome, the museum administered by the Jesuit naturalist Athanasius Kircher (1602-1680) simultaneously instructed and bemused its audiences with an exuberant mix of exotic animals, classical art and technological marvels. Kircher's playful use of spectacle and his irrepressible fondness for "magic" were derided by contemporaries as frivolous wonder-mongering, but the lavish machines at the heart of his museum were more than mere showpieces. Instead, they presented audiences with a compelling vision of the natural world in which the hidden foundations of the universe could be captured and displayed by artifice. Kircher's collection was in itself a vast instrument of revelation, conceived on a grander scale than the telescope of Galileo but rooted all the same in contemporary scientific culture. 2009 Elsevier Ltd. All rights reserved.

  15. William E. Adams: Thomas Mann and The Magic Mountain.

    Science.gov (United States)

    Naef, A P

    1998-01-01

    The lobectomy for carcinoma of the lung performed by William E. Adams in 1946 on Thomas Mann, author of the tuberculosis saga The Magic Mountain, deserves to be added to Harold Ellis's series of "historically famous operations." This lobectomy, by which the surgeon cured his far more famous patient, was only one episode in his 40 eventful years as Chicago's leading pioneer in early thoracic surgery. The historic case is well documented by preoperative, operative, and pathology reports obtained through the courtesy of still-living witnesses and associates, friends of the author. Thomas Mann died 9 years later of an aortoiliac rupture at the University Hospital in Zurich. At autopsy no local recurrence or distal metastasis was found.

  16. Magic, science and masculinity: marketing toy chemistry sets.

    Science.gov (United States)

    Al-Gailani, Salim

    2009-12-01

    At least since the late nineteenth century, toy chemistry sets have featured in standard scripts of the achievement of eminence in science, and they remain important in constructions of scientific identity. Using a selection of these toys manufactured in Britain and the United States, and with particular reference to the two dominant American brands, Gilbert and Chemcraft, this paper suggests that early twentieth-century chemistry sets were rooted in overlapping Victorian traditions of entertainment magic and scientific recreations. As chemistry set marketing copy gradually reoriented towards emphasising scientific modernity, citizenship, discipline and educational value, pre-twentieth-century traditions were subsumed within domestic-and specifically masculine-tropes. These developments in branding strategies point to transformations in both users' engagement with their chemistry sets and the role of scientific toys in domestic play. The chemistry set serves here as a useful tool for measuring cultural change and lay engagement with chemistry.

  17. Egyptian imprints on Geto-Dacian magical medicine.

    Science.gov (United States)

    Baran, Dana

    2010-12-01

    Several characteristics of Egyptian culture and civilization could be identified in prehistoric and ancient historic Geto-Dacian territories, belonging to modern Romania (Fig. 1). From early times, magic, religion and philosophy have been part of pre-scientific medicine. Therefore these aspects are to be tackled when speaking of medicine in mythological or legendary ages. Progress of ancient Geto-Dacian medicine was principally ascribed to the interface of local civilizations with ancient Egypt, Greece and Rome. Such connections were well documented and understood in historic times and were mainly based on texts of renowned Greek and Roman historians. Egyptian impact upon Dacia, -the ancient name of today's Romania-, was often explained in terms of indirect Greek- or Roman-mediated influences.The Greek and then the Roman colonies on the Black sea shore, together with later Roman colonies in Dacia Felix, founded in the heart of Transylvania, enabled access for Romania to Mediterranean cultures, including that of Egypt.

  18. The Magic of Logical Inference in Probabilistic Programming

    CERN Document Server

    Gutmann, Bernd; Kimmig, Angelika; Bruynooghe, Maurice; De Raedt, Luc; 10.1017/S1471068411000238

    2011-01-01

    Today, many different probabilistic programming languages exist and even more inference mechanisms for these languages. Still, most logic programming based languages use backward reasoning based on SLD resolution for inference. While these methods are typically computationally efficient, they often can neither handle infinite and/or continuous distributions, nor evidence. To overcome these limitations, we introduce distributional clauses, a variation and extension of Sato's distribution semantics. We also contribute a novel approximate inference method that integrates forward reasoning with importance sampling, a well-known technique for probabilistic inference. To achieve efficiency, we integrate two logic programming techniques to direct forward sampling. Magic sets are used to focus on relevant parts of the program, while the integration of backward reasoning allows one to identify and avoid regions of the sample space that are inconsistent with the evidence.

  19. Shortwave Hyperspectral Observations During MAGIC Final Campaign Summary

    Energy Technology Data Exchange (ETDEWEB)

    McBride, P. J. [Atmospheric Radiation Measurement, Washington, DC (United States); Marshak, A. [Atmospheric Radiation Measurement, Washington, DC (United States); Yang, W. [Atmospheric Radiation Measurement, Washington, DC (United States)

    2016-03-01

    The Marine ARM GPCI1 Investigation of Clouds (MAGIC) field campaign was initiated to improve our understanding of low-level marine clouds that have a significant influence on the Earth’s climate. The campaign was conducted using an ARM mobile facility deployed on a commercial ship traveling between Honolulu, Hawaii, and Los Angeles, California, from October 2012 to September 2013. The solar spectral flux radiometer (SSFR) was deployed on July 6, 2013, through the end of the campaign. The SSFR was calibrated and installed by Warren Gore of NASA Ames Research Center, and the data is and will be analyzed by Drs. Alexander Marshak and Weidong Yang of NASA Goddard Space Flight Center, Dr. Samuel LeBlanc of NASA Ames Research Center, Dr. Sebastian Schmidt of the University of Colorado-Boulder, and Dr. Patrick McBride of Atmospheric & Space Technology Research Associates in Boulder, Colorado.

  20. Gustave Flaubert, Charles Dickens, and Isaac Pulvermacher's "magic band".

    Science.gov (United States)

    Waits, Robert K

    2013-01-01

    Around 1850, Isaac L. Pulvermacher (1815-1884) joined the ranks of so-called "galvanists" who had, for nearly a century, been touting the shocks and sparks of electricity as a miracle cure for all ills, including neurological complaints such as palsy and hemiplegia. The famed authors, Gustave Flaubert (1821-1880), in France, and Charles Dickens (1812-1870), in England, although contemporaries, apparently never met or corresponded. But during their lives, they both became aware of Pulvermacher and his patented Hydro-Electric Chains, claimed to impart vigor and cure nearly every complaint. Pulvermacher's chains made a cameo appearance in Madame Bovary (1857), Flaubert's controversial (and most successful) novel. Among Dickens's last letters (1870) was an order for I. L. Pulvermacher and Company's "magic band." Since the Victorian age, electrical and magnetic cures, for better or worse, continue to be products of both the medical profession and quackery. © 2013 Elsevier B.V. All rights reserved.

  1. Schizotypy and mindfulness: Magical thinking without suspiciousness characterizes mindfulness meditators

    Directory of Open Access Journals (Sweden)

    Elena Antonova

    2016-09-01

    Full Text Available Despite growing evidence for demonstrated efficacy of mindfulness in various disorders, there is a continuous concern about the relationship between mindfulness practice and psychosis. As schizotypy is part of the psychosis spectrum, we examined the relationship between long-term mindfulness practice and schizotypy in two independent studies. Study 1 included 24 experienced mindfulness practitioners (19 males from the Buddhist tradition (meditators and 24 meditation-naïve individuals (all males. Study 2 consisted of 28 meditators and 28 meditation-naïve individuals (all males. All participants completed the Schizotypal Personality Questionnaire (Raine, 1991, a self-report scale containing 9 subscales (ideas of reference, excessive social anxiety, magical thinking, unusual perceptual experiences, odd/eccentric behavior, no close friends, odd speech, constricted affect, suspiciousness. Participants of study 2 also completed the Five-Facet Mindfulness Questionnaire which assesses observing (Observe, describing (Describe, acting with awareness (Awareness, non-judging of (Non-judgment and non-reactivity to inner experience (Non-reactivity facets of trait mindfulness. In both studies, meditators scored significantly lower on suspiciousness and higher on magical thinking compared to meditation-naïve individuals and showed a trend towards lower scores on excessive social anxiety. Excessive social anxiety correlated negatively with Awareness and Non-judgment; and suspiciousness with Awareness, Non-judgment and Non-reactivity facets across both groups. The two groups did not differ in their total schizotypy score. We conclude that mindfulness practice is not associated with an overall increase in schizotypal traits. Instead, the pattern suggests that mindfulness meditation, particularly with an emphasis on the Awareness, Non-judgment and Non-reactivity aspects, may help to reduce suspiciousness and excessive social anxiety.

  2. Production cross sections of heavy neutron-rich nuclei approaching the nucleosynthesis r-process path around A =195

    Science.gov (United States)

    Kurtukian-Nieto, T.; Benlliure, J.; Schmidt, K.-H.; Audouin, L.; Becker, F.; Blank, B.; Casarejos, E.; Farget, F.; Fernández-Ordóñez, M.; Giovinazzo, J.; Henzlova, D.; Jurado, B.; Pereira, J.; Yordanov, O.

    2014-02-01

    In the present work we were able to synthesize and measure with high accuracy the production cross sections of more than 190 heavy neutron-rich nuclei by the in-flight fragmentation of relativistic 208Pb projectiles, 26 of which were produced for the first time. This work has shown that the N =126 region far below the doubly magic 208Pb has become accessible experimentally and represents a step further towards the study of heavy neutron-rich nuclei approaching the r-process waiting point at A =195.

  3. 78 FR 70076 - Large Scale Networking (LSN)-Middleware and Grid Interagency Coordination (MAGIC) Team

    Science.gov (United States)

    2013-11-22

    ... Large Scale Networking (LSN)--Middleware and Grid Interagency Coordination (MAGIC) Team AGENCY: The Networking and Information Technology Research and Development (NITRD) National Coordination Office (NCO... Networking (LSN) Coordinating Group (CG). Public Comments: The government seeks individual input;...

  4. 77 FR 58416 - Large Scale Networking (LSN); Middleware and Grid Interagency Coordination (MAGIC) Team

    Science.gov (United States)

    2012-09-20

    ... Large Scale Networking (LSN); Middleware and Grid Interagency Coordination (MAGIC) Team AGENCY: The Networking and Information Technology Research and Development (NITRD) National Coordination Office (NCO... to the Large Scale Networking (LSN) Coordinating Group (CG). Public Comments: The government...

  5. 78 FR 7464 - Large Scale Networking (LSN)-Middleware And Grid Interagency Coordination (MAGIC) Team

    Science.gov (United States)

    2013-02-01

    ... Large Scale Networking (LSN)--Middleware And Grid Interagency Coordination (MAGIC) Team AGENCY: The Networking and Information Technology Research and Development (NITRD) National Coordination Office (NCO... Team reports to the Large Scale Networking (LSN) Coordinating Group (CG). Public Comments:...

  6. A Dialectics of Reason and Instinct: Thomas Mann’s Magic Mountain

    Directory of Open Access Journals (Sweden)

    Ciro Schmidt Andrade

    Full Text Available The whole Thomas Mann’s work is a reflection of the permanent tension between instinct and reason, the irruption of the repressed and life order. This is particularly manifested in his work The Magic Mountain.

  7. High-resolution NMR of anisotropic samples with spinning away from the magic angle

    Energy Technology Data Exchange (ETDEWEB)

    Sakellariou, Dimitris; Meriles, Carlos A.; Martin, Rachel W.; Pines, Alexander

    2003-03-31

    High-resolution NMR of samples in the solid state is typically performed under mechanical sample spinning around an axis that makes an angle, called the magic angle, of 54.7 degrees with the static magnetic field. There are many cases in which geometrical and engineering constraints prevent spinning at this specific angle. Implementations of in-situ and ex-situ magic angle field spinning might be extremely demanding because of the power requirements or an inconvenient sample size or geometry. Here we present a methodology based on switched angle spinning between two angles, none of which is the magic angle, which provide both isotropic and anisotropic information. Using this method, named Projected Magic Angle Spinning, we were able to obtain resolved isotropic chemical shifts in spinning samples where the broadening is mostly inhomogeneous.

  8. On the Classification of Two Center Orbits for Magical Black Holes

    CERN Document Server

    Andrianopoli, Laura; Ferrara, Sergio

    2013-01-01

    We report on recent work [4] concerning the determination of the two-centered generic charge orbits of magical $\\mathcal{N} = 2$ and maximal $\\mathcal{N} = 8$ supergravity theories in four dimensions.

  9. It’s alive, it’s magic, it’s in love with you

    DEFF Research Database (Denmark)

    Rasmussen, Majken Kirkegård; Grönvall, Erik; Kinch, Sofie

    2013-01-01

    is nevertheless primarily preoccupied with the technical challenges and potential application areas, rather than how users actually approach, experience, interpret and understand Actuated Interfaces. Based on three case studies, investigating how people experience Actuated Interfaces, we point to; magic, movement...

  10. Magnetic sublevel independent magic wavelengths: Application in the Rb and Cs atoms

    CERN Document Server

    Singh, Sukhjit; Arora, Bindiya

    2016-01-01

    A generic scheme to trap atoms at the magic wavelengths ($\\lambda_{\\rm{magic}}$s) that are independent of vector and tensor components of the interactions of the atoms with the external electric field is presented. The $\\lambda_{\\rm{magic}}$s for the laser cooling D2 lines in the Rb and Cs atoms are demonstrated and their corresponding polarizability values without vector and tensor contributions are given. Consequently, these $\\lambda_{\\rm{magic}}$s are independent of magnetic sublevels and hyperfine levels of the atomic states involved in the transition, thus, can offer unique approaches to carry out many high precision measurements with minimal systematics. Inevitably, the proposed technique can also be used for electronic or hyperfine transitions in other atomic systems.

  11. Physics of heavy neutrinos

    CERN Document Server

    Gluza, J

    1996-01-01

    Theoretical and experimental situation in physics of heavy neutrinos (M_N>M_Z) is briefly presented. Various experimental bounds on heavy neutrino masses and mixings are shortly reviewed. Special attention is paid to possibility of detecting heavy neutrinos in future lepton linear colliders.

  12. Postoperative survival following perioperative MAGIC versus neoadjuvant OE02-type chemotherapy in oesophageal adenocarcinoma.

    Science.gov (United States)

    Reece-Smith, A M; Saunders, J H; Soomro, I N; Bowman, C R; Duffy, J P; Kaye, P V; Welch, N T; Madhusudan, S; Parsons, S L

    2017-05-01

    The optimal management of resectable oesophageal adenocarcinoma is controversial, with many centres using neoadjuvant chemotherapy following the Medical Research Council (MRC) oesophageal working group (OE02) trial and the MRC Adjuvant Gastric Infusional Chemotherapy (MAGIC) trial. The more intensive MAGIC regimen is used primarily in gastric cancer but some also use it for oesophageal cancer. A database of cancer resections (2001-2013) provided information on survival of patients following either OE02 or MAGIC-type treatment. The data were compared using Kaplan-Meier analysis. Straight-to-surgery patients were also reviewed and divided into an 'early' cohort (2001-2006, OE02 era) and a 'late' cohort (2006-2013, MAGIC era) to estimate changes in survival over time. Subgroup analysis was performed for responders (tumour regression grade [TRG] 1-3) versus non-responders (TRG 4 and 5) and for anatomical site (gastro-oesophageal junction [GOJ] vs oesophagus). An OE02 regimen was used for 97 patients and 275 received a MAGIC regimen. Those in the MAGIC group were of a similar age to those undergoing OE02 chemotherapy but the proportion of oesophageal cancers was higher among MAGIC patients than among those receiving OE02 treatment. MAGIC patients had a significantly lower stage following chemotherapy than OE02 patients and a higher median overall survival although TRG was similar. On subgroup analysis, this survival benefit was maintained for GOJ and oesophageal cancer patients as well as non-responders. Analysis of responders showed no difference between regimens. 'Late' group straight-to-surgery patients were significantly older than those in the 'early' group. Survival, however, was not significantly different for these two cohorts. Although the original MAGIC trial comprised few oesophageal cancer cases, our patients had better survival with MAGIC than with OE02 chemotherapy in all anatomical subgroups, even though there was no significant change in operative

  13. Charms in the Context of Magic Practice. The Case of Slovenia

    OpenAIRE

    2003-01-01

    In Slovenia, charms or invocations are one- or two-strophe formulae that the medicine man or woman used at addressing the powers beyond to procure healing or to influence certain natural processes. They are as if a bridge between this world and the other, helping achieve to something on clearly supernatural or magical grounds. The following paper provides a brief insight into magical folk traditions as preserved in Slovene oral and written sources. The present article gives a short ove...

  14. The Inca healer: empirical medical knowledge and magic in pre-Columbian Peru

    OpenAIRE

    Elferink, Jan G R

    2015-01-01

    The role of medical practitioners among the Incas is addressed, based on archeological findings and especially the writings of the Spanish chroniclers. In Inca medicine a large role was reserved for religion and magic but at the same time an extensive knowledge of medicinal plants was available. As a consequence there were several types of healers who cured with a mixture of medicinal plants and religious-magic ceremonies. The hampicamayoc or ‘official in charge of medicines’ was the one who ...

  15. Effect of science magic applied in interactive lecture demonstrations on conceptual understanding

    Science.gov (United States)

    Taufiq, Muhammad; Suhandi, Andi; Liliawati, Winny

    2017-08-01

    Research about the application of science magic-assisting Interactive Lecture Demonstrations (ILD) has been conducted. This research is aimed at providing description about the comparison of the improvement of the conceptual understanding of lesson on pressure between students who receive physics lesson through science magic-assisting ILD and students who receive physics lesson through ILD without science magic. This research used a quasi-experiment methods with Control Group Pretest-Posttest Design. The subject of the research is all students of class VIII in one of MTs (Islamic junior high school) in Pekalongan. Research samples were selected using random sampling technique. Data about students' conceptual understanding was collected using test instrument of conceptual understanding in the form of multiple choices. N-gain average calculation was performed in order to determine the improvement of students' conceptual understanding. The result of the research shows that conceptual understanding of students on lesson about pressure who received lesson with ILD using science magic is higher than students who received lesson with ILD without science magic . Therefore, the conclusion is that the application of science magic ILD is more effective to improve the conceptual understanding of lesson on pressure.

  16. Magic as a therapeutic intervention to promote coping in hospitalized pediatric patients.

    Science.gov (United States)

    Hart, Robyn; Walton, Michael

    2010-01-01

    Magic as a therapeutic intervention is used in an innovative, hospital-based program to address the psychosocial issues children and adolescents often experience as a result of illness and hospitalization. A child life specialist and a magician with an MBA collaborated, blending clinical expertise with business acumen and professional-level magic skills to create the program. The program has two distinct components: (1) magicians using interactive, close-up magic and humor as a technique to promote socialization, enhance self-esteem, and increase opportunities for choice and control, and (2) magicians providing the personal instruction and materials that enable chronically ill and long-term patients to learn and perform magic to promote a sense of empowerment and feelings of mastery. Positive responses from patients, families, and staff to the program at one hospital led to the creation of Open Heart Magic, a non-profit children's foundation that maintains and staffs bedside, interactive therapeutic magic programs in five hospitals in the Chicago metropolitan area.

  17. The Magic of the Magic Kingdom: Folklore and Fan Culture in Disneyland

    OpenAIRE

    Giles, David

    2017-01-01

    As fandom studies are becoming more popular and important, one fandom yet remains largely unstudied: the fandom surrounding Disneyland. The Disneyland fandom is unique in a number of ways, chief among them the fans’ relationship to the content creators: unlike many other companies in similar positions, Disney seeks to put boundaries on fan participation and to discourage or stamp out behaviors it deems unacceptable. And yet, in spite of this official meddling, the fandom continues to thrive. ...

  18. QCD string in excited heavy-light mesons and heavy-quark hybrids

    CERN Document Server

    Kalashnikova, Yu S

    2016-01-01

    The QCD string model is employed to evaluate the masses of orbitally and radially excited heavy-light mesons and lightest hybrids in the spectrum of charmonium and bottomonium. The number of parameters of the model is reduced to only seven which are the string tension, the two values of the strong coupling constant (one for heavy-light and $\\bar{c}c$ mesons and one for $\\bar{b}b$ mesons), and the four overall spectrum shift constants which depend on the quark contents of the particular meson or hybrid family. A few well-established states in the spectrum of heavy-light and heavy-heavy mesons are used to fix these parameters, and then the masses of other mesons and hybrids come out as predictions of the model which are confronted with the existing experimental data, and a few suggestions are made concerning yet not measured quantum numbers of some states in the spectrum of charmonium and bottomonium.

  19. Sagan numbers

    OpenAIRE

    Mendonça, J. Ricardo G.

    2012-01-01

    We define a new class of numbers based on the first occurrence of certain patterns of zeros and ones in the expansion of irracional numbers in a given basis and call them Sagan numbers, since they were first mentioned, in a special case, by the North-american astronomer Carl E. Sagan in his science-fiction novel "Contact." Sagan numbers hold connections with a wealth of mathematical ideas. We describe some properties of the newly defined numbers and indicate directions for further amusement.

  20. Fibonacci numbers

    CERN Document Server

    Vorob'ev, Nikolai Nikolaevich

    2011-01-01

    Fibonacci numbers date back to an 800-year-old problem concerning the number of offspring born in a single year to a pair of rabbits. This book offers the solution and explores the occurrence of Fibonacci numbers in number theory, continued fractions, and geometry. A discussion of the ""golden section"" rectangle, in which the lengths of the sides can be expressed as a ration of two successive Fibonacci numbers, draws upon attempts by ancient and medieval thinkers to base aesthetic and philosophical principles on the beauty of these figures. Recreational readers as well as students and teacher

  1. Number names and number understanding

    DEFF Research Database (Denmark)

    Ejersbo, Lisser Rye; Misfeldt, Morten

    2014-01-01

    through using mathematical names for the numbers such as one-ten-one for 11 and five-ten-six for 56. The project combines the renaming of numbers with supporting the teaching with the new number names. Our hypothesis is that Danish children have more difficulties learning and working with numbers, because...... the Danish number names are more complicated than in other languages. Keywords: A research project in grade 0 and 1th in a Danish school, Base-10 system, two-digit number names, semiotic, cognitive perspectives....

  2. Selectively dispersed isotope labeling for protein structure determination by magic angle spinning NMR

    Energy Technology Data Exchange (ETDEWEB)

    Eddy, Matthew T. [Massachusetts Institute of Technology, Department of Chemistry (United States); Belenky, Marina [Brandeis University, Department of Chemistry (United States); Sivertsen, Astrid C. [Massachusetts Institute of Technology, Francis Bitter Magnet Laboratory (United States); Griffin, Robert G. [Massachusetts Institute of Technology, Department of Chemistry (United States); Herzfeld, Judith, E-mail: herzfeld@brandeis.edu [Brandeis University, Department of Chemistry (United States)

    2013-10-15

    The power of nuclear magnetic resonance spectroscopy derives from its site-specific access to chemical, structural and dynamic information. However, the corresponding multiplicity of interactions can be difficult to tease apart. Complimentary approaches involve spectral editing on the one hand and selective isotope substitution on the other. Here we present a new 'redox' approach to the latter: acetate is chosen as the sole carbon source for the extreme oxidation numbers of its two carbons. Consistent with conventional anabolic pathways for the amino acids, [1-{sup 13}C] acetate does not label {alpha} carbons, labels other aliphatic carbons and the aromatic carbons very selectively, and labels the carboxyl carbons heavily. The benefits of this labeling scheme are exemplified by magic angle spinning spectra of microcrystalline immunoglobulin binding protein G (GB1): the elimination of most J-couplings and one- and two-bond dipolar couplings provides narrow signals and long-range, intra- and inter-residue, recoupling essential for distance constraints. Inverse redox labeling, from [2-{sup 13}C] acetate, is also expected to be useful: although it retains one-bond couplings in the sidechains, the removal of CA-CO coupling in the backbone should improve the resolution of NCACX spectra.

  3. Structure of fully protonated proteins by proton-detected magic-angle spinning NMR.

    Science.gov (United States)

    Andreas, Loren B; Jaudzems, Kristaps; Stanek, Jan; Lalli, Daniela; Bertarello, Andrea; Le Marchand, Tanguy; Cala-De Paepe, Diane; Kotelovica, Svetlana; Akopjana, Inara; Knott, Benno; Wegner, Sebastian; Engelke, Frank; Lesage, Anne; Emsley, Lyndon; Tars, Kaspars; Herrmann, Torsten; Pintacuda, Guido

    2016-08-16

    Protein structure determination by proton-detected magic-angle spinning (MAS) NMR has focused on highly deuterated samples, in which only a small number of protons are introduced and observation of signals from side chains is extremely limited. Here, we show in two fully protonated proteins that, at 100-kHz MAS and above, spectral resolution is high enough to detect resolved correlations from amide and side-chain protons of all residue types, and to reliably measure a dense network of (1)H-(1)H proximities that define a protein structure. The high data quality allowed the correct identification of internuclear distance restraints encoded in 3D spectra with automated data analysis, resulting in accurate, unbiased, and fast structure determination. Additionally, we find that narrower proton resonance lines, longer coherence lifetimes, and improved magnetization transfer offset the reduced sample size at 100-kHz spinning and above. Less than 2 weeks of experiment time and a single 0.5-mg sample was sufficient for the acquisition of all data necessary for backbone and side-chain resonance assignment and unsupervised structure determination. We expect the technique to pave the way for atomic-resolution structure analysis applicable to a wide range of proteins.

  4. Selectively Dispersed Isotope Labeling for Protein Structure Determination by Magic Angle Spinning NMR

    Science.gov (United States)

    Eddy, Matthew T.; Belenky, Marina; Sivertsen, Astrid; Griffin, Robert G.; Herzfeld, Judith

    2013-01-01

    The power of nuclear magnetic resonance spectroscopy derives from its site-specific access to chemical, structural and dynamic information. However, the corresponding multiplicity of interactions can be difficult to tease apart. Complimentary approaches involve spectral editing on the one hand and selective isotope substitution on the other. Here we present a new “redox” approach to the latter: acetate is chosen as the sole carbon source for the extreme oxidation numbers of its two carbons. Consistent with conventional anabolic pathways for the amino acids, [1-13C] acetate does not label α carbons, labels other aliphatic carbons and the aromatic carbons very selectively, and labels the carboxyl carbons heavily. The benefits of this labeling scheme are exemplified by magic angle spinning spectra of microcrystalline immunoglobulin binding protein G (GB1): the elimination of most J-couplings and one- and two-bond dipolar couplings provides narrow signals and long-range, intra- and inter-residue, recoupling essential for distance constraints. Inverse redox labeling, from [2-13C] acetate, is also expected to be useful: although it retains one-bond couplings in the sidechains, the removal of CA-CO coupling in the backbone should improve the resolution of NCACX spectra. PMID:23990199

  5. From heavy ions to exotic atoms

    OpenAIRE

    Indelicato, Paul; Trassinelli, Martino

    2005-01-01

    We review a number of experiments and theoretical calculations on heavy ions and exotic atoms, which aim at providing informations on fundamental interactions. Among those are propositions of experiments for parity violation measurements in heavy ions and high-precision mesurements of He-like transition energies in highly charged ions. We also describe recent experiments on pionic atoms, that make use of highly-charged ion transitions to obtain accurate measurements of strong interaction shif...

  6. From heavy ions to exotic atoms

    OpenAIRE

    Indelicato, Paul; Trassinelli, Martino

    2005-01-01

    We review a number of experiments and theoretical calculations on heavy ions and exotic atoms, which aim at providing informations on fundamental interactions. Among those are propositions of experiments for parity violation measurements in heavy ions and high-precision mesurements of He-like transition energies in highly charged ions. We also describe recent experiments on pionic atoms, that make use of highly-charged ion transitions to obtain accurate measurements of strong interaction shif...

  7. Hadronic molecules in the heavy baryon spectrum

    Science.gov (United States)

    Entem, D. R.; Ortega, P. G.; Fernández, F.

    2016-01-01

    We study possible baryon molecules in the non-strange heavy baryon spectrum. We include configurations with a heavy-meson and a light baryon. We find several structures, in particular we can understand the Λc(2940) as a D*N molecule with JP = 3/2- quantum numbers. We also find D(*)Δ candidates for the recently discovered Xc(3250) resonance.

  8. Eulerian numbers

    CERN Document Server

    Petersen, T Kyle

    2015-01-01

    This text presents the Eulerian numbers in the context of modern enumerative, algebraic, and geometric combinatorics. The book first studies Eulerian numbers from a purely combinatorial point of view, then embarks on a tour of how these numbers arise in the study of hyperplane arrangements, polytopes, and simplicial complexes. Some topics include a thorough discussion of gamma-nonnegativity and real-rootedness for Eulerian polynomials, as well as the weak order and the shard intersection order of the symmetric group. The book also includes a parallel story of Catalan combinatorics, wherein the Eulerian numbers are replaced with Narayana numbers. Again there is a progression from combinatorics to geometry, including discussion of the associahedron and the lattice of noncrossing partitions. The final chapters discuss how both the Eulerian and Narayana numbers have analogues in any finite Coxeter group, with many of the same enumerative and geometric properties. There are four supplemental chapters throughout, ...

  9. [Incorporation of an organic MAGIC (Model of Acidification of Groundwater in Catchments) and testing of the revised model using independent data sources]. [MAGIC Model

    Energy Technology Data Exchange (ETDEWEB)

    Sullivan, T.J.

    1992-09-01

    A project was initiated in March, 1992 to (1) incorporate a rigorous organic acid representation, based on empirical data and geochemical considerations, into the MAGIC model of acidification response, and (2) test the revised model using three sets of independent data. After six months of performance, the project is on schedule and the majority of the tasks outlined for Year 1 have been successfully completed. Major accomplishments to data include development of the organic acid modeling approach, using data from the Adirondack Lakes Survey Corporation (ALSC), and coupling the organic acid model with MAGIC for chemical hindcast comparisons. The incorporation of an organic acid representation into MAGIC can account for much of the discrepancy earlier observed between MAGIC hindcasts and paleolimnological reconstructions of preindustrial pH and alkalinity for 33 statistically-selected Adirondack lakes. Additional work is on-going for model calibration and testing with data from two whole-catchment artificial acidification projects. Results obtained thus far are being prepared as manuscripts for submission to the peer-reviewed scientific literature.

  10. Study of shell evolution around the doubly magic $^{208}$Pb via a multinucleon transfer reaction with an unstable beam

    CERN Multimedia

    This proposal aims at the study of the neutron-rich region around the doubly-magic nucleus $^{208}$Pb populated via a multinucleon transfer reaction. An unstable $^{94}$Rb beam will be delivered by HIE-ISOLDE at 5.5 MeV$\\cdot$u onto a $^{208}$Pb 13.0 mg/cm$^{2}$ target. The $\\gamma$- rays will be recorded by the MINIBALL $\\gamma$-ray spectrometer. The aim of the experiment is twofold: \\\\ \\\\ i) firstly it will represent the proof of principle that multinucleon transfer reactions with neutron-rich unstable beams is efficient to populate neutron-rich heavy binary partners and represents a competitive method to cold fragmentation \\\\ ii) secondly we aim at populating medium- to high-spin states in $^{212;214}$Pb and $^{208;210}$Hg to elucidate the existence of the 16$^{+}$ isomer in the lead isotopes and at the same time to disentangle the puzzling case of a very low energy 3$^{-}$ state in $^{210}$Hg not described by any nuclear model. \\\\ \\\\ The experimental results will be compared with large-scale shell-model ...

  11. Soil heavy metals

    Energy Technology Data Exchange (ETDEWEB)

    Sherameti, Irena [Jena Univ. (Germany). Inst. fuer Allgemeine Botanik und Pflanzenphysiologie; Varma, Ajit (eds.) [Amity Univ., Uttar Pradesh (India). Amity Inst. of Microbial Technology; Amity Science, Technology and Innovation Foundation, Noida, UP (India)

    2010-07-01

    Human activities have dramatically changed the composition and organisation of soils. Industrial and urban wastes, agricultural application and also mining activities resulted in an increased concentration of heavy metals in soils. How plants and soil microorganisms cope with this situation and the sophisticated techniques developed for survival in contaminated soils is discussed in this volume. The topics presented include: the general role of heavy metals in biological soil systems; the relation of inorganic and organic pollutions; heavy metal, salt tolerance and combined effects with salinity; effects on abuscular mycorrhizal and on saprophytic soil fungi; heavy metal resistance by streptomycetes; trace element determination of environmental samples; the use of microbiological communities as indicators; phytostabilization of lead polluted sites by native plants; effects of soil earthworms on removal of heavy metals and the remediation of heavy metal contaminated tropical land. (orig.)

  12. Heavy quark masses

    Science.gov (United States)

    Testa, Massimo

    1990-01-01

    In the large quark mass limit, an argument which identifies the mass of the heavy-light pseudoscalar or scalar bound state with the renormalized mass of the heavy quark is given. The following equation is discussed: m(sub Q) = m(sub B), where m(sub Q) and m(sub B) are respectively the mass of the heavy quark and the mass of the pseudoscalar bound state.

  13. PG 1553+113: five years of observations with MAGIC

    CERN Document Server

    Aleksić, : J; Antonelli, L A; Antoranz, P; Asensio, M; Backes, M; Barrio, J A; Bastieri, D; González, J Becerra; Bednarek, W; Berdyugin, A; Berger, K; Bernardini, E; Biland, A; Blanch, O; Bock, R K; Boller, A; Bonnoli, G; Tridon, D Borla; Braun, I; Bretz, T; Cañellas, A; Carmona, E; Carosi, A; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Cossio, L; Covino, S; Dazzi, F; De Angelis, A; De Caneva, G; del Pozo, E De Cea; De Lotto, B; Mendez, C Delgado; Ortega, A Diago; Doert, M; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Elsaesser, D; Ferenc, D; Fonseca, M V; Font, L; Fruck, C; López, R J García; Garczarczyk, M; Garrido, D; Giavitto, G; Godinović, N; Hadasch, D; Häfner, D; Herrero, A; Hildebrand, D; Höhne-Mönch, D; Hose, J; Hrupec, D; Huber, B; Jogler, T; Kellermann, H; Klepser, S; Krähenbühl, T; Krause, J; La Barbera, A; Lelas, D; Leonardo, E; Lindfors, E; Lombardi, S; López, M; López-Oramas, A; Lorenz, E; Makariev, M; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Mariotti, M; Martínez, M; Mazin, D; Meucci, M; Miranda, J M; Mirzoyan, R; Miyamoto, H; Moldón, J; Moralejo, A; Munar-Adrover, P; Nieto, D; Nilsson, K; Orito, R; Oya, I; Paneque, D; Paoletti, R; Pardo, S; Paredes, J M; Partini, S; Pasanen, M; Pauss, F; Perez-Torres, M A; Persic, M; Peruzzo, L; Pilia, M; Pochon, J; Prada, F; Moroni, P G Prada; Prandini, E; Puljak, I; Reichardt, I; Reinthal, R; Rhode, W; Ribó, M; Rico, J; Rügamer, S; Saggion, A; Saito, K; Saito, T Y; Salvati, M; Satalecka, K; Scalzotto, V; Scapin, V; Schultz, C; Schweizer, T; Shayduk, M; Shore, S N; Sillanpää, A; Sitarek, J; Sobczynska, D; Spanier, F; Spiro, S; Stamatescu, V; Stamerra, A; Steinke, B; Storz, J; Strah, N; Surić, T; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzić, T; Tescaro, D; Teshima, M; Tibolla, O; Torres, D F; Treves, A; Uellenbeck, M; Vankov, H; Vogler, P; Wagner, R M; Weitzel, Q; Zabalza, V; Zandanel, F; Zanin, R; Buson, S; Horan, D; Larsson, S

    2011-01-01

    We present the results of five years (2005-2009) of MAGIC observations of the BL Lac object PG 1553+113 at very high energies (VHEs, E > 100 GeV). Power law fits of the individual years are compatible with a steady mean photon index $\\Gamma$ = 4.27 \\pm 0.14. In the last three years of data, the flux level above 150 GeV shows a clear variability (probability of constant flux < 0.001%). The flux variations are modest, lying in the range from 4% to 11% of the Crab Nebula flux. Simultaneous optical data also show only modest variability that seems to be correlated with VHE gamma ray variability. We also performed a temporal analysis of (all available) simultaneous Fermi/LAT data of PG 1553+113 above 1 GeV, which reveals hints of variability in the 2008-2009 sample. Finally, we present a combination of the mean spectrum measured at very high energies with archival data available for other wavelengths. The mean spectral energy distribution can be modeled with a one-zone Synchrotron Self Compton (SSC) model, whic...

  14. Conjuring a Reality: The Magic of the Practice of Accounting

    Directory of Open Access Journals (Sweden)

    Stacy A. Mastrolia

    2014-09-01

    Full Text Available Purpose: Recently, magic has been given increasing attention by psychologists for what it can reveal about how the human cognitive system works. This paper examines whether these same cognitive processes are at play in another arena, specifi cally, the presentation of financial accounting� information. Approach: The authors reviewed the fi ndings of cognitive scientists from their studies of magicians and applied these to the activities of professional accountants. Findings: Specifi c cognitive processes which magicians and accountants take advantage of, explicitly for one and implicitly for the other, are the same: good continuation, habituation, and attentional capture. Value: Further research regarding such interactions between accounting and cognition has potential for enhancing our understanding of both. Certainly at this particular point in accounting history, as standard setters seem to be moving ever closer to implementing some version of a principles-based accounting regime versus our current rules-based accounting regime, it is worthwhile to contemplate the conscious and subconscious effects of cognitive processes on how individuals perceive financial information.

  15. Conjuring a Reality: The Magic of the Practice of Accounting

    Directory of Open Access Journals (Sweden)

    Stacy A. Mastrolia

    2014-09-01

    Full Text Available Purpose: Recently, magic has been given increasing attention by psychologists for what it can reveal about how the human cognitive system works. This paper examines whether these same cognitive processes are at play in another arena, specifi cally, the presentation of financial accounting  information. Approach: The authors reviewed the fi ndings of cognitive scientists from their studies of magicians and applied these to the activities of professional accountants. Findings: Specifi c cognitive processes which magicians and accountants take advantage of, explicitly for one and implicitly for the other, are the same: good continuation, habituation, and attentional capture. Value: Further research regarding such interactions between accounting and cognition has potential for enhancing our understanding of both. Certainly at this particular point in accounting history, as standard setters seem to be moving ever closer to implementing some version of a principles-based accounting regime versus our current rules-based accounting regime, it is worthwhile to contemplate the conscious and subconscious effects of cognitive processes on how individuals perceive financial information.

  16. PG 1553+113: Five Years of Observations with MAGIC

    Science.gov (United States)

    Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.; Antoranz, P.; Asensio, M.; Backes, M.; Barrio, J. A.; Bastieri, D.; Becerra González, J.; Bednarek, W.; Berdyugin, A.; Berger, K.; Bernardini, E.; Biland, A.; Blanch, O.; Bock, R. K.; Boller, A.; Bonnoli, G.; Borla Tridon, D.; Braun, I.; Bretz, T.; Cañellas, A.; Carmona, E.; Carosi, A.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Cossio, L.; Covino, S.; Dazzi, F.; De Angelis, A.; De Caneva, G.; De Cea del Pozo, E.; De Lotto, B.; Delgado Mendez, C.; Diago Ortega, A.; Doert, M.; Domínguez, A.; Dominis Prester, D.; Dorner, D.; Doro, M.; Elsaesser, D.; Ferenc, D.; Fonseca, M. V.; Font, L.; Fruck, C.; García López, R. J.; Garczarczyk, M.; Garrido, D.; Giavitto, G.; Godinović, N.; Hadasch, D.; Häfner, D.; Herrero, A.; Hildebrand, D.; Höhne-Mönch, D.; Hose, J.; Hrupec, D.; Huber, B.; Jogler, T.; Kellermann, H.; Klepser, S.; Krähenbühl, T.; Krause, J.; La Barbera, A.; Lelas, D.; Leonardo, E.; Lindfors, E.; Lombardi, S.; López, M.; López-Oramas, A.; Lorenz, E.; Makariev, M.; Maneva, G.; Mankuzhiyil, N.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Meucci, M.; Miranda, J. M.; Mirzoyan, R.; Miyamoto, H.; Moldón, J.; Moralejo, A.; Munar-Adrover, P.; Nieto, D.; Nilsson, K.; Orito, R.; Oya, I.; Paneque, D.; Paoletti, R.; Pardo, S.; Paredes, J. M.; Partini, S.; Pasanen, M.; Pauss, F.; Perez-Torres, M. A.; Persic, M.; Peruzzo, L.; Pilia, M.; Pochon, J.; Prada, F.; Prada Moroni, P. G.; Prandini, E.; Puljak, I.; Reichardt, I.; Reinthal, R.; Rhode, W.; Ribó, M.; Rico, J.; Rügamer, S.; Saggion, A.; Saito, K.; Saito, T. Y.; Salvati, M.; Satalecka, K.; Scalzotto, V.; Scapin, V.; Schultz, C.; Schweizer, T.; Shayduk, M.; Shore, S. N.; Sillanpää, A.; Sitarek, J.; Sobczynska, D.; Spanier, F.; Spiro, S.; Stamatescu, V.; Stamerra, A.; Steinke, B.; Storz, J.; Strah, N.; Surić, T.; Takalo, L.; Takami, H.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Tescaro, D.; Teshima, M.; Tibolla, O.; Torres, D. F.; Treves, A.; Uellenbeck, M.; Vankov, H.; Vogler, P.; Wagner, R. M.; Weitzel, Q.; Zabalza, V.; Zandanel, F.; Zanin, R.; Buson, S.; Horan, D.; Larsson, S.; D'Ammando, F.

    2012-03-01

    We present the results of five years (2005-2009) of MAGIC observations of the BL Lac object PG 1553+113 at very high energies (VHEs; E > 100 GeV). Power-law fits of the individual years are compatible with a steady mean photon index Γ = 4.27 ± 0.14. In the last three years of data, the flux level above 150 GeV shows a clear variability (probability of constant flux < 0.001%). The flux variations are modest, lying in the range from 4% to 11% of the Crab Nebula flux. Simultaneous optical data also show only modest variability that seems to be correlated with VHE gamma-ray variability. We also performed a temporal analysis of (all available) simultaneous Fermi/Large Area Telescope data of PG 1553+113 above 1 GeV, which reveals hints of variability in the 2008-2009 sample. Finally, we present a combination of the mean spectrum measured at VHEs with archival data available for other wavelengths. The mean spectral energy distribution can be modeled with a one-zone synchrotron self-Compton model, which gives the main physical parameters governing the VHE emission in the blazar jet.

  17. MagIC: Geomagnetic Applications from Earth History to Archeology

    Science.gov (United States)

    Constable, C.; Tauxe, L.; Koppers, A.; Minnett, R.; Jarboe, N.

    2016-12-01

    Major scientific challenges increasingly require an interdisciplinary approach, and highlight the need for open archives, incorporating visualization and analysis tools that are flexible enough to address novel research problems. Increasingly modern standards for publication are (or should be) demanding direct links to data, data citations, and adequate documentation that allow other researchers direct access to the fundamental measurements and analyses producing the results. Carefully documented metadata are essential and data models may need considerable complexity to accommodate re-use of observations originally collected with a different purpose in mind. The Magnetics Information Consortium (MagIC) provides an online home for all kinds of paleo-, archeo-magnetic, rock, and environmental magnetic data, from documentation of fieldwork, through lab protocols, to interpretations in terms of geomagnetic history. Examples of their application to understanding geomagnetic field behavior, archeological dating, and voyages of exploration to discover America will be used to highlight best practices and illustrate unexpected benefits of data archived using best practices with the goal of maintaining high standards for reproducibility.

  18. Neutron interaction with doubly-magic {sup 40}Ca

    Energy Technology Data Exchange (ETDEWEB)

    Smith, A.B. [Argonne National Lab., IL (United States)]|[Univ. of Arizona, Tucson, AZ (United States)

    1993-11-01

    Differential neutron elastic and inelastic-scattering cross sections of elemental calcium (96.94% doubly-magic {sup 40}Ca) are measured from {approx} 1.5 to 10 MeV with sufficient detail to determine their energy-averaged behavior in the highly fluctuating environment. These results, combined with values previously reported in the literature, are assessed in the contexts of optical-statistical, dispersive optical, and coupled-channels models, applicable to the energy domain 0 {yields} 30+ MeV, with particular emphasis on the lower energies where the interpretations are sensitive to the dispersion relationship and the effective mass. The interpretations define the energy dependencies of the potential parameters (resolving prior ambiguities), suggest that previous estimates of the prominent low-energy (n,p) and (n,a) reactions are too large, reasonably describe observables to at least 30 MeV, and provide a vehicle for extrapolation into the bound-state regime that gives a good description of hole- and particle-state binding energies. The resulting real-potential parameters (in contrast to many {sup 40}Ca parameters reported in the literature) are shown consistent with global trends.

  19. Relative suppression of magical thinking: a transcranial magnetic stimulation study.

    Science.gov (United States)

    Bell, Vaughan; Reddy, Venu; Halligan, Peter; Kirov, George; Ellis, Hadyn

    2007-05-01

    The tendency to perceive meaning in noise (apophenia) has been linked to "magical thinking" (MT), a distinctive form of thinking associated with a range of normal cognitive styles, anomalous perceptual experiences and frank psychosis. Important aspects of MT include the propensity to imbue meaning or causality to events that might otherwise be considered coincidental. Structures in the lateral temporal lobes have been hypothesised to be involved in both the clinical and nonclinical aspects of MT. Accordingly, in this study we used single-pulse transcranial magnetic stimulation (TMS) to stimulate either the left or right lateral temporal areas, or the vertex, of 12 healthy participants (balanced for similar levels of MT, delusional ideation and temporal lobe disturbance) while they were required to indicate if they had "detected" pictures, claimed to be present by the experimenters, in visual noise. Relative to the vertex, TMS inhibition of the left lateral temporal area produced significant reduced tendency to report meaningful information, suggesting that left lateral temporal activation may be more important in MT and therefore producing and supporting anomalous beliefs and experiences. The effect cannot simply be explained by TMS induced cognitive slowing as reaction times were not affected.

  20. Neutrino parameters with magical beta-beam at INO

    Energy Technology Data Exchange (ETDEWEB)

    Agarwalla, Sanjib Kumar; Choubey, Sandhya; Raychaudhuri, Amitava [Harish-Chandra Research Institute, Allahabad (India)], E-mail: sanjib@hri.res.in

    2008-11-01

    We have studied the physics reach of an experiment where neutrinos produced in a beta-beam facility at CERN are observed in a large magnetized iron calorimeter (ICAL) at the India-based Neutrino Observatory (INO). The idea of beta-beam is based on the production of a pure, intense, collimated beam of electron neutrinos or their antiparticles via the beta decay of accelerated radioactive ions circulating in a storage ring. Interestingly, the CERN-INO distance of 7152 km happens to be tantalizingly close to the so-called 'magic' baseline where the sensitivity to the neutrino mass ordering (sign of {delta}m{sup 2}{sub 31} {identical_to} m{sup 2}{sub 3} - m{sup 2}{sub 1}) and more importantly, {theta}{sub 13}, goes up significantly, while the sensitivity to the unknown CP phase is absent. This permits such an experiment involving the golden P{sub e{mu}} channel to make precise measurements of the mixing angle {theta}{sub 13} and neutrino mass hierarchy avoiding the issues of intrinsic degeneracies and correlations which plague other baselines.

  1. High-pressure magic angle spinning nuclear magnetic resonance

    Science.gov (United States)

    Hoyt, David W.; Turcu, Romulus V. F.; Sears, Jesse A.; Rosso, Kevin M.; Burton, Sarah D.; Felmy, Andrew R.; Hu, Jian Zhi

    2011-10-01

    A high-pressure magic angle spinning (MAS) NMR capability, consisting of a reusable high-pressure MAS rotor, a high-pressure rotor loading/reaction chamber for in situ sealing and re-opening of the high-pressure MAS rotor, and a MAS probe with a localized RF coil for background signal suppression, is reported. The unusual technical challenges associated with development of a reusable high-pressure MAS rotor are addressed in part by modifying standard ceramics for the rotor sleeve by abrading the internal surface at both ends of the cylinder. In this way, not only is the advantage of ceramic cylinders for withstanding very high-pressure utilized, but also plastic bushings can be glued tightly in place so that other removable plastic sealing mechanisms/components and O-rings can be mounted to create the desired high-pressure seal. Using this strategy, sealed internal pressures exceeding 150 bars have been achieved and sustained under ambient external pressure with minimal loss of pressure for 72 h. As an application example, in situ13C MAS NMR studies of mineral carbonation reaction intermediates and final products of forsterite (Mg 2SiO 4) reacted with supercritical CO 2 and H 2O at 150 bar and 50 °C are reported, with relevance to geological sequestration of carbon dioxide.

  2. High-pressure magic angle spinning nuclear magnetic resonance

    Energy Technology Data Exchange (ETDEWEB)

    Hoyt, David W.; Turcu, Romulus V. F.; Sears, Jesse A.; Rosso, Kevin M.; Burton, Sarah D.; Felmy, Andrew R.; Hu, Jian Zhi

    2011-10-01

    A high-pressure magic angle spinning (MAS) NMR capability, consisting of a reusable high-pressure MAS rotor, a high-pressure rotor loading/reaction chamber for in situ sealing and re-opening of the high-pressure MAS rotor, and a MAS probe with a localized RF coil for background signal suppression, is reported. The unusual technical challenges associated with development of a reusable high-pressure MAS rotor are addressed in part by modifying standard ceramics for the rotor sleeve by abrading the internal surface at both ends of the cylinder. In this way, not only is the advantage of ceramic cylinders for withstanding very high-pressure utilized, but also plastic bushings can be glued tightly in place so that other removable plastic sealing mechanisms/components and O-rings can be mounted to create the desired high-pressure seal. Using this strategy, sealed internal pressures exceeding 150 bars have been achieved and sustained under ambient external pressure with minimal loss of pressure for 72 h. Finally, as an application example, in situ13C MAS NMR studies of mineral carbonation reaction intermediates and final products of forsterite (Mg2SiO4) reacted with supercritical CO2 and H2O at 150 bar and 50 °C are reported, with relevance to geological sequestration of carbon dioxide.

  3. Aplikasi Augmented Reality Magic Book Pengenalan Binatang Untuk Siswa TK

    Directory of Open Access Journals (Sweden)

    I Dewa Gede Wahya Dhiyatmika

    2015-11-01

    Full Text Available Augmented Reality is a technology combining 2 or 3 dimensional virtual objects into a real 3 dimensional environment and projected real time. Children at 5 to 7 years old, are in their golden age where they are getting more sensitive to stimulus and easier on learning new things, that they are easier on receiving new and interesting things. So, it seems to be important for children at this age to learn about living creature around them, one of it is learning about animals. Media about animal introduction for kindergarten students, such as book with 2 dimensional animal form, seems like incapable yet to excite children on learning about animal species. This Augmented Reality Magic Book Animals Introduction Application for Kindergarten Students has been developed using Android base with marker that identified 3 dimensional animal objects, their voices, and the informations about the animals using Augmented Reality Technology. Augmented Reality technology makes animal introduction to children become easier and more interesting, this application shows 3 dimensional form of animals and their voices with more innovative interface using Smartphone.

  4. Magie, Hexen und Strafverfolgung Magic, Witches, and Prosecution

    Directory of Open Access Journals (Sweden)

    Arne Duncker

    2008-07-01

    Full Text Available In der Reihe „Historische Einführungen“ des Campus Verlags versucht Johannes Dillinger, die Entwicklung von Magie- und Hexereivorstellungen vom Mittelalter bis zur Gegenwart zu beschreiben. Die Hexenverfolgungen und -prozesse der Frühen Neuzeit und ihre Voraussetzungen nehmen dabei etwas mehr als die Hälfte der Gesamtdarstellung ein. Das Buch bietet in erster Linie eine Einführung in die neuere und neueste Sekundärliteratur und die dort besprochenen aktuellen Streitpunkte. In einem Teilabschnitt wird auch auf die Hexenverfolgung als Frauenverfolgung eingegangen und nach Ursachen für den hohen Frauenanteil unter den Verfolgten geforscht.Johannes Dillinger attempts to describe the development of the belief in magic and witches from the Middle Ages to today in his book published in the Campus Verlag series “Introductions to History.” Witch persecutions and prosecutions of the Early Modern period and their preconditions take up more than half of the overall study. In particular, the book provides an introduction to the newer and newest secondary literature and to those issues discussed in this literature. One section also approaches the persecution of witches as the persecution of women and searches for the reasons behind the high percentage of women among the persecuted.

  5. Beyond magic traits: Multimodal mating cues in Heliconius butterflies.

    Science.gov (United States)

    Mérot, Claire; Frérot, Brigitte; Leppik, Ene; Joron, Mathieu

    2015-11-01

    Species coexistence involves the evolution of reproductive barriers opposing gene flow. Heliconius butterflies display colorful patterns affecting mate choice and survival through warning signaling and mimicry. These patterns are called "magic traits" for speciation because divergent natural selection may promote mimicry shifts in pattern whose role as mating cue facilitates reproductive isolation. By contrast, between comimetic species, natural selection promotes pattern convergence. We addressed whether visual convergence interferes with reproductive isolation by testing for sexual isolation between two closely related species with similar patterns, H. timareta thelxinoe and H. melpomene amaryllis. Experiments with models confirmed visual attraction based on wing phenotype, leading to indiscriminate approach. Nevertheless, mate choice experiments showed assortative mating. Monitoring male behavior toward live females revealed asymmetry in male preference, H. melpomene males courting both species equally while H. timareta males strongly preferred conspecifics. Experiments with hybrid males suggested an important genetic component for such asymmetry. Behavioral observations support a key role for short-distance cues in determining male choice in H. timareta. Scents extracts from wings and genitalia revealed interspecific divergence in chemical signatures, and hybrid female scent composition was significantly associated with courtship intensity by H. timareta males, providing candidate chemical mating cues involved in sexual isolation. © 2015 The Author(s). Evolution © 2015 The Society for the Study of Evolution.

  6. The magic dance of the alarmones (p)ppGpp.

    Science.gov (United States)

    Steinchen, Wieland; Bange, Gert

    2016-08-01

    The alarmones (p)ppGpp are important second messengers that orchestrate pleiotropic adaptations of bacteria and plant chloroplasts in response to starvation and stress. Here, we review our structural and mechanistic knowledge on (p)ppGpp metabolism including their synthesis, degradation and interconversion by a highly diverse set of enzymes. Increasing structural information shows how (p)ppGpp interacts with an incredibly diverse set of different targets that are essential for replication, transcription, translation, ribosome assembly and metabolism. This raises the question how the chemically rather simple (p)ppGpp is able to interact with these different targets? Structural analysis shows that the diversity of (p)ppGpp interaction with cellular targets critically relies on the conformational flexibility of the 3' and 5' phosphate moieties allowing alarmones to efficiently modulate the activity of target structures in a broad concentration range. Current approaches in the design of (p)ppGpp-analogs as future antibiotics might be aided by the comprehension of conformational flexibility exhibited by the magic dancers (p)ppGpp.

  7. Production of heavy water

    Energy Technology Data Exchange (ETDEWEB)

    Spencer, Larry S.; Brown, Sam W.; Phillips, Michael R.

    2017-06-06

    Disclosed are methods and apparatuses for producing heavy water. In one embodiment, a catalyst is treated with high purity air or a mixture of gaseous nitrogen and oxygen with gaseous deuterium all together flowing over the catalyst to produce the heavy water. In an alternate embodiment, the deuterium is combusted to form the heavy water. In an alternate embodiment, gaseous deuterium and gaseous oxygen is flowed into a fuel cell to produce the heavy water. In various embodiments, the deuterium may be produced by a thermal decomposition and distillation process that involves heating solid lithium deuteride to form liquid lithium deuteride and then extracting the gaseous deuterium from the liquid lithium deuteride.

  8. 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

  9. The LocaL Tradition of Magical Practices in Banten society

    Directory of Open Access Journals (Sweden)

    Ayatullah Humaeni

    2012-12-01

    Full Text Available This article aims to discuss the cultural phenomenon of magical practices in the Muslim society of Banten which still exists up to the present. It is a part of my MA thesis research that has been combined with my recent field research using ethnography method based on the anthropological approach. Magical practices becomes cultural identity for Bantenese society.  Several sources on Banten mention that Banten as a central spot for magical sciences, besides it is also well- known as a religious area. The magical practices are still regarded important for Bantenese people, especially who live in the villages to solve their practical problems in their social life. Magic is a socio-religious phenomenon which has long, well-established roots in Banten society. It  is  traceable from many literatures that describes the uniqueness of Bantenese’s culture. Besides other magical practices debus is the most noticeable appearance of the magical tradition in Banten since the sultanate period until nowadays. The existence of debus Banten and other kinds of magical practices in Banten has strengthened the reputation of Banten as if ‘a haven of magical sciences’.   Tulisan ini mencoba mendiskusikan tentang fenomena kultural mengenai praktek magis pada masyarakat Muslim Banten yang masih ada hingga saat ini. Artikel ini merupakan bagian dari tesis Master saya yang sudah dikombinasikan dengan penelitian lapangan baru-baru ini dengan menggunakan metode etnografi berdasarkan pendekatan antropologis. Praktek magis sudah menjadi identitas kultural bagi masyarakat Banten. Beberapa sumber menyebut Banten sebagai pusat ilmu-ilmu gaib, di samping dikenal sebagai daerah yang religius. Praktek magis masih dianggap penting bagi masyarakat Banten, khususnya yang tinggal di pedesaan untuk menyelesaikan masalah-masalah praktis dalam kehidupan sosial mereka. Magis adalah sebuah fenomena sosio-kultural yang memiliki akar yang cukup lama dan sudah berakar kuat dalam

  10. QCD Radiation off Heavy Particles

    CERN Document Server

    Norrbin, E

    2001-01-01

    We study QCD radiation in decay processes involving heavy particles. As input, the first-order gluon emission rate is calculated in a number of reactions, and comparisons of the energy flow patterns show a non-negligible process dependence. To proceed further, the QCD parton shower language offers a convenient approach to include multi-gluon emission effects, and to describe exclusive event properties. An existing shower algorithm is extended to take into account the process-dependent mass, spin and parity effects, as given by the matrix element calculations. This allows an improved description of multiple gluon emission effects off b and t quarks, and also off nonstandard particles like squarks and gluinos. Phenomenological applications are presented for bottom production at LEP, Higgs particle decay to heavy flavours, top production and decay at linear colliders, and some simple supersymmetric processes.

  11. Nice numbers

    CERN Document Server

    Barnes, John

    2016-01-01

    In this intriguing book, John Barnes takes us on a journey through aspects of numbers much as he took us on a geometrical journey in Gems of Geometry. Similarly originating from a series of lectures for adult students at Reading and Oxford University, this book touches a variety of amusing and fascinating topics regarding numbers and their uses both ancient and modern. The author intrigues and challenges his audience with both fundamental number topics such as prime numbers and cryptography, and themes of daily needs and pleasures such as counting one's assets, keeping track of time, and enjoying music. Puzzles and exercises at the end of each lecture offer additional inspiration, and numerous illustrations accompany the reader. Furthermore, a number of appendices provides in-depth insights into diverse topics such as Pascal’s triangle, the Rubik cube, Mersenne’s curious keyboards, and many others. A theme running through is the thought of what is our favourite number. Written in an engaging and witty sty...

  12. Alpha-cluster preformation factor within cluster-formation model for odd-A and odd-odd heavy nuclei

    Science.gov (United States)

    Saleh Ahmed, Saad M.

    2017-06-01

    The alpha-cluster probability that represents the preformation of alpha particle in alpha-decay nuclei was determined for high-intensity alpha-decay mode odd-A and odd-odd heavy nuclei, 82 work. Our previous successful determination of phenomenological values of alpha-cluster preformation factors for even-even nuclei motivated us to expand the work to cover other types of nuclei. The formation energy of interior alpha cluster needed to be derived for the different nuclear systems with considering the unpaired-nucleon effect. The results showed the phenomenological value of alpha preformation probability and reflected the unpaired nucleon effect and the magic and sub-magic effects in nuclei. These results and their analyses presented are very useful for future work concerning the calculation of the alpha decay constants and the progress of its theory.

  13. Magic Angle Spinning NMR Structure Determination of Proteins from Pseudocontact Shifts

    KAUST Repository

    Li, Jianping

    2013-06-05

    Magic angle spinning solid-state NMR is a unique technique to study atomic-resolution structure of biomacromolecules which resist crystallization or are too large to study by solution NMR techniques. However, difficulties in obtaining sufficient number of long-range distance restraints using dipolar coupling based spectra hamper the process of structure determination of proteins in solid-state NMR. In this study it is shown that high-resolution structure of proteins in solid phase can be determined without the use of traditional dipolar-dipolar coupling based distance restraints by combining the measurements of pseudocontact shifts (PCSs) with Rosetta calculations. The PCSs were generated by chelating exogenous paramagnetic metal ions to a tag 4-mercaptomethyl-dipicolinic acid, which is covalently attached to different residue sites in a 56-residue immunoglobulin-binding domain of protein G (GB1). The long-range structural restraints with metal-nucleus distance of up to ∼20 Å are quantitatively extracted from experimentally observed PCSs, and these are in good agreement with the distances back-calculated using an X-ray structure model. Moreover, we demonstrate that using several paramagnetic ions with varied paramagnetic susceptibilities as well as the introduction of paramagnetic labels at different sites can dramatically increase the number of long-range restraints and cover different regions of the protein. The structure generated from solid-state NMR PCSs restraints combined with Rosetta calculations has 0.7 Å root-mean-square deviation relative to X-ray structure. © 2013 American Chemical Society.

  14. Heavy Dynamical Fermions in Lattice QCD

    CERN Document Server

    Hasenfratz, Anna; Hasenfratz, Anna; Grand, Thomas A. De

    1994-01-01

    It is expected that the only effect of heavy dynamical fermions in QCD is to renormalize the gauge coupling. We derive a simple expression for the shift in the gauge coupling induced by $N_f$ flavors of heavy fermions. We compare this formula to the shift in the gauge coupling at which the confinement-deconfinement phase transition occurs (at fixed lattice size) from numerical simulations as a function of quark mass and $N_f$. We find remarkable agreement with our expression down to a fairly light quark mass. However, simulations with eight heavy flavors and two light flavors show that the eight flavors do more than just shift the gauge coupling. We observe confinement-deconfinement transitions at $\\beta=0$ induced by a large number of heavy quarks. We comment on the relevance of our results to contemporary simulations of QCD which include dynamical fermions.

  15. Pion mean fields and heavy baryons

    CERN Document Server

    Yang, Ghil-Seok; Polyakov, Maxim V; Praszałowicz, Michał

    2016-01-01

    We show that the masses of the lowest-lying heavy baryons can be very well described in a pion mean-field approach. We consider a heavy baryon as a system consisting of the $N_c-1$ light quarks that induce the pion mean field, and a heavy quark as a static color source under the influence of this mean field. In this approach we derive a number of \\textit{model-independent} relations and calculate the heavy baryon masses using those of the lowest-lying light baryons as input. The results are in remarkable agreement with the experimental data. In addition, the mass of the $\\Omega_b^*$ baryon is predicted.

  16. The Ghost in the Machine: Why and How the Belief in Magic Survives in the Rational Mind

    Science.gov (United States)

    Subbotsky, Eugene

    2011-01-01

    Since the time of Galileo (1564-1642), Western civilization has increasingly fallen under the spell of science. Despite this fact, anthropological and psychological research has shown that magical beliefs are present in both children and adults in modern industrial cultures. How can a belief in magic coexist with a belief in science in the mind of…

  17. Normal Fuzzy Number Evaluationon Soil Heavy Metals in the Water-Level Fluctuation Zones and Supralittoral Reference Zones of Xiangxi River%香溪河消落带及其上缘土壤重金属的正态模糊数评价

    Institute of Scientific and Technical Information of China (English)

    张海锋; 李晓玲; 戴泽龙; 胥焘; 罗玉红; 黄应平

    2016-01-01

    分别于2014年4,9月和2015年2月对三峡库区香溪河消落带(海拔165~175 m)及其上缘(海拔175~185 m)野外采集土样108个,采用原子吸收光谱法测定土壤重金属(Cr,Pb,Cu和Cd)的含量,用模糊污染指数模型-正态模糊数的地累积指数对不同出露时期的消落带及其上缘的土壤重金属含量进行评价.对出露前期(2014年4月),出露后期(2014年9月)和水淹出露期(2015年2月)的消落带上层土(0~20 cm)和下层土(20~40cm)的分析表明,Cd含量在出露后期达到最大值(上、下层土壤含量分别为1.21,0.94 mg·kg-1),在水淹出露时达到最小值(上、下层土壤含量分别为1.04,0.90 mg·kg-1).基于该方法评价结果,香溪河消落带及其上缘中Cd为中度污染,Cu和Pb均为轻度污染,Cr为清洁水平,综合评价为轻度污染等级.%A total of 108 soil samples got in April,September 2014 and February 2015 were collected from the water level fluctuation zones (WLFZs,165-175 m above MSL) and supralittoral reference zones(SRZs,175-185 m above MSL) along Xiangxi River,Three Gorges Reservoir.The heavy metal (Cr,Pb,Cu and Cd) concentrations of the soils were determined by the graphite furnace atomic absorption spectroscopy(GFAAS).A fuzzy model for the pollution index called geo-accumulation indexes based on normal fuzzy numbers (GIFNs) was employed for the determination of element contamination in different periods of exposure to heavy metals in the WLFZs and SRZs.The results showed that among the early exposure period (April 2014),the late exposure period (in September 2014) and the exposure after submergence (February 2015) with topsoil (0-20 cm) and subsoil (20-40 cm),Cd content reached the maximum value (the topsoil and subsoil heavy metal content were 1.21,0.94 mg · kg-1) in the late exposure period and reached a minimum value in the exposure period after submergence (the topsoil and subsoil heavy metal content were 1.04,0.90 mg · kg-1);Based on GIFNs for

  18. Transcendental numbers

    CERN Document Server

    Murty, M Ram

    2014-01-01

    This book provides an introduction to the topic of transcendental numbers for upper-level undergraduate and graduate students. The text is constructed to support a full course on the subject, including descriptions of both relevant theorems and their applications. While the first part of the book focuses on introducing key concepts, the second part presents more complex material, including applications of Baker’s theorem, Schanuel’s conjecture, and Schneider’s theorem. These later chapters may be of interest to researchers interested in examining the relationship between transcendence and L-functions. Readers of this text should possess basic knowledge of complex analysis and elementary algebraic number theory.

  19. A novel LIDAR-based Atmospheric Calibration Method for Improving the Data Analysis of MAGIC

    CERN Document Server

    Fruck, Christian; Zanin, Roberta; Dorner, Daniela; Garrido, Daniel; Mirzoyan, Razmik; Font, Lluis

    2014-01-01

    A new method for analyzing the returns of the custom-made 'micro'-LIDAR system, which is operated along with the two MAGIC telescopes, allows to apply atmospheric corrections in the MAGIC data analysis chain. Such corrections make it possible to extend the effective observation time of MAGIC under adverse atmospheric conditions and reduce the systematic errors of energy and flux in the data analysis. LIDAR provides a range-resolved atmospheric backscatter profile from which the extinction of Cherenkov light from air shower events can be estimated. Knowledge of the extinction can allow to reconstruct the true image parameters, including energy and flux. Our final goal is to recover the source-intrinsic energy spectrum also for data affected by atmospheric extinction from aerosol layers, such as clouds.

  20. The Effects of Social Misdirection on Magic Tricks: How Deceived and Undeceived Groups Differ

    Directory of Open Access Journals (Sweden)

    Ryo Tachibana

    2014-05-01

    Full Text Available Characteristics of perception and cognition in our daily lives can be elucidated through studying misdirection, a technique used by magicians to manipulate attention. Recent findings on the effects of social misdirection induced by joint attention have been disputed, and differences between deceived (failed to detect the magic trick and undeceived (detected the magic trick groups remain unclear. To examine how social misdirection affects deceived and undeceived groups, we showed participants movie clips of the “cups & balls,” a classic magic trick, and measured participants' eye positions (i.e. where participants looked while viewing the clips using an eye tracker. We found that the undeceived group looked less at the magician's face than the deceived group. These results indicate that deceived individuals have difficulty trying not to allocate attention to the face. We conclude that social misdirection captures attention, influencing the emergence of deception.

  1. Charms in the Context of Magic Practice. The Case of Slovenia

    Directory of Open Access Journals (Sweden)

    Monika Kropej

    2003-10-01

    Full Text Available In Slovenia, charms or invocations are one- or two-strophe formulae that the medicine man or woman used at addressing the powers beyond to procure healing or to influence certain natural processes. They are as if a bridge between this world and the other, helping achieve to something on clearly supernatural or magical grounds. The following paper provides a brief insight into magical folk traditions as preserved in Slovene oral and written sources. The present article gives a short overview of contemporary magical practices in Slovenia, introducing a healer with inherited gift and words and her usual healing methods. I will also present a systematisation of Slovenian invocations with text samples and some cosmological principles as reflected in charms.

  2. Doping of magic nanoclusters in the submonolayer In/Si(100) system.

    Science.gov (United States)

    Kotlyar, V G; Zotov, A V; Saranin, A A; Chukurov, E N; Kasyanova, T V; Cherevik, M A; Pisarenko, I V; Okado, H; Katayama, M; Oura, K; Lifshits, V G

    2003-07-11

    Si(100)4 x 3-In reconstruction is essentially a superlattice of magic (identical-size) Si7In6 nanoclusters. Using scanning tunneling microscopy (STM) observations, we have found that under appropriate growth conditions up to 35% of these clusters can be modified; namely, two Si atoms in the cluster can be replaced by two In atoms, thus forming a Si5In8 cluster. This modification can be considered as a doping of the magic cluster, as it changes the electronic properties of the cluster from semiconducting towards metallic. The doped cluster is less rigid than the ordinary one and swings in the electrical field of the STM tip. The atomic structure and stability of the doped magic cluster have been examined using first-principles total-energy calculations.

  3. [X-rays between art and science in The Magic Mountain].

    Science.gov (United States)

    van Dijck, J

    2000-01-01

    When x-ray, in the early 1900s, was hailed as the new instrument of objective verification and indisputable proof, it signaled the reign of the visual over the other senses of empirical verification, such as sound and touch. The extent of visual evidence was believed to be all- encompassing: x-rays were supposedly a sort of super photography that could prove the existence of immaterial substances, the materiality of things heretofore unseen. Thomas Mann's The Magic Mountain (1924) elaborates on three invisible aspects of the body: the verification of disease (tuberculosis), the visualization of intimate feelings such as love, and the ultimate proof of the spirtual self after death. In all three areas - medical, psychological and metaphysical - the x-ray was thought to be a magical instrument that could render the body (and soul) transparent. The Magic Mountain does not simply reflect these beliefs, but problematizes cultural conceptions inspired by medical-scientific axiomas.

  4. Magic ratios for connectivity-driven electrical conductance of graphene-like molecules.

    Science.gov (United States)

    Geng, Yan; Sangtarash, Sara; Huang, Cancan; Sadeghi, Hatef; Fu, Yongchun; Hong, Wenjing; Wandlowski, Thomas; Decurtins, Silvio; Lambert, Colin J; Liu, Shi-Xia

    2015-04-08

    Experiments using a mechanically controlled break junction and calculations based on density functional theory demonstrate a new magic ratio rule (MRR) that captures the contribution of connectivity to the electrical conductance of graphene-like aromatic molecules. When one electrode is connected to a site i and the other is connected to a site i' of a particular molecule, we assign the molecule a "magic integer" Mii'. Two molecules with the same aromatic core but different pairs of electrode connection sites (i,i' and j,j', respectively) possess different magic integers Mii' and Mjj'. On the basis of connectivity alone, we predict that when the coupling to electrodes is weak and the Fermi energy of the electrodes lies close to the center of the HOMO-LUMO gap, the ratio of their conductances is equal to (Mii'/Mjj')(2). The MRR is exact for a tight-binding representation of a molecule and a qualitative guide for real molecules.

  5. The resurrection of a magical reality: treatment of functional migraine in a child.

    Science.gov (United States)

    O'Connor, J J

    1984-12-01

    A magical world view and logic were used in the treatment of a 10-year-old girl who was referred because of suicidal threats due to migrainous pain. The treatment consisted of a one-session intervention with three-week, six-month, and one-year follow-up indicating elimination of migraine. Within a strategic family therapy, a magical ritual was prescribed that derived from the preoperational logic explicated by Piaget and from the healing practices described in anthropological studies. Such a ritual casts the symptom in a different context, alters the meaning of migraine to the family system, and leads to different interactional patterns. Piaget's theory and anthropological data are discussed as sources of a magical world view to help families and children disengage from a symptomatic system of interactions.

  6. Black magic and illness in a Malaysian Chinese community.

    Science.gov (United States)

    Mo, B

    1984-01-01

    Ah Yuk Je is a successful Hakka Chinese spirit medium practicing in a small Chinese community in Malaysia. Her clientele consists largely of young children suffering from a culturally specific condition called haak geng or 'soul loss' and women concerned about infertility, prenatal problems and errant spouses. While in a trance state, assisted by her tutelary spirits, she diagnoses, prescribes and treats illnesses. Her treatment includes naturalistic and magico-religious elements such as 'cooling' herbal teas, tonics to strengthen the body, rituals and amulets. Because Ah Yuk Je is a wife and mother, women find her sympathetic and astute at solving family problems. When faced with an illness herself, which she suspects to be the result of kong tao (black magic) instigated by someone in her own village, she seeks assistance from a healer outside her own ethnic group as well as outside her community. Four important factors influence Ah Yuk Je's decision to seek out this healer. The first two, recommendation from a trusted friend and a positive previous experience, are obvious, and require no further discussion. The remaining factors are the special nature of the illness, which requires treatment from a specialist, and her practice as a spirit medium. Successful spirit mediums are perceived to have a certain immunity to and control over supernatural forces. Thus the need for secrecy when a spirit medium becomes the victim of evil forces. She is able to preserve her professional reputation by consulting someone outside her ethnic group of potential clients as well as outside her physical community.

  7. Numbers, Please!

    Science.gov (United States)

    Thelin, John R.

    2013-01-01

    What topic would you choose if you had the luxury of writing forever? In this article, John Thelin provides his response: He would opt to write about the history of higher education in a way that relies on quantitative data. "Numbers, please!" is his research request in taking on a longitudinal study of colleges and universities over…

  8. Numbers, Please!

    Science.gov (United States)

    Thelin, John R.

    2013-01-01

    What topic would you choose if you had the luxury of writing forever? In this article, John Thelin provides his response: He would opt to write about the history of higher education in a way that relies on quantitative data. "Numbers, please!" is his research request in taking on a longitudinal study of colleges and universities over…

  9. Negative Numbers

    Science.gov (United States)

    Galbraith, Mary J.

    1974-01-01

    Examination of models for representing integers demonstrates that formal operational thought is required for establishing the operations on integers. Advocated is the use of many models for introducing negative numbers but, apart from addition, it is recommended that operations on integers be delayed until the formal operations stage. (JP)

  10. Dynamics of light, intermediate, heavy and superheavy nuclear systems formed in heavy-ion collisions

    Indian Academy of Sciences (India)

    Manoj K Sharma; Gurvinder Kaur

    2014-05-01

    The dynamical description of light, intermediate, heavy and superheavy nuclei formed in heavy-ion collisions is worked out using the dynamical cluster decay model (DCM), with reference to various effects such as deformation and orientation, temperature, angular momentum etc. Based on the quantum mechanical fragmentation theory (QMFT), DCM has been applied to understand the decay mechanism of a large number of nuclei formed in low-energy heavy-ion reactions. Various features related to the dynamics of competing decay modes of nuclear systems are explored by addressing the experimental data of a number of reactions in light, intermediate, heavy and superheavy mass regions. The DCM, being a non-statistical description for the decay of a compound nucleus, treats light particles (LPs) or equivalently evaporation residues (ERs), intermediate mass fragments (IMFs) and fission fragments on equal footing and hence, provides an alternative to the available statistical model approaches to address fusion–fission and related phenomena.

  11. Correlates of the multidimensional construct of hypnotizability: paranormal belief, fantasy proneness, magical ideation, and dissociation.

    Science.gov (United States)

    Dasse, Michelle N; Elkins, Gary R; Weaver, Charles A

    2015-01-01

    Hypnotizability is a multifaceted construct that may relate to multiple aspects of personality and beliefs. This study sought to address 4 known correlates of hypnotizability to aid in its understanding. Eighty undergraduates completed the Magical Ideation Scale (MIS), the Creative Experiences Questionnaire (CEQ), the Australian Sheep-Goat Scale (ASGS), and the Dissociative Experiences Scale (DES) and then were administered the Creative Imagination Scale (CIS). All 5 scales were significantly correlated. Participants higher in hypnotizability scored higher on the CEQ and the MIS. The findings demonstrate the influence of fantasy proneness and magical thinking on hypnotizability and support the theory that hypnotizability is a complex interaction of multiple traits.

  12. N=8 non-BPS Attractors, Fixed Scalars and Magic Supergravities

    CERN Document Server

    Ferrara, Sergio

    2008-01-01

    We analyze the Hessian matrix of the black hole potential of N=8, d=4 supergravity, and determine its rank at non-BPS critical points, relating the resulting spectrum to non-BPS solutions (with non-vanishing central charge) of N=2, d=4 magic supergravities and their ``mirror'' duals. We find agreement with the known degeneracy splitting of N=2 non-BPS spectrum of generic special Kahler geometries with cubic holomorphic prepotential. We also relate non-BPS critical points with vanishing central charge in N=2 magic supergravities to a particular reduction of the N=8, 1/8-BPS critical points.

  13. Design and Optimization of a Millimetre Wave Compact Folded Magic-T

    Directory of Open Access Journals (Sweden)

    Guang Hua

    2012-01-01

    Full Text Available A millimetre wave-folded magic-T junction compensated with metal cone is designed using a particle swarm optimization (PSO algorithm. An off-centred metallic frustum was used to enhance the bandwidth and a metallic post is used to compensate the mismatched E-arm. The geometrical parameters of the frustum and the post are optimized by PSO. The optimized magic-T for W-band application is designed and tested. The design features are simple in structure and easy to fabricate. The 2% bandwidth with centre frequency of 94 GHz and return loss less than −20 dB is achieved.

  14. Acidophilic Halophilic Microorganisms in Fluid Inclusions in Halite from Lake Magic, Western Australia

    OpenAIRE

    2013-01-01

    Lake Magic is one of the most extreme of hundreds of ephemeral acid-saline lakes in southern Western Australia. It has pH as low as 1.7, salinity as high as 32% total dissolved solids, temperatures ranging from 0°C to 50°C, and an unusually complex aqueous composition. Optical petrography, UV-vis petrography, and laser Raman spectrometry were used to detect microorganisms and organic compounds within primary fluid inclusions in modern bedded halite from Lake Magic. Rare prokaryotes appear as ...

  15. Analisis Dan Implementasi Algoritma Runut Balik (Backtracking) Pada Permainan Magic Square

    OpenAIRE

    Nasution, Muhammad Anggi Rivai

    2011-01-01

    Today, game has become a necessity in terms of entertainment and education. In this case writer is more likely to focus the game on the field of education in terms of mathematical logic. A game that is built from computed values of the order 4x4 matrix that has columns, rows, and diagonal if calculated every four boxes have the same results of great value in each column, row, and diagonal. So this game can be called a magic square game. Magic Square is a game to train reasoning to solve a pro...

  16. A Study on the Stream Cipher Embedded Magic Square of Random Access Files

    Science.gov (United States)

    Liu, Chenglian; Zhao, Jian-Ming; Rafsanjani, Marjan Kuchaki; Shen, Yijuan

    2011-09-01

    Magic square and stream cipher issues are both interesting and well-tried topics. In this paper, we are proposing a new scheme which streams cipher applications for random access files based on the magic square method. There are two thresholds required to secure our data, if using only decrypts by the stream cipher. It isn't to recovery original source. On other hand, we improve the model of cipher stream to strengthen and defend efficiently; it also was its own high speed and calculates to most parts of the key stream generator.

  17. A selection of problems in the theory of numbers popular lectures in mathematics

    CERN Document Server

    Sierpinski, Waclaw; Stark, M

    1964-01-01

    A Selection of Problems in the Theory of Numbers focuses on mathematical problems within the boundaries of geometry and arithmetic, including an introduction to prime numbers. This book discusses the conjecture of Goldbach; hypothesis of Gilbreath; decomposition of a natural number into prime factors; simple theorem of Fermat; and Lagrange's theorem. The decomposition of a prime number into the sum of two squares; quadratic residues; Mersenne numbers; solution of equations in prime numbers; and magic squares formed from prime numbers are also elaborated in this text. This publication is a good

  18. Spectroscopy of the doubly magic nucleus {sup 100}Sn and its decay

    Energy Technology Data Exchange (ETDEWEB)

    Hinke, Christoph B.

    2010-07-23

    The nucleus {sup 100}Sn has been the aim of a number of experimental approaches. It is of great interest for various reasons. It is presumably the heaviest particle-stable N=Z nucleus and at the same time doubly magic. Its beta decay is of particular importance because it is expected to be the purest Gamow-Teller decay in the nuclear chart and thus allows to study the question of the missing Gamow-Teller strength/the Gamow-Teller quenching due to core polarisation effects. From the beta-coincident decay spectroscopy of the daughter nucleus {sup 100}In information about the proton-neutron interaction in this region of the nuclear chart can be obtained. Simultaneously with the implantation of the nucleus in the detector setup after production the search for delayed gamma radiation from a predicted isomeric state in {sup 100}Sn could yield first insight into the structure of excited states in this exotic nucleus. This work presents investigation results concerning the spectroscopy of the doubly magic nucleus {sup 100}Sn and its decay. The experiment was performed in March 2008 at the accelerator facilities of the GSI Helmholtz Zentrum Darmstadt. The neutron deficient nucleus was produced in a projectile fragmentation reaction of a {sup 124}Xe primary beam impinging on a Beryllium target with an energy of 1 GeV x A. After a separation from other fragmentation products and a unique identification {sup 100}Sn was stopped in an implantation detector consisting of highly segmented silicon strip detectors for decay spectroscopy. Beside the determination of the half life it was possible to detect the total energy of the emitted particle radiation in the implantation detector as well as the emitted gamma radiation with a surrounding array of Germanium detectors. With a number of approximately 70 successfully observed decays of {sup 100}Sn a half life of T{sub 1/2}=1.16{+-}0.20s was obtained. The beta endpoint energy of the single channel decay yielded a value of E{sub {beta

  19. Síndrome de Behçet e policondrite recidivante: síndrome MAGIC Behçet's syndrome and relapsing polychondritis: MAGIC syndrome

    Directory of Open Access Journals (Sweden)

    Fabrício de Souza Neves

    2006-04-01

    Full Text Available Relatamos aqui o caso de um paciente masculino de 30 anos de idade, sexo masculino, com achados clínicos típicos da síndrome de Behçet (SB e da policondrite recidivante (PR sem, no entanto, preencher completamente os critérios de classificação para nenhuma das entidades isoladamente. O termo síndrome MAGIC (Mouth And Genital ulcers with Inflamed Cartilage tem sido usado para classificar pacientes semelhantes. Uma breve revisão dos casos previamente relatados também é apresentada.We describe a 30 years old man with typical features of both Behçet's syndrome and relapsing polychondritis but neither complete classification criteria. The term MAGIC syndrome (Mouth And Genital ulcers with Inflamed Cartilage has been used to describe similarly affected patients. We present a brief review of previously reported cases.

  20. Number names and number understanding

    DEFF Research Database (Denmark)

    Ejersbo, Lisser Rye; Misfeldt, Morten

    2014-01-01

    This paper concerns the results from the first year of a three-year research project involving the relationship between Danish number names and their corresponding digits in the canonical base 10 system. The project aims to develop a system to help the students’ understanding of the base 10 syste...