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Sample records for clifford roberts md

  1. 76 FR 48898 - Robert Leigh Kale, M.D., Decision and Order

    Science.gov (United States)

    2011-08-09

    ... Enforcement Administration Robert Leigh Kale, M.D., Decision and Order On September 9, 2010, the Deputy... Show Cause to Robert Leigh Kale, M.D. (Registrant), of Fort Smith, Arkansas. ] The Show Cause Order....100(b) and 0.104, I order that DEA Certificate of Registration, BK9514375, issued to Robert Leigh...

  2. 76 FR 71369 - Robert G. Crummie, M.D.; Decision and Order

    Science.gov (United States)

    2011-11-17

    ... intend administrative agencies to perform meaningless tasks. See Layfe Robert Anthony, M.D., 67 FR 35582... authority under the laws of the state in which he does business. See Scott Sandarg, D.M.D., 74 FR 17528 (DEA 2009); David W. Wang, M.D., 72 FR 54297 (DEA 2007); Sheran Arden Yeates, M.D., 71 FR 39130 (DEA...

  3. [Professor Frantisek Por MD and Professor Robert Klopstock MD, students at Budapest and Prague Faculties of Medicine].

    Science.gov (United States)

    Mydlík, M; Derzsiová, K

    2010-11-01

    Professor Frantisek Por MD and Professor Robert Klopstock MD were contemporaries, both born in 1899, one in Zvolen, the other in Dombovar, at the time of Austro-Hungarian Monarchy. Prof. Por attended the Faculty of Medicine in Budapest from 1918 to 1920, and Prof. Klopstock studied at the same place between 1917 and 1919. From 1920 until graduation on 6th February 1926, Prof. Por continued his studies at the German Faculty of Medicine, Charles University in Prague. Prof. Klopstock had to interrupt his studies in Budapest due to pulmonary tuberculosis; he received treatment at Tatranske Matliare where he befriended Franz Kafka. Later, upon Kafka's encouragement, he changed institutions and continued his studies at the German Faculty of Medicine, Charles University in Prague, where he graduated the first great go. It is very likely that, during their studies in Budapest and Prague, both professors met repeatedly, even though their life paths later separated. Following his graduation, Prof. Por practiced as an internist in Prague, later in Slovakia, and from 1945 in Kosice. In 1961, he was awarded the title of university professor of internal medicine at the Faculty of Medicine, Pavol Jozef Safarik University in Kosice, where he practiced until his death in 1980. Prof. Klopstock continued his studies in Kiel and Berlin. After his graduation in 1933, he practiced in Berlin as a surgeon and in 1938 left for USA. In 1962, he was awarded the title of university professor of pulmonary surgery in NewYork, where he died in 1972.

  4. In Remembrance of Robert J. Arceci, M.D., Ph.D. | Office of Cancer Genomics

    Science.gov (United States)

    It is with great sadness and a profound sense of loss that OCG recognizes the untimely passing of Dr. Robert J. Arceci. Dr. Arceci was a co-Principal Investigator for the Acute Myeloid Leukemia (AML) project within the TARGET initiative, which aims to discover novel, more effective treatments for childhood cancers. Dr. Arceci was passionate about the use of cancer genomics to both inform therapeutic approaches in the clinic and expand the field of precision medicine.

  5. Clifford Algebra with Mathematica

    CERN Document Server

    Aragon-Camarasa, G; Aragon, J L; Rodriguez-Andrade, M A

    2008-01-01

    The Clifford algebra of a n-dimensional Euclidean vector space provides a general language comprising vectors, complex numbers, quaternions, Grassman algebra, Pauli and Dirac matrices. In this work, a package for Clifford algebra calculations for the computer algebra program Mathematica is introduced through a presentation of the main ideas of Clifford algebras and illustrative examples. This package can be a useful computational tool since allows the manipulation of all these mathematical objects. It also includes the possibility of visualize elements of a Clifford algebra in the 3-dimensional space.

  6. Interview of Clifford Geertz

    OpenAIRE

    Geertz, Clifford

    2004-01-01

    Clifford Geertz interviewed by Alan Macfarlane in Cambridge, 6th May 2004, the interview lasts about two hours. Clifford Geertz talks of his childhood and education. He describes various important figures in American anthropology, and the influence of Weber. he describes his fieldwork in Indonesia and Morocco. He discusses what it is to be an anthropologist.

  7. Clifford numbers and spinors

    CERN Document Server

    Lounesto, Pertti

    1993-01-01

    This volume contains a facsimile reproduction of Marcel Riesz's notes of a set of lectures he delivered at the University of Maryland, College Park, between October 1957 and January 1958, which has not been formally published to date This seminal material (arranged in four chapters), which contributed greatly to the start of modern research on Clifford algebras, is supplemented in this book by notes which Riesz dictated to E Folke Bolinder in the following year and which were intended to be a fifth chapter of the Riesz lecture notes In addition, Riesz's work on Clifford algebra is put into an historical perspective in a separate review by P Lounesto As well as providing an introduction to Clifford algebra, this volume will be of value to those interested in the history of mathematics

  8. Clifford Geertz: A career

    Directory of Open Access Journals (Sweden)

    Bošković Aleksandar

    2007-01-01

    Full Text Available The paper presents some concepts of the recently deceased American anthropologist Clifford Geertz, putting them into the specific context of his rich and interesting career, influences that he had, as well as some reactions to his ideas. A particular attention is placed upon the concept of culture, as the key concept in the 20th century American anthropology.

  9. Real Clifford Windowed Fourier Transform

    Institute of Scientific and Technical Information of China (English)

    Mawardi BAHRI; Sriwulan ADJI; Ji Man ZHAO

    2011-01-01

    We study the windowed Fourier transform in the framework of Clifford analysis, which we call the Clifford windowed Fourier transform (CWFT). Based on the spectral representation of the Clifford Fourier transform (CFT), we derive several important properties such as shift, modulation,reconstruction formula, orthogonality relation, isometry, and reproducing kernel. We also present an example to show the differences between the classical windowed Fourier transform (WFT) and the CWFT. Finally, as an application we establish a Heisenberg type uncertainty principle for the CWFT.

  10. Clifford Geertz. In memoriam

    Directory of Open Access Journals (Sweden)

    Richard Handler

    2008-01-01

    Full Text Available En la primavera de 1991, Adam Kuper, por entonces director de Current Anthropology, y por derecho propio destacado historiador de la disciplina antropológica, me pidió realizar una entrevista a Clifford Geertz. Acepté encantado y ese mismo verano viajé a Princeton, Nueva Jersey, donde transcurrí aproximadamente tres horas con Geertz en su oficina, en el Instituto de Estudios Avanzados. Geertz me dio una cordial bienvenida y habló conmigo sin tapujos, dándome (como podrá comprobar el lector un claro y completo relato de su carrera (para una completa y exacta versión, los lectores pueden consultar ahora su autobiografía en After the Fact: Two Countries, Four Decades, one Anthropolgist, Harvard University Press, 1995. De la transcripción de la entrevista realicé un manuscrito, donde limpié las repeticiones y dubitaciones de la conversación, pero manteniendo fielmente la charla, tal y como tuvo lugar. Se lo mandé a Geertz, que propuso algunas correcciones pero que por lo demás aceptó todo.

  11. The Semigroup Structure of Left Clifford Semirings

    Institute of Scientific and Technical Information of China (English)

    Yu Qi GUO; Kar Ping SHUM; M. K. SEN

    2003-01-01

    In this paper, we generalize Clifford semirings to left Clifford semirings by means of theso-called band semirings. We also discuss a special case of this kind of semirings, that is, strongdistributive lattices of left rings.

  12. Clifford theory for group representations

    CERN Document Server

    Karpilovsky, G

    1989-01-01

    Let N be a normal subgroup of a finite group G and let F be a field. An important method for constructing irreducible FG-modules consists of the application (perhaps repeated) of three basic operations: (i) restriction to FN. (ii) extension from FN. (iii) induction from FN. This is the `Clifford Theory' developed by Clifford in 1937. In the past twenty years, the theory has enjoyed a period of vigorous development. The foundations have been strengthened and reorganized from new points of view, especially from the viewpoint of graded rings and crossed products.The purpos

  13. Rigidity theorems of Clifford Torus

    Directory of Open Access Journals (Sweden)

    SOUSA JR. LUIZ A. M.

    2001-01-01

    Full Text Available Let M be an n-dimensional closed minimally immersed hypersurface in the unit sphere Sn + 1. Assume in addition that M has constant scalar curvature or constant Gauss-Kronecker curvature. In this note we announce that if M has (n - 1 principal curvatures with the same sign everywhere, then M is isometric to a Clifford Torus .

  14. Clifford Fibrations and Possible Kinematics

    Science.gov (United States)

    McRae, Alan S.

    2009-07-01

    Following Herranz and Santander [Herranz F.J., Santander M., Mem. Real Acad. Cienc. Exact. Fis. Natur. Madrid 32 (1998), 59-84, physics/9702030] we will construct homogeneous spaces based on possible kinematical algebras and groups [Bacry H., Levy-Leblond J.-M., J. Math. Phys. 9 (1967), 1605-1614] and their contractions for 2-dimensional spacetimes. Our construction is different in that it is based on a generalized Clifford fibration: Following Penrose [Penrose R., Alfred A. Knopf, Inc., New York, 2005] we will call our fibration a Clifford fibration and not a Hopf fibration, as our fibration is a geometrical construction. The simple algebraic properties of the fibration describe the geometrical properties of the kinematical algebras and groups as well as the spacetimes that are derived from them. We develop an algebraic framework that handles all possible kinematic algebras save one, the static algebra.

  15. An introduction to Clifford algebras and spinors

    CERN Document Server

    Vaz, Jayme

    2016-01-01

    This text explores how Clifford algebras and spinors have been sparking a collaboration and bridging a gap between Physics and Mathematics. This collaboration has been the consequence of a growing awareness of the importance of algebraic and geometric properties in many physical phenomena, and of the discovery of common ground through various touch points: relating Clifford algebras and the arising geometry to so-called spinors, and to their three definitions (both from the mathematical and physical viewpoint). The main point of contact are the representations of Clifford algebras and the periodicity theorems. Clifford algebras also constitute a highly intuitive formalism, having an intimate relationship to quantum field theory. The text strives to seamlessly combine these various viewpoints and is devoted to a wider audience of both physicists and mathematicians. Among the existing approaches to Clifford algebras and spinors this book is unique in that it provides a didactical presentation of the topic and i...

  16. The Closed Subsemigroups of a Clifford Semigroup

    Institute of Scientific and Technical Information of China (English)

    Fu Yin-yin; Zhao Xian-zhong

    2014-01-01

    In this paper we study the closed subsemigroups of a Clifford semigroup. It is shown that{∪}Gα | Y′ ∈ P (Y ) is the set of all closed subsemigroups ofα∈Y′a Clifford semigroup S = [Y;Gα;ϕα,β], where Y′ denotes the subsemilattice of Y generated by Y′. In particular, G is the only closed subsemigroup of itself for a group G and each one of subsemilattices of a semilattice is closed. Also, it is shown that the semiring P (S ) is isomorphic to the semiring P (Y ) for a Clifford semigroup S=[Y;Gα;ϕα,β].

  17. Diagonal gates in the Clifford hierarchy

    Science.gov (United States)

    Cui, Shawn X.; Gottesman, Daniel; Krishna, Anirudh

    2017-01-01

    The Clifford hierarchy is a set of gates that appears in the theory of fault-tolerant quantum computation, but its precise structure remains elusive. We give a complete characterization of the diagonal gates in the Clifford hierarchy for prime-dimensional qudits. They turn out to be pmth roots of unity raised to polynomial functions of the basis state to which they are applied, and we determine which level of the Clifford hierarchy a given gate sits in based on m and the degree of the polynomial.

  18. Clifford Geertzi mälestusõhtu

    Index Scriptorium Estoniae

    2006-01-01

    10. novembril toimub TLÜ-s Ameerika kultuurantropoloogi Clifford Geertzi mälestusõhtu, kus esinevad rektor Rein Raud, TLÜ Eesti Humanitaarinstituudi antropoloogia keskuse dotsent Lorenzo Cañás Bottos ja kultuuriteooria lektor Marek Tamm

  19. Obstructions to Clifford System Extensions of Algebras

    Indian Academy of Sciences (India)

    Antonio M Cegarra; Antonio R Garzón

    2001-05-01

    In this paper we do phrase the obstruction for realization of a generalized group character, and then we give a classification of Clifford systems in terms of suitable low-dimensional cohomology groups.

  20. The Extended Fock Basis of Clifford Algebra

    CERN Document Server

    Budinich, Marco

    2010-01-01

    We investigate the properties of the Extended Fock Basis (EFB) of Clifford algebras introduced in [1]. We show that a Clifford algebra can be seen as a direct sum of multiple spinor subspaces that are characterized as being left eigenvectors of $\\Gamma$. We also show that a simple spinor, expressed in Fock basis, can have a maximum number of non zero coordinates that equals the size of the maximal totally null plane (with the notable exception of vectorial spaces with 6 dimensions).

  1. The Extended Fock Basis of Clifford Algebra

    OpenAIRE

    2010-01-01

    We investigate the properties of the Extended Fock Basis (EFB) of Clifford algebras introduced in [1]. We show that a Clifford algebra can be seen as a direct sum of multiple spinor subspaces that are characterized as being left eigenvectors of \\Gamma. We also show that a simple spinor, expressed in Fock basis, can have a maximum number of non zero coordinates that equals the size of the maximal totally null plane (with the notable exception of vectorial spaces with 6 dimensions).

  2. On Clifford representation of Hopf algebras and Fierz identities

    CERN Document Server

    Rodríguez-Romo, S

    1996-01-01

    We present a short review of the action and coaction of Hopf algebras on Clifford algebras as an introduction to physically meaningful examples. Some q-deformed Clifford algebras are studied from this context and conclusions are derived.

  3. Concepts of trace, determinant and inverse of Clifford algebra elements

    OpenAIRE

    Shirokov, Dmitry

    2011-01-01

    In our paper we consider the notion of determinant of Clifford algebra elements. We present some new formulas for determinant of Clifford algebra elements for the cases of dimension 4 and 5. Also we consider the notion of trace of Clifford algebra elements. We use the generalization of the Pauli's theorem for 2 sets of elements that satisfy the main anticommutation conditions of Clifford algebra.

  4. Transversal Clifford gates on folded surface codes

    Science.gov (United States)

    Moussa, Jonathan E.

    2016-10-01

    Surface and color codes are two forms of topological quantum error correction in two spatial dimensions with complementary properties. Surface codes have lower-depth error detection circuits and well-developed decoders to interpret and correct errors, while color codes have transversal Clifford gates and better code efficiency in the number of physical qubits needed to achieve a given code distance. A formal equivalence exists between color codes and folded surface codes, but it does not guarantee the transferability of any of these favorable properties. However, the equivalence does imply the existence of constant-depth circuit implementations of logical Clifford gates on folded surface codes. We achieve and improve this result by constructing two families of folded surface codes with transversal Clifford gates. This construction is presented generally for qudits of any dimension. The specific application of these codes to universal quantum computation based on qubit fusion is also discussed.

  5. A method of quaternion typification of Clifford algebra elements

    OpenAIRE

    Shirokov, Dmitry

    2008-01-01

    We present a new classification of Clifford algebra elements. Our classification is based on the notion of quaternion type. Using this classification we develop a method of analysis of commutators and anticommutators of Clifford algebra elements. This method allows us to find out and prove a number of new properties of Clifford algebra elements.

  6. Robert Recorde

    CERN Document Server

    Williams, Jack

    2011-01-01

    The 16th-Century intellectual Robert Recorde is chiefly remembered for introducing the equals sign into algebra, yet the greater significance and broader scope of his work is often overlooked. This book presents an authoritative and in-depth analysis of the man, his achievements and his historical importance. This scholarly yet accessible work examines the latest evidence on all aspects of Recorde's life, throwing new light on a character deserving of greater recognition. Topics and features: presents a concise chronology of Recorde's life; examines his published works; describes Recorde's pro

  7. Algebra de clifford del espacio tiempo

    OpenAIRE

    Spinel G., Ma. Carolina

    2012-01-01

    En un artículo previo, presentamos la estructura y relaciones básicas del algebra de Clifford Gn generada por el producto geométrico de los vectores de un espacio vectorial Vn sobre el cuerpo de los reales en la versión moderna de Hestenes. Este artículo se dedica a los aspectos fundamentales algebra de Clifford del espacio-tiempo plano (A.E.T.) muestra algunos hechos interesantes relacionados con teoría de Dirac, que ponen de manifiesto la importancia sencillez de la aplicación de algebras d...

  8. Geometry of Spin: Clifford Algebraic Approach

    Indian Academy of Sciences (India)

    Rukhsan-Ul-Haq

    2016-12-01

    Spin is a fundamental degree of freedom of matter and radiation.In quantum theory, spin is represented by Pauli matrices.Then the various algebraic properties of Pauli matricesare studied as properties of matrix algebra. What has beenshown in this article is that Pauli matrices are a representationof Clifford algebra of spin and hence all the propertiesof Pauli matrices follow from the underlying algebra. Cliffordalgebraic approach provides a geometrical and henceintuitive way to understand quantum theory of spin, and isa natural formalism to study spin. Clifford algebraic formalismhas lot of applications in every field where spin plays animportant role.

  9. Agama dalam Tentukur Antropologi Simbolik Clifford Geertz

    Directory of Open Access Journals (Sweden)

    Yusri Mohamad Ramli

    2012-06-01

    Full Text Available Clifford Geertz can be regarded as one of the most influential figures in religious studies, particularly in the field of anthropology. His unique symbolic anthropology approach had attracted researchers because of his emphasis on deductive reasoning in explaining the meaning of religion and in viewing cultural values that exist in religion. Research based on the content analysis of his works found that Clifford Geertz thought very strongly influenced by Ibn Khaldun as both of them emphasize on the practical reality of religious phenomena in the society. These symbols are then making a cultural system of what we call religion.

  10. Clifford Fourier transform on vector fields.

    Science.gov (United States)

    Ebling, Julia; Scheuermann, Gerik

    2005-01-01

    Image processing and computer vision have robust methods for feature extraction and the computation of derivatives of scalar fields. Furthermore, interpolation and the effects of applying a filter can be analyzed in detail and can be advantages when applying these methods to vector fields to obtain a solid theoretical basis for feature extraction. We recently introduced the Clifford convolution, which is an extension of the classical convolution on scalar fields and provides a unified notation for the convolution of scalar and vector fields. It has attractive geometric properties that allow pattern matching on vector fields. In image processing, the convolution and the Fourier transform operators are closely related by the convolution theorem and, in this paper, we extend the Fourier transform to include general elements of Clifford Algebra, called multivectors, including scalars and vectors. The resulting convolution and derivative theorems are extensions of those for convolution and the Fourier transform on scalar fields. The Clifford Fourier transform allows a frequency analysis of vector fields and the behavior of vector-valued filters. In frequency space, vectors are transformed into general multivectors of the Clifford Algebra. Many basic vector-valued patterns, such as source, sink, saddle points, and potential vortices, can be described by a few multivectors in frequency space.

  11. Thomas Clifford Allbutt and Comparative Pathology

    Science.gov (United States)

    Leung, Danny C. K.

    2008-01-01

    This paper reconceptualizes Thomas Clifford Allbutt's contributions to the making of scientific medicine in late nineteenth-century England. Existing literature on Allbutt usually describes his achievements, such as his design of the pocket thermometer and his advocacy of the use of the ophthalmoscope in general medicine, as independent events;…

  12. The Teodorescu Operator in Clifford Analysis

    Institute of Scientific and Technical Information of China (English)

    F.BRACKX; H.De SCHEPPER; M.E.LUNA-ELIZARRAR(A)S; M.SHAPIRO

    2012-01-01

    Euclidean Clifford analysis is a higher dimensional function theory centred around monogenic functions,i.e.,null solutions to a first order vector valued rotation invariant differential operator (θ) called the Dirac operator.More recently,Hermitian Clifford analysis has emerged as a new branch,offering yet a refinement of the Euclidean case; it focuses on the simultaneous null solutions,called Hermitian monogenic functions,to two Hermitian Dirac operators (θ)z_ and (θ)z_(+) which are invariant under the action of the unitary group.In Euclidean Clifford analysis,the Teodorescu operator is the right inverse of the Dirac operator (θ).In this paper,Teodorescu operators for the Hermitian Dirac operators (θ)z_ and (θ)z(+) are constructed.Moreover,the structure of the Euclidean and Hermitian Teodorescu operators is revealed by analyzing the more subtle behaviour of their components.Finally,the obtained inversion relations are still refined for the differential operators issuing from the Euclidean and Hermitian Dirac operators by splitting the Clifford algebra product into its dot and wedge parts.Their relationship with several complex variables theory is discussed.

  13. The monomial representations of the Clifford group

    CERN Document Server

    Appleby, D M; Brierley, Stephen; Gross, David; Larsson, Jan-Ake

    2011-01-01

    We show that the Clifford group - the normaliser of the Weyl-Heisenberg group - can be represented by monomial phase-permutation matrices if and only if the dimension is a square number. This simplifies expressions for SIC vectors, and has other applications to SICs and to Mutually Unbiased Bases.

  14. The Anthropologist as Essayist: Clifford Geertz.

    Science.gov (United States)

    Page, Miriam Dempsey

    Based on the premise that the most viable form of discovery for the ethnographer is the personal essay--which has been called "the expression of the self thinking" (Alfred Kazin) or writing as learning and thinking--this paper examines the work of anthropologist Clifford Geertz in the light of that definition. Particular attention is…

  15. A boundary value problem for hypermonogenic functions in Clifford analysis

    Institute of Scientific and Technical Information of China (English)

    QIAO; Yuying

    2005-01-01

    This paper deals with a boundary value problem for hypermonogenic functions in Clifford analysis. Firstly we discuss integrals of quasi-Cauchy's type and get the Plemelj formula for hypermonogenic functions in Clifford analysis, and then we address Riemman boundary value problem for hypermonogenic functions.

  16. The Extended Relativity Theory in Clifford Spaces

    Directory of Open Access Journals (Sweden)

    Castro C.

    2005-04-01

    Full Text Available An introduction to some of the most important features of the Extended Relativity theory in Clifford-spaces (C-spaces is presented whose “point” coordinates are non-commuting Clifford-valued quantities which incorporate lines, areas, volumes, hyper-volumes. . . degrees of freedom associated with the collective particle, string, membrane, p-brane. . . dynamics of p-loops (closed p-branes in target D-dimensional spacetime backgrounds. C-space Relativity naturally incorporates the ideas of an invariant length (Planck scale, maximal acceleration, non-commuting coordinates, supersymmetry, holography, higher derivative gravity with torsion and variable dimensions/signatures. It permits to study the dynamics of all (closed p-branes, for all values of p, on a unified footing. It resolves the ordering ambiguities in QFT, the problem of time in Cosmology and admits superluminal propagation (tachyons without violations of causality. A discussion of the maximal-acceleration Relativity principle in phase-spaces follows and the study of the invariance group of symmetry transformations in phase-space allows to show why Planck areas are invariant under acceleration-boosts transformations. This invariance feature suggests that a maximal-string tension principle may be operating in Nature. We continue by pointing out how the relativity of signatures of the underlying n-dimensional spacetime results from taking different n-dimensional slices through C-space. The conformal group in spacetime emerges as a natural subgroup of the Clifford group and Relativity in C-spaces involves natural scale changes in the sizes of physical objects without the introduction of forces nor Weyl’s gauge field of dilations. We finalize by constructing the generalization of Maxwell theory of Electrodynamics of point charges to a theory in C-spaces that involves extended charges coupled to antisymmetric tensor fields of arbitrary rank. In the concluding remarks we outline briefly

  17. A generalized Clifford theorem of semigroups

    Institute of Scientific and Technical Information of China (English)

    SHUM; K.P.

    2010-01-01

    A U-abundant semigroup S in which every H-class of S contains an element in the set of projections U of S is said to be a U-superabundant semigroup.This is an analogue of regular semigroups which are unions of groups and an analogue of abundant semigroups which are superabundant.In 1941,Clifford proved that a semigroup is a union of groups if and only if it is a semilattice of completely simple semigroups.Several years later,Fountain generalized this result to the class of superabundant semigroups.In this paper,we extend their work to U-superabundant semigroups.

  18. On Clifford's theorem for singular curves

    CERN Document Server

    Franciosi, Marco

    2011-01-01

    Let C be a 2-connected Gorenstein curve either reduced or contained in a smooth algebraic surface and let S be a subcanonical cluster (i.e. a 0-dim scheme such that the space H^0(C, I_S K_C) contains a generically invertible section). Under some general assumptions on S or C we show that h^0(C, I_S K_C) <= p_a(C) - deg (S)/2 and if equality holds then either S is trivial, or C is honestly hyperelliptic or 3-disconnected. As a corollary we give a generalization of Clifford's theorem for reduced curves.

  19. A remarkable representation of the Clifford group

    CERN Document Server

    Bengtsson, Ingemar

    2012-01-01

    The finite Heisenberg group knows when the dimension of Hilbert space is a square number. Remarkably, it then admits a representation such that the entire Clifford group --- the automorphism group of the Heisenberg group --- is represented by monomial phase-permutation matrices. This has a beneficial influence on the amount of calculation that must be done to find Symmetric Informationally Complete POVMs. I make some comments on the equations obeyed by the absolute values of the components of the SIC vectors, and on the fact that the representation partly suggests a preferred tensor product structure.

  20. Improved Classical Simulation of Quantum Circuits Dominated by Clifford Gates.

    Science.gov (United States)

    Bravyi, Sergey; Gosset, David

    2016-06-24

    We present a new algorithm for classical simulation of quantum circuits over the Clifford+T gate set. The runtime of the algorithm is polynomial in the number of qubits and the number of Clifford gates in the circuit but exponential in the number of T gates. The exponential scaling is sufficiently mild that the algorithm can be used in practice to simulate medium-sized quantum circuits dominated by Clifford gates. The first demonstrations of fault-tolerant quantum circuits based on 2D topological codes are likely to be dominated by Clifford gates due to a high implementation cost associated with logical T gates. Thus our algorithm may serve as a verification tool for near-term quantum computers which cannot in practice be simulated by other means. To demonstrate the power of the new method, we performed a classical simulation of a hidden shift quantum algorithm with 40 qubits, a few hundred Clifford gates, and nearly 50 T gates.

  1. Extending coherent state transforms to Clifford analysis

    Science.gov (United States)

    Kirwin, William D.; Mourão, José; Nunes, João P.; Qian, Tao

    2016-10-01

    Segal-Bargmann coherent state transforms can be viewed as unitary maps from L2 spaces of functions (or sections of an appropriate line bundle) on a manifold X to spaces of square integrable holomorphic functions (or sections) on Xℂ. It is natural to consider higher dimensional extensions of X based on Clifford algebras as they could be useful in studying quantum systems with internal, discrete, degrees of freedom corresponding to nonzero spins. Notice that the extensions of X based on the Grassmann algebra appear naturally in the study of supersymmetric quantum mechanics. In Clifford analysis, the zero mass Dirac equation provides a natural generalization of the Cauchy-Riemann conditions of complex analysis and leads to monogenic functions. For the simplest but already quite interesting case of X = ℝ, we introduce two extensions of the Segal-Bargmann coherent state transform from L2(ℝ, dx) ⊗ ℝm to Hilbert spaces of slice monogenic and axial monogenic functions and study their properties. These two transforms are related by the dual Radon transform. Representation theoretic and quantum mechanical aspects of the new representations are studied.

  2. Multifractal vector fields and stochastic Clifford algebra

    Energy Technology Data Exchange (ETDEWEB)

    Schertzer, Daniel, E-mail: Daniel.Schertzer@enpc.fr; Tchiguirinskaia, Ioulia, E-mail: Ioulia.Tchiguirinskaia@enpc.fr [University Paris-Est, Ecole des Ponts ParisTech, Hydrology Meteorology and Complexity HM& Co, Marne-la-Vallée (France)

    2015-12-15

    In the mid 1980s, the development of multifractal concepts and techniques was an important breakthrough for complex system analysis and simulation, in particular, in turbulence and hydrology. Multifractals indeed aimed to track and simulate the scaling singularities of the underlying equations instead of relying on numerical, scale truncated simulations or on simplified conceptual models. However, this development has been rather limited to deal with scalar fields, whereas most of the fields of interest are vector-valued or even manifold-valued. We show in this paper that the combination of stable Lévy processes with Clifford algebra is a good candidate to bridge up the present gap between theory and applications. We show that it indeed defines a convenient framework to generate multifractal vector fields, possibly multifractal manifold-valued fields, based on a few fundamental and complementary properties of Lévy processes and Clifford algebra. In particular, the vector structure of these algebra is much more tractable than the manifold structure of symmetry groups while the Lévy stability grants a given statistical universality.

  3. Multifractal vector fields and stochastic Clifford algebra.

    Science.gov (United States)

    Schertzer, Daniel; Tchiguirinskaia, Ioulia

    2015-12-01

    In the mid 1980s, the development of multifractal concepts and techniques was an important breakthrough for complex system analysis and simulation, in particular, in turbulence and hydrology. Multifractals indeed aimed to track and simulate the scaling singularities of the underlying equations instead of relying on numerical, scale truncated simulations or on simplified conceptual models. However, this development has been rather limited to deal with scalar fields, whereas most of the fields of interest are vector-valued or even manifold-valued. We show in this paper that the combination of stable Lévy processes with Clifford algebra is a good candidate to bridge up the present gap between theory and applications. We show that it indeed defines a convenient framework to generate multifractal vector fields, possibly multifractal manifold-valued fields, based on a few fundamental and complementary properties of Lévy processes and Clifford algebra. In particular, the vector structure of these algebra is much more tractable than the manifold structure of symmetry groups while the Lévy stability grants a given statistical universality.

  4. Injection MD

    CERN Document Server

    Bartmann, W; Bracco, C; Drosdal, L; Gianfelice, E; Goddard, B; Kain, V; Papaphilippou, Y; Vanbavinckhove, G

    2012-01-01

    This note summarizes the results obtained at injection during the 2nd MD block and the floating MD block in July. Highlights are presented for injection in the LHC with the Q20 SPS optics, influence of the supercycle and injection with 25 ns bunch spacing. Beams were successfully injected into the LHC using the Q20 optics [1, 3]. Small corrections were needed to steer the beam in the transfer lines. Dispersion measurements were conducted for both beams. The horizontal normalized dispersion in TI2 was a factor 2 smaller for Q20 with respect to Q26, for TI8 on the other hand the opposite was observed. The results for injection loss dependency on super cycle composition show only a small increase in losses for beam 2. The losses observed must therefore mainly come from other sources such as shot-by-shot stability or quality of scraping. For the injection with 25 ns bunch spacing bunches were injected for both beams. For B1 up to the maximum of 288 bunches. For B2 on the other only up to 144 bunches were injected...

  5. Clifford algebras, noncommutative tori and universal quantum computers

    CERN Document Server

    Vlasov, A Yu

    2001-01-01

    Recently author suggested [quant-ph/0010071] an application of Clifford algebras for construction of a "compiler" for universal binary quantum computer together with later development [quant-ph/0012009] of the similar idea for a non-binary base. The non-binary case is related with application of some extension of idea of Clifford algebras. It is noncommutative torus defined by polynomial algebraic relations of order l. For l=2 it coincides with definition of Clifford algebra. Here is presented the joint consideration and comparison of both cases together with some discussion on possible physical consequences.

  6. Clifford Algebras and Their Decomposition into Conjugate Fermionic Heisenberg Algebras

    Science.gov (United States)

    Catto, Sultan; Gürcan, Yasemin; Khalfan, Amish; Kurt, Levent; Kato La, V.

    2016-10-01

    We discuss a construction scheme for Clifford numbers of arbitrary dimension. The scheme is based upon performing direct products of the Pauli spin and identity matrices. Conjugate fermionic algebras can then be formed by considering linear combinations of the Clifford numbers and the Hermitian conjugates of such combinations. Fermionic algebras are important in investigating systems that follow Fermi-Dirac statistics. We will further comment on the applications of Clifford algebras to Fueter analyticity, twistors, color algebras, M-theory and Leech lattice as well as unification of ancient and modern geometries through them.

  7. The Clifford Deformation of the Hermite Semigroup

    Directory of Open Access Journals (Sweden)

    Hendrik De Bie

    2013-02-01

    Full Text Available This paper is a continuation of the paper [De Bie H., Ørsted B., Somberg P., Souček V., Trans. Amer. Math. Soc. 364 (2012, 3875–3902], investigating a natural radial deformation of the Fourier transform in the setting of Clifford analysis. At the same time, it gives extensions of many results obtained in [Ben Saïd S., Kobayashi T., Ørsted B., Compos. Math. 148 (2012, 1265–1336]. We establish the analogues of Bochner's formula and the Heisenberg uncertainty relation in the framework of the (holomorphic Hermite semigroup, and also give a detailed analytic treatment of the series expansion of the associated integral transform.

  8. Clifford Algebras in Symplectic Geometry and Quantum Mechanics

    CERN Document Server

    Binz, Ernst; Hiley, Basil J

    2011-01-01

    The necessary appearance of Clifford algebras in the quantum description of fermions has prompted us to re-examine the fundamental role played by the quaternion Clifford algebra, C(0,2). This algebra is essentially the geometric algebra describing the rotational properties of space. Hidden within this algebra are symplectic structures with Heisenberg algebras at their core. This algebra also enables us to define a Poisson algebra of all homogeneous quadratic polynomials on a two-dimensional sub-space, Fa of the Euclidean three-space. This enables us to construct a Poisson Clifford algebra, H(F), of a finite dimensional phase space which will carry the dynamics. The quantum dynamics appears as a realization of H(F) in terms of a Clifford algebra consisting of Hermitian operators.

  9. Kultuurantropoloog Clifford Geertzi mälestusõhtu

    Index Scriptorium Estoniae

    2006-01-01

    Tallinna Ülikoolis peetakse homme Ameerika kultuurantropoloogi Clifford Geertzi mälestusõhtut, esinevad rektor Rein Raud, Eesti Humanitaarinstituudi dotsent Lorenzo Cañás Bottos ja kultuuriteooria lektor Marek Tamm

  10. Cayley-Dickson and Clifford Algebras as Twisted Group Algebras

    CERN Document Server

    Bales, John W

    2011-01-01

    The effect of some properties of twisted groups on the associated algebras, particularly Cayley-Dickson and Clifford algebras. It is conjectured that the Hilbert space of square-summable sequences is a Cayley-Dickson algebra.

  11. Cliffordized NAC supersymmetry and PT-symmetric Hamiltonians

    Energy Technology Data Exchange (ETDEWEB)

    Toppan, Francesco [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)]. E-mail: toppan@cbpf.br

    2007-07-01

    It is shown that non-anti commutative supersymmetry can be described through a Cliffordization of the superspace fermionic coordinates. A NAC supersymmetric quantum mechanical model is shown to be a PT-symmetric Hamiltonian. (author)

  12. On continuity of homomorphisms between topological Clifford semigroups

    Directory of Open Access Journals (Sweden)

    I. Pastukhova

    2014-07-01

    Full Text Available Generalizing an old result of Bowman we prove that a homomorphism $f:X\\to Y$ between topological Clifford semigroups is continuous if the idempotent band $E_X=\\{x\\in X:xx=x\\}$ of $X$ is a $V$-semilattice;the topological Clifford semigroup $Y$ is ditopological;the restriction $f|E_X$ is continuous;for each subgroup $H\\subset X$ the restriction $f|H$ is continuous.

  13. Clifford Algebras in Symplectic Geometry and Quantum Mechanics

    OpenAIRE

    Binz, Ernst; de Gosson, Maurice A.; Hiley, Basil J.

    2011-01-01

    The necessary appearance of Clifford algebras in the quantum description of fermions has prompted us to re-examine the fundamental role played by the quaternion Clifford algebra, C(0,2). This algebra is essentially the geometric algebra describing the rotational properties of space. Hidden within this algebra are symplectic structures with Heisenberg algebras at their core. This algebra also enables us to define a Poisson algebra of all homogeneous quadratic polynomials on a two-dimensional s...

  14. Instantaneous Point, Line, and Plane Motions Using a Clifford Algebra

    Institute of Scientific and Technical Information of China (English)

    Kwun-Lon Ting; Yi Zhang

    2004-01-01

    The motions of points, lines, and planes, embedded in a rigid body are expressed in a unified algebraic framework using a Clifford algebra. A Clifford algebra based displacement operator is addressed and its higher derivatives from which the coordinate-independent characteristic numbers with simple geometric meaning are defined. Because of the coordinate independent feature, no tedious coordinate transformation typically found in the conventional instantaneous invariants methods is needed.

  15. The Mehler Formula for the Generalized Clifford-Hermite Polynomials

    Institute of Scientific and Technical Information of China (English)

    F.BRACKX; N.DE SCHEPPER; K.I.KOU; F.SOMMEN

    2007-01-01

    The Mehler formula for the Hermite polynomials allows for an integral representation of the one-dimensional Fractional Fourier transform.In this paper,we introduce a multi-dimensional Fractional Fourier transform in the framework of Clifford analysis.By showing that it coincides with the classical tensorial approach we are able to prove Mehler ’s formula for the generalized Clifford –Hermitepolynomials of Cli ord analysis.

  16. On the Kostant conjecture for Clifford algebra

    CERN Document Server

    Alekseev, Anton

    2011-01-01

    Let g be a complex simple Lie algebra, and h be a Cartan subalgebra. In the end of 1990s, B. Kostant defined two filtrations on h, one using the Clifford algebras and the odd analogue of the Harish-Chandra projection $hc: Cl(g) \\to Cl(h)$, and the other one using the canonical isomorphism $\\check{h} = h^*$ (here $\\check{h}$ is the Cartan subalgebra in the simple Lie algebra corresponding to the dual root system) and the adjoint action of the principal sl2-triple. Kostant conjectured that the two filtrations coincide. The two filtrations arise in very different contexts, and comparing them proved to be a difficult task. Y. Bazlov settled the conjecture for g of type A using explicit expressions for primitive invariants in the exterior algebra of g. Up to now this approach did not lead to a proof for all simple Lie algebras. Recently, A. Joseph proved that the second Kostant filtration coincides with the filtration on h induced by the generalized Harish-Chandra projection $(Ug \\otimes g)^g \\to Sh \\otimes h$ and...

  17. Spin Singularities: Clifford Kaleidoscopes and Particle Masses

    CERN Document Server

    Cohen, Marcus S

    2009-01-01

    Are particles singularities- vortex lines, tubes, or sheets in some global ocean of dark energy? We visit the zoo of Lagrangian singularities, or caustics in a spin(4,C) phase flow over compactifed Minkowsky space, and find that their varieties and energies parallel the families and masses of the elementary particles. Singularities are classified by tensor products of J Coxeter groups s generated by reflections. The multiplicity, s, is the number reflections needed to close a cycle of null zigzags: nonlinear resonances of J chiral pairs of lightlike matter spinors with (4-J) Clifford mirrors: dyads in the remaining unperturbed vacuum pairs. Using singular perturbations to "peel" phase-space singularities by orders in the vacuum intensity, we find that singular varieties with quantized mass, charge, and spin parallel the families of leptons (J=1), mesons (J=2), and hadrons (J=3). Taking the symplectic 4 form - the volume element in the 8- spinor phase space- as a natural Lagrangian, these singularities turn ou...

  18. The naked spinor a rewrite of Clifford algebra

    CERN Document Server

    Morris, Dennis

    2015-01-01

    This book is about spinors. The whole mathematical theory of spinors is within Clifford algebra, and so this book is about Clifford algebra. Spinor theory is really the theory of empty space, and so this book is about empty space. The whole of Clifford algebra is rewritten in a much simpler form, and so the whole of spinor theory is rewritten in a much simpler form. Not only does this book make Clifford algebra simple and obvious, but it lifts the fog and mirrors from this area of mathematics to make it clear and obvious. In doing so, the true nature of spinors is revealed to the reader, and, with that, the true nature of empty space. To understand this book you will need an elementary knowledge of linear algebra (matrices) an elementary knowledge of finite groups and an elementary knowledge of the complex numbers. From no more than that, you will gain a very deep understanding of Clifford algebra, spinors, and empty space. The book is well written with all the mathematical steps laid before the reader in a w...

  19. Robert Gilmore, a portrait

    Science.gov (United States)

    Solari, Hernán G.

    2013-01-01

    To present the personality of Bob Gilmore is a formidable task, as his scientific contributions include group theory, laser physics, non-linear dynamics, catastrophe theory, thermodynamics, dynamical systems, quantum theory and more. But even if we succeed in describing his contributions, much of Gilmore's being would be lost. Bob as advisor, Bob as father, Bob as teacher, Bob as scientific communicator reveal as much of Bob Gilmore as his scientific papers and his books. Very much as in the Group Theory so close to him, there is a Robert Gilmore in abstract as well as representations of Robert Gilmore. We will make an attempt to find the "principle of the rule", the abstract level of Robert Gilmore as well as Robert Gilmore, himself, as a representation of the duality science-humanism.REFID="9789814434867_0016FN001">

  20. Born-infeld electrodynamics: Clifford number and spinor representations

    Directory of Open Access Journals (Sweden)

    Alexander A. Chernitskii

    2002-01-01

    Full Text Available The Clifford number formalism for Maxwell equations is considered. The Clifford imaginary unit for space-time is introduced as coordinate independent form of fully antisymmetric fourth-rank tensor. The representation of Maxwell equations in massless Dirac equation form is considered; we also consider two approaches to the invariance of Dirac equation with respect to the Lorentz transformations. According to the first approach, the unknown column is invariant and according to the second approach it has the transformation properties known as spinorial ones. The Clifford number representation for nonlinear electrodynamics equations is obtained. From this representation, we obtain the nonlinear like Dirac equation which is the form of nonlinear electrodynamics equations. As a special case we have the appropriate representations for Born-Infeld nonlinear electrodynamics.

  1. Maximal-acceleration phase space relativity from Clifford algebras

    CERN Document Server

    Castro, C

    2002-01-01

    We present a new physical model that links the maximum speed of light with the minimal Planck scale into a maximal-acceleration Relativity principle in the spacetime tangent bundle and in phase spaces (cotangent bundle). Crucial in order to establish this link is the use of Clifford algebras in phase spaces. The maximal proper-acceleration bound is a = c^2/ \\Lambda in full agreement with the old predictions of Caianiello, the Finslerian geometry point of view of Brandt and more recent results in the literature. We present the reasons why an Extended Scale Relativity based on Clifford spaces is physically more appealing than those based on kappa-deformed Poincare algebras and the inhomogeneous quantum groups operating in quantum Minkowski spacetimes. The main reason being that the Planck scale should not be taken as a deformation parameter to construct quantum algebras but should exist already as the minimum scale in Clifford spaces.

  2. The Extended Relativity Theory in Born-Clifford Phase Spaces with a Lower and Upper Length Scales and Clifford Group Geometric Unification

    CERN Document Server

    Castro, C

    2004-01-01

    We construct the Extended Relativity Theory in Born-Clifford-Phase spaces with an upper and lower length scales (infrared/ultraviolet cutoff). The invariance symmetry leads naturally to the real Clifford algebra Cl (2, 6, R ) and complexified Clifford Cl_C ( 4 ) algebra related to Twistors. We proceed with an extensive review of Smith's 8D model based on the Clifford algebra Cl ( 1 ,7) that reproduces at low energies the physics of the Standard Model and Gravity; including the derivation of all the coupling constants, particle masses, mixing angles, ....with high precision. Further results by Smith are discussed pertaining the interplay among Clifford, Jordan, Division and Exceptional Lie algebras within the hierarchy of dimensions D = 26, 27, 28 related to bosonic string, M, F theory. Two Geometric actions are presented like the Clifford-Space extension of Maxwell's Electrodynamics, Brandt's action related the 8D spacetime tangent-bundle involving coordinates and velocities (Finsler geometries) followed by a...

  3. Clifford Hopf-gebra and Bi-universal Hopf-gebra

    CERN Document Server

    Oziewicz, Z

    1997-01-01

    We consider a pair of independent scalar products, one scalar product on vectors, and another independent scalar product on dual space of co-vectors. The Clifford co-product of multivectors is calculated from the dual Clifford algebra. With respect to this co-product unit is not group-like and vectors are not primitive. The Clifford product and the Clifford co-product fits to the bi-gebra with respect to the family of the (pre)-braids. The Clifford bi-gebra is in a braided category iff at least one of these scalar products vanish.

  4. Moyal deformations of Clifford gauge theories of gravity

    Science.gov (United States)

    Castro, Carlos

    2016-12-01

    A Moyal deformation of a Clifford Cl(3, 1) Gauge Theory of (Conformal) Gravity is performed for canonical noncommutativity (constant Θμν parameters). In the very special case when one imposes certain constraints on the fields, there are no first-order contributions in the Θμν parameters to the Moyal deformations of Clifford gauge theories of gravity. However, when one does not impose constraints on the fields, there are first-order contributions in Θμν to the Moyal deformations in variance with the previous results obtained by other authors and based on different gauge groups. Despite that the generators of U(2, 2),SO(4, 2),SO(2, 3) can be expressed in terms of the Clifford algebra generators this does not imply that these algebras are isomorphic to the Clifford algebra. Therefore one should not expect identical results to those obtained by other authors. In particular, there are Moyal deformations of the Einstein-Hilbert gravitational action with a cosmological constant to first-order in Θμν. Finally, we provide a mechanism which furnishes a plausible cancellation of the huge vacuum energy density.

  5. SPHERICAL MEANS, DISTRIBUTIONS AND CONVOLUTION OPERATORS IN CLIFFORD ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    New higher dimensional distributions are introduced in the framework of Clifford analysis.They complete the picture already established in previous work, offering unity and structuralclarity. Amongst them are the building blocks of the principal value distribution, involvingspherical harmonics, considered by Horvath and Stein.

  6. Nonlinear boundary value problem for biregular functions in Clifford analysis

    Institute of Scientific and Technical Information of China (English)

    黄沙

    1996-01-01

    The biregular function in Clifford analysis is discussed. Plemelj’s formula is obtained andnonlinear boundary value problem: is considered. Applying the methodof integral equations and Schauder fixed-point theorem, the existence of solution for the above problem is proved.

  7. Antropologie tussen wetenschap en kunst : Essays over Clifford Geertz

    NARCIS (Netherlands)

    Kuiper, Yme; Bakker, Jan Willem; Miedema, Jelle

    1987-01-01

    Clifford Geertz (*1926) is one of the most influential anthropologists of his generation. His most famous monographs and collection of essays are The Religion of Java, Agricultural Involution, Islam Observed, The Interpretation of Cultures, Local Knowledge, Negara: The Balinese Theatre State in Nine

  8. Conversation with Clifford Geertz, 4th May 2004

    OpenAIRE

    Geertz, Clifford

    2004-01-01

    Although filmed, the low light makes this work better as a sound file, lasting about one hour. Filmed by Alan Macfarlane. An informal evening conversation between members of the Department of Social Anthropology in Cambridge and Clifford Geertz about his life and work.

  9. Clifford algebra-valued orthogonal polynomials in the open unit ball of Euclidean space

    Directory of Open Access Journals (Sweden)

    Fred Brackx

    2004-01-01

    Full Text Available A new method for constructing Clifford algebra-valued orthogonal polynomials in the open unit ball of Euclidean space is presented. In earlier research, we only dealt with scalar-valued weight functions. Now the class of weight functions involved is enlarged to encompass Clifford algebra-valued functions. The method consists in transforming the orthogonality relation on the open unit ball into an orthogonality relation on the real axis by means of the so-called Clifford-Heaviside functions. Consequently, appropriate orthogonal polynomials on the real axis give rise to Clifford algebra-valued orthogonal polynomials in the unit ball. Three specific examples of such orthogonal polynomials in the unit ball are discussed, namely, the generalized Clifford-Jacobi polynomials, the generalized Clifford-Gegenbauer polynomials, and the shifted Clifford-Jacobi polynomials.

  10. Cryptanalysis of MD2

    DEFF Research Database (Denmark)

    Knudsen, Lars Ramkilde; Mathiassen, John Erik; Muller, Frédéric

    2010-01-01

    This paper considers the hash function MD2 which was developed by Ron Rivest in 1989. Despite its age, MD2 has withstood cryptanalytic attacks until recently. This paper contains the state-of-the-art cryptanalytic results on MD2, in particular collision and preimage attacks on the full hash...

  11. Initial value problems in Clifford-type analysis

    CERN Document Server

    Bolívar, Yanett M

    2011-01-01

    We consider an initial value problem of type $$ \\frac{\\partial u}{\\partial t}={\\cal F}(t,x,u,\\partial_j u), \\quad u(0,x)=\\phi(x), $$ where $t$ is the time, $x \\in \\mathbb{R}^n $ and $u_0$ is a Clifford type algebra-valued function satisfying ${\\bf D}u=\\displaystyle\\sum_{j=0}^{n}\\lambda_j(x)e_j\\partial_ju = 0$, $\\lambda_j(x)\\in \\mathbb{R} $ for all $j$. We will solve this problem using the technique of associated spaces. In order to do that, we give sufficient conditions on the coefficients of the operators ${\\cal F}$ and ${\\bf D}$, where ${\\cal F}(u)= \\displaystyle\\sum_{i=0}^{n}A^{(i)}(x)\\displaystyle\\partial_iu$ for $A^{(i)}(x) \\in \\mathbb{R}$ or $A^{(i)}(x)$ belonging to a Clifford-type algebra, such that these operators are an associated pair.

  12. Quadratic forms and Clifford algebras on derived stacks

    OpenAIRE

    Vezzosi, Gabriele

    2013-01-01

    In this paper we present an approach to quadratic structures in derived algebraic geometry. We define derived n-shifted quadratic complexes, over derived affine stacks and over general derived stacks, and give several examples of those. We define the associated notion of derived Clifford algebra, in all these contexts, and compare it with its classical version, when they both apply. Finally, we prove three main existence results for derived shifted quadratic forms over derived stacks, define ...

  13. Kaluza-Klein Theory without Extra Dimensions: Curved Clifford Space

    CERN Document Server

    Pavsic, M

    2005-01-01

    A theory in which 16-dimensional curved Clifford space (C-space) provides realization of Kaluza-Klein theory is investigated. No extra dimensions of spacetime are needed: "extra dimensions" are in C-space. It is shown that the covariant Dirac equation in C-space contains Yang-Mills fields of the U(1)xSU(2)xSU(3) group as parts of the generalized spin connection of the C-space.

  14. On the Fourier Spectra of Distributions in Clifford Analysis

    Institute of Scientific and Technical Information of China (English)

    Fred BRACKX; Bram De KNOCK; Hennie De SCHEPPER

    2006-01-01

    In recent papers by Brackx, Delanghe and Sommen, some fundamental higher dimensional distributions have been reconsidered in the framework of Clifford analysis,eventually leading to the introduction of four broad classes of new distributions in Euclidean space. In the current paper we continue the in-depth study of these distributions, more specifically the study of their behaviour in frequency space, thus extending classical results of harmonic analysis.

  15. Clifford algebras geometric modelling and chain geometries with application in kinematics

    CERN Document Server

    Klawitter, Daniel

    2015-01-01

    After revising known representations of the group of Euclidean displacements Daniel Klawitter gives a comprehensive introduction into Clifford algebras. The Clifford algebra calculus is used to construct new models that allow descriptions of the group of projective transformations and inversions with respect to hyperquadrics. Afterwards, chain geometries over Clifford algebras and their subchain geometries are examined. The author applies this theory and the developed methods to the homogeneous Clifford algebra model corresponding to Euclidean geometry. Moreover, kinematic mappings for special Cayley-Klein geometries are developed. These mappings allow a description of existing kinematic mappings in a unifying framework.  Contents Models and representations of classical groups Clifford algebras, chain geometries over Clifford algebras Kinematic mappings for Pin and Spin groups Cayley-Klein geometries Target Groups Researchers and students in the field of mathematics, physics, and mechanical engineering About...

  16. $Z_3$-graded analogues of Clifford algebras and generalization of supersymmetry

    CERN Document Server

    Abramov, V V

    1996-01-01

    We define and study the ternary analogues of Clifford algebras. It is proved that the ternary Clifford algebra with $N$ generators is isomorphic to the subalgebra of the elements of grade zero of the ternary Clifford algebra with $N+1$ generators. In the case $N=3$ the ternary commutator of cubic matrices induced by the ternary commutator of the elements of grade zero is derived. We apply the ternary Clifford algebra with one generator to construct the $Z_3$-graded generalization of the simplest algebra of supersymmetries.

  17. Dawbeney Turbervile, MD (1612-1696).

    Science.gov (United States)

    Simunovic, Matthew P

    2012-03-01

    The year 2012 marks the quatercentenary of the birth of Dawbeney Turbervile,MD(1612-1696), one-time Royalist soldier and later ophthalmologist to England’s Princess Anne, the diarist Samuel Pepys, the natural philosopher Robert Boyle, and the astronomer Walter Pope. Turbervile is remarkable for many reasons: He specialized at a time when generalization was prized; though he was a qualified physician, he also practiced the trade of surgery. Furthermore, he provided in his communications with the Royal Society early descriptions of achromatopsia, ocular foreign body removal with a magnet, and tic doloreaux. He is a forebear worth remembering

  18. Robert Grosseteste's colours

    CERN Document Server

    Sparavigna, Amelia Carolina

    2013-01-01

    Here I am proposing a translation and discussion of the De Colore, one of the short scientific treatises written by Robert Grosseteste. In this very short treatise of the mid-1220s, Grosseteste continued the discussion on light and colours he started in the De Iride. He describes two manners of counting colours: one gives an infinity of tones, the other counts seven colours. In both cases, colours are created by the purity or impurity of the transparent medium when light is passing through it. This medieval framework survived until Newton's experiments with prisms.

  19. Remembering Robert Seydel

    Directory of Open Access Journals (Sweden)

    Lauren van Haaften­-Schick

    2011-06-01

    Full Text Available This January, while preparing a new course, Robert Seydel was struck and killed by an unexpected heart attack. He was a critically under-appreciated artist and one of the most beloved and admired professors at Hampshire College.At the time of his passing, Seydel was on the brink of a major artistic and career milestone. His Book of Ruth was being prepared for publication by Siglio Press. His publisher describes the book as: “an alchemical assemblage that composes the life of his alter ego, Ruth Greisman— spinster, Sunday painter, and friend to Joseph Cornell and Marcel Duchamp. Through collages, drawings, and journal entries from Ruth’s imagined life, Seydel invokes her interior world in novelistic rhythms.”This convergence of his professional triumph with the tragedy of his death makes now a particularly appropriate time to think about Robert Seydel and his work. This feature contains a selection of excerpts from Book of Ruth (courtesy of Siglio Press alongside a pair of texts remembering him and giving critical and biographical insights into his art and his person. These texts, from a former student and a colleague respectively, were originally prepared for Seydel's memorial at Hampshire College and have since been revised for publication in continent.

  20. The Hidden Quantum Group of the 8-vertex Free Fermion Model q-Clifford Algebras

    CERN Document Server

    Cuerno, R; López, E; Sierra, G

    1993-01-01

    We prove in this paper that the elliptic $R$--matrix of the eight vertex free fermion model is the intertwiner $R$--matrix of a quantum deformed Clifford--Hopf algebra. This algebra is constructed by affinization of a quantum Hopf deformation of the Clifford algebra.

  1. Representations of Clifford algebras of ternary quartic forms

    CERN Document Server

    Coskun, Emer; Mustopa, Yusuf

    2011-01-01

    Given a nondegenerate ternary form $f=f(x_1,x_2,x_3)$ of degree 4 over an algebraically closed field of characteristic zero, we use the geometry of K3 surfaces to construct a certain positive-dimensional family of irreducible representations of the generalized Clifford algebra associated to $f.$ From this we obtain the existence of linear Pfaffian representations of the quartic surface $X_f=\\{w^4=f(x_1,x_2,x_3)\\},$ as well as information on the Brill-Noether theory of a general smooth curve in the linear system $|\\mathcal{O}_{X_f}(3)|.$

  2. Coverage analysis for sensor networks based on Clifford algebra

    Institute of Scientific and Technical Information of China (English)

    XIE WeiXin; CAO WenMing; MENG Shan

    2008-01-01

    The coverage performance is the foundation of information acquisition in distrib-uted sensor networks. The previously proposed coverage work was mostly based on unit disk coverage model or ball coverage model in 2D or 3D space, respectively. However, most methods cannot give a homogeneous coverage model for targets with hybrid types. This paper presents a coverage analysis approach for sensor networks based on Clifford algebra and establishes a homogeneous coverage model for sensor networks with hybrid types of targets. The effectiveness of the approach is demonstrated with examples.

  3. MD SIMULATION FOR NANOCRYSTALS

    Institute of Scientific and Technical Information of China (English)

    马新玲; 杨卫

    2003-01-01

    Molecular dynamic (MD) provided an ab initio simulation for nano-scale mechanical behavior of materials, provided that the inter-atomic potential is accurately prescribed. MD is particularly suitable in simulating the formation, the deformation, and the evolution of nanocrystals under a fast strain rate. To tackle large scale system and nano-seconds time duration, parallel algorithm is desired. The present paper reviews the recent advances in MD simulation for nanocrystals with attention focused on the applications toward nanomechanics. The examined issues are: formation of nanocrystalline metals, nanoindentation on nanocrystals, fast deformation of nanocrystals, orderdisorder transition, and nano-particle impact.

  4. Robert Wilson og muscial formatet

    DEFF Research Database (Denmark)

    Eigtved, Michael

    2002-01-01

    Artiklen undersøger hvordan Robert Wilson og Tom Waits' forestilling The Black Rider (1995) forholder sig til musicalkonventionerne......Artiklen undersøger hvordan Robert Wilson og Tom Waits' forestilling The Black Rider (1995) forholder sig til musicalkonventionerne...

  5. Robert Cailliau honoured by Belgium

    CERN Multimedia

    2004-01-01

    On 15 November, Robert Cailliau received the distinction of Commandeur de l'Ordre de Léopold from Belgium, his home country, for his pioneering work in developing the World Wide Web. Robert Cailliau worked closely with Tim Berners-Lee, the inventor of the Web.

  6. Muscular Dystrophy (MD)

    Science.gov (United States)

    ... fight respiratory infections. Some individuals may benefit from occupational therapy and assistive technology. Some ... (MD) are a group of more than 30 genetic diseases characterized by progressive weakness and degeneration of the ...

  7. Bilinear covariants and spinor fields duality in quantum Clifford algebras

    Energy Technology Data Exchange (ETDEWEB)

    Abłamowicz, Rafał, E-mail: rablamowicz@tntech.edu [Department of Mathematics, Box 5054, Tennessee Technological University, Cookeville, Tennessee 38505 (United States); Gonçalves, Icaro, E-mail: icaro.goncalves@ufabc.edu.br [Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão, 1010, 05508-090, São Paulo, SP (Brazil); Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, 09210-170 Santo André, SP (Brazil); Rocha, Roldão da, E-mail: roldao.rocha@ufabc.edu.br [Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, 09210-170 Santo André, SP (Brazil); International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste (Italy)

    2014-10-15

    Classification of quantum spinor fields according to quantum bilinear covariants is introduced in a context of quantum Clifford algebras on Minkowski spacetime. Once the bilinear covariants are expressed in terms of algebraic spinor fields, the duality between spinor and quantum spinor fields can be discussed. Thus, by endowing the underlying spacetime with an arbitrary bilinear form with an antisymmetric part in addition to a symmetric spacetime metric, quantum algebraic spinor fields and deformed bilinear covariants can be constructed. They are thus compared to the classical (non quantum) ones. Classes of quantum spinor fields classes are introduced and compared with Lounesto's spinor field classification. A physical interpretation of the deformed parts and the underlying Z-grading is proposed. The existence of an arbitrary bilinear form endowing the spacetime already has been explored in the literature in the context of quantum gravity [S. W. Hawking, “The unpredictability of quantum gravity,” Commun. Math. Phys. 87, 395 (1982)]. Here, it is shown further to play a prominent role in the structure of Dirac, Weyl, and Majorana spinor fields, besides the most general flagpoles and flag-dipoles. We introduce a new duality between the standard and the quantum spinor fields, by showing that when Clifford algebras over vector spaces endowed with an arbitrary bilinear form are taken into account, a mixture among the classes does occur. Consequently, novel features regarding the spinor fields can be derived.

  8. MD-2 binds cholesterol.

    Science.gov (United States)

    Choi, Soo-Ho; Kim, Jungsu; Gonen, Ayelet; Viriyakosol, Suganya; Miller, Yury I

    2016-02-19

    Cholesterol is a structural component of cellular membranes, which is transported from liver to peripheral cells in the form of cholesterol esters (CE), residing in the hydrophobic core of low-density lipoprotein. Oxidized CE (OxCE) is often found in plasma and in atherosclerotic lesions of subjects with cardiovascular disease. Our earlier studies have demonstrated that OxCE activates inflammatory responses in macrophages via toll-like receptor-4 (TLR4). Here we demonstrate that cholesterol binds to myeloid differentiation-2 (MD-2), a TLR4 ancillary molecule, which is a binding receptor for bacterial lipopolysaccharide (LPS) and is indispensable for LPS-induced TLR4 dimerization and signaling. Cholesterol binding to MD-2 was competed by LPS and by OxCE-modified BSA. Furthermore, soluble MD-2 in human plasma and MD-2 in mouse atherosclerotic lesions carried cholesterol, the finding supporting the biological significance of MD-2 cholesterol binding. These results help understand the molecular basis of TLR4 activation by OxCE and mechanisms of chronic inflammation in atherosclerosis.

  9. Dirac-Kaehler Fermion from Clifford Product with Noncommutative Differential Form on a Lattice

    CERN Document Server

    Kanamori, I; Kanamori, Issaku; Kawamoto, Noboru

    2004-01-01

    We formulate Dirac-Kaehler fermion action by introducing a new Clifford product with noncommutative differential form on a lattice. Hermiticity of the Dirac-Kaehler action requires to choose the lattice structure having both orientabilities on a link. The Kogut-Susskind fermion and the staggered fermion actions are derived directly from the Dirac-Kaehler fermion formulated by the Clifford product. The lattice QCD action with Dirac-Kaehler matter fermion is also derived via an inner product defined by the Clifford product.

  10. Robert Smithsoni ülevaade

    Index Scriptorium Estoniae

    1999-01-01

    Ameerika maakunstniku Robert Smithsoni (1938-1973) retrospektiivnäitus 12. sept.-ni Stockholmi Moodsa Kunsti Muuseumis. Kunstnikule maailmakuulsuse toonud tööst, 1970. a. Utah' osariigi Suurde Soolajärve ehitatud spiraalmuulist "Spiral Jetty".

  11. Robert Lepiksoni maailm / Eha Komissarov

    Index Scriptorium Estoniae

    Komissarov, Eha, 1947-

    2000-01-01

    Näitus "Minu maailm. Robert Lepikson fotograafina ja kollektsionäärina" galeriis "Vaal". Väljas on loodusfotod, fotod autodest, kunstikogust Eduard Steinbergi (1937) ja Vladimir Nemuhhini (1925) maalid, paar Salvador Dali värvilist litograafiat

  12. Clifford Algebras, Pure Spinors and the Physics of Fermions

    CERN Document Server

    Budinich, P

    2002-01-01

    The equations defining pure spinors are interpreted as equations of motion formulated on the lightcone of a ten-dimensional, lorentzian, momentum space. Most of the equations for fermion multiplets, usually adopted by particle physics, are then naturally obtained and their properties like internal symmetries, charges, families appear to be due to the correlation of the associated Clifford algebras, with the 3 complex division algebras: complex numbers at the origin of U(1) and charges; quaternions at the origin of SU(2); families and octonions at the origin of SU(3). Pure spinors instead could be relevant not only because the underlying momentum space results compact, but also because it may throw light on some aspects of particle physics, like: masses, charges, constraint relations, supersymmetry and epistemology.

  13. The Clifford algebra of physical space and Dirac theory

    Science.gov (United States)

    Vaz, Jayme, Jr.

    2016-09-01

    The claim found in many textbooks that the Dirac equation cannot be written solely in terms of Pauli matrices is shown to not be completely true. It is only true as long as the term β \\psi in the usual Dirac factorization of the Klein-Gordon equation is assumed to be the product of a square matrix β and a column matrix ψ. In this paper we show that there is another possibility besides this matrix product, in fact a possibility involving a matrix operation, and show that it leads to another possible expression for the Dirac equation. We show that, behind this other possible factorization is the formalism of the Clifford algebra of physical space. We exploit this fact, and discuss several different aspects of Dirac theory using this formalism. In particular, we show that there are four different possible sets of definitions for the parity, time reversal, and charge conjugation operations for the Dirac equation.

  14. The. gamma. sub 5 -problem and anomalies - a Clifford algebra approach

    Energy Technology Data Exchange (ETDEWEB)

    Kreimer, D. (Mainz Univ. (Germany, F.R.). Inst. fuer Physik)

    1990-03-08

    It is shown that a strong correspondence between noncyclicity and anomalies exists. This allows, by fundamental properties of Clifford algebras, to build a simple and consistent scheme for treating {gamma}{sub 5} without using (d-4)-dimensional objects. (orig.).

  15. ON CAUCHY-POMPEIU FORMULA FOR FUNCTIONS WITH VALUES IN A UNIVERSAL CLIFFORD ALGEBRA

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    This paper obtains the Cauchy-Pompeiu formula on certain distinguishedboundary for functions with values in a universal Clifford algebra. This formula is just anextension of the Cauchy's integral formula obtained in [11].

  16. The many faces of Maxwell, Dirac and Einstein equations a Clifford bundle approach

    CERN Document Server

    Rodrigues, Jr, Waldyr A

    2016-01-01

    This book is an exposition of the algebra and calculus of differential forms, of the Clifford and Spin-Clifford bundle formalisms, and of vistas to a formulation of important concepts of differential geometry indispensable for an in-depth understanding of space-time physics. The formalism discloses the hidden geometrical nature of spinor fields. Maxwell, Dirac and Einstein fields are shown to have representatives by objects of the same mathematical nature, namely sections of an appropriate Clifford bundle. This approach reveals unity in diversity and suggests relationships that are hidden in the standard formalisms and opens new paths for research. This thoroughly revised second edition also adds three new chapters: on the Clifford bundle approach to the Riemannian or semi-Riemannian differential geometry of branes; on Komar currents in the context of the General Relativity theory; and an analysis of the similarities and main differences between Dirac, Majorana and ELKO spinor fields. The exercises with solut...

  17. GAUSS-MEAN VALUE FORMULA FOR TRIHARMONIC FUNCTIONS AND ITS APPLICATIONS IN CLIFFORD ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    Longfei GU; Zhongxiang ZHANG

    2013-01-01

    In this paper, the integral representation for some polyharmonic functions with values in a universal Clifford algebra Cl(Vn,n) is studied and Gauss-mean value formula for triharmonic functions with values in a Clifford algebra Cl(Vn,n) are proved by using Stokes formula and higher order Cauchy-Pompeiu formula. As application some results about growth condition at infinity are obtained.

  18. Twist `til we tear the house down: How Clifford solved the universe in 1870

    Science.gov (United States)

    Beichler, James

    2010-02-01

    It is commonly believed that the first hyperspace theories in physics were developed in the early twentieth century - Kaluza's five-dimensional extension of relativity is the best known, but this is untrue. It is also commonly believed that W.K. Clifford `speculated' on a higher space in 1870, had no followers and never published his theory (if he even had one). Nothing could be further from the historical truth. As early as 1869, Clifford, his followers and students began to develop a physical theory of matter based on a three-dimensional space curved in four dimensions. Clifford began to publish his theory, but modern researchers have failed to recognize his theoretical work because they look for something like Einstein's theory even though Clifford developed an electromagnetic theory. Clifford may not have directly influenced Einstein's relativity, but he made plausible arguments for the reality of space curvature, rendering the rapid acceptance of Einstein's concept of curved space-time more plausible. Clifford's work is either largely ignored by historians, scientists and other scholars or considered irrelevant because the early work on hyperspaces has been associated with ether theories that were abandoned, utilized quaternion algebras that were replaced by vectors and tensors, and was unfortunately associated with spiritualism. )

  19. Clifford Algebra Cℓ 3(ℂ) for Applications to Field Theories

    Science.gov (United States)

    Panicaud, B.

    2011-10-01

    The multivectorial algebras present yet both an academic and a technological interest. Difficulties can occur for their use. Indeed, in all applications care is taken to distinguish between polar and axial vectors and between scalars and pseudo scalars. Then a total of eight elements are often considered even if they are not given the correct name of multivectors. Eventually because of their simplicity, only the vectorial algebra or the quaternions algebra are explicitly used for physical applications. Nevertheless, it should be more convenient to use directly more complex algebras in order to have a wider range of application. The aim of this paper is to inquire into one particular Clifford algebra which could solve this problem. The present study is both didactic concerning its construction and pragmatic because of the introduced applications. The construction method is not an original one. But this latter allows to build up the associated real algebra as well as a peculiar formalism that enables a formal analogy with the classical vectorial algebra. Finally several fields of the theoretical physics will be described thanks to this algebra, as well as a more applied case in general relativity emphasizing simultaneously its relative validity in this particular domain and the easiness of modeling some physical problems.

  20. The Way Robert Sees It

    Science.gov (United States)

    Freado, Mark D.; Wille, A. Katherine

    2007-01-01

    Robert, a fifteen-year-old resident in a residential treatment program, was diagnosed with significant hearing impairment. He communicates primarily through American Sign Language, although he speaks relatively well and has some hearing ability. Katie, a youth worker who has participated in Life Space Crisis Intervention (LSCI) training, worked…

  1. Steven Hawking with Robert Aymar

    CERN Multimedia

    Maximilien Brice

    2006-01-01

    Steven Hawking is seen meeting with CERN's Director-General, Robert Aymar. Hawking visited CERN between 24 September and 1 October 2006. During his stay he gave two lectures and toured the LHC, which may provide insights into Hawking's most famous area of study, black holes.

  2. Max Weber and Robert Michels.

    Science.gov (United States)

    Scaff, Lawrence A.

    1981-01-01

    This paper investigates the unique intellectual partnership of Max Weber and Robert Michels, with particular emphasis on Weber's influence on Michel's inquiry into the sociology of parties and organization. Concludes with an evaluation of the import of Weber's critique of Michels' work. (DB)

  3. Robert Merton Dies at 92

    Science.gov (United States)

    Snell, Joel C.

    2006-01-01

    This article features Robert Merton, who died recently at age 92. Merton came into this world as a Jewish baby named Meyer Schkolnick. He lived in South Philly where his parents wrenched a living as blue-collar workers. Merton chose an Anglicized name to move into the Yankee dominated America of the 20's and 30's. At Harvard, he studied under…

  4. Robert Paine Doctor Honoris Causa

    Directory of Open Access Journals (Sweden)

    Per Mathiesen

    1998-02-01

    Full Text Available Professor Emeritus Dr. Robert Paine was conferred the degree of Doctor Honoris Causa at the University of Tromsø on August 27 1998 as a recognition of his long lasting and continuing influence on the anthropological study of modern society, and in particular his many contributions to the understanding of Sami reindeer husbandry and the Sami culture in general.

  5. Robert A. Mundell: Background Information

    OpenAIRE

    Committee, Nobel Prize

    1999-01-01

    The Royal Swedish Academy of Sciences has decided to award the Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel, 1999 to Professor Robert A. Mundell, Columbia University, New York, USA for his analysis of monetary and fiscal policy under different exchange rate regimes and his analysis of optimum currency areas.

  6. Robert Glaser (1921-2012).

    Science.gov (United States)

    Rangel, Elizabeth S

    2012-12-01

    Robert Glaser, an internationally recognized scholar in the psychology of learning and instruction, passed away on February 4, 2012. Bob was born on January 18, 1921, in Providence, Rhode Island. Glaser was the founding director of the Learning Research and Development Center (LRDC) and Distinguished Professor of Psychology and Education at the University of Pittsburgh.

  7. On n-ary algebras, branes and poly-vector gauge theories in noncommutative Clifford spaces

    Science.gov (United States)

    Castro, Carlos

    2010-09-01

    In this paper, poly-vector-valued gauge field theories in noncommutative Clifford spaces are presented. They are based on noncommutative (but associative) star products that require the use of the Baker-Campbell-Hausdorff formula. Using these star products allows the construction of actions for noncommutative p-branes (branes moving in noncommutative spaces). Noncommutative Clifford-space gravity as a poly-vector-valued gauge theory of twisted diffeomorphisms in Clifford spaces would require quantum Hopf algebraic deformations of Clifford algebras. We proceed with the study of n-ary algebras and find an important relationship among the n-ary commutators of the noncommuting spacetime coordinates [X1, X2, ..., Xn] with the poly-vector-valued coordinates X123sdotsdotsdotn in noncommutative Clifford spaces given by [X1, X2, ..., Xn] = n!X123sdotsdotsdotn. The large N limit of n-ary commutators of n hyper-matrices {\\bf X}_{i_1 i_2 \\cdots i_n} leads to Eguchi-Schild p-brane actions for p + 1 = n. A noncomutative n-ary • product of n functions is constructed which is a generalization of the binary star product * of two functions and is associated with the deformation quantization of n-ary structures and deformations of the Nambu-Poisson brackets.

  8. Physical Applications of a Generalized Clifford Calculus (Papapetrou equations and Metamorphic Curvature)

    CERN Document Server

    Pezzaglia, W M

    1997-01-01

    A generalized Clifford manifold is proposed in which there are coordinates not only for the basis vector generators, but for each element of the Clifford group, including the identity scalar. These new quantities are physically interpreted to represent internal structure of matter (e.g. classical or quantum spin). The generalized Dirac operator must now include differentiation with respect to these higher order geometric coordinates. In a Riemann space, where the magnitude and rank of geometric objects are preserved under displacement, these new terms modify the geodesics. One possible physical interpretation is natural coupling of the classical spin to linear motion, providing a new derivation of the Papapetrou equations. A generalized curvature is proposed for the Clifford manifold in which the connection does not preserve the rank of a multivector under parallel transport, e.g. a vector may be ``rotated'' into a scalar.

  9. On supergroups with odd Clifford parameters and non-anticommutative supersymmetry

    Energy Technology Data Exchange (ETDEWEB)

    Kuznetsova, Z. [Universidade Federal de Juiz de Fora (UFJF), MG (Brazil). Inst. de Ciencias Exatas]. E-mail: zhanna@cbpf.br; Rojas, M.; Toppan, F. [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)]. E-mails: mrojas@cbpf.br; toppan@cbpf.br

    2007-07-01

    We investigate super groups with Grassmann parameters replaced by odd Clifford parameters. The connection with non-anti commutative supersymmetry is discussed. A Berezin-like calculus for odd Clifford variables is introduced. Fermionic covariant derivatives for super groups with odd Clifford variables are derived. Applications to supersymmetric quantum mechanics are made. Deformations of the original supersymmetric theories are encountered when the fermionic covariant derivatives do not obey the graded Leibniz property. The simplest non-trivial example is given by the N = 2 SQM with a real (1, 2, 1) multiplet and a cubic potential. The action is real. Depending on the overall sign ('Euclidean' or 'Lorentzian') of the deformation, a Bender-Boettcher pseudo-hermitian Hamiltonian is encountered when solving the equation of motion of the auxiliary field. A possible connection of our framework with the Drinfeld twist deformation of supersymmetry is pointed out. (author)

  10. J. Robert Oppenheimer - A Life

    Science.gov (United States)

    Pais, Abraham; Crease, Robert P.

    2007-05-01

    The late Abraham Pais, author of the award winning biography of Albert Einstein, Subtle is the Lord , here offers an illuminating portrait of another of his eminent colleagues, J. Robert Oppenheimer, one of the most charismatic and enigmatic figures of modern physics. Pais introduces us to a precocious youth who sped through Harvard in three years, made signal contributions to quantum mechanics while in his twenties, and was instrumental in the growth of American physics in the decade before the Second World War, almost single-handedly bringing it to a state of prominence. He paints a revealing portrait of Oppenheimer's life in Los Alamos, where in twenty remarkable, feverish months, and under his inspired guidance, the first atomic bomb was designed and built, a success that made Oppenheimer America's most famous scientist. Pais describes Oppenheimer's long tenure as Director of the Institute of Advanced Study at Princeton, where the two men worked together closely. He shows not only Oppenheimer's brilliance and leadership, but also how his displays of intensity and arrogance won him powerful enemies, ones who would ultimately make him one of the principal victims of the Red Scare of the 1950s. J. Robert Oppenheimer is Abraham Pais's final work, completed after his death by Robert P. Crease, an acclaimed historian of science in his own right. Told with compassion and deep insight, it is the most comprehensive biography of the great physicist available. Anyone seeking an insider's portrait of this enigmatic man will find it indispensable.

  11. Arnold Aberman, MD.

    Science.gov (United States)

    Aberman, A

    1995-10-01

    When the United States embarked on its effort to provide universal health insurance, the Canadian Medicare System was cited as a possible model for American health care. Often touted as an example of low-cost, high quality medicine, the Canadian system has mirrored the problems of health care across its southern border. With rocketing health care expenditures and financing having largely been decentralized to the individual provinces, local officials have struggled to cut costs and services. A central focus of these efforts has been a move to decrease the numbers of physicians, most notably a 10% decrease in medical school class size in 1993. While some Western provinces have experimented with the privatization of health care, the Canadian system still remains the epitome of government operated fee-for-service medicine. Given the likelihood of dramatic change in the American Medicare system, Canadian academic centers offer a unique perspective on the impact of capitation, evolving relationships with government payors, and the flip side of market oriented reforms. At the helm of one of Canada's largest schools is Arnold Aberman, MD, dean of the University of Toronto Faculty of Medicine. Born in Montreal, Quebec, Aberman received his MD from McGill University, but then did his residency both in Canada and the US, followed by a pulmonary fellowship at Albert Einstein College of Medicine and the Cardiovascular Research Institute of the University of California, San Francisco. Interviewed at his office in Toronto, Aberman reflected on the trials and tribulations confronting medicine on both sides of the 48th parallel.

  12. Fundaments of Quaternionic Clifford Analysis III: Fischer Decomposition in Symplectic Harmonic Analysis

    OpenAIRE

    Brackx, Fred; De Schepper, Hennie; Eelbode, David; Lavicka, Roman; Soucek, Vladimir

    2014-01-01

    In the framework of quaternionic Clifford analysis in Euclidean space $\\mathbb{R}^{4p}$, which constitutes a refinement of Euclidean and Hermitian Clifford analysis, the Fischer decomposition of the space of complex valued polynomials is obtained in terms of spaces of so--called (adjoint) symplectic spherical harmonics, which are irreducible modules for the symplectic group Sp$(p)$. Its Howe dual partner is determined to be $\\mathfrak{sl}(2,\\mathbb{C}) \\oplus \\mathfrak{sl}(2,\\mathbb{C}) = \\ma...

  13. THE DEMOKTESIS OF ROBERT NOZICK A DEMOKTESIS DE ROBERT NOZICK

    Directory of Open Access Journals (Sweden)

    Luiz Felipe Netto de Andrade e Silva Sahd

    2008-04-01

    Full Text Available the present article aims at reconstructing Robert Nozick’s cen-tral arguments about the extreme positions held by North American li-bertarians who do not distinguish between Welfare state and totalitarian state. Despite divergences on a pivotal question, that of the state, there are some affinities between Nozick and this current of thought. Contrary to the anarchist theory, the Minimal state is preferable to the state of nature as described by John locke.O presente artigo tem como objetivo reconstruir argumentos cen-trais, desenvolvidos por Robert Nozick, acerca das posições extremas que não diferenciam Estado-providência e Estado totalitário na política dos libertarianos norte-americanos, isto é, sobre as afinidades percebidas por Nozick com as teses desta corrente de pensamento, embora se afastando num ponto essencial: a questão do Estado. Ao contrário da teoria anar-quista, o Estado mínimo é preferível ao estado de natureza, tal como John locke o descreve.

  14. ADT fast losses MD

    CERN Document Server

    Priebe, A; Dehning, B; Redaelli, S; Salvachua Ferrando, BM; Sapinski, M; Solfaroli Camillocci, M; Valuch, D

    2013-01-01

    The fast beam losses in the order of 1 ms are expected to be a potential major luminosity limitation for higher beam energies after the LHC long shutdown (LS1). Therefore a Quench Test is planned in the winter 2013 to estimate the quench limit in this timescale and revise the current models. This experiment was devoted to determination the LHC Transverse Damper (ADT) as a system for fast losses induction. A non-standard operation of the ADT was used to develop the beam oscillation instead of suppressing them. The sign flip method had allowed us to create the fast losses within several LHC turns at 450 GeV during the previous test (26th March 2012). Thus, the ADT could be potentially used for the studies of the UFO ("Unidentied Falling Object") impact on the cold magnets. Verification of the system capability and investigations of the disturbed beam properties were the main objectives of this MD. During the experiment, the pilot bunches of proton beam were excited independently in the horizontal and vertical ...

  15. Advancing Scholarship and Intellectual Productivity: An Interview with Clifford A. Lynch

    Science.gov (United States)

    Hawkins, Brian L.

    2006-01-01

    In this second part of a two-part interview with Clifford A. Lynch, Executive Director of the Coalition for Networked Information, Lynch talks to Hawkins about the most provocative and exciting projects that are being developed in the field of networked information worldwide. He also talks on how institutional repositories are being currently…

  16. Beyond War Stories: Clifford G. Christians' Influence on the Teaching of Media Ethics, 1976-1984.

    Science.gov (United States)

    Peck, Lee Anne

    Clifford Glenn Christians' work in the area of media ethics education from 1976 through 1984 has influenced the way media ethics is taught to many college students today. This time period includes, among his other accomplishments, Christians' work on an extensive survey of how media ethics was taught in the late 1970s, his work on the Hastings…

  17. Extension Theorem for Complex Clifford Algebras-Valued Functions on Fractal Domains

    Directory of Open Access Journals (Sweden)

    Bory-Reyes Juan

    2010-01-01

    Full Text Available Monogenic extension theorem of complex Clifford algebras-valued functions over a bounded domain with fractal boundary is obtained. The paper is dealing with the class of Hölder continuous functions. Applications to holomorphic functions theory of several complex variables as well as to that of the so-called biregular functions will be deduced directly from the isotonic approach.

  18. The Social Scientist as Author: Clifford Geertz on Ethnography and Social Construction.

    Science.gov (United States)

    Olson, Gary A.

    1991-01-01

    Outlines and comments on the views of Clifford Geertz with regard to ethnography and social construction. Provides a transcript of an interview with Geertz, in which Geertz comments on his technical anthropological writings. Discusses his recent book "Works and Lives," his writing process, persuasive writing, and literary criticism,…

  19. The Concept of Person in American Anthroplogy : The Cultural Perspective of Clifford Geertz

    NARCIS (Netherlands)

    Kuiper, Yme; Kippenberg, Hans G.; Kuiper, Yme B.; Sanders, Andy F.

    1990-01-01

    The 'meanings-and-symbols' anthropologist Clifford Geertz wrote one of the most influential articles in anthropology: 'Religion as a Cultural System'. Some years later he published his collection of essays 'The Interpretation of Culture', that had a great impact on the humanities in the late 20th ce

  20. Clifford Geertz and Beyond: The Interpretive Interview/Essay and Reflexive Ethnography.

    Science.gov (United States)

    Page, Miriam Dempsey

    In "The Uses of Diversity," the interpretive anthropologist, Clifford Geertz, says that it is impossible to completely get inside the point of view of another culture. Geertz contends, however, that despite multiple voices in the growing body of reflexive ethnographies there is still an author composing the work. Besides Geertz,…

  1. MD5算法研究%MD5 Algorithm

    Institute of Scientific and Technical Information of China (English)

    张裔智; 赵毅; 汤小斌

    2008-01-01

    随着网络技术的迅速发展,信息加密技术已成为保障网络安全的一种重要手段,加密算法已经成为人们的一个研究热点.本文对MD5算法进行了深入研究,介绍MD5算法的产生背景、应用及其算法流程,并提出了MD5算法的一个改进方案.

  2. Leroy D Vandam, MD: an anesthesia journey.

    Science.gov (United States)

    Ortega, Rafael A

    2005-08-01

    Leroy D Vandam, MD was a remarkable man--an intricate amalgamation of an artist, scientist, and physician. He was a bastion of medical historical knowledge. Dr Vandam became a most influential anesthesiologist, some say, a giant. He was an example of someone who, with resolve, overcame adversity. His artwork is displayed in countless places, and several of his paintings form part of the Wood Library Museum Heritage Series. Dr Vandam was first a surgeon, but he abandoned surgery and pursued a career in anesthesiology under the leadership of Robert Dripps. He completed his residency training at the University of Pennsylvania and joined its staff in 1949. When he arrived at Brigham and Women's Hospital in the 1950s as director of anesthesia, he embarked on one of the most illustrious careers in American anesthesiology. Dr Vandam published more than 250 original articles, chapters, abstracts, and other reports on a wide variety of subjects including history, art, and pharmacology. His classic article on the complications of neuroaxial blocks is a seminal work in anesthesiology. This article describes how an anesthesiologist who shared an interest with Dr Vandam in the history of anesthesiology came to produce a movie based on his career, the evolution of anesthesia equipment, and the transformation of our specialty.

  3. 76 FR 20010 - Layfe Robert Anthony, M.D.; Denial of Application

    Science.gov (United States)

    2011-04-11

    ... obtaining a registration and maintaining an existing one. See David W. Wang, 72 FR 54297, 54298 (2007); Sheran Arden Yeates, 71 FR 39130, 39131 (2006); Dominick A. Ricci, 58 FR 51104, 51105 (1993); Bobby Watts, 53 FR 11919, 11920 (1988); see also 21 U.S.C. 824(a)(3) (authorizing revocation ``upon a finding...

  4. 76 FR 16823 - Robert L. Dougherty, M.D.; Denial of Application

    Science.gov (United States)

    2011-03-25

    ... powerful tool in reducing polypharmacy is an accurate medical record. It is thus easy to see why the out of... notified that Patient 3 was forging prescriptions on at least three occasions between January 1990 and... forged prescriptions, that he had denied forging the prescriptions, but that the Respondent had told...

  5. 78 FR 14547 - Praxedes E. Alverez Santiago, M.D., Daniel Perez Brisebois, M.D., Jorge Grillasca Palou, M.D...

    Science.gov (United States)

    2013-03-06

    ... Praxedes E. Alverez Santiago, M.D., Daniel Perez Brisebois, M.D., Jorge Grillasca Palou, M.D., Rafael Garcia Nieves, M.D., Francis M. Vazques Roura, M.D., Angel B. Rivera Santos, M.D., Cosme D. Santos Torres, M.D., and Juan L. Vilaro Chardon, M.D.; Analysis of Agreement Containing Consent Order To Aid...

  6. A special irreducible matrix representation of the real Clifford algebra C(3,1)

    CERN Document Server

    Scharnhorst, K

    1999-01-01

    4x4 Dirac (gamma) matrices (irreducible matrix representations of the Clifford algebras C(3,1), C(1,3), C(4,0)) are an essential part of many calculations in quantum physics. Although the final physical results do not depend on any particular representation of the Dirac matrices (e.g. due to the invariance of traces of products of Dirac matrices), the appropriate choice of the representation used may facilitate the analysis. The present paper introduces a particularly symmetric real representation of 4x4 Dirac matrices (Majorana representation) which may prove useful in the future. The consideration is based on the role played by isoclinic 2-planes in the geometry of the real Clifford algebra C(3,0) which provide an invariant geometric frame for it.

  7. Clifford groups of quantum gates, BN-pairs and smooth cubic surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Planat, Michel [Institut FEMTO-ST, CNRS, 32 Avenue de l' Observatoire, F-25044 Besancon (France); Sole, Patrick [CNRS I3S, Les Algorithmes, Euclide B, 2000 route des Lucioles, BP 121, 06903 Sophia Antipolis (France)

    2009-01-30

    The recent proposal (Planat and Kibler 2008 arXiv:0807.3650 [quant-ph]) of representing Clifford quantum gates in terms of unitary reflections is revisited. In this communication, the geometry of a Clifford group G is expressed as a BN-pair, i.e. a pair of subgroups B and N that generate G, is such that intersection H = B intersection N is normal in G, the group W = N/H is a Coxeter group and two extra axioms are satisfied by the double cosets acting on B. The BN-pair used in this decomposition relies on the swap and match gates already introduced for classically simulating quantum circuits (Jozsa and Miyake 2008 arXiv:0804.4050 [quant-ph]). The two- and three-qubit cases are related to the configuration with 27 lines on a smooth cubic surface. (fast track communication)

  8. Application of geometric algebra to electromagnetic scattering the Clifford-Cauchy-Dirac technique

    CERN Document Server

    Seagar, Andrew

    2016-01-01

    This work presents the Clifford-Cauchy-Dirac (CCD) technique for solving problems involving the scattering of electromagnetic radiation from materials of all kinds. It allows anyone who is interested to master techniques that lead to simpler and more efficient solutions to problems of electromagnetic scattering than are currently in use. The technique is formulated in terms of the Cauchy kernel, single integrals, Clifford algebra and a whole-field approach. This is in contrast to many conventional techniques that are formulated in terms of Green's functions, double integrals, vector calculus and the combined field integral equation (CFIE). Whereas these conventional techniques lead to an implementation using the method of moments (MoM), the CCD technique is implemented as alternating projections onto convex sets in a Banach space. The ultimate outcome is an integral formulation that lends itself to a more direct and efficient solution than conventionally is the case, and applies without exception to all types...

  9. From Clifford Algebra of Nonrelativistic Phase Space to Quarks and Leptons of the Standard Model

    CERN Document Server

    Żenczykowski, Piotr

    2015-01-01

    We review a recently proposed Clifford-algebra approach to elementary particles. We start with: (1) a philosophical background that motivates a maximally symmetric treatment of position and momentum variables, and: (2) an analysis of the minimal conceptual assumptions needed in quark mass extraction procedures. With these points in mind, a variation on Born's reciprocity argument provides us with an unorthodox view on the problem of mass. The idea of space quantization suggests then the linearization of the nonrelativistic quadratic form ${\\bf p}^2 +{\\bf x}^2$ with position and momentum satisfying standard commutation relations. This leads to the 64-dimensional Clifford algebra ${Cl}_{6,0}$ of nonrelativistic phase space within which one identifies the internal quantum numbers of a single Standard Model generation of elementary particles (i.e. weak isospin, hypercharge, and color). The relevant quantum numbers are naturally linked to the symmetries of macroscopic phase space. It is shown that the obtained pha...

  10. Clifford algebra approach to pointwise convergence of Fourier series on spheres

    Institute of Scientific and Technical Information of China (English)

    FEI Minggang; QIAN Tao

    2006-01-01

    We offer an approach by means of Clifford algebra to convergence of Fourier series on unit spheres of even-dimensional Euclidean spaces. It is based on generalizations of Fueter's Theorem inducing quaternionic regular functions from holomorphic functions in the complex plane.We, especially, do not rely on the heavy use of special functions. Analogous Riemann-Lebesgue theorem, localization principle and a Dini's type pointwise convergence theorem are proved.

  11. Regular Functions with Values in Ternary Number System on the Complex Clifford Analysis

    Directory of Open Access Journals (Sweden)

    Ji Eun Kim

    2013-01-01

    Full Text Available We define a new modified basis i^ which is an association of two bases, e1 and e2. We give an expression of the form z=x0+ i ^z0-, where x0 is a real number and z0- is a complex number on three-dimensional real skew field. And we research the properties of regular functions with values in ternary field and reduced quaternions by Clifford analysis.

  12. Upper bounds on fault tolerance thresholds of noisy Clifford-based quantum computers

    Energy Technology Data Exchange (ETDEWEB)

    Plenio, M B [Institut fuer Theoretische Physik, Albert-Einstein-Allee 11, Universitaet Ulm, D-89069 Ulm (Germany); Virmani, S [Department of Physics SUPA, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom)], E-mail: shashank.virmani@strath.ac.uk

    2010-03-15

    We consider the possibility of adding noise to a quantum circuit to make it efficiently simulatable classically. In previous works, this approach has been used to derive upper bounds to fault tolerance thresholds-usually by identifying a privileged resource, such as an entangling gate or a non-Clifford operation, and then deriving the noise levels required to make it 'unprivileged'. In this work, we consider extensions of this approach where noise is added to Clifford gates too and then 'commuted' around until it concentrates on attacking the non-Clifford resource. While commuting noise around is not always straightforward, we find that easy instances can be identified in popular fault tolerance proposals, thereby enabling sharper upper bounds to be derived in these cases. For instance we find that if we take Knill's (2005 Nature 434 39) fault tolerance proposal together with the ability to prepare any possible state in the XY plane of the Bloch sphere, then not more than 3.69% error-per-gate noise is sufficient to make it classical, and 13.71% of Knill's {gamma} noise model is sufficient. These bounds have been derived without noise being added to the decoding parts of the circuits. Introducing such noise in a toy example suggests that the present approach can be optimized further to yield tighter bounds.

  13. Experimental estimation of average fidelity of a Clifford gate on a 7-qubit quantum processor.

    Science.gov (United States)

    Lu, Dawei; Li, Hang; Trottier, Denis-Alexandre; Li, Jun; Brodutch, Aharon; Krismanich, Anthony P; Ghavami, Ahmad; Dmitrienko, Gary I; Long, Guilu; Baugh, Jonathan; Laflamme, Raymond

    2015-04-10

    One of the major experimental achievements in the past decades is the ability to control quantum systems to high levels of precision. To quantify the level of control we need to characterize the dynamical evolution. Full characterization via quantum process tomography is impractical and often unnecessary. For most practical purposes, it is enough to estimate more general quantities such as the average fidelity. Here we use a unitary 2-design and twirling protocol for efficiently estimating the average fidelity of Clifford gates, to certify a 7-qubit entangling gate in a nuclear magnetic resonance quantum processor. Compared with more than 10^{8} experiments required by full process tomography, we conducted 1656 experiments to satisfy a statistical confidence level of 99%. The average fidelity of this Clifford gate in experiment is 55.1%, and rises to at least 87.5% if the signal's decay due to decoherence is taken into account. The entire protocol of certifying Clifford gates is efficient and scalable, and can easily be extended to any general quantum information processor with minor modifications.

  14. The ZX-calculus is complete for the single-qubit Clifford+T group

    Directory of Open Access Journals (Sweden)

    Miriam Backens

    2014-12-01

    Full Text Available The ZX-calculus is a graphical calculus for reasoning about pure state qubit quantum mechanics. It is complete for pure qubit stabilizer quantum mechanics, meaning any equality involving only stabilizer operations that can be derived using matrices can also be derived pictorially. Stabilizer operations include the unitary Clifford group, as well as preparation of qubits in the state |0>, and measurements in the computational basis. For general pure state qubit quantum mechanics, the ZX-calculus is incomplete: there exist equalities involving non-stabilizer unitary operations on single qubits which cannot be derived from the current rule set for the ZX-calculus. Here, we show that the ZX-calculus for single qubits remains complete upon adding the operator T to the single-qubit stabilizer operations. This is particularly interesting as the resulting single-qubit Clifford+T group is approximately universal, i.e. any unitary single-qubit operator can be approximated to arbitrary accuracy using only Clifford operators and T.

  15. Kirjavahetus Kaarel Robert Pustaga / Karl Ast Rumor

    Index Scriptorium Estoniae

    Rumor, Karl, pseud., 1886-1971

    2009-01-01

    Kirjavahetus Rio de Janeiros elava Karl Ast Rumori ja New Yorgis elava Kaarel Robert Pusta vahel Eesti kongressi kokkukutsumise vajalikkuse, väliseesti ühingute ja nõukogude, ajakirjanduse ning üldise poliitilise olukorra teemadel

  16. Official portrait of astronaut Robert C. Springer

    Science.gov (United States)

    1988-01-01

    Official portrait of astronaut Robert C. Springer, United Stated Marine Corps (USMC) Colonel, member of Astronaut Class 9 (1980), and mission specialist. Springer wears launch and entry suit (LES) while holding helmet.

  17. Robert Cailliau en zijn Wereldwijd Web

    CERN Document Server

    De Zitter, Aart

    1999-01-01

    Everyone among us knows the World Wide Web and "surfe" perhaps often. But who realizes that it is a Flemish invention? Robert Cailliau is his name, and it has made already for 23 years scientific research in the famous CERN

  18. Woman in Robert Frost’s Poems

    Institute of Scientific and Technical Information of China (English)

    许辉

    2014-01-01

    Most studies of Robert Frost usually focus on his great arts in describing the rural and folksy things, and this thesis is to have a tentative reading of Robert Frost from the feminism perspective. It will shed light on the poet ’s view towards woman by analyzing woman characters in his dialogic poems and his subtle use of pronouns and other semantic strategies.

  19. 75 FR 32743 - Action Affecting Export Privileges; Green Supply, Inc.; Robert Leland Green and William Robert...

    Science.gov (United States)

    2010-06-09

    ... being that of August 13, 2009 (74 FR. 41325, August 14, 2009), has continued the Regulations in effect... Bureau of Industry and Security Action Affecting Export Privileges; Green Supply, Inc.; Robert Leland Green and William Robert Green; Order Denying Export Privileges In the Matter of: Green Supply,...

  20. MD 751: Train Instability Threshold

    CERN Document Server

    Carver, Lee Robert; Metral, Elias; Salvant, Benoit; Levens, Tom; Nisbet, David; Zobov, M; CERN. Geneva. ATS Department

    2016-01-01

    The purpose of this MD is to measure the octupole current thresholds for stability for a single bunch, and then make an immediate comparison (with the same operational settings) for a train of 72 bunches separated by 25ns. From theory, the expected thresholds should be similar. Any discrepancy between the two cases will be of great interest as it could indicate the presence of additional mechanisms that contribute to the instability threshold, for example electron cloud.

  1. On positive definite functions and representations of Clifford ω-semigroups

    Directory of Open Access Journals (Sweden)

    Liliana Pavel

    1995-11-01

    Full Text Available It is known that a complex valued function f on a Clifford ω-semigroup, T=UnGn is positive definite if and only if its restriction fn to Gn, is positive definite for any positive integer n. Then, by the usual Gelfand-Naimark-Segal construction, f and fn (n\\in ℕ give rise to the representations πf of T, respectively πfn of Gn. In this note we study the relationship between the restriction of πf to Gn and the representation of πfn (n\\in ℕ .

  2. Noncommutative physics on Lie algebras, Z_2^n lattices and Clifford algebras

    CERN Document Server

    Majid, S

    2004-01-01

    We survey noncommutative spacetimes with coordinates being enveloping algebras of Lie algebras. We also explain how to do differential geometry on noncommutative spaces that are obtained from commutative ones via a Moyal-product type cocycle twist, such as the noncommutative torus, $\\theta$-spaces and Clifford algebras. The latter are noncommutative deformations of the finite lattice $(Z_2)^n$ and we compute their noncommutative de Rham cohomology and moduli of solutions of Maxwell's equations. We exactly quantize noncommutative U(1)-Yang-Mills theory on $Z_2\\times Z_2$ in a path integral approach.

  3. Analytical error analysis of Clifford gates by the fault-path tracer method

    Science.gov (United States)

    Janardan, Smitha; Tomita, Yu; Gutiérrez, Mauricio; Brown, Kenneth R.

    2016-08-01

    We estimate the success probability of quantum protocols composed of Clifford operations in the presence of Pauli errors. Our method is derived from the fault-point formalism previously used to determine the success rate of low-distance error correction codes. Here we apply it to a wider range of quantum protocols and identify circuit structures that allow for efficient calculation of the exact success probability and even the final distribution of output states. As examples, we apply our method to the Bernstein-Vazirani algorithm and the Steane [[7,1,3

  4. Fermi-Bose duality of the Dirac equation and extended real Clifford-Dirac algebra

    Directory of Open Access Journals (Sweden)

    I.Yu. Krivsky

    2010-01-01

    Full Text Available We have proved on the basis of the symmetry analysis of the standard Dirac equation with nonzero mass that this equation may describe not only fermions of spin 1/2 but also bosons of spin 1. The new bosonic symmetries of the Dirac equation in both the Foldy-Wouthuysen and the Pauli-Dirac representations are found. Among these symmetries (together with the 32-dimensional pure matrix algebra of invariance the new, physically meaningful, spin 1 Poincare symmetry of equation under consideration is proved. In order to provide the corresponding proofs, a 64-dimensional extended real Clifford-Dirac algebra is put into consideration.

  5. Multi-vector Spherical Monogenics, Spherical Means and Distributions in Clifford Analysis

    Institute of Scientific and Technical Information of China (English)

    Fred BRACKX; Bram De KNOCK Hennie; De SCHEPPER

    2005-01-01

    New higher-dimensional distributions have been introduced in the framework of Clifford analysis in previous papers by Brackx, Delanghe and Sommen. Those distributions were defined using spherical co-ordinates, the "finite part" distribution Fp xμ+ on the real line and the generalized spherical means involving vector-valued spherical monogenics. In this paper, we make a second generalization,leading to new families of distributions, based on the generalized spherical means involving a multivector-valued spherical monogenic. At the same time, as a result of our attempt at keeping the paper self-contained, it offers an overview of the results found so far.

  6. PT symmetry, Cartan decompositions, Lie triple systems and Krein space related Clifford algebras

    CERN Document Server

    Guenther, Uwe

    2010-01-01

    Gauged PT quantum mechanics (PTQM) and corresponding Krein space setups are studied. For models with constant non-Abelian gauge potentials and extended parity inversions compact and noncompact Lie group components are analyzed via Cartan decompositions. A Lie triple structure is found and an interpretation as PT-symmetrically generalized Jaynes-Cummings model is possible with close relation to recently studied cavity QED setups with transmon states in multilevel artificial atoms. For models with Abelian gauge potentials a hidden Clifford algebra structure is found and used to obtain the fundamental symmetry of Krein space related J-selfadjoint extensions for PTQM setups with ultra-localized potentials.

  7. 76 FR 53346 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-08-26

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Jersey Avenue, SE., Washington, DC 20590. Hand Delivery: Deliver to Mail address above between 9 a.m. and...) This AD applies to The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83),...

  8. 76 FR 41651 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-07-15

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION...) This AD applies to The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83),...

  9. Social kapital- introduktion til Robert Putnam

    DEFF Research Database (Denmark)

    Skaarup, Inge Marie

    2011-01-01

    Artiklen behandler de tre centrale begreber i Robert Putnams teori om social kapital. Det drejer sig om følgende: Fælles normer for generaliseret gensidighed, netværk og social tillid. Begreberne beskrives og diskuteres, bl.a. ved brug af eksempler fra pædagogisk praksis.......Artiklen behandler de tre centrale begreber i Robert Putnams teori om social kapital. Det drejer sig om følgende: Fælles normer for generaliseret gensidighed, netværk og social tillid. Begreberne beskrives og diskuteres, bl.a. ved brug af eksempler fra pædagogisk praksis....

  10. Robert Bellah, religion og menneskelig evolution

    DEFF Research Database (Denmark)

    Jensen, Hans Jørgen Lundager

    2013-01-01

    ENGLISH ABSTRACT: Introduction to and discussion of Robert Bellah's major book, Religion in Human Evolution (2011). which defines and describes tribal religion (religion in pre-state societies), archaic religion (religion in early states) and religious currents in the axial age, the period...... to engage in historical and comparative studies. DANSK RESUMÉ: Introduktion til og diskussion af Robert Bellahs hovedværk fra 2011, Religion in Human Evolution, der definerer og beskriver tribal religion, dvs. religion i før-statslige samfund, arkaisk religion, dvs. religion i tidlig-statslige kulturer samt...

  11. The Inharmonious Conflicts in Robert Frost's Poetry

    Institute of Scientific and Technical Information of China (English)

    杨苗

    2015-01-01

    Robert Frost is one of the most distinguished poets,most of his poems are about the inharmonious relationship between nature and men,Conflicts are like a“thread”appearing in his poems.Frost’s true philosophy on men and life contributes to his wisdom and artistic poems.Frost tries to illustrate the conflict between nature and men in philosophy concern.

  12. ROBERT MUNDELL, FATHER OF THE EURO

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Robert Mundell, CC, Ph.D., Ll.D., winner of theNobel Memorial Prize in Economic Science in1999, is University Professor at Columbia University,where he has taught since 1974. He is known as anauthority on international monetary systems,macroeconomic policy management, exchange ratesystems, supply-side economics, transition economiesand monetary history.

  13. Enthusiastic Collaboration: A Conversation with Robert Gable

    Science.gov (United States)

    Kaff, Marilyn; Teagarden, James; Zabel, Robert H.

    2017-01-01

    Robert A. Gable is the Constance and Colgate Darden Professor of Special Education and Eminent Scholar at Old Dominion University, Norfolk, Virginia. He earned his PhD from George Peabody College of Vanderbilt University and was on the faculty at Peabody--Vanderbilt and the University of Pittsburgh prior to his appointment at Old Dominion…

  14. Robert Alexander and His Passionate Philosophy (Profile).

    Science.gov (United States)

    Bosseau, Remi Barclay

    1994-01-01

    Discusses the passionate philosophy of Robert Alexander, founder and director of living stage theater company and his views of art, creativity, the entire process of learning, politics, philosophy, and hope. Presents several excerpts from Alexander's presentations for artists and teachers during Living Stage residencies in cities around the…

  15. Robert Aumann

    DEFF Research Database (Denmark)

    Hansen, Pelle Guldborg

    2007-01-01

    In this interview Nobel Prize Winner Robert Aumann talks about how he was initially drawn into game theory, when he came to think of formalizing the folk-theorem, the proper role of game theory in relation to other disciplines and why behavioral game theory probably won't last long....

  16. Robert Aymar, Director-General of CERN

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    Robert Aymar, photographed in 2003 before taking his position as Director-General at CERN, succeeding Luciano Maiani in 2004. At this time, Aymar was director of the International Thermonuclear Experimental Reactor (ITER) although he had already been involved with developments at CERN, chairing the External Review Committee, set up in 2001 in response to the increased cost of the LHC.

  17. A. Robert Rogers and International Librarianship.

    Science.gov (United States)

    Linderman, Eric Graham

    This paper provides a biographical study of A. Robert Rogers, Dean of the School of Library Science at Kent State University from 1977-1985, with a focus on his writing, teaching, and study of international librarianship. The following sources of information were used: (1) materials kept in the Department of Special Collections and Archives in the…

  18. Robert Lee Pyle honored with emeritus status

    OpenAIRE

    Douglas, Jeffrey S.

    2007-01-01

    Dr. Robert Lee Pyle of Blacksburg, professor of cardiology in the Department of Small Animal Clinical Science at the Virginia-Maryland Regional College of Veterinary Medicine at Virginia Tech, was conferred the "professor emeritus" title by the Virginia Tech Board of Visitors during the board's quarterly meeting August 27.

  19. Beyond the Lessons of Robert Fulghum's Sandbox.

    Science.gov (United States)

    Herman, William E.

    1995-01-01

    Examines Robert Fulghum's book, "All I Really Need to Know I Learned in Kindergarten," recommending that all people delve into their own early childhood experiences to better understand the issue. The paper compares the author's early childhood experiences and insights on the value of such experiences to Fulghum's experiences. (SM)

  20. The Roberts Court and Academic Freedom

    Science.gov (United States)

    Rahdert, Mark C.

    2007-01-01

    Since President Bush named Chief Justice John G. Roberts Jr. and Justice Samuel A. Alito Jr. to the Supreme Court, speculation has run high as to where the new court may be headed. Citing three recent cases ("Morse v. Frederick", "Rumsfeld v. Forum for Academic and Institutional Rights, Inc." and "Garcetti v. Ceballos"), Rahdert expresses concern…

  1. The Anthropology of Clifford Geertz. Cultural Theory and the Interpretative Analysis of Cultures by Gordana Gorunović

    Directory of Open Access Journals (Sweden)

    Marija Krstić

    2016-03-01

    Full Text Available Gordana Gorunović. Antropologija Kliforda Gerca. Kulturna teorija i interpretativna analiza kultura. 2010. Beograd: Srpski genealoški centar i Odeljenje za etnologiju i antropologiju Filozofskog fakulteta. str. 286. [The Anthropology of Clifford Geertz. Cultural Theory and the Interpretative Analysis of Cultures

  2. 76 FR 39251 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-07-06

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Roger Durbin, Aerospace.... Applicability (c) This AD applies to all The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83...

  3. 76 FR 1993 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-01-12

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION.... Applicability (c) This AD applies to The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83...

  4. 76 FR 13543 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-03-14

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. Hand Delivery: Deliver to Mail... stabilizer is similar in design and loading to that of the Model DC-9-81 (MD-81), DC- 9-82 (MD-82),...

  5. ClIfford Geertz’e Göre Kültürel Bir Sistem Olarak Din Religion as a Cultural System by Clifford Geertz

    OpenAIRE

    HASANOV, BEHRAM

    2015-01-01

    ÖZETBu makale Clifford Geertz’in, dini kültürel bir sistem olarak incelemek üzere geliştirdiğikendi tanım ve metotlarına dayanan görüşlerini ele almaktadır. Makale Geertz’inyorumlayıcı yaklaşımını ve kültürü yorumlama yöntemi üzerine yoğunlaşmaktadır.Çalışma aynı zamanda Geertz’in dine nasıl yaklaştığını ve dinle toplumsal hayatı nasılilişkilendirdiğini incelemektedir. Makalede Geertz’in düşüncelerinin ve metodolojisininönemi ve dini yorumlamada başarısız olduğu noktalar da genel hatlarıyla b...

  6. 77 FR 40609 - Robert D. Willis Power Rate

    Science.gov (United States)

    2012-07-10

    ... Southwestern Power Administration Robert D. Willis Power Rate AGENCY: Southwestern Power Administration, DOE... replacements to the hydroelectric generating facilities. The Administrator has developed a proposed Robert D... September 30, 2016.\\1\\ \\1\\ FERC on April 27, 2009 confirmed and approved the existing Robert D. Willis...

  7. CONSTITUTIONAL TRADITIONALISM IN THE ROBERTS COURT

    Directory of Open Access Journals (Sweden)

    Louis J Virelli III

    2011-05-01

    Full Text Available The debate over the role of traditionalism in constitutional interpretation has itself become a tradition. It remains a popular and controversial topic among constitutional scholars and presents normative questions that are as divisive, difficult, and important today as at the Founding. Missing from the discussion, however, is a comprehensive account of how the Supreme Court has employed traditionalism-an approach that looks for meaning in present manifestations of longstanding practices or beliefs-in its constitutional jurisprudence. This project is the first to fill this gap by providing an exhaustive and systematic analysis of the Court's use of constitutional traditionalism. This article focuses on the Roberts Court's first five terms to provide an empirical foundation that will not only offer previously unavailable insights into the Court's current traditionalist practices, but will also set forth a useful framework for the ongoing normative debate over traditionalism. This project uses content analysis of key terms to identify every instance in which the Roberts Court employed traditionalism to interpret the Constitution. More specifically, this project set out to answer the following three questions: First, how frequently does the Roberts Court employ traditionalism in its constitutional jurisprudence? Second, how robust is the Court's use of traditionalism (i.e., is it used to interpret a broad or narrow range of constitutional provisions? And finally, how often and in what contexts do individual Justices on the Roberts Court rely on traditionalism in their own constitutional opinions? The research provided here suggests answers to all three of these questions. First, the data indicate that traditionalism has been relied upon regularly by the Roberts Court, appearing in nearly half of the Court's constitutional cases. Second, traditionalism is frequently applied to a wide variety of constitutional provisions: Two-thirds of the

  8. Cavity Voltage Phase Modulation MD

    CERN Document Server

    Mastoridis, Themistoklis; Molendijk, John; Timko, Helga; CERN. Geneva. ATS Department

    2016-01-01

    The LHC RF/LLRF system is currently configured for extremely stable RF voltage to minimize transient beam loading effects. The present scheme cannot be extended beyond nominal beam current since the demanded power would exceed the peak klystron power and lead to saturation. A new scheme has therefore been proposed: for beam currents above nominal (and possibly earlier), the cavity phase modulation by the beam will not be corrected (transient beam loading), but the strong RF feedback and One-Turn Delay feedback will still be active for loop and beam stability in physics. To achieve this, the voltage set point will be adapted for each bunch. The goal of this MD was to test a new algorithm that would adjust the voltage set point to achieve the cavity phase modulation that would minimize klystron forward power.

  9. Robert Boyle: The Founder of Modern Chemistry

    Science.gov (United States)

    Williams, Kathryn R.

    2009-02-01

    When I learned that the 2009 Earth Day features "air", I started thinking about a suitable way to link the topic to past JCE issues. No small task, considering that I had already covered oxygen and nitrogen in the 2003 and 2005 Earth Day issues. So much for chemical composition. So, I turned to physical properties—the gas laws—that could equally be called the "air laws", since "air" was a generic word for a gas in the centuries when the laws were formulated. For Earth Day 2009, I focus on Robert Boyle, who discovered the first of the gas laws. In addition to at least 20 papers describing Boyle's Law demonstrations and experiments, The Honorable Robert Boyle (1627-1691) is the subject of five papers in JCE .

  10. H(o)lder Norm Estimate for a Hilbert Transform in Hermitean Clifford Analysis

    Institute of Scientific and Technical Information of China (English)

    Ricardo ABREU-BLAYA; Juan BORY-REYES; Fred BRACKX; Hennie DE SCHEPPER

    2012-01-01

    A Hilbert transform for H(o)lder continuous circulant (2 × 2) matrix functions,on the dsummable (or fractal) boundary T of a Jordan domain Ω in R2n,has recently been introduced within the framework of Hermitean Clifford analysis.The main goal of the present paper is to estimate the H(o)lder norm of this Hermitean Hilbert transform.The expression for the upper bound of this norm is given in terms of the H(o)lder exponents,the diameter of T and a specific d-sum (d > d) of the Whitney decomposition of Ω.The result is shown to include the case of a more standard Hilbert transform for domains with left Ahlfors-David regular boundary.

  11. q-deformed harmonic and Clifford analysis and the q-Hermite and Laguerre polynomials

    CERN Document Server

    Coulembier, Kevin

    2010-01-01

    We define a q-deformation of the Dirac operator, inspired by the one dimensional q-derivative. This implies a q-deformation of the partial derivatives. By taking the square of this Dirac operator we find a q-deformation of the Laplace operator. This allows to construct q-deformed Schroedinger equations in higher dimensions. The equivalence of these Schroedinger equations with those defined on q-Euclidean space in quantum variables is shown. We also define the m-dimensional q-Clifford-Hermite polynomials and show their connection with the q-Laguerre polynomials. These polynomials are orthogonal with respect to an m-dimensional q-integration, which is related to integration on q-Euclidean space. The q-Laguerre polynomials are the eigenvectors of an su_q(1|1)-representation.

  12. q-deformed harmonic and Clifford analysis and the q-Hermite and Laguerre polynomials

    Science.gov (United States)

    Coulembier, K.; Sommen, F.

    2010-03-01

    We define a q-deformation of the Dirac operator, inspired by the one-dimensional q-derivative. This implies a q-deformation of the partial derivatives. By taking the square of this Dirac operator we find a q-deformation of the Laplace operator. This allows us to construct q-deformed Schrödinger equations in higher dimensions. The equivalence of these Schrödinger equations with those defined on q-Euclidean space in quantum variables is shown. We also define the m-dimensional q-Clifford-Hermite polynomials and show their connection with the q-Laguerre polynomials. These polynomials are orthogonal with respect to an m-dimensional q-integration, which is related to integration on q-Euclidean space. The q-Laguerre polynomials are the eigenvectors of an suq(1|1)-representation.

  13. Clifford and Riemann-Finsler structures in geometric mechanics and gravity

    CERN Document Server

    Vacaru, S; Gaburov, E

    2006-01-01

    The book contains a collection of works on Riemann-Cartan and metric-affine manifolds provided with nonlinear connection structure and on generalized Finsler-Lagrange and Cartan-Hamilton geometries and Clifford structures modelled on such manifolds. The choice of material presented has evolved from various applications in modern gravity and geometric mechanics and certain generalizations to noncommutative Riemann-Finsler geometry. The authors develop and use the method of anholonomic frames with associated nonlinear connection structure and apply it to a number of concrete problems: constructing of generic off-diagonal exact solutions, in general, with nontrivial torsion and nonmetricity, possessing noncommutative symmetries and describing black ellipsoid/torus configurations, locally anisotropic wormholes, gravitational solitons and warped factors and investigation of stability of such solutions; classification of Lagrange/ Finsler -- affine spaces; definition of nonholonomic Dirac operators and their applic...

  14. New insights in the standard model of quantum physics in Clifford algebra

    CERN Document Server

    Daviau, Claude

    2013-01-01

    Why Clifford algebra is the true mathematical frame of the standard model of quantum physics. Why the time is everywhere oriented and why the left side shall never become the right side. Why positrons have also a positive proper energy. Why there is a Planck constant. Why a mass is not a charge. Why a system of particles implies the existence of the inverse of the individual wave function. Why a fourth neutrino should be a good candidate for black matter. Why concepts as “parity” and “reverse” are essential. Why the electron of a H atom is in only one bound state. Plus 2 very remarkable identities, and the invariant wave equations that they imply. Plus 3 generations and 4 neutrinos. Plus 5 dimensions in the space and 6 dimensions in space-time…

  15. P-Loop Oscillator on Clifford Manifolds and Black Hole Entropy

    CERN Document Server

    Castro, C; Castro, Carlos; Granik, Alex

    2000-01-01

    A new relativity theory, or more concretely an extended relativity theory, actively developed by one of the authors incorporated 3 basic concepts. They are the old Chu's idea about bootstarpping, Nottale's scale relativity, and enlargement of the conventional time-space by inclusion of noncommutative Clifford manifolds where all p-branes are treated on equal footing. The latter allowed one to write a master action functional. The resulting functional equation is simplified and applied to the p-loop oscillator. Its respective solution is a generalization of the conventional point oscillator. In addition , it exhibits some novel features: an emergence of two explicit scales delineating the asymptotic regimes (Planck scale region and a smooth region of a conventional point oscillator). In the most interesting Planck scale regime, the solution reproduces in an elementary fashion the basic relations of string theory (including string tension quantization). In addition, it is shown that comparing the massive (super...

  16. Kaluza-Klein-Carmeli Metric from Quaternion-Clifford Space, Lorentz' Force, and Some Observables

    Directory of Open Access Journals (Sweden)

    Christianto V.

    2008-04-01

    Full Text Available It was known for quite long time that a quaternion space can be generalized to a Clifford space, and vice versa; but how to find its neat link with more convenient metric form in the General Relativity theory, has not been explored extensively. We begin with a representation of group with non-zero quaternions to derive closed FLRW metric [1], and from there obtains Carmeli metric, which can be extended further to become 5D and 6D metric (which we propose to call Kaluza-Klein-Carmeli metric. Thereafter we discuss some plausible implications of this metric, beyond describing a galaxy’s spiraling motion and redshift data as these have been done by Carmeli and Hartnett [4, 5, 6]. In subsequent section we explain Podkletnov’s rotating disc experiment. We also note possible implications to quantum gravity. Further observations are of course recommended in order to refute or verify this proposition.

  17. THE HILBERT BOUNDARY VALUE PROBLEM FOR GENERALIZED ANALYTIC FUNCTIONS IN CLIFFORD ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    Zhongwei SI; Jinyuan DU

    2013-01-01

    Let R0,n be the real Clifford algebra generated by e1,e2,…,en satisfying eiej +ejei =-2δij,i,j =1,2,…,n.e0 is the unit element.Let Ω be an open set.A function f is called left generalized analytic in Ω if f satisfies the equation Lf =0,(0.1)where L =q0e0(δ)x0 + q1e1(δ)x1 + … +qnen(δ)xn,qi > 0,i =0,1,…,n.In this article,we first give the kernel function.for the generalized analytic function.Further,the Hilbert boundary value problem for generalized analytic functions in Rn+1+ will be investigated.

  18. Architecture of (impossibilities: Robert Smithson's expositive spaces

    Directory of Open Access Journals (Sweden)

    Bráulio Romeiro

    2012-06-01

    Full Text Available This work investigates the North American artist Robert Smithson’s considerations on traditional expositive spaces: the museum and art gallery, as well as unusual and unexplored spaces by art up to that time. Looking through his texts we notice some enhanced perspectives and reset others, increasing limitation set on White Cube’s abstract and neutral quality and the substantiation on ideologies behind of these spaces manifestation.

  19. Aitab hädaldamisest / Robert Antropov

    Index Scriptorium Estoniae

    Antropov, Robert, 1965-

    2006-01-01

    Endine politseijuht on seisukohal, et politseinike ja päästjate nappuses ei saa süüdistada ainult väikseid palku, küsimus on valikutes: kuidas ja millesse ressursse paigutada. Kalle Laanet ja Raivo Aeg vastavad küsimusele, mis on nende haldusalas konkreetselt kavas, et politsei saaks täita oma tegevusprioriteeti 100% ja tagada sisejulgeoleku. Vt. ka Robert Antropovi kommentaari 7. aug. Eesti Päevaleht lk. 2

  20. Degenerate Space-Time Paths and the Non-locality of Quantum Mechanics in a Clifford Substructure of Space-Time

    CERN Document Server

    Borchsenius, K

    1999-01-01

    The quantized canonical space-time coordinates of a relativistic point particle are expressed in terms of the elements of a complex Clifford algebra which combines the complex properties of SL(2.C) and quantum mechanics. When the quantum measurement principle is adapted to the generating space of the Clifford algebra we find that the transition probabilities for twofold degenerate paths in space-time equals the transition amplitudes for the underlying paths in Clifford space. This property is used to show that the apparent non-locality of quantum mechanics in a double slit experiment and in an EPR type of measurement is resolved when analyzed in terms of the full paths in the underlying Clifford space. We comment on the relationship of this model to the time symmetric formulation of quantum mechanics and to the Wheeler-Feynman model.

  1. Fast Collision Attack on MD5

    NARCIS (Netherlands)

    Stevens, M.M.J.

    2006-01-01

    In this paper, we present an improved attack algorithm to find two-block collisions of the hash function MD5. The attack uses the same differential path of MD5 and the set of sufficient conditions that was presented by Wang et al. We present a new technique which allows us to deterministically fulfi

  2. Harvesting graphics power for MD simulations

    NARCIS (Netherlands)

    van Meel, J.A.; Arnold, A.; Frenkel, D.; Portegies Zwart, S.F.; Belleman, R.G.

    2008-01-01

    We discuss an implementation of molecular dynamics (MD) simulations on a graphic processing unit (GPU) in the NVIDIA CUDA language. We tested our code on a modern GPU, the NVIDIA GeForce 8800 GTX. Results for two MD algorithms suitable for short-ranged and long-ranged interactions, and a congruentia

  3. 76 FR 52225 - Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD...

    Science.gov (United States)

    2011-08-22

    ... Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY... Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION... ADs (b) None. Applicability (c) This AD applies to The Boeing Company Model DC-9-81 (MD-81),...

  4. First thoughts on MD priorities for 2012

    CERN Document Server

    Zimmermann, F; Assmann, R

    2012-01-01

    In 2012, 22 days of beam time will be allocated for LHC MDs. In this paper, after recalling the 2011 LHC MD experience, the MD rrequests for 2012 are reviewed. Three primary MD themes for 2012 can be identified: 1)pushing performance in 2012, 2)preparing for 2014/15, and 3)towards maximum luminosity. Example topics include emittance growth in collision or enhanced satellites for theme 1), 25 ns operation for 2), and ATS optics for 3). Structures lists of MD requests and topics for each theme as well as some initial thoughts on the MD priorities are presented. For certain topics, "start-of-fill MDs" are proposed in order to most efficiently use of the available beam time.

  5. Unusually Gothic : Robert Sigl's Laurin (1987)

    OpenAIRE

    Stiglegger, Marcus

    2010-01-01

    Marcus Stiglegger revives a lost Gothic treasure in this brief discussion of Robert Sigl's Laurin—a rare case of German genre film-making and the heir to FW Murnau's legacy. Phantastic genre cinema is very rare in contemporary Germany—especially in the 1980s, the time when Italian horror reached another peak with Dario Argento's Opera (1985). The cliché of the German "easy comedy" ruled mainstream film production at the time, and so it appeared a kind of miracle when 27-year-old writer/direct...

  6. Robert M. Solow (*1924) : Wachstumstheorie und Entwicklung

    OpenAIRE

    Gundlach, Erich

    2002-01-01

    Robert Solow postulierte 1956 in einem bahnbrechenden Aufsatz, dass technischer Fortschritt die einzig mögliche Quelle für langfristiges Wirtschaftswachstum sei. Im folgenden Jahr konnte er nachweisen, dass sich das Wirtschaftswachstum der USA in der ersten Hälfte des zwanzigsten Jahrhunderts in der Tat fast vollständig mit technischem Fortschritt erklären ließ. Diese beiden Arbeiten sind inzwischen zu Klassikern der makroökonomischen Analyse geworden: Jeder Ökonom kennt das Solow-Modell und ...

  7. Interview of Robert H.Grubbs

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Robert H.Grubbs is a Nobel Laureate and the Victor and Elizabeth Atkins Professor of Chemistry at the California Institute of Technology,USA.He grew up in the State of Kentucky,and received his BS and MS degrees from the University of Florida.Grubbs conducted Ph.D.studies under the guidance ofRonald Breslow at Columbia University [1],and postdoctoral work with J AMes P.Collman at Stanford University.Grubbs shared the 2005 Nobel Prize in Chemistry with Yves Chauvin and Richard R.Schrock for "for the development of the metathesis method in organic synthesis" [2],among many honors and awards he has received.

  8. Os fundamentos do liberalismo em Robert Nozick

    OpenAIRE

    Voltaire de Freitas Michel

    2003-01-01

    A dissertação propõe o exame da teoria da justiça e do Estado apresentadas pelo filósofo americano Robert Nozick em sua obra Anarchy, State and Utopia (1974). Na primeira parte do trabalho, três conceitos fundamentais da tradição liberal clássica são examinados: estado de natureza, justiça e direitos, e Estado Liberal. Os paradigmas adotados são John Locke e Immanuel Kant. O primeiro, porque Nozick parte de pressupostos lockeanos para desenvolver sua teoria do Estado. O segundo, pelo paraleli...

  9. Robert Smithson on the path of Prometheus

    Directory of Open Access Journals (Sweden)

    J. Guillermo Merchán-Basabe

    2014-12-01

    Full Text Available En este texto se analiza la intervención artística de espacios y se hace una crítica a la concepción estética de la naturaleza en Robert Smithson. Se postula que la obra de Smithson polemiza con las concepciones pródigas y catastróficas de la naturaleza, al tiempo que propone implícitamente, por medio de acciones que se valen del impulso tecnocientífico, una redención de la naturaleza.

  10. Clifford algebra is the natural framework for root systems and Coxeter groups. Group theory: Coxeter, conformal and modular groups

    CERN Document Server

    Dechant, Pierre-Philippe

    2016-01-01

    In this paper, we make the case that Clifford algebra is the natural framework for root systems and reflection groups, as well as related groups such as the conformal and modular groups: The metric that exists on these spaces can always be used to construct the corresponding Clifford algebra. Via the Cartan-Dieudonn\\'e theorem all the transformations of interest can be written as products of reflections and thus via `sandwiching' with Clifford algebra multivectors. These multivector groups can be used to perform concrete calculations in different groups, e.g. the various types of polyhedral groups, and we treat the example of the tetrahedral group $A_3$ in detail. As an aside, this gives a constructive result that induces from every 3D root system a root system in dimension four, which hinges on the facts that the group of spinors provides a double cover of the rotations, the space of 3D spinors has a 4D euclidean inner product, and with respect to this inner product the group of spinors can be shown to be cl...

  11. Robert Adrian X / Robert Adrian X ; interv. Tilman Baumgärtel

    Index Scriptorium Estoniae

    Adrian X, Robert

    2006-01-01

    1997. a. Ljubljanas tehtud intervjuu 1972. aastast Viinis elava kanada kunstniku Robert Adrian X-ga (sünd. 1935), kes töötas 1970-ndate lõpul ja 1980-ndate alguses telefoni, faksi ja varaste kirjakstisüsteemidega kunstiprojektide kallal, osales 1970-ndate ja 1980-ndate multimeediaprojektides

  12. Climate and weather across scales: singularities and stochastic Levy-Clifford algebra

    Science.gov (United States)

    Schertzer, Daniel; Tchiguirinskaia, Ioulia

    2016-04-01

    There have been several attempts to understand and simulate the fluctuations of weather and climate across scales. Beyond mono/uni-scaling approaches (e.g. using spectral analysis), this was done with the help of multifractal techniques that aim to track and simulate the scaling singularities of the underlying equations instead of relying on numerical, scale truncated simulations of these equations (Royer et al., 2008, Lovejoy and Schertzer, 2013). However, these techniques were limited to deal with scalar fields, instead of dealing directly with a system of complex interactions and non trivial symmetries. The latter is unfortunately indispensable to answer to the challenging question of being able to assess the climatology of (exo-) planets based on first principles (Pierrehumbert, 2013) or to fully address the question of the relevance of quasi-geostrophic turbulence and to define an effective, fractal dimension of the atmospheric motions (Schertzer et al., 2012). In this talk, we present a plausible candidate based on the combination of Lévy stable processes and Clifford algebra. Together they combine stochastic and structural properties that are strongly universal. They therefore define with the help of a few physically meaningful parameters a wide class of stochastic symmetries, as well as high dimensional vector- or manifold-valued fields respecting these symmetries (Schertzer and Tchiguirinskaia, 2015). Lovejoy, S. & Schertzer, D., 2013. The Weather and Climate: Emergent Laws and Multifractal Cascades. Cambridge U.K. Cambridge Univeristy Press. Pierrehumbert, R.T., 2013. Strange news from other stars. Nature Geoscience, 6(2), pp.81-83. Royer, J.F. et al., 2008. Multifractal analysis of the evolution of simulated precipitation over France in a climate scenario. C.R. Geoscience, 340(431-440). Schertzer, D. et al., 2012. Quasi-geostrophic turbulence and generalized scale invariance, a theoretical reply. Atmos. Chem. Phys., 12, pp.327-336. Schertzer, D

  13. Robert W. Rieber (1932-2015).

    Science.gov (United States)

    Weizmann, Fredric

    2016-01-01

    Presents the obituary of Robert W. Rieber (1932-2015). Robert W. Rieber, the son of immigrants from the former Austro- Hungarian Empire was born March 24, 1932. He earned a bachelor's degree at Pennsylvania State University and a master's degree in speech pathology at Temple University. He moved to New York City, New York, in 1957, working as a speech pathologist at New York University. In 1960, he accepted an academic position at Pace University, subsequently moving to the John Jay College of Criminal Justice at City University of New York. He held appointments at Columbia University and, following his retirement from John Jay, at Fordham University. Bob founded and edited several journals, including The Journal of Communication Disorders, The Journal of Social Distress and the Homeless, and The Journal of Psycholinguistics Research. While on leave from Pace, he completed his doctorate at the University of London with a dissertation on the relationship between language and psychopathology. Rieber died at his summer home in Maine on April 9, 2015. He was 83.

  14. Obituary of Philip H. Cooper, MD.

    Science.gov (United States)

    Patterson, James W; Wick, Mark R; Mills, Stacey E

    2015-08-01

    Dermatopathology lost a giant in the field with the death of Philip H. Cooper, MD, on Friday, January 30, 2015. The following obituary represents a celebration of his life and his contributions to our field.

  15. The plays of Lillian Hellman, Clifford Odets and William Inge on Slovene stages

    Directory of Open Access Journals (Sweden)

    Mateja Slunjski

    2002-12-01

    Full Text Available After the Second World War, Slovene theatres started to include in their repertoires more and more American authors and their plays. Their choice were varied, from serious dramas by Eugene O'Neill, Tennessee Williams and Arthur Miller, to comedies by Norman Krasna and John Van Druten dependant mostly on the availability of the texts. In the immediate postwar years the theatres liked to present playwrights with progressive ideas in their plays, such as Lillian Hellman and her "The Little Foxes", which was successfully produced at three Slovene theatres, while her "The Children's Hour" received negative reviews. In the fifties, three theatres chose two plays by Clifford Odets, "Golden Boy" and "Country Girl", mainly because of his socially critical ideas and his admiration of humanity. His plays were rather well received; however, the critics doubted his literary genius. William Inge and his plays, "Come Back, Little Sheba", "Picnic" and "Bus Stop", chosen mainly because of the warmth with which the author depicted the tragedy and the beauty of life, were produced at three Slovene theatres. The author received rather wide-ranging opinions from the critics. Some thought him to be an unoriginal depicter of dull American life, while others praised his lyricism and new dramatic techniques.

  16. Color and Contingency in Robert Boyle's Works.

    Science.gov (United States)

    Baker, Tawrin

    2015-01-01

    This essay investigates the relationship between color and contingency in Robert Boyle's Experiments and Considerations Touching Colours (1664) and his essays on the unsuccessfulness of experiments in Certain Physiological Essays (1661). In these two works Boyle wrestles with a difficult practical and philosophical problem with experiments, which he calls the problem of contingency. In Touching Colours, the problem of contingency is magnified by the much-debated issue of whether color had any deep epistemic importance. His limited theoretical principle guiding him in Touching Colours, that color is but modified light, further exacerbated the problem. Rather than theory, Boyle often relied on craftsmen, whose mastery of color phenomena was, Boyle mentions, brought about by economic forces, to determine when colors were indicators of important 'inward' properties of substances, and thus to secure a solid foundation for his experimental history of color.

  17. 75 FR 11112 - Action Affecting Export Privileges; Robert Kraaipoel

    Science.gov (United States)

    2010-03-10

    ... successive Presidential Notices, the most recent being that of August 13, 2009 (74 FR 41,325 (Aug. 14, 2009... Bureau of Industry and Security Action Affecting Export Privileges; Robert Kraaipoel In the Matter of: Robert Kraaipoel, P.O. Box 418, Heerhugowaard, Netherlands 1700AK. and Flemming Straat 36,...

  18. Delivering Higher Education to Adults: An Interview with Robert Mendenhall

    Science.gov (United States)

    Finney, Joni E.

    2012-01-01

    This article presents an interview with Robert Mendenhall, president of Western Governors University, who is the 2012 recipient of the Virginia B. Smith (VBS) Innovative Leadership Award. The annual award recognizes his leadership in redesigning higher education delivery for adult students. In the interview, Robert Mendenhall talks about his work…

  19. Anthony ROBERTS 5 March 1948 – 16 January 2008

    CERN Multimedia

    TS Department

    2008-01-01

    We deeply regret to announce the death of Mr Anthony ROBERTS on 16 January 2008. Mr ROBERTS, born on 05.03.1948, worked in the HR Department and had been employed at CERN since 01.06.1973. The Director-General has sent his family a message of condolence on behalf of the CERN staff. Social Affairs Service Human Resources Department

  20. MD5算法的分析和改进%Analysis and Improvement of .MD5 Algorithm

    Institute of Scientific and Technical Information of China (English)

    么丽颖

    2011-01-01

    首先研究了MD5算法,并总结了MD5算法的特点及性能,在研究MD5算法的基础之上,提出了MD5改进加密算法.最后,对MD5算法与MD5改进算法对应于相关数据、性能进行了比较.%At first , MD5 algorithm is researched, and the characteristic and capability of the MD5 are summaried in the paper. The improved MD5 algorithm is put forward based on the research of the MDS. At last, the contrast between MD5 algorithm and the improved MD5 algorithm in related datum and capability are put forward.

  1. New Message Differences for Collision Attacks on MD4 and MD5

    Science.gov (United States)

    Sasaki, Yu; Wang, Lei; Kunihiro, Noboru; Ohta, Kazuo

    In 2005, collision resistance of several hash functions was broken by Wang et al. The strategy of determining message differences is the most important part of collision attacks against hash functions. So far, many researchers have tried to analyze Wang et al.'s method and proposed improved collision attacks. Although several researches proposed improved attacks, all improved results so far were based on the same message differences proposed by Wang et al. In this paper, we propose new message differences for collision attacks on MD4 and MD5. Our message differences of MD4 can generate a collision with complexity of less than two MD4 computations, which is faster than the original Wang et al.'s attack, and moreover, than the all previous attacks. This is the first result that improves the complexity of collision attack by using different message differences from Wang et al.'s. Regarding MD5, so far, no other message difference from Wang et al.'s is known. Therefore, study for constructing method of other message differences on MD5 should be interesting. Our message differences of MD5 generates a collision with complexity of 242 MD5 computations, which is slower than the latest best attack. However, since our attack needs only 1 bit difference, it has some advantages in terms of message freedom of collision messages.

  2. James Clifford's Influence on Bronislaw Malinowski: The Moral Implications of Intertemporal Heterarchy

    Directory of Open Access Journals (Sweden)

    Miloš Milenković

    2016-02-01

    Full Text Available Drawing on the explanation already offered for the confusion of positivism with realism in the epistemological imagination of the author and founder of postmodern anthropology, the paper analyzes the moral implications of dealing with problems characteristic of the philosophy of science by literary-theoretical means. The transdisciplinary migration of "realism" from literary theory to social science methodology has produced a whole new history of anthropology. The history of pre-postmodern anthropology constructed in this manner can be said to fit the register of some sort of comparative-cultural theory of retroactive moral judgement, complementing postmodern anthropology as a general theory of writing by political subjects, so that the theoretical-methodological dilemmas of postmodern anthropology do not constitute proof of the legitimacy of a holistic interpretation of the discipline’s founders’ intentions, but rather lead to neo-pyrrhonic, formalistic endeavours to uphold, by respecting academic trappings, the academic authority of the discipline whose subject, method and purpose, as a rule, even colleagues from adjacent departments for various reasons fail to understand. In the paper, evidence for this is derived from Clifford's writing of Malinowski, and the moral implications of the unfortunate analogy between the writing of political subjects and the writing of disciplinary founders are followed through. The paper then goes on to explain that the critique of the possibilities of misuse, particularly through political instrumentalization, of anthropological fictions as evidence of Others did not have to come at the cost of sacrificing the semblance of continuity in the establishment of anthropology as a proper academic discipline.

  3. Quantum gravity, Clifford algebras, fuzzy set theory and the fundamental constants of nature

    Energy Technology Data Exchange (ETDEWEB)

    El Naschie, M.S

    2004-05-01

    In a recent paper entitled 'Quantum gravity from descriptive set theory', published in Chaos, Solitons and Fractals, we considered following the P-adic quantum theory, the possibility of abandoning the Archimedean axiom and introducing a fundamental physical limitation on the smallest length in quantum spacetime. Proceeding that way we arrived at the conclusion that maximising the Hawking-Bekenstein informational content of spacetime makes the existence of a transfinite geometry for physical 'spacetime' plausible or even inevitable. Subsequently we introduced a mathematical description of a transfinite, non-Archimedean geometry using descriptive set theory where a similar conclusion regarding the transfiniteness of quantum spacetime may be drawn from the existence of the Unruh temperature. In particular we introduced a straight forward logarithmic gauge transformation linking, as far as we are aware for the first time, classical gravity with the electroweak via a version of informational entropy. That way we found using {epsilon}{sup ({infinity}}{sup )} and complexity theory that {alpha}-bar{sub G}=(2){sup {alpha}-bar{sub ew}}{sup -1}=1.7x10{sup 38} where {alpha}-bar{sub G} is the dimensionless Newton gravity constant and {alpha}-bar{sub ew}=128 is the fine structure constant at the electroweak unification scale. The present work is concerned with more or less the same category of fundamental questions pertinent to quantum gravity. However we switch our mathematical apparatus to a combination of Clifford algebras and set theory. In doing that, the central and vital role of the work of D. Finkelstein becomes much more tangible and clearer than in most of our previous works.

  4. Clifford Algebra-Based Voronoi Algorithm%Voronoi生成的Clifford代数实现方法

    Institute of Scientific and Technical Information of China (English)

    易琳; 袁林旺; 俞肇元; 罗文; 闾国年

    2011-01-01

    引入具有维度融合、坐标无关等特性的Clifford几何代数,构建不同维度统一Voronoi生成框架及算法流程.定义了可支撑不同维度、不同对象间距离、相交及对偶关系的几何、拓扑运算,基于多重向量设计了可支撑不同维度地理对象的统一存储结构及关系表达机制,实现了基于Clifford代数的多维统一Voronoi生成算法.以中国城市气象数据为例进行了算法验证,并分析了算法复杂度.结果表明,该算法可根据输入数据维度自适应地实现相应维度的Voronoi分析,可为以维度统一为特征的GIS分析算法实现提供借鉴.%Based on the superiority of Clifford algebra in multi-dimensional diffusion and coordinate freeing, the unified multi-dimensional generation framework and the algorithm flow of Voronoi have been constructed. Geometric operations and topological operations are defined, which can calculate the distance, intersection and dual among different dimensions and different types of geometric objects. And the unified storage structure and expression mechanism for different dimensional objects are designed with multivector. Finally,2D & 3D experiments and comparison analysis of complexity and accuracy are given to validate the algorithm. The work proves that the designed algorithm is effective and feasible to multi-dimensional Voronoi analysis,and geometric algebra provides a new math tool to establish multi-dimensional unified spatial analysis algorithms.

  5. Robert Aymar awarded Global Energy prize

    CERN Multimedia

    2006-01-01

    CERN Director-General Robert Aymar was recently named one of three laureates of the 2006 Global Energy International Prize for 'the development of scientific and engineering foundation for the ITER project.' ITER is an experiment planned to be built in Europe at Cadarache (South of France) and designed to show the scientific and technological feasibility of a full-scale fusion power reactor. The other two laureates, who worked with Aymar on the project, are former President of the ITER Council, Russian Academician Evgeny Velikhov, and Japan's Dr Masaji Yoshikawa, ITER's former Vice President. Aymar headed ITER from 1994 to 2003. 'This prize is not only a great honour for me and my friends and colleagues of many years at ITER, Evgeny Velikhov and Masaji Yoshikawa,' Aymar said. 'It is above all a recognition of the effort of all those who have been involved with the ITER project and worked over the years to ensure the first step in proving that fusion will provide a new sustainable energy source for the plane...

  6. Robert Edwards: the path to IVF.

    Science.gov (United States)

    Johnson, Martin H

    2011-08-01

    The early influences on Robert Edwards’ approach to the scientific research that led to human IVF are described. His interest as a graduate student in the genetics of early mammalian development stimulated him later to investigate whether the origins of human genetic diseases such as Down, Klinefelter and Turner syndromes might be explained by events during egg maturation. This clinical problem provided the most powerful stimulus to achieve both oocyte maturation and fertilization in vitro in humans. Indeed,preimplantation genetic diagnosis was his main goal until he met Patrick Steptoe in 1968. A re-evaluation of his meeting with Steptoe suggests that initially Steptoe’s laparoscopic skill was of interest for its potential to solve the sperm capacitation problem. Steptoe’simpact on Edwards was twofold. First, Steptoe’s long-held interest in infertility raised this application of IVF higher in Edwards’priorities. Second, Steptoe offered a long-term partnership, in which oocyte collection without in-vitro maturation was a possibility.The professional criticism generated by their work together encouraged Edwards to pursue a deliberate programme of public education about the issues raised and to challenge and develop professional bioethical thought and discourse about reproduction.

  7. Robert Carswell: the first illustrator of MS.

    Science.gov (United States)

    Murray, T J

    2009-09-01

    The first illustration of multiple sclerosis (MS) was by a young Scottish physician and artist, Dr Robert Carswell. Recognized as a talented illustrator by his teachers, he was encouraged to create an anatomy and pathology atlas. He spent years in the hospitals and mortuaries of Paris and Lyon painting watercolours and pen and ink drawings of patients and post mortem preparations. Of the 1034 paintings, 99 are of the brain and spinal cord and Plate 4, figure 4.4 in the atlas (Figure 2), is of MS. Carswell indicated he saw two examples of this pathology, but had not examined either patient, but illustrated one of them. We know little about the clinical history other than that the patient was paralyzed. About 200 of the atlases were printed, and it is still regarded as one of the greatest and most beautiful of all medical books. Carswell was appointed as the first Professor of Anatomy at the North London Hospital, later renamed the University College Hospital UK, where the original copy of his great atlas is archived. Due to ill health he resigned after a few years to reside in the healthier air outside Brussels, Belgium. He was appointed physician to King Leopold, but was also noted for his care of the poor. Queen Victoria knighted him for his care of King Louis Philippe of France when he was in exile. Although English journals did not note his passing at the age of 64 years, his great atlas remains as his memorial.

  8. Magnetohydrodynamics and the earth's core selected works by Paul Roberts

    CERN Document Server

    Soward, Andrew M

    2003-01-01

    Paul Roberts'' research contributions are remarkable in their diversity, depth and international appeal. Papers from the Paul Roberts'' Anniversary meeting at the University of Exeter are presented in this volume. Topics include geomagnetism and dynamos, fluid mechanics and MHD, superfluidity, mixed phase regions, mean field electrodynamics and the Earth''s inner core. An incisive commentary of the papers puts the work of Paul Roberts into historical context. Magnetohydrodynamics and the Earth''s Core provides a valuable source of reference for graduates and researchers working in this area of geoscience.

  9. Experience and Universal Judgements: William Kingdon Clifford and Non-Euclidean Geometries Expérience et jugements universels : William Kingdon Clifford et les géométries non-euclidiennes

    Directory of Open Access Journals (Sweden)

    Christophe Duvey

    2009-05-01

    Full Text Available La pensée de W. K. Clifford se distingue par un questionnement radical de la valeur de la connaissance humaine. Fondée sur une doctrine exclusivement empiriste, elle n’adhère cependant pas pleinement aux conceptions de l’expérience alors défendues par des philosophes comme J. S. Mill ou H. Spencer. Récusant l’apriorisme kantien ainsi que toute proposition universelle et nécessaire, Clifford défend un relativisme, dont l’origine est fortement marquée par son étude des mathématiques, et notamment par son enthousiasme pour les géométries non-euclidiennes alors en plein essor. C’est précisément cet intérêt qui fait de ce mathématicien philosophe l’un des penseurs les plus originaux de la période victorienne.

  10. 76 FR 77579 - Maryland Disaster #MD-00017

    Science.gov (United States)

    2011-12-13

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Maryland Disaster MD-00017 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY... INFORMATION CONTACT: A. Escobar, Office of Disaster Assistance, U.S. Small Business Administration, 409...

  11. 78 FR 2707 - Maryland Disaster # MD-00026

    Science.gov (United States)

    2013-01-14

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Maryland Disaster MD-00026 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY... INFORMATION CONTACT: A. Escobar, Office of Disaster Assistance, U.S. Small Business Administration, 409...

  12. Hazardous Waste Minimization Assessment: Fort Meade, MD

    Science.gov (United States)

    1991-01-01

    Audit." in Wuem Mbdmi1zmim Mama (Govarmmu Inlmdu he.. Roeehdmf, MD. 19), pp 61-73 M.L R=. "Haudow Wons Mhbdms Aisu Usi4 a Two-Timed Appm." rw£nwwd...severe health problems (e.g.. gastric disorders, skin lesions. swollen limbs, cancers. tumors , eye problems. liver disorders, menstrual irregularities

  13. A unified description of particles, strings and branes in Clifford spaces and p-brane/polyparticle duality

    Science.gov (United States)

    Castro, Carlos

    2016-10-01

    It is described how the Extended Relativity Theory in C-spaces (Clifford spaces) allows a unified formulation of point particles, strings, membranes and p-branes, moving in ordinary target spacetime backgrounds, within the description of a single polyparticle moving in C-spaces. The degrees of freedom of the latter are provided by Clifford polyvector-valued coordinates (antisymmetric tensorial coordinates). A correspondence between the p-brane (p-loop) “Schrödinger-like” equations of Ansoldi-Aurilia-Spallucci and the polyparticle wave equation in C-spaces is found via the polyparticle/p-brane correspondence. This correspondence might provide another unexplored avenue to quantize p-branes (a notoriously difficult and unsolved problem) from the more straightforward quantization of the polyparticle in C-spaces, even in the presence of external interactions. We conclude with comments about the compositeness nature of the polyvector-valued coordinate operators in terms of ordinary p-brane coordinates via the evaluation of n-ary commutators.

  14. Scientific Literature as Hierarchy: Library Instruction and Robert M. Gagne.

    Science.gov (United States)

    Miller, Constance R.

    1982-01-01

    Establishes the connection between the learning theories of Robert M. Gagne and systematic patterns in scientific literature and discusses implications of this connection for instruction in library use. Twenty-four references are listed. (Author/EJS)

  15. TBT recommends : Vera Bila. The No Smoking Orchestra. Robert Plant

    Index Scriptorium Estoniae

    2005-01-01

    Mustlasansambli Kale ja Vera Bila kontserdist 8. apr Tallinnas. Bosnia filmirežissööri Emir Kusturica ja tema ansambli No Smoking Orchestra kontserdist 12. apr. Riias. Inglise rocklaulja Robert Planti kontserdist 10. apr. Vilniuses

  16. Research Ship Robert Gordon Sproul Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Robert Gordon Sproul Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and...

  17. Robert Rodrigueze verejugadega õudusfilm tuleb Igavuse planeedilt / Mihkel Raud

    Index Scriptorium Estoniae

    Raud, Mihkel, 1969-

    2007-01-01

    Filmiprojekt "Grindhouse" koosneb Robert Rodrigueze retroõudukast "Grindhouse : Õuduste planeet" ("Planet Terror") ja Quentin Tarantino 70-ndatest inspireeritud õudusfilmist "Surmakindel" ("Death Proof") : Ameerika Ühendriigid 2007. R. Rodrigueze filmist

  18. Sivapalan receives 2011 Robert E. Horton Medal: Response

    Science.gov (United States)

    Sivapalan, Murugesu

    2012-01-01

    Murugesu Sivapalan was awarded the 2011 Robert E. Horton Medal at the AGU Fall Meeting Honors Ceremony, held on 7 December 2011 in San Francisco, Calif. The medal is for "outstanding contributions to hydrology."

  19. Sivapalan receives 2011 Robert E. Horton Medal: Citation

    Science.gov (United States)

    Dunne, Thomas

    2012-01-01

    Murugesu Sivapalan was awarded the 2011 Robert E. Horton Medal at the AGU Fall Meeting Honors Ceremony, held on 7 December 2011 in San Francisco, Calif. The medal is for "outstanding contributions to hydrology."

  20. Astronaut Robert Gibson prepares to use motion picture camera

    Science.gov (United States)

    1986-01-01

    Astronaut Robert L. Gibson, STS 61-C mission commander, partially floats on the aft flight deck of the Shuttle Columbia while preparing to use a motion picture camera. The windows overlooking the cargo bay are visible in the background.

  1. Realismo e utopia em Robert Michels

    Directory of Open Access Journals (Sweden)

    Pedro Floriano Ribeiro

    2012-11-01

    Full Text Available O artigo aponta e discute as principais influências teóricas e políticas de Robert Michels na construção de Sociologia dos partidos políticos, tentando ir além das fontes mais conhecidas, como Gaetano Mosca, Vilfredo Pareto, Max Weber e Gustave Le Bon. Como Michels não se preocupou em construir definições claras sobre seus conceitos principais, procurou-se extrair a essência de seu raciocínio, apresentando as concepções e influências teóricas predominantes no livro, e destacando as mudanças entre a primeira edição, de 1911, e a segunda, de 1925. Para tanto, realizou-se um estudo das 989 notas explicativas desta segunda edição (além do texto principal em si. Além de discutir as fontes explicitadas no livro, o artigo também esboça uma "análise genética" da obra, levantando alguns fatos biográficos prévios à sua publicação e no intervalo entre as duas edições, e recorrendo, ainda, a outros trabalhos de Michels. Após debater as concepções e críticas do autor sobre democracia, revolução, socialismo, sindicalismo e anarquismo, o artigo termina com um balanço sobre as fragilidades e contribuições da obra de Michels, destacando que a chave para se compreender vida e obra do autor reside em perceber as tensas disjuntivas estabelecidas entre realismo e utopia e entre o Michels militante e o Michels analista.

  2. Caruso St John y Robert Smithson: Interferencias

    Directory of Open Access Journals (Sweden)

    Emilia Hernández Pezzi

    2016-05-01

    Full Text Available Resumen Los discursos cruzados son el soporte común del presente número de Cuadernos. El cruce que planteamos tiene como protagonistas al artista Robert Smithson y a los arquitectos Adam Caruso y Peter St John. Estos últimos hacen mención del trabajo del artista norteamericano para explicar su proyecto de remodelación de Stortorget, la plaza de la catedral en el centro de Kalmar, Suecia. A partir de aquí, comenzamos una exploración del trabajo y las preocupaciones de ambos que nos permite dibujar convergencias y sintonías procesuales por encima de las diferencias temáticas, ideológicas y estilísticas. Al disponer en paralelo la obra de Smithson y Caruso St John descubrimos vibraciones y resonancias que muestran una interacción productiva de sus preocupaciones. La materia se convierte en sus propuestas en un objeto activo y sensible, un depósito energético con el que operar. El traslado de piedras en Stortorget convoca la memoria de la ciudad del mismo modo que el basalto y la sal del Spiral Jetty, erosionados por el tiempo, nos hablan de procesos abiertos. El tiempo y la memoria pasan a ser soportes estratégicos con los que construyen sus miradas. Los objetos se disuelven en las relaciones que establecen con su entorno produciendo equilibrios frágiles e instantáneos. De esta manera el artículo pretende generar un vórtice de reflexión, una espiral en cuyo recorrido se manifiesten las tensiones parciales del cruce propuesto, sus fijezas momentáneas.

  3. Robert (Bob) L. Helmreich (1937-2012).

    Science.gov (United States)

    Wilhelm, John; Domjan, Michael

    2013-09-01

    Presents an obituary for Robert (Bob) L. Helmreich (1937-2012). Helmreich was born April 29, 1937, in Kansas City, Missouri, the only son of Ralph and Caroline Helmreich. Bob received his undergraduate degree from Yale University in 1959. He immediately enlisted in the U.S. Navy, where he served for four years. Upon his retirement from the service he was executive officer of the USS Decatur (DD-936). Perhaps it was his service in the Navy that sparked his lifelong professional interest in how people work together in teams to accomplish technically precise goals. He returned to Yale University to obtain a doctor of philosophy degree in social psychology under Barry Collins. Bob joined the faculty at The University of Texas at Austin as an assistant professor in 1966 and remained on the faculty in the Department of Psychology until his retirement in 2007, 41 years later. During the course of his career, Helmreich published more than 200 research articles and monographs. Most of his publications dealt with issues related to airline and medical safety, and much of this work was done in collaboration with graduate students and colleagues. In recognition of his extensive contributions to improving crew performance, in 2005 Helmreich received the Lifetime Achievement Award from the Flight Safety Foundation. Helmreich also received the Franklin V. Taylor Award for Outstanding Contributions in the Field of Applied Experimental/Engineering Psychology from the American Psychological Association (APA), the Pro Bene Meritus A ward from The University of Texas (for his commitment to the liberal arts), and the David S. Sheridan Award from Albany Medical College.

  4. Obituary: Robert Mowbray Walker, 1929-2004

    Science.gov (United States)

    Schoenherr, Neil T.

    2004-12-01

    Robert M. Walker, PhD, Professor of Physics in Arts & Sciences and a faculty fellow of the McDonnell Center for the Space Sciences, died of stomach cancer Thursday, 12 February 2004, in Brussels, Belgium. He was 75. Walker worked on the frontiers of space research for more than four decades. Robert Walker was born in Philadelphia on 6 February 1929. His mother was Dorothy Potter and he considered Roger Potter his father though he was not his biological father. His early years were spent in New York City and in upstate New York. He attended the Bronx High School of Science, earned his BS in physics from Union College and in 1954, he received his PhD in particle physics from Yale University. He subsequently joined the General Electric Laboratory in Schenectady, New York where he studied the radiation effects in solids. His work on defects in irradiated copper is still regarded as the definitive work on the topic. In the early 1960s, Walker's discovery of fossil nuclear particle tracks in minerals was instrumental to new developments in geo-chronology and cosmic ray physics. In particular, his discovery of tracks from nuclei heavier than iron opened a new frontier of cosmic ray physics. He subsequently pioneered the use of plastics to detect and count such nuclei in cosmic ray balloon flights. Beginning in 1966, when he moved to Washington University and became the first McDonnell Professor of Physics, his research interests turned more toward space physics. He was the inaugural director of the McDonnell Center, which was established in 1975 by a gift from aerospace pioneer James S. McDonnell. Walker was a member of the NASA committee that allocated samples of the first returned lunar materials, and his laboratory led the way in deciphering their record of lunar, solar system and galactic evolution. Together with Ghislaine Crozaz and other colleagues, Walker made path breaking laboratory studies of the first moon rocks revealing the history of solar radiation and

  5. Aristoteles, Augustin og Robert Grosseteste om videnskabens grundprincipper

    DEFF Research Database (Denmark)

    Bloch, David Kristian

    2009-01-01

    Artiklen undersøger tre filosoffers (Aristoteles', Augustins og Robert Grossetestes) syn på videnskabens grundprincipper. Der argumenteres for, at de modstridende teorier, som Aristoteles og Augustin fremsætter, forenes i Grossetestes teori.......Artiklen undersøger tre filosoffers (Aristoteles', Augustins og Robert Grossetestes) syn på videnskabens grundprincipper. Der argumenteres for, at de modstridende teorier, som Aristoteles og Augustin fremsætter, forenes i Grossetestes teori....

  6. Leaving Libertarianism: : Social Ties in Robert Nozick's New Philosophy

    OpenAIRE

    Herbjørnsrud, Dag

    2002-01-01

    SUMMARY This thesis Leaving Libertarianism: Social Ties in Robert Nozick s New Philosophy challenges the general and most widespread portrayals of the American philosopher Robert Nozick (1938-2002) by studying the notion of social ties in his later philosophy. The point of departure is the present descriptions of Nozick s philosophy. Mostly these depictions are based upon three postulates: That Nozick is an extreme individualist, that the libertarian Anarchy, State, and Utopia (1...

  7. A New Paradigm for British Airpower

    Science.gov (United States)

    2012-06-01

    1 Robert Gilpin , War and Change in World Politics (Cambridge, UK: Cambridge University Press, 1981), 31. 24 - These themes will mean that...maintain its prestige. Gaining and maintenance of prestige are vitally important to any state. Gilpin describes prestige as “involving the...Clifford, Progress and Purpose, 58-59. 8 Robert Sherrod, History of Marine Corps Aviation in World War II, (Baltimore, MD: Nautical & Aviation Pub

  8. Direct NOE simulation from long MD trajectories

    Science.gov (United States)

    Chalmers, G.; Glushka, J. N.; Foley, B. L.; Woods, R. J.; Prestegard, J. H.

    2016-04-01

    A software package, MD2NOE, is presented which calculates Nuclear Overhauser Effect (NOE) build-up curves directly from molecular dynamics (MD) trajectories. It differs from traditional approaches in that it calculates correlation functions directly from the trajectory instead of extracting inverse sixth power distance terms as an intermediate step in calculating NOEs. This is particularly important for molecules that sample conformational states on a timescale similar to molecular reorientation. The package is tested on sucrose and results are shown to differ in small but significant ways from those calculated using an inverse sixth power assumption. Results are also compared to experiment and found to be in reasonable agreement despite an expected underestimation of water viscosity by the water model selected.

  9. MD5的Keygenme分析

    Institute of Scientific and Technical Information of China (English)

    Firebig

    2006-01-01

    闲来无事,抓出个不知何时下的Keygenme练练手,分析后可知.这个Keygenme有2张数据表,由注册名经MD5运算后进行查表,得出2个DWORD数据.然后再由注册码经过一个可逆循环得出2个DWORD数据.最后对比是否正确。(MD5的具体介绍黑防6期有说明)

  10. Batch By Batch Longitudinal Emittance Blowup MD

    CERN Document Server

    Mastoridis, T; Butterworth, A; Jaussi, M; Molendijk, J

    2012-01-01

    The transverse bunch emittance increases significantly at 450 GeV from the time of injection till the ramp due to IBS. By selectively blowing up the longitudinal emittance of the incoming batch at each injection, it should be possible to reduce the transverse emittance growth rates due to IBS. An MD was conducted on April 22nd 2012 to test the feasibility and performance of the batch-by-batch longitudinal emittance blowup. There were three main goals during the MD. First, to test the developed hardware, firmware, and software for the batch-by-batch blowup. Then, to measure the transverse emittance growth rates of blown-up and "witness" batches to quantify any improvement, and finally to test the ALLInjectSequencer class, which deals with the complicated gymnastics of introducing or masking the new batch to various RF loops.

  11. MD on UFOs at MKIs and MKQs

    CERN Document Server

    Baer, T; Bartmann, W; Bracco, C; Carlier, E; Dehning, B; Garrel, N; Goddard, B; Jackson, S; Jimenez, M; Kain, V; Mertens, V; Misiowiec, M; Nordt, A; Papotti, G; Uythoven, J; Wenninger, J; Zerlauth, M; Zamantzas, C; Zimmermann, F

    2012-01-01

    UFOs ("Unidentified Falling Objects") are expected to be one of the major known performance limitation of the LHC. In this MD, the production mechanism and the dynamics of UFOs at the injection kicker magnets (MKIs) and the tune kicker magnets (MKQs) were studied. This was done by pulsing the MKIs and MKQs on a gap in the partly filled machine. During the MD, in total 58 UFO-type beam loss patterns were observed directly after pulsing the MKIs. None were observed after pulsing the MKQs, which provides important input for possible mitigation strategies. The temporal and spatial distribution of the UFO events could be determined by using a dedicated BLM Study Buffer, the implications for the UFO dynamics are discussed.

  12. 34 CFR 654.1 - What is the Robert C. Byrd Honors Scholarship Program?

    Science.gov (United States)

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false What is the Robert C. Byrd Honors Scholarship Program...) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION ROBERT C. BYRD HONORS SCHOLARSHIP PROGRAM General § 654.1 What is the Robert C. Byrd Honors Scholarship Program? Under the Robert C. Byrd...

  13. Robert Lowell’s Culturally Coded Lexis

    Directory of Open Access Journals (Sweden)

    Lidija Davidovska

    2014-12-01

    Full Text Available In this paper, I will examine how a vital ele­ment of Robert Lowell’s descriptive and narrative struc­tures, i.e., the lexis, promise to unfold the “layers” of the culture that served as context for Life Studies. This in­volves exploring both the denotations and connotations of his culturally encoded lexis, that is, the external mean­ings of certain words and phrases before they “en­ter” the poem and the internal meanings they acquire after entering the poem. This process of “verbal osmo­sis”, when words absorb meaning from these different contexts, is, what I believe, critic and linguist Winifred Nowottny describes as “give and take between those patterns” (Fowler, 2009: 31. My analysis will focus on the sociolinguistic patina accrued on certain units of Lowell’s poetic lexis, such as names of historical people, events and concepts belonging to American and Euro­pean spiritual cultures and traditions, as well as brand names from popular material culture of the first half of the twentieth century. The analysis will also dwell on the use of idioms, catch phrases and other verbal clichés which reflect the culture that generated them. They func­tion as verbal “ready-mades” that additionally rein­force Lowell’s well-known anecdotal, colloquial and infor­mal poetic language. The choice of these particular lexical items is significant as they reflect the categoriza­tion of the world and the experience of the poetic voice or the “language user” in broader linguistic terms. At the same time, the categorization of the experience reflects the ideational position, the worldview of the language user. In the context of his poetics of immanence and experi­ence, this culturally coded poetic diction is ana­lyzed as another authentic and documented presenta­tion of immanent narrator’s “lived experience”.

  14. Classical MD calculations with parallel computers

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, Mitsuhiro [Nagoya Univ. (Japan)

    1998-03-01

    We have developed parallel computation codes for a classical molecular dynamics (MD) method. In order to use them on work station clusters as well as parallel super computers, we use MPI (message passing interface) library for distributed-memory type computers. Two algorithms are compared: (1) particle parallelism technique: easy to install, effective for rather small number of processors. (2) region parallelism technique: take some time to install, effective even for many nodes. (J.P.N.)

  15. American Prometheus. The Triumph and Tragedy of J. Robert Oppenheimer. Biography; J. Robert Oppenheimer. Die Biographie

    Energy Technology Data Exchange (ETDEWEB)

    Bird, Kai; Sherwin, Martin J.

    2009-07-01

    A definitive portrait of legendary scientist J. Robert Oppenheimer, the ''father'' of the atomic bomb, discusses his seminal role in the twentieth-century scientific world, as well as his lesser-known roles as family man, supposed communist, and head of Princeton's Institute for Advanced Studies. ''American Prometheus'' is a rich evocation of America in mid-century and a compelling portrait of scientist J. Robert Oppenheimer, a man shaped by its major events--the Depression, World War II, and the Cold War. (orig.) [German] J. Robert Oppenheimer (1904-1967), der ''Vater der Atombombe'', zaehlt zu den schillerndsten Figuren der juengeren Zeitgeschichte. Fuer ihre glaenzende Biographie des ''amerikanischen Prometheus'' erhielten der Journalist Kai Bird und der Historiker Martin J. Sherwin den Pulitzer-Preis. Exemplarisch lassen sie das Drama eines Forschers lebendig werden, der sich zwischen Erkenntnisdrang und ethischer Verantwortung entscheiden muss. Oppenheimer leitete das streng geheime Manhattan-Projekt in der Wueste von New Mexico, wo am 16. Juli 1945 die erste Atombombe gezuendet wurde. Kurz darauf starben in Hiroshima und Nagasaki mehr als 200 000 Menschen durch die neue ''Wunderwaffe'' - die Menschheit war ins Atomzeitalter eingetreten. Erschuettert von der Zerstoerungskraft seiner Schoepfung, engagierte sich Oppenheimer fortan gegen den Einsatz nuklearer Waffen. Das machte ihn im Amerika der McCarthy-Aera verdaechtig. Er geriet ins Visier des FBI, wurde als Spion der Sowjetunion verleumdet und musste den Staatsdienst quittieren. Sein Privatleben wurde an die Oeffentlichkeit gezerrt, seine Wohnung verwanzt, sein Telefon abgehoert. Erst 1963 rehabilitierte ihn Praesident Kennedy. Ueber dreissig Jahre hinweg haben die Autoren Interviews mit Oppenheimers Angehoerigen, Freunden und Kollegen gefuehrt, FBI-Akten gesichtet, Tonbaender von Reden und Verhoeren

  16. Zur Erinnerung an Gustav Robert Kirchhoff / Aufsätze von Robert v Helmholtz, August W. v. Hofmann, Friedrich Pockels und Emil Warburg zusammengestellt von Gabriele Dörflinger

    OpenAIRE

    Helmholtz, Robert von; Hofmann, August Wilhelm von; Pockels, Friedrich; Warburg, Emil

    2014-01-01

    Gustav Robert Kirchhoff (1824-1887) lehrte von 1854 bis 1875 als Physikprofessor an der Heidelberger Universität. Hier entdeckte er 1859/60 gemeinsam mit Robert Wilhelm Bunsen die Spektralanalyse. Die Aufsatzsammlung enthält: 1.) Robert von Helmholtz: Gustav Robert Kirchhoff 2.) August W. Hofmann: Gedächtnisrede auf Gustav Robert Kirchhoff 3.) Friedrich Pockels: Gustav Robert Kirchhoff 4.) Emil Warburg: Zur Erinnerung an Gustav Robert Kirchhoff

  17. Obituary: Robert C. Bless (1927 - 2015)

    Science.gov (United States)

    Surrounded by his loving family, Robert Charles Bless died at home on November 29th, three days before his 88th birthday. He was born in Ithaca, NY on Dec. 3, 1927 to a Russian father, Arthur Aaron Bless, and a French mother, Eva Chantrell Bless. Bob spent many summers on the family farm in the South of France, where he gained a great pride and joy in his French heritage, large extended family, and mother tongue. As a child growing up in Gainesville, FL, Bob's first job was snake wrangling, earning 10 cents per foot, with an added bonus for the more venomous species. Young Robbie took daily adventures in the Florida woods and swamps, armed only with pockets full of pecans and oranges. He enjoyed spending time at the family's lake cabin, where he learned to sail and helped his father plant acres of trees to grow their timber plantation. As a first generation immigrant, Bob's father received a PhD in physics, which inspired Bob to pursue an extensive educational route in astrophysics. Bob excelled in academics, graduating high school at the age of 16 and the University of Florida (B.Sc.) at 19. His path to graduate school was interrupted by a diagnosis of tuberculosis that forced him into a Florida sanitorium for one year. During this time, Bob made the most of what he described as the most dismal part of life by advocating for patient rights, initiating an inter-sanitorium newsletter, and gaining skills and experience in community organization and leadership - qualities that would later inform his leadership in academe. After being one of the first successfully treated tuberculosis patients in the US, Bob went on to earn a M.Sc. from Cornell University, and received his PhD degree in Astronomy from the University of Michigan in 1958. That same year, Bob joined the staff of the Astronomy Department of the University of Wisconsin (UW), Madison. It was there that Bob met Diane McQueen. Despite Bob's Dodge Dart and what has been described as the worst first date in

  18. ["The piano trio" Robert Schumann, Clara Schumann and Johannes Brahms].

    Science.gov (United States)

    Albretsen, C S

    1998-12-10

    The relationship between the pianist and composer Clara Schumann and the composers Robert Schumann and Johannes Brahms has for a century been an interesting topic. Clara and Robert Schumann both suffered separation from their mothers during early childhood. Johannes Brahms was intensely spoiled by his mother. Robert Schumann needed a structuring wife in his adult life, while Johannes Brahms turned to be afraid of intrusive women. Robert Schumann's psychotic breakdown in February 1854 had a complex background: a hypomanic state, some marital problems, a stressful journey with musical appearances, and possibly a difficulty in differentiating between himself and his new friend Johannes Brahms. As for Clara Schumann, who lost her mother before the age of five, musical activities became her way of overcoming the difficulties of life. She was able to support Robert in his lunatic asylum and their seven children growing up in three separate towns. The chronic diseases of the sons: schizophrenia, polyarthritis and tuberculosis made a deep impression on her and her fingers and hands were periodically immobilised with severe pain. For four decades Johannes was her able "son" and Clara was his "mother", at a safe distance.

  19. Mapa denso de disparidade para imagem estereoscópica no domínio de Clifford

    OpenAIRE

    Pasquali, André Luiz; Romero Romero,Milton Ernesto; Mazina Martins,Evandro

    2013-01-01

    Extensões do Quad-tree para a estimação do mapa denso de disparidade utilizando a luminância no domínio real foram propostas na literatura. A contribuição deste trabalho é a comparação do processamento de imagens estéreo entre o algoritmo que é uma extensão do Quad-tree para processar imagens no domínio real utilizando a luminância, com o algoritmo, aqui proposto, que é a extensão do Quad-tree para processar imagens codificadas no domínio da álgebra de Clifford utilizando imagens coloridas do...

  20. Handlung, Text, Kultur. Überlegungen zur hermeneutischen Anthropologie zwischen Clifford Geertz und Paul Ricœur

    Directory of Open Access Journals (Sweden)

    Thiemo Breyer

    2013-06-01

    Full Text Available The paper investigates the phenomenon of foreignness and its understanding in ethnographic and philosophical context. The role of a phenomenologicalhermeneutic conception of text and action in bridging the gap between the native’s and the observer’s points of view with respect to the description of cultural phenomena is elucidated by way of comparing the theories of anthropologist Clifford Geertz and philosopher Paul Ricoeur. Hidden links between the two authors, who make sparse references to one another, but should be connected more thoroughly, are followed. The methods of “thick description” (Geertz and of taking the “text as a model” (Ricoeur for understanding social and cultural performances are analysed to attain a new notion of culture as context.

  1. Cultura e Sociedade Internacional: uma conjunção possível entre Clifford Geertz e Hedley Bull

    Directory of Open Access Journals (Sweden)

    Hugo Arend

    2005-02-01

    Full Text Available Este artigo objetiva a aproximação dos estudos de Hedley Bull e de Clifford Geertz no que respeita o lugar e a dimensão da cultura em seus pensamentos. Considero, primeiramente, o lugar da cultura no pensamento de Bull, para, logo após, apontar quais de seus traços podemser enriquecidos pelos estudos de Geertz, e, a partir daí, problematizar e dimensionar o lugar da cultura para o estudo das relações internacionais, tomando como foco o conceito de intersubjetividade, latente em ambos os teóricos. Ao final, realizo um estudo de caso, interpretando a forma como foram estruturados os discursos de George W. Bush, Tony Blair e José Maria Aznar para dar legitimidade à invasão do Iraque, a 16 de março de 2003.

  2. Face Detection Based on Adaboost and Clifford Algebra%基于Adaboost与Clifford代数的人脸检测

    Institute of Scientific and Technical Information of China (English)

    杨晋吉; 李荣兵

    2013-01-01

    In the conditions of complicated backgrounds and different illumination, as face detection based on Adaboost algorithm usually has higher false alarm rate, a new method based on the Adaboost algorithm and the Clifford vector product is proposed in this paper. Most of the non-face region is quickly excluded by the Adaboost classifier. The candidate region is verified basing on the face prior knowledge. If verification failure, according to Clifford vector product properties, searching for the region which has higher similarity with the region that need to be verified again, when their vector product is higher than threshold, this paper can judge that it is a face region. The comparison of this method with Viola-Jones method, experimental result shows that this method can detect face with high detection rate, suppresses the error detection rate, and is highly robust to face detection.%Adaboost算法在光照不均、背景复杂的条件下进行人脸检测时误检率较高。为解决该问题,提出一种基于Adaboost算法与Clifford代数矢量积性质的人脸检测方法。利用Adaboost算法初步定位人脸可能存在的区域,对该区域进行基于知识的校验,如果校验失败,根据Clifford矢量积性质,寻找与待验证区域相似度较高的人脸,当相似度大于阈值时,判断其为人脸。实验结果表明,与Viola-Jones方法相比,该方法在保持较高检测率的同时,降低了误检率,且鲁棒性较好。

  3. Integrative Medicine Program- MD Anderson Cancer Center

    Directory of Open Access Journals (Sweden)

    Richard T Lee

    2012-06-01

    Full Text Available The Integrative Medicine Program at MD Anderson Cancer Center was first established in 1998.  Our mission is to empower patients with cancer and their families to become active partners in their own physical, psycho-spiritual, and social health through personalized education and evidenced-based clinical care to optimize health, quality of life, and clinical outcomes across the cancer continuum.  The program consists of three main components: clinical care, research, and education.  The Integrative Medicine Center provides clinical services to patients through individual and group programs.  The clinical philosophy of the center is to work collaboratively with the oncology teams to build comprehensive and integrative care plans that are personalized, evidence-based, and safe with the goal of improving clinical outcomes.  The individual services comprise of integrative oncology consultation, acupuncture, meditation, music therapy, nutrition, and oncology massage.  The center also provides a variety of group programs including meditation, yoga, tai chi, cooking classes and others.  Over the past 13 years, over 70,000 patients and families have participated in services and programs offered by the center.  The research portfolio focuses on three main areas: mind-body interventions, acupuncture, and meditation.  This lecture will focus on providing an overview of the Integrative Medicine Program at MD Anderson with a focus on the clinical services provided.  Participants will learn about the integrative clinical model and how this is applied to the care of cancer patients at MD Anderson Cancer Center.  Current and future research topics will be discussed as well as patient cases.

  4. John Bowlby and ethology: an annotated interview with Robert Hinde.

    Science.gov (United States)

    Bowlby, John

    2007-12-01

    From the 1950s, John Bowlby, one of the founders of attachment theory, was in personal and scientific contact with leading European scientists in the field of ethology (e.g., Niko Tinbergen, Konrad Lorenz, and especially Robert Hinde). In constructing his new theory on the nature of the bond between children and their caregivers, Bowlby profited highly from their new approach to (animal) behavior. Hinde and Tinbergen in their turn were influenced and inspired by Bowlby's new thinking. On the basis of extensive interviews with bowlby's colleague and lifelong friend Robert Hinde and on the basis of archival materials, both the relationship between John Bowlby and Robert Hinde and the cross-fertilization of ethology and attachment theory are described.

  5. Orlando C. Kirton, MD, FACS, FCCM, FCCP.

    Science.gov (United States)

    Pyrtek, Ludwig J

    2007-12-01

    The chair is named for Ludwig J. Pyrtek, MD, an esteemed surgeon at Hartford Hospital, who was devoted to the care of his patients and was an outstanding educator within his chosen field. A unique aspect of the chair is that its income is not used to support the salary of the director but is used to enhance the education activities of the department, such as the purchasing of state-of-the-art teaching devices, support of surgical resident research activities, educational travel for residents and honoraria for nationally/internationally known clinicians/scientists to speak at grand rounds.

  6. Obituary: Peter Robert Wilson, 1929-2007

    Science.gov (United States)

    Snodgrass, Herschel B.

    2009-01-01

    It is with great sadness that I report the passing of Peter Robert Wilson, a well-known and well-loved figure in the solar physics community. Peter was on the faculty of the Department of Applied Mathematics at the University of Sydney for 39 years, and Chair of the department for 24 of these years. He was the author or co-author of more than 80 scientific research papers and a book, Solar and Stellar Activity Cycles (1994), published by Cambridge University Press. He died suddenly of a heart attack, at his home in Glebe, Australia, in the early morning of 11 November 2007. Peter was an organizer of, and participant in, many international conferences and workshops. He traveled extensively, holding visiting appointments at the University of Colorado (JILA), at Cambridge University, at the College de France (Paris), and at the California Institute of Technology [CalTech]. Most of his work was in the field of solar physics, but he also did some work on the philosophy of science and on tides. Peter came from a line of mathematicians. His father, Robert Wilson, immigrated to Australia from Glasgow in 1911, and became a mathematics teacher at Scotch College, a private school in Melbourne. There his name was changed to 'Bill' because 'Bob' was already taken." Peter's enjoyment of this story as characteristic of Australian academia (as any fan of Monty Python would understand) is indicative of his infectious sense of humor. In a similar vein, he claimed ancestry traced back to the eighteenth-century Scottish mathematician Alexander Wilson, Professor of Astronomy at the University of Glasgow. That Wilson is famous in the solar physics community for his discovery, known as the "Wilson Effect," of the photospheric depressions associated with sunspots. Peter himself could not resist writing a paper on this subject, and was delighted when the bait was taken by some less-informed colleagues who chided him for "naming an effect after himself." "Bill" Wilson married Naomi

  7. ProtoMD: A prototyping toolkit for multiscale molecular dynamics

    Science.gov (United States)

    Somogyi, Endre; Mansour, Andrew Abi; Ortoleva, Peter J.

    2016-05-01

    ProtoMD is a toolkit that facilitates the development of algorithms for multiscale molecular dynamics (MD) simulations. It is designed for multiscale methods which capture the dynamic transfer of information across multiple spatial scales, such as the atomic to the mesoscopic scale, via coevolving microscopic and coarse-grained (CG) variables. ProtoMD can be also be used to calibrate parameters needed in traditional CG-MD methods. The toolkit integrates 'GROMACS wrapper' to initiate MD simulations, and 'MDAnalysis' to analyze and manipulate trajectory files. It facilitates experimentation with a spectrum of coarse-grained variables, prototyping rare events (such as chemical reactions), or simulating nanocharacterization experiments such as terahertz spectroscopy, AFM, nanopore, and time-of-flight mass spectroscopy. ProtoMD is written in python and is freely available under the GNU General Public License from github.com/CTCNano/proto_md.

  8. Double trisomy (48,XXX,+18) with features of Roberts syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Descartes, M.; Longshore, J.W.; Crawford, E. [Univ. of Alabama, Birmingham, AL (United States)] [and others

    1994-09-01

    We report an infant with double trisomy 48,XXX,+18, who also displayed features of Roberts syndrome. All previously published cases with similar double trisomy have presented with features of trisomy 18 syndrome. The chromosome analysis done at birth revealed the double trisomy; parental chromosomes were normal. The proband presented with microbrachycephaly, unilateral cleft lip and palate, choanal atresia, midfacial capillary hemanioma, thin nares, shallow orbits, malformed ears, sparse hair, hypomelia of the upper limbs, rocker-bottom feet, auricular septal defect and agenesis of the corpus callosum. Characteristic features of Roberts syndrome included hypomelia, midfacial defects, and severe growth deficiency. Among the many different features reported in the literature for patients with trisomy 18 syndrome, the most consistent were growth deficiency, clenched fingers and congenital heart defects (e.g. VSD, ASD, PDA). Although some of our patient`s features such as cleft lip and cleft palate, low-set malformed ears, ASD, defects of the corpus callosum, choanal atresia, radial aplasia could also be seen in trisomy 18 syndrome (in 10-50% of the cases), her phenotype was more typical of Roberts syndrome because of symmetrical hypomelia and midfacial defects. Our patient`s chromosomes did not show premature separation of centromeric heterochromatin, a feature reported to occur in approximately one-half of individuals with Roberts syndrome. Sporadic aneuploidy involving different chromosomes has been found in lymphocyte cultures from some Roberts syndrome patients and is considered by some authors as a mitotic mutant. This aneuploidy is most likely to be chromosome gain. The simultaneous occurrence of trisomy X and 18 is extremely rare with only 11 cases having been reported in the literature. Our patient is unique since she has the double trisomy in addition to the characteristic features of Roberts syndrome.

  9. Robert Grosseteste's Conclusiones and the Commentary on the Posterior Analytics

    DEFF Research Database (Denmark)

    Bloch, David Kristian

    2009-01-01

    En undersøgelse af Robert Grossetestes kommentar til Aristoteles' Den anden analytik. Især fokuseres på kommentarens fremgangsmåde og virkemidler, som synes at være en kompliceret syntese af 12. årh.s tanker om emnet.......En undersøgelse af Robert Grossetestes kommentar til Aristoteles' Den anden analytik. Især fokuseres på kommentarens fremgangsmåde og virkemidler, som synes at være en kompliceret syntese af 12. årh.s tanker om emnet....

  10. Obituary: Robert Fleischer, 1918-2001

    Science.gov (United States)

    Boyce, Peter Bradford; Saffell, Mary E.

    2003-12-01

    Robert Fleischer was born 20 August 1918 to Leon and Rose Fleischer in Flushing, NY. He was educated at Harvard, receiving his BS in 1940, MA in 1947, and PhD in 1949. He specialized in geophysics and solar-terrestrial relations. Fleischer joined the faculty at Rensselaer Polytechnic Institute advancing from Assistant to Full professor in 1958. As Director of the RPI Observatory, Fleischer attempted to bring modern astronomy to the institutions in the Albany area by procuring the funds to build a radio telescope. He left for the National Science Foundation (NSF) before the observatory was completed. It is a testament to his character that without his enormous energy, organizational, and fundraising abilities, the radio telescope project languished after he left. Fleischer joined the NSF in 1962 as the Program Director for Solar-Terrestrial Research. He was the government-wide Coordinator for the International Quiet Sun Years, and coordinated the 1966 South American Eclipse expeditions. Thereafter, he was appointed Deputy Head of the Office of International Science Activities. Fleischer is most notably remembered as the head of the Astronomy Section at the National Science Foundation. He brought astronomy into its own at NSF and involved the community in a major way through use of advisory committees. He was dedicated to helping the astronomical community understand the funding system, the political environment, and the various factors in how money is allocated. Fleischer truly believed in the concept that scientists should be making the important decisions about their field. He was instrumental in injecting science into the oversight of the National Observatories. Relations with the community say a lot about the man, the complexities of his character, and the forces that drove him. Fleischer was passionate in his beliefs and in his devotion to doing the best for astronomy. His strong approach and belief in himself served him well in many ways, but caused him grief

  11. Similarities Between The book of Songs and Robert Burns’ Poetry

    Institute of Scientific and Technical Information of China (English)

    Zhou; Juntao; Sun; Gengmei

    2014-01-01

    As the first general collection of poems in China,The Book of Songs resembles the poems composed by the late18th-century Scottish poet Robert Burns.From a new perspective,this paper explores the similarities between them.

  12. The Inharmonious Conflicts in Robert Frost’s Poetry

    Institute of Scientific and Technical Information of China (English)

    杨苗

    2015-01-01

    Robert Frost is one of the most distinguished poets,most of his poems are about the inharmonious relationship between nature and men,Conflicts are like a "thread" appearing in his poems.Frost’s true philosophy on men and life contributes to his wisdom and artistic poems.Frost tries to illustrate the conflict between nature and men in philosophy concern.

  13. Stylistic Analysis of Robert Browning's Poem "Patriot into Traitor

    Science.gov (United States)

    Ahmed, Mumtaz; Irshad, Ayesha

    2015-01-01

    The stylistic analysis of Robert Browning's poem "Patriot into Traitor" is done by using graphological, phonological, morphological and lexico-syntactic patterns. This analysis is helpful in decoding the underlying meanings of the poem. It clearly brings to surface what the poet really wants to impart.

  14. Robert Michels (1876-1936), Political Sociologist and Economist.

    Science.gov (United States)

    Parker, Franklin

    A biographical sketch of Robert Michels (1876-1936), a political sociologist and economist who taught in Germany, Switzerland, Italy, and the United States is presented. In his best known work, "Political Parties: A Sociological Study of Oligarchical Tendencies of Modern Democracy," he put forth his "iron law of oligarchy"…

  15. Stylistic Analysis of the Road Not Taken by Robert Frost

    Institute of Scientific and Technical Information of China (English)

    蒋庆

    2014-01-01

    The Road Not Taken is one of the famous poems created by Robert Frost, a celebrated poet in American modern literature. With the reference to the stylistic theory, the author of this paper will analyze respectively the sound patterning, grapheme, lexicon, syntax of the poem.

  16. Robert Grosseteste's thought on Light and Form of the World

    CERN Document Server

    Sparavigna, Amelia Carolina

    2014-01-01

    Robert Grosseteste was one of the most prominent thinkers of the Thirteenth Century. Philosopher and scientist, he proposed a metaphysics based on the propagation of light. In this framework, he gave a cosmology too. Here we will discuss the treatise where Grosseteste proposed it, that entitled 'De luce, seu de incohatione formarum', 'On Light and the Beginning of Forms'.

  17. Conceptualising Childhood: Robert Louis Stevenson's "A Child's Garden of Verses."

    Science.gov (United States)

    Webb, Jean

    2002-01-01

    Discusses the construct of childhood in Robert Louis Stevenson's collection of poems, "A Child's Garden of Verses," by employing notions of child development drawn from Jean Piaget and Lev Vygotsky. Finds, from a literary perspective, Stevenson's collection located on the boundaries of romanticism and modernism. (BT)

  18. The Improbable Adventures of an American Scholar: Robert K. Merton.

    Science.gov (United States)

    Schultz, Ruth W.

    1995-01-01

    Presents an affectionate portrait of the 84-year-old sociologist and renaissance man, Robert K. Merton. Merton's publications studied topics as diverse as historical scientific inquiry and contemporary racism. Not the least of his accomplishments was the creation of the focus group interview and the concept of self-fulfilling prophecy. (MJP)

  19. Commentary of Wind and Window Flower by Robert Frost

    Institute of Scientific and Technical Information of China (English)

    张磊

    2011-01-01

    Wind and Window Flower is a special metaphorical love poem by Robert Frost. This tale of love actually presents a love journey of temptation, excitement, and disappointment. This paper tries to analysis the poem from the perspective of the sound of the poetry, the metro and rhyme, the conceptual and rhetorical.

  20. Robert De Niro esitles Cannes'is uut filmi

    Index Scriptorium Estoniae

    2008-01-01

    Pühapäeval esitleti väljaspool võistlusprogrammi USA režissööri Barry Levinsoni filmi Robert De Niroga peaosas "What Just Happened". Mõlemad andsid ka pressikonverentsi. Vaatenurga preemia sai Kasahstani režissöör Sergei Dvortsevoi filmi "Tulp" ("Tjulpan") eest

  1. Paul Robert Wendt: Programmed Instruction and Visual Literacy Pioneer.

    Science.gov (United States)

    Moore, David M.; Bedient, Douglas

    2000-01-01

    Provides a profile of Paul Robert Wendt who was interested in using technology to teach students how to succeed in higher education by improving library and information skills. Highlights include his educational background; work in films; teaching in higher education at Southern Illinois University (SIU); work in programmed instruction and visual…

  2. Encounter with death: The thought of Robert Jay Lifton.

    Science.gov (United States)

    Lageman, A G

    1987-12-01

    Robert Jay Lifton begins his work in the psychosocial framework that he takes over from Erik Erikson. Lifton's thought is based upon a central paradigm-"death and the continuity of life." Lifton makes important contributions with his five modes of symbolic immortality and with his investigation of the psychological themes in survivors. The origins and limits of Lifton's thought are critically examined.

  3. Zombilood / Robert Kirkman ; intervjueerinud Margit Tõnson, Peeter Helme

    Index Scriptorium Estoniae

    Kirkman, Robert

    2010-01-01

    Režissöör George A. Romero kultusfilmid zombidest "Elavate surnute öö", "Surnute koidik", "Surnute päev" jpt. on inspiratsiooniks koomiksikirjutaja Robert Kirklandile. Režissöör Frank Darabont on teinud tema tuntuimast koomiksiseeriast "The Walking Dead" teleseriaali "Kõndivad surnud". Zombiteema kasvavast populaarsusest ning intervjuu koomiksikirjutajaga

  4. Pealesunnitud võlgnevustunne paneb ostma / Robert B. Cialdini

    Index Scriptorium Estoniae

    Cialdini, Robert B.

    2005-01-01

    Autor analüüsib, miks inimene ostab seda, mida ta tegelikult ei vaja. Mõjustamistehnikad ja nõuanded, kuidas tulla toime manipuleerijatega. Katkendeid Robert B. Cialdini raamatust "Mõjustamise psühholoogia. Teooria ja praktika". Vt. samas: Vastupandamatu boss

  5. Robert Bostrom's Contribution to Listening in Organizational Contexts

    Science.gov (United States)

    Brownell, Judi

    2013-01-01

    Robert Bostrom has not only left a listening legacy, but he was also a pioneer in the larger discipline of communication. Bostrom was one of the first scholars to focus on the dynamics of interpersonal contexts, thereby directly contributing to the transition of our field from "speech" to "communication." Early on he recognized the importance of…

  6. Wikinews interviews World Wide Web co-inventor Robert Cailliau

    CERN Multimedia

    2007-01-01

    "The name Robert Caillau may not ring a bell to the general pbulic, but his invention is the reason why you are reading this: Dr. Cailliau together with his colleague Sir Tim Berners-Lee invented the World Wide Web, making the internet accessible so it could grow from an academic tool to a mass communication medium." (9 pages)

  7. Education and Utopia: Robert Owen and Charles Fourier

    Science.gov (United States)

    Leopold, David

    2011-01-01

    The aims of education, and the appropriate means of realising them, are a recurring preoccupation of utopian authors. The utopian socialists Robert Owen (1771-1858) and Charles Fourier (1772-1837) both place human nature at the core of their educational views, and both see education as central to their wider objective of social and political…

  8. Halo Scraping, Diffusion and Repopulation MD

    CERN Document Server

    Valentino, G; Bruce, R; Burkart, F; Redaelli, F; Salvachua, B; Previtali, V; Stancari, G; Valishev, A

    2012-01-01

    Beam halo measurements in the LHC were conducted through collimator scrapings in an MD carried out on the 22nd June 2012 for the first time at 4 TeV. The time evolution of losses during a collimator scan provides information on halo diffusion and population. Four scans were performed with two collimators in the vertical and horizontal plane in B1 and B2 respectively, before and after bringing the beams into collisions. During an inward step, the beam losses measured at the BLMs for the first 3 seconds are believed to be dominated by multi-turn halo removal by the collimator jaw. However, a good comparison was found between fits of the diffusion model and the subsequent loss decay. In addition, the fitted diffusion coefficients compare well to the coefficients estimated from the core emittance growth rates as a function of action.

  9. Robert Putnam : miks peaksime naabritega rohkem rääkima? / Robert Putnam ; interv. Külli-Riin Tigasson

    Index Scriptorium Estoniae

    Putnam, Robert

    2006-01-01

    26. mail Tallinnas toimuva Avatud Ühiskonna Foorumi peaesineja, Harvardi Ülikooli professor väidab, et mida paremini tuntakse oma naabreid, mida aktiivsemalt osaletakse kohalikus elus ning mida rohkem inimesed omavahel suhtlevad, seda paremaks ja turvalisemaks muutub nende elukeskkond. Lisad: Robert Putnam (sünd 1941); Kuidas kasvatada sotsiaalset kapitali?

  10. Antropologia e filosofia: estética e experiência em Clifford Geertz e Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Relivaldo Pinho de Oliveira

    2012-06-01

    Full Text Available Este artigo estuda as concepções de estética e experiência de Clifford Geertz e Walter Benjamin como possibilidades argumentativas e metodológicas para pensar a realidade e suas formas estéticas. Utiliza-se para isso as discussões metodológicas de Geertz, especialmente a respeito do lugar da estética e de sua relação com os demais âmbitos do humano, que encetaram uma nova forma de concebê-los para a etnografia e antropologia de modo geral, e os estudos de Benjamin a respeito da estética como expressão fisionômica de uma época, de determinada realidade, especialmente os que se referem sobre a modernidade. Constata-se essa possibilidade a partir da observação de que a estética e a experiência, nos autores, são tomadas como dimensões da realidade que se relacionam, não de modo mecânico, e sim como âmbitos que atravessam a realidade, os artefatos estéticos, os discursos, e esses assim devem ser observados.This article study the conceptions of aesthetics and experience of Clifford Geertz and Walter Benjamin as argumentative and methodological possibilities for thinking reality and its aesthetic forms. Uses for this Geertz's methodological discussions, especially regarding the place of aesthetics and its relation to other spheres of the human, which has embarked on a new way of conceiving them to ethnography and anthropology in general, and studies Benjamin about the aesthetics and physiognomical expression of an era, a certain reality, especially those concerning about modernity. There is that possibility from the observation that the aesthetics and experience, in the authors, are taken as the dimensions of reality are related, not mechanically, but as areas that cross the reality, the aesthetic artifacts, the speeches, and so these must be observed.

  11. MD1228: Validation of Single Bunch Stability Threshold & MD1751: Instability Studies with a Single Beam

    CERN Document Server

    Carver, Lee Robert; Biancacci, Nicolo; Buffat, Xavier; Iadarola, Giovanni; Lasocha, Kacper; Li, Kevin Shing Bruce; Levens, Tom; Metral, Elias; Salvant, Benoit; Tambasco, Claudia; CERN. Geneva. ATS Department

    2017-01-01

    Instabilities were being routinely observed in B1V during ADJUST. The timing of the instabilities has been localised to shortly after the TOTEM bump has been implemented. The result is emittance blowup which can negatively effect the luminosity output of the fill. This MD aimed to rule out possible sources of the instability (i.e. beam-beam effects or electron cloud) by only taking one single beam to 6.5TeV and going through the full machine cycle. After the implementation of the TOTEM bump, a reduction of the octupole current was performed in order to determine if there was a discrepancy in the threshold between simulations and measurement. As a precursor, the results of the End of Fill MD: Validation of Single Bunch Stability Threshold will also be described.

  12. BI MD studies on April 22nd 2012 (LHC MD-1)

    CERN Document Server

    Baer, T; Boccardi, A; Burger, S; Calvo, E; Dehning, B; Emery, J; Gasior, M; Guerrero, A; Jones, R; Lefevre, T; Gras, JJ; Rabiller, A; Roncarolo, F; Sapinski, M; Steinhagen, R; Trad, G

    2012-01-01

    During the LHC MD block 1 in 2012, eight hours were dedicated to beam instrumentation studies. Such a period was spent mainly for estimating the betatron functions at the location of the transverse profile monitors in IR4 via the K-Modulation method and for characterizing the BSRT extraction mirror heating with high intensity beams. This note discusses the measurements summary, including some final and some preliminary results.

  13. 76 FR 20033 - Robert Charles Ley, D.O. ; Dismissal of Proceeding

    Science.gov (United States)

    2011-04-11

    ... Enforcement Administration Robert Charles Ley, D.O. ; Dismissal of Proceeding On September 28, 2009, I, the... Immediate Suspension of Registration (``Order'') to Robert Charles Ley, D.O. (Respondent), of Kihei, Hawaii... Order to Show Cause and Immediate Suspension of Registration issued to Robert Charles Ley, D.O, be,...

  14. Lahkunud maailmaparandaja Robert Lepikson jäi igavesti otsijaks / Kai Kalamees

    Index Scriptorium Estoniae

    Kalamees, Kai

    2006-01-01

    Ülevaade riigikogu liikme, endise siseministri, Tallinna linnapea ja Võru maavanema Robert Lepiksoni elukäigust, meenutused tuntud ühiskonnategelastelt. Lisad: Robert Lepikson; Kõva sõnaga mees. Vt. samas: Turvavaatleja vastutusrikas töö viimasel rallil; Ivar Raidam: Lepiksoni panus autosporti oli tohutu; Hans H. Luik: Respect, Robert!

  15. MD5算法在Web开发中的应用%Application of MD5 in Web Exploitation

    Institute of Scientific and Technical Information of China (English)

    刘啸

    2014-01-01

    介绍了MD5加密技术在Web上的一些应用,给出了MD5加密实现密码在internet上安全传输的完整解决办法,给出了客户端(JavaScript)和服务器端(JavaBeans) MD5算法的实现.

  16. Transitioning Natures: Robert Schuller’s Garden Grove Experiment

    Directory of Open Access Journals (Sweden)

    Antonio Petrov

    2016-09-01

    Full Text Available Through the lens of Evangelist Reverend Robert H. Schuller’s Garden Grove drive-in walk-in church, this paper aims to exemplify how his architecture has transcended existing geographies that have long been anchored by the epistemology of what can be referred to as traditional “religious” architecture. This paper examines how Schuller instrumentalized broader imbrications of political contexts to change or manipulate the traditional religious subject. It also presents how Robert Schuller’s Garden Grove experiment reconceptualized “territory” as an evolving ideological dimension; not as a trajectory, or as transitory space, but as inhabitable third nature. My analysis challenges established readings of religious architecture as being interiorized manifestations. To do so, it poses the following questions: how does this meta-geographical dimension shed new light on questions of (traditional architectural aesthetics in Protestant architecture? What spaces and politics does it produce? Does the third nature have a history of its own?

  17. Antes de los Estudios Culturales. Robert Warshow y la experiencia

    Directory of Open Access Journals (Sweden)

    Antonio Lastra

    2008-01-01

    Full Text Available Este artículo estudia la influencia del concepto de experiencia que desarrolla Robert Warshow. Warshow ha supuesto el contrapunto americano a las teorías desarrolladas por Walter Benjamien en Europa. Si bien ambos insistieron en la pobreza de la experiencia, como resultado de la tecnificación de la sociedad, Warshow supo introducir matizaciones que influyeron en todo el círculo de intelectuales concentrados en Nueva York durante la etapa de consolidación de los Estudios Culturales. This paper studies the influence of the experience concept by Robert Warshow. Warshow is the American counterpoint to theories developed by Walter Benjamin in Europe. Although both insisted in the poverty of experience, as a result of technique, Warshow knew how to introduce nuances that influenced intellectuals in New York as Cultural Studies emerged.

  18. Robert Aymar receives one of the highest Finnish distinctions

    CERN Multimedia

    2008-01-01

    On 9 December 2008 Robert Aymar, CERN Director-General, was awarded the decoration of Commander, first class, of the Order of the Lion of Finland by the President of the Republic of Finland. This decoration, one of the highest of Finland, was presented in a ceremony by the Ambassador Hannu Himanen, Permanent Representative of Finland to the UN and other international organisations in Geneva. Robert Aymar was honoured for his service to CERN, the LHC, his role in the cooperation between Finland and CERN, as well as his contribution to science in general. In his speech the ambassador underlined CERN’s efforts in the field of education, mentioning the High school teachers programme.

  19. BI MD studies on August 25th 2011

    CERN Document Server

    Belohrad, D; Boccardi, A; Calvo, E; Dehning, B; Favier, M; Emery, J; Guerrero, A; Lefevre, T; Gras, JJ; Jeff, A; Soby, L; Rabiller, A; Roncarolo, F; Sapinski, M; Steinhagen, R; Mateo, CM

    2011-01-01

    This note contains the preliminary results of the LHC MD that took place on 25-Aug-2011 (from 5 a.m. to 1 p.m.), dedicated to study Beam Loss Monitors (BLM), Wire Scanners (WS), Synchrotron Radiation (BSRT), Beam Position Monitors (BPM), and Beam Gas Ionization (BGI) monitors. The MD aimed at performing different studies on the individual monitors.

  20. MD5密码极速爆破

    Institute of Scientific and Technical Information of China (English)

    飘零雪

    2009-01-01

    MD5加密技术对我们来说并不陌生,通过MD5值可以校验下载软件的安全性,而且在很多系统中,用户的密码是以MD5值的方式保存的,用户登录时系统是把用户输入的密码计算成MD5值,然后再去和系统中保存的MD5值进行比较,以验证该用户的合法性。MD5值虽看似很安全,但也并非无懈可击,使用“超速md5破解工具”即可简单快捷地尝试解密MD5。

  1. Single-block collision attack on MD5

    NARCIS (Netherlands)

    Stevens, M.M.J.

    2012-01-01

    In 2010, Tao Xie and Dengguo Feng \\cite{cryptoeprint:2010:643} constructed the first single-block collision for MD5 consisting of two 64-byte messages that have the same MD5 hash. Details of their attack, developed using what they call an evolutionary approach, has not been disclosed ``for security

  2. Chosen-Prefix Collisions for MD5 and Applications

    NARCIS (Netherlands)

    Stevens, M.M.J.; Lenstra, A.K.; Weger, B. de

    2012-01-01

    We present a novel, automated way to find differential paths for MD5. Its main application is in the construction of \\emph{chosen-prefix collisions}. We have shown how, at an approximate expected cost of $2^{39}$ calls to the MD5 compression function, for any two chosen message prefixes $P$ and $P'$

  3. 33 CFR 110.72 - Blackhole Creek, Md.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Blackhole Creek, Md. 110.72... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.72 Blackhole Creek, Md. The waters on the west side of Blackhole Creek, a tributary of Magothy River, southwest of a line bearing 310°30′ from the most...

  4. Waiting time distribution in M/D/1 queueing systems

    DEFF Research Database (Denmark)

    Iversen, Villy Bæk; Staalhagen, Lars

    1999-01-01

    The well-known formula for the waiting time distribution of M/D/1 queueing systems is numerically unsuitable when the load is close to 1.0 and/or the results for a large waiting time are required. An algorithm for any load and waiting time is presented, based on the state probabilities of M/D/1...

  5. Robert Lee Replogle, September 30, 1931-May 9, 2016.

    Science.gov (United States)

    Ferguson, Mark K

    2016-10-01

    The world of cardiothoracic surgery lost a friend and remarkable colleague on May 9, 2016. Robert L. Replogle, the 31st President of The Society of Thoracic Surgeons, died at the University of Chicago Medical Center after a brief illness, surrounded by his loving family. Known to his friends as "Rep," he will be remembered as an excellent pediatric and adult cardiac surgeon and as a visionary leader.

  6. Robert Blumenthal: More than 40 Years at FNL | Poster

    Science.gov (United States)

    By Carolynne Keenan, Guest Writer Robert Blumenthal, Ph.D., is a nanotechnology and cell membrane expert at Frederick National Laboratory for Cancer Research (FNL)—just as you would imagine someone with more than 40 years of experience in biomedical research would be. Blumenthal started his career as a principal investigator (PI) at NCI in Bethesda, but since 1997, he has called FNL (formerly NCI-Frederick) his home.

  7. Robert Willis and the rise of architectural history

    OpenAIRE

    Buchanan, A. C.

    1994-01-01

    This thesis is an examination of the contribution of the English scholar, Robert Willis (1800-1875) to the discipline of architectural history. Willis's writings are set within a context of nineteenth-century antiquarian scholarship and their methodology and conclusions explored and evaluated. the work i not treated as a conventional biography, for reasons given in the Introduction, but divided into sections dealing with the different types of work produced by Wilils. chapter One examines Wil...

  8. Robert K. Merton (4 July 1910 - 23 February 2003).

    Science.gov (United States)

    Holton, Gerald

    2004-12-01

    Robert K. Merton, one of the greatest sociologists of our time, and the doyen of the sociology of science, died in Manhattan on 23 February 2003, at the age of ninety-two. He was an exemplary discipline-builder who formulated key concepts with which to perceive and solve sociological problems, a masterful teacher, and a kind colleague. His passing left a large void in the intellectual world of social science.

  9. Robert Frost and his Poem The Way not Taken

    Institute of Scientific and Technical Information of China (English)

    张晓珊

    2006-01-01

    Robert Frost is one of the most celebrated poets in America as well in the world. This article mainly concerned about his life, the subject matter of Frost' s poems and his writing style. Particularly, the article makes a detailed analysis of his poem "the road not taken which is the typical of the poet' s style and relate the poem with the whole life of Frost.

  10. Perfil académico del profesor robert a. mundell

    OpenAIRE

    Ciencias de Suecia Academia Real de

    2009-01-01

    Robert A. Mundell es Profesor de Economía de la Universidad de Culumbia en Nueva York de 1974. Despues de estudiar en el MIT y en la Escuela de Economía de Londres, recibio su Ph.D en el MIT en 1956. Obtuvo la Beca Postdoctoral en Economía Politica en la Universidad de Chicago en 1956-1957.

  11. Robert J. Aumann - matemaatikust Nobeli preemia laureaat / Peeter Puusemp

    Index Scriptorium Estoniae

    Puusemp, Peeter, 1947-

    2006-01-01

    2005. a. Nobeli preemia majanduse alal silmapaistva panuse eest mänguteooria ülesannete lahendamisse saanud Robert J. Aumannist ja D. Saari loetelu matemaatikutest - Nobeli preemia laureaatidest: John Nash'ist, Herbert Hauptman'ist, John Pople'ist, Bertrand Arthur William Russell'ist, Kenneth Joseph Arrow'ist, Gerard Debreu'ist, Leonid Vitaljevitš Kantorovitš'ist, Reinhard Selten'ist, Jan Tinbergen'ist

  12. Perfil académico del profesor Robert A. Mundell

    Directory of Open Access Journals (Sweden)

    Ciencias de Suecia Academia Real de

    1999-12-01

    Full Text Available Robert A. Mundell es Profesor de Economía de la Universidad de Culumbia en Nueva York de 1974. Despues de estudiar en el MIT y en la Escuela de Economía de Londres, recibio su Ph.D en el MIT en 1956. Obtuvo la Beca Postdoctoral en Economía Politica en la Universidad de Chicago en 1956-1957.

  13. LHC MD 1279: Bunch Flattening in Physics

    CERN Document Server

    AUTHOR|(CDS)2073675; Baudrenghien, Philippe; Esteban Muller, Juan; Shaposhnikova, Elena; CERN. Geneva. ATS Department

    2017-01-01

    Vertex reconstruction is not accurate enough for LHCb when the bunch length in physics shrinks below about 0.9 ns. The end-of-fill MD studies presented here proved that bunch flattening using sinusoidal RF modulation is a loss-free method to increase the r.m.s. bunch length and flatten the bunch profile. Furthermore, the optimum modulation parameters to be used in physics have been identified. Subsequently, bunch flattening in physics was used operationally with a modulation frequency of 98.75 % of the central synchrotron frequency and 0.6 modulation amplitude, resulting in a 150-200 ps increase in the BQM-measured bunch length. A ‘mid-of-fill’ test at arrival to flat top revealed that also the bunch distribution created by the controlled emittance blow-up during the ramp is affected when bunch flattening is applied. The measurements took place on 17th June and the 4th, 7th and 22nd July 2016. Operational cases are shown as well.

  14. Orbit Feedback Operation with RCBX (MD 1209)

    CERN Document Server

    Wenninger, Jorg; Nisbet, David; Ponce, Laurette; Louro Alves, Diogo Miguel; CERN. Geneva. ATS Department

    2017-01-01

    The LHC Orbit Feedback (OFB) is able to drive any orbit corrector circuit (COD) to steer the LHC orbit. But during the first feedback tests in 2010, all attempts to use the common triplet orbit correctors (MCBX) failed because the QPS system installed to protect those magnets triggered power aborts as soon as the OFB steered the beam with those CODs. The reason was most likely the violation of the RCBX circuit acceleration limits. For this reason the MCBX orbit correctors were never driven by the OFB in regular operation. Although the performance of the OFB is generally excellent, the quality of the beam steering around IRs could be improved if the OFB could correct the orbit with the MCBX to counteract locally triplet quadrupole movements. The aim of this MD was to make a new attempt to use the MCBX in the OFB. The test was successful at injection (no circuit trip) and failed during the ramp (QPS power abort). The PC voltages and QPS Ures signals revealed the presence of voltage spikes with a period of 10~s...

  15. EDITORIAL: Roberts Prize for the best paper published in 2011 Roberts Prize for the best paper published in 2011

    Science.gov (United States)

    Cherry, Simon; Ruffle, Jon

    2012-08-01

    The publishers of Physics in Medicine and Biology (PMB), IOP Publishing, in association with the journal owners, the Institute of Physics and Engineering in Medicine (IPEM), jointly award an annual prize for the best paper published in PMB during the previous year. The procedure for deciding the winner is a two-stage process. First, a shortlist of contenders is drawn up based on those papers that had the best referees' quality assessments, with a further quality check and endorsement by the Editorial Board. The papers on the shortlist are then reviewed by a specially convened IPEM committee consisting of members with fellow status. This committee reads the shortlisted papers and selects the winner. We have much pleasure in advising readers that the Roberts Prize for the best paper published in 2011 is awarded to Matthew Hough et al from the University of Florida, the Francis Marion University and the National Cancer Institute, USA for their paper on a comprehensive electron dosimetry model of skeletal tissues in the adult male: An image-based skeletal dosimetry model for the ICRP reference adult male—internal electron sources 2011 Phys. Med. Biol. 56 2309 Matthew Hough1, Perry Johnson1, Didier Rajon2, Derek Jokisch3, Choonsik Lee4 and Wesley Bolch1,5 1Department of Nuclear and Radiological Engineering, University of Florida, Gainesville, FL, USA 2Department of Neurosurgery, University of Florida, Gainesville, FL, USA 3Department of Physics and Astronomy, Francis Marion University, Florence, SC, USA 4Radiation Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA 5Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA Bone marrow is one of the more radiosensitive tissues in the human body and is housed within a complex structure of bone. This paper describes a comprehensive model of energy deposition by internal electron or beta particle emitters for the ICRP reference adult male based upon ex vivo CT and microCT images of

  16. Expanding the mutation and clinical spectrum of Roberts syndrome.

    Science.gov (United States)

    Afifi, Hanan H; Abdel-Salam, Ghada M H; Eid, Maha M; Tosson, Angie M S; Shousha, Wafaa Gh; Abdel Azeem, Amira A; Farag, Mona K; Mehrez, Mennat I; Gaber, Khaled R

    2016-07-01

    Roberts syndrome and SC phocomelia syndrome are rare autosomal recessive genetic disorders representing the extremes of the spectrum of severity of the same condition, caused by mutations in ESCO2 gene. We report three new patients with Roberts syndrome from three unrelated consanguineous Egyptian families. All patients presented with growth retardation, mesomelic shortening of the limbs more in the upper than in the lower limbs and microcephaly. Patients were subjected to clinical, cytogenetic and radiologic examinations. Cytogenetic analysis showed the characteristic premature separation of centromeres and puffing of heterochromatic regions. Further, sequencing of the ESCO2 gene identified a novel mutation c.244_245dupCT (p.T83Pfs*20) in one family besides two previously reported mutations c.760_761insA (p.T254Nfs*27) and c.764_765delTT (p.F255Cfs*25). All mutations were in homozygous state, in exon 3. The severity of the mesomelic shortening of the limbs and craniofacial anomalies showed variability among patients. Interestingly, patient 1 had abnormal skin hypopigmentation. Serial fetal ultrasound examinations and measurements of long bones diagnosed two affected fetuses in two of the studied families. A literature review and case comparison was performed. In conclusion, we report a novel ESCO2 mutation and expand the clinical spectrum of Roberts syndrome.

  17. An Architecture for the Electronic Church: Oral Roberts University in Tulsa, Oklahoma.

    Science.gov (United States)

    Grubiak, Margaret M

    2016-04-01

    More than a university, Oral Roberts University in Tulsa, Oklahoma, was also the headquarters for evangelist Oral Roberts's electronic church. The electronic church in America, dominated by Christian evangelicals, used technology to spread the Gospel over radio airways and television signals to a dispersed audience. Yet evangelicals like Roberts also constructed ambitious campuses in real space and time. The architecture of Oral Roberts University visualized a modern and "populuxe" image for the electronic church in the 1960s and 1970s. The university's Prayer Tower purposely alluded to the Seattle Space Needle, aligning religion and the Space Age, and the campus's white, gold, and black color palette on late modern buildings created an image of aspirational luxury, conveying Roberts's health and wealth gospel. Oral Roberts University served as a sound stage for Roberts's radio and television shows, a pilgrimage point for his audience, and a university dedicated to training evangelicals in the electronic church.

  18. Conferencias a la Memoria de la Dra. Lydia J. Roberts 1967, 1969-1973 (Conferences in Memory of Dr. Lydia J. Roberts 1967, 1969-1973).

    Science.gov (United States)

    Puerto Rico Univ., Rio Piedras.

    This publication includes eleven lectures presented as part of a conference given honoring Dr. Lydia J. Roberts. Seven of the papers are written in the English language and four in Spanish. Most of the papers relate to the topic of nutrition, but a few pay tribute to Dr. Roberts in recognition of her distinguished leadership and teacher of human…

  19. MD-PhD training: looking back and looking forward.

    Science.gov (United States)

    Bonham, Ann C

    2014-01-01

    MD-PhD programs provide rigorous, integrated training for physician-scientists, enabling them to frame scientific questions in unique ways and to apply clinical insight to fundamental science. Few would question the influential contributions of MD-PhD physician-scientists in advancing medical science. In this issue of Academic Medicine, Jeffe et al affirm high levels of excellence in educational outcomes from MD-PhD training programs at U.S. MD-granting medical schools, especially programs that receive funding from the NIH Medical Scientist Training Program (MSTP). The author of this commentary observes that, in the face of current economic pressures, comprehensive, longitudinal national outcomes data from MSTP- and non-MSTP-funded MD-PhD programs will help verify the value provided by MD-PhD physician-scientists. She proposes that MD-PhD programs should better prepare the next generation of physician-scientists for future research environments, which will provide new technologies, venues, and modalities. These research environments will be more closely integrated within health care delivery systems, extend into diverse communities and regions, and employ complex technologies. MD-PhD physician-scientists also will train and gain expertise in broadening areas of research, such as health policy, health economics, clinical epidemiology, and medical informatics. Program leaders are ideally situated to foster innovative learning environments and methodologies. By sharing their innovations, they can help ensure production of a diverse MD-PhD physician-scientist workforce, prepared to engage in myriad research opportunities to meet patient and population needs in a new environment.

  20. MD5加密算法的研究

    Institute of Scientific and Technical Information of China (English)

    许琪

    2014-01-01

    MD5加密算法做为散列函数的一个重要算法,在文件校验、数字签名等诸多领域有着广泛的应用.虽然MD5加密算法是单向算法,但其仍无法抵御差分攻击和查字典攻击.文章在分析了差分攻击原理的基础上,阐述了MD5加密算法采用差分攻击产生碰撞的方法.

  1. The Achromatic Telescopic Squeezing (ATS) MD part III

    CERN Document Server

    Fartoukh, S; Goddard, B; Hofle, W; Jacquet, D; Kruk, G; Lamont, M; de Maria, R; Miyamoto, R; Mueller, G; Pojer, M; Ponce, L; Redaelli, S; Ryckx, N; Steinhagen, R; Strzelczyk, M; Vanbavinckhove, G; Wenninger, J

    2011-01-01

    This note highlights the results obtained during the third so-called ATS MD which took place in 2011. The goal of this MD was extremely challenging, targeting a pre-squeezed beta* of 40 cm in ATLAS and CMS, followed by a telescopic squeeze of these two insertions to finally reach a beta* of 10 cm both at IP1 and IP5. Due to the rather poor machine availability during the MD period, the time initially allocated to the ATS studies was hardly cut by a factor of 2, and "only" the achromatic pre-squeeze down to beta*=40 cm was demonstrated with beam.

  2. MD5Hash加密算法在SQL Server2005中的应用%Application of MD5 Hash Encryption Algorithm in SQL Server 2005

    Institute of Scientific and Technical Information of China (English)

    李红日

    2011-01-01

    在对MD5算法进行简要描述的同时,对MD5算法的原理作深入分析.介绍在C创建MD5 Hash算法的函数,在SQL Server中应用MD5哈希算法,并且经过测试可以准确实现MD5 Hash加密算法.

  3. Robert Wiltrout Says Goodbye to NCI in 2015 | Poster

    Science.gov (United States)

    After 34 years at NCI, Robert Wiltrout, Ph.D., said he is looking forward to trading his I-270 commute for another type of commute: exploring the waterways of Maryland, Alaska, and Wyoming to fulfill his love of fishing. Wiltrout officially retired as director of the NCI Center for Cancer Research (CCR) on July 2 of last year. Throughout his college academic career, Wiltrout had an interest in science, but it was not until he was working on a research project for his master’s degree that he considered a career in scientific research.

  4. The Diffident Naturalist Robert Boyle and the Philosophy of Experiment

    CERN Document Server

    Sargent, Rose-Mary

    1995-01-01

    In a provocative reassessment of one of the quintessential figures of early modern science, Rose-Mary Sargent explores Robert Boyle's philosophy of experiment, a central aspect of his life and work that became a model for mid- to late seventeenth-century natural philosophers and for many who followed them. Sargent examines the philosophical, legal, experimental, and religious traditions—among them English common law, alchemy, medicine, and Christianity—that played a part in shaping Boyle's experimental thought and practice. The roots of his philosophy in his early life and education, in his re

  5. Summary Robert Noyce and the invention of Silicon Valley

    CERN Document Server

    2014-01-01

    This work offers a summary of the book "THE MAN BEHIND THE MICROCHIP: Robert Noyce and the Invention of Silicon Valley""by Leslie Berlin.The Man behind the Microchip is Leslie Berlin's first book. This author is project historian for the Silicon Valley Archives, a division of the Stanford University Department of Special Collections. This book tells the story of a giant of the high-tech industry: the multimillionaire Bob Noyce. This co-founder of Fairchild Semiconductor and Intel co-invented the integrated circuit which became the electronic heart of every modern computer, automobile, advance

  6. On the Study of Richard Tom Robert Identity

    CERN Document Server

    Tsai, Yeong-Shyeong

    2008-01-01

    In order to estimate the average speed of mosquitoes, a simple experiment was designed by Richard (Lu-Hsing Tsai), Tom (Po-Yu Tsai) and Robert (Hung-Ming Tsai). The result of the experiment was posted in the science exhibitions Taichung Taiwan 1993. The average speed of mosquitoes is inferred by the simple relation is obtained In this paper, we will show how to get the data generated by computer. Though the rigorous proof is not shown, a sketch proof will be shown in this paper

  7. An Archetypal Study of Plant Imagery in Robert Frost's Poems

    Institute of Scientific and Technical Information of China (English)

    邱芬芬

    2016-01-01

    As one of the most popular American poets in the twentieth century, Robert Frost demonstrated myriads of universally acknowledged works to the world. This paper aims to analyze the plant imagery appearing in his poems from the perspective of archetypal theory. This study, on the basis of analyzing poetic texts, utilizes content analysis to classify plant images into four types and work out relevant statistics. After data analysis based on thematology and archetypal theory, the study finds that plant images in his poems demonstrate the relationship between human beings and nature, psychological conflicts of the poet, death and dismay, expectation for life and rebirth.

  8. Robert Aymar awarded the Légion d’honneur

    CERN Multimedia

    CERN Bulletin

    2011-01-01

      On 24 May, Robert Aymar, CERN Director-General from 2004 to 2008, was awarded the Légion d’honneur by the French authorities in recognition of his outstanding scientific career. A renowned French physicist, he was Director of the superconducting tokamak Tore Supra from 1977 to 1988, Director of Material Sciences at the CEA in 1990 and Director of the ITER project in 1994. His term of office as CERN Director-General was marked in particular by the commissioning and start-up of the LHC machine, which he inaugurated on 21 October 2008.        

  9. Did Robert Louis Stevenson have hereditary hemorrhagic telangiectasia?

    Science.gov (United States)

    Guttmacher, A E; Callahan, J R

    2000-03-06

    Chronic illness played a major role in the life and literary success of Robert Louis Stevenson. However, the exact nature of his chronic illness remains unclear. It is possible that Stevenson had hereditary hemorrhagic telangiectasia (Osler-Rendu-Weber Syndrome). This would explain his chronic respiratory complaints, recurrent episodes of pulmonary hemorrhage, and his death, at age 44 years, of probable cerebral hemorrhage. It would also explain his mother's hitherto unreported but apparent stroke, at age 38 years. Further support for this hypothesis might come from new details about the health of Stevenson and his relatives or from molecular analysis of tissue specimens remaining from him.

  10. Molecular Dynamics Simulations and XAFS (MD-XAFS)

    Energy Technology Data Exchange (ETDEWEB)

    Schenter, Gregory K.; Fulton, John L.

    2017-01-20

    MD-XAFS (Molecular Dynamics X-ray Adsorption Fine Structure) makes the connection between simulation techniques that generate an ensemble of molecular configurations and the direct signal observed from X-ray measurement.

  11. Música e vozes em Pickpocket (1959, de Robert Bresson

    Directory of Open Access Journals (Sweden)

    Luíza Alvim

    2014-12-01

    Full Text Available Music and voices in Pickpocket (1951, by Robert Bresson – The French director Robert Bresson was known for his creative use of sound elements and the scanty insertion of music in his films. In films produced during the intermediary phase of his career, such as A man escaped (1956, Pickpocket (1959 and Au hasard Balthazar (1966, preexisting classical music pieces, which contain formal aspects that are analogous to their distribution in the respective films, were used as non-diegetic music. Moreover, in Pickpocket, the preexisting music by Lully also relates to the voice-in and voice-over. The voice-in at the end of the dialogues usually triggers musical excerpts, which are inserted in situations of movement and whose function resembles that of divertissements in baroque opera. We also consider the relations between voice-in and voice-over and the lag between the latter and the action and the image of the main character’s diary as it is being written.

  12. Robert Schumann in the psychiatric hospital at Endenich.

    Science.gov (United States)

    Steinberg, Reinhard

    2015-01-01

    Robert Schumann (1810-1856) spent the last two-and-a-half years of his life in the private psychiatric hospital in Endenich. His medical records emerged in 1991 and were published by B. R. Appel in 2006. Daily entries document the treatment typical at that time for what was at first considered to be "melancholy with delusions": Shielding from stimuli, physical procedures, and a dietary regimen. The feared, actual diagnosis, a "general (incomplete) paralysis," becomes a certainty in the course of the paranoid-hallucinatory symptoms with cerebro-organic characteristics and agitated states, differences in pupil size, and increasing speech disturbances. In the medicine of the time, syphilis is just emerging as the suspected cause, and the term "progressive paralysis" is coined as typical for the course. Proof of the Treponema pallidum infection and the serologic reaction is not obtained until 1906. People close to Robert, in particular his wife Clara and the circle of friends around Brahms and Joachim, cared intensively for him and suffered under the therapeutic isolation. The medical records and illness-related letters contradict the theory that Schumann was disposed of by being put into the psychiatric hospital; they show the concern of all during the unfavorable illness course.

  13. Improvement on The Ellis and Roberts Viability Model

    Directory of Open Access Journals (Sweden)

    Guoyan Zhou

    2016-06-01

    Full Text Available With data sets of germination percent and storage time of seed lot of wheat and sorghum stored at three different storage temperature(t, °C with three different water content (m, % of seeds, together with data set of buckwheat and lettuce reported in literatures, the possibility that seed survival curve were transformed into line by survival proportion and the relationship that logarithm of average viability period (logp50 and standard deviation of seed death distribution in time (δwith t, m and interaction between t and m were analysed. Result indicated that survival proportion transformed seed survival curve to line were much easier than the probability adopted by Ellis and Roberts, and the most important factor affecting logp50 and δ of seed lot was interaction between t and m. Thus, Ellis and Roberts viability model were suggested to be improved as Ki=Vi-p/10K-CWT (t×m to predict longevity of seed lot with initial germination percent unknown, a new model of Gi/G0=A-P/10K-CWT(t×m was constructed to predict longevity of seed lot with initial germination percent already known.

  14. Research of the Hash Algorithm Based on MD5%MD5散列算法的研究

    Institute of Scientific and Technical Information of China (English)

    姜学军; 曹烨

    2014-01-01

    借鉴了M.M.J.Stevens的碰撞思路,重新编写了MD5碰撞算法中的核心循环,主要提供一对MD5碰撞产生的过程以及碰撞的完成.通过实验统计分析,利用改进的MD5碰撞算法找到一对碰撞信息所用平均时间不多于60s,且该算法较之传统的MD5碰撞算法具有更好的可读性和可移植性.

  15. 基于MD5和Session的PHP安全防范%PHP security based on Session and MD5

    Institute of Scientific and Technical Information of China (English)

    何秉荣

    2014-01-01

    根据Session工作原理和MD5算法的特性,分析了PHP中Session欺骗与攻击手段,并较有针对性地在防范Session攻击的技术中结合MD5函数,从而提出了一个较为有效、实用的防范措施.

  16. 格尔茨与科学文化现象学%Clifford Geertz and Scientific Phenomenology of Culture

    Institute of Scientific and Technical Information of China (English)

    李清华

    2012-01-01

    In his long career of anthropology, Clifford Geertz created a study of scientific phenomenology of culture in the field of cultural anthropology with a solid methodology and sufficient facts based on his excellent ethnographic practices and profound theoretical reflection. The study of scientific phenomenology of euhure is not purely a theory but a collection of his interpretations and descriptions of specific cultural phenomena and behaviors. This is due to his prudent or even suspicious attitude towards constructing pure theories in the field of anthropology on one hand, and his view of local knowledge and the thick description method he advocated on the other hand. A full and accurate understanding of his ideas can be achieved through connecting his study with specific individual cases.%在漫长的人类学职业生涯中,格尔茨凭借卓越的民族志实践和深刻的理论反思,在人类学文化研究领域创建了一门有着自身坚实的方法论基础和充分的事实依据的科学的文化现象学。这门科学的文化现象学并非以纯粹的理论形态存在,而是存在于对具体文化现象和文化行为的阐释和描述中。这一方面与他对人类学领域纯粹理论建构行为持一种审慎甚至怀疑的态度直接相关,另一方面也是由他的地方性知识观和他所倡导的深描方法所决定的。我们对其科学文化现象学思想的研究只有结合具体的研究个案才能获得全面准确的把握。

  17. The platypus in Edinburgh: Robert Jameson, Robert Knox and the place of the Ornithorhynchus in nature, 1821–24

    Science.gov (United States)

    Jenkins, Bill

    2016-01-01

    SUMMARY The duck-billed platypus, or Ornithorhynchus, was the subject of an intense debate among natural historians in the late eighteenth and early nineteenth centuries. Its paradoxical mixture of mammalian, avian and reptilian characteristics made it something of a taxonomic conundrum. In the early 1820s Robert Jameson (1774–1854), the professor of natural history at the University of Edinburgh and the curator of the University's natural history museum, was able to acquire three valuable specimens of this species. He passed one of these on to the anatomist Robert Knox (1791–1862), who dissected the animal and presented his results in a series of papers to the Wernerian Natural History Society, which later published them in its Memoirs. This paper takes Jameson's platypus as a case study on how natural history specimens were used to create and contest knowledge of the natural world in the early nineteenth century, at a time when interpretations of the relationships between animal taxa were in a state of flux. It shows how Jameson used his possession of this interesting specimen to provide a valuable opportunity for his protégé Knox while also helping to consolidate his own position as a key figure in early nineteenth-century natural history. PMID:27671001

  18. Cummins MD & HD Accessory Hybridization CRADA -Annual Report FY15

    Energy Technology Data Exchange (ETDEWEB)

    Deter, Dean D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-10-01

    There are many areas of MD and HD vehicles that can be improved by new technologies and optimized control strategies. Component optimization and idle reduction need to be addressed, this is best done by a two part approach that includes selecting the best component technology, and/or architecture, and optimized controls that are vehicle focused. While this is a common focus in the light duty industry it has been gaining momentum in the MD and HD market as the market gets more competitive and the regulations become more stringent. When looking into systems optimization and idle reduction technologies, affected vehicle systems must first be considered, and if possible included in the new architecture to get the most benefit out of these new capabilities. Typically, when looking into idle reduction or component optimization for MD/HD, the vehicle s accessories become a prime candidate for electrification or hybridization. While this has already been studied on light duty vehicles (especially on hybrids and electric vehicles) it has not made any head way or market penetration in most MD and HD applications. If hybrids and electric MD and HD vehicles begin to break into the market this would be a necessary step into the ability to make those vehicles successful by allowing for independent, optimized operation separate from the engine.

  19. Between genres and styles in the films of Robert Bresson

    Directory of Open Access Journals (Sweden)

    Luíza Beatriz Alvim

    2016-02-01

    Full Text Available The films of French director Robert Bresson are considered sober and transcendental. However, in A gentle woman (1969 and in Four nights of a dreamer (1972, he included extracts of quite different genres, like a libertine comedy (the extract of film Benjamim by Michel Deville, 1968, a Shakespearean tragedy (a performance of Shakespeare´s Hamlet and a gangster film (When love possesses us, produced by Bresson himself. In a way, those excerpts represent exactly the opposite of Bresson´s cinema. On the other hand, they still have some familiarity with it. We analyze the approach of those genres in the sequences in Bresson´s films, as well of the styles present in them by the use of music and images of paintings.

  20. Charles Robert Darwin and Argentina's National Academy of Sciences

    Directory of Open Access Journals (Sweden)

    Pedro José Depetris

    2009-04-01

    Full Text Available Over 175 years ago Charles Robert Darwin arrived in Argentina to find a bare and boundless plain, the brave centaur called "gaucho", Quaternary fossils everywhere, and a society strikingly strange and aggressive to the British eyes of the young traveller. Although the voyage aboard HMS Beagle was the indispensable way towards increasing his stature as a biologist, Lyell's work awakened an inquisitive geological mind which allowed him to wonder at the splendour of the Andes. Forty-two years after having concluded his voyage on the Beagle, the National Academy of Sciences of Argentina appointed him as an Honorary Member. This must be interpreted as an early gesture of recognition -in the context of those times- to the magnificence of his scientific work.

  1. Gravitation and the earth sciences: the contributions of Robert Dicke

    CERN Document Server

    Kragh, Helge

    2015-01-01

    The American physicist Robert Dicke (1916-1997) is primarily known for his important contributions to gravitation, cosmology, and microwave physics. Much less known is his work in geophysics and related areas of the earth sciences in which he engaged himself and several of his collaborators in the period from about 1957 to 1969. Much of Dicke's work in geophysics was motivated by his wish to obtain evidence in support of the non-Einstenian Brans-Dicke theory of gravitation. The idea of a decreasing gravitational constant, as entertained by Dicke and some other physicists (including Pascual Jordan), played some role in the process that transformed the static picture of the Earth to a dynamical picture. It is not by accident that Dicke appears as a minor actor in histories of the plate tectonic revolution in the 1960s.

  2. Robert Delpire, éditeur d’albums

    Directory of Open Access Journals (Sweden)

    Cécile Boulaire

    2010-06-01

    Full Text Available Pourquoi un ex-étudiant en médecine, devenu très rapidement un éditeur de photographie estimé, puis un directeur d’agence recherché, s’est-il intéressé à l’album pour enfants, au point de publier, sur une durée d’une douzaine d’années, quelques-uns des albums les plus marquants qu’a connus la France de la décennie 1955-1965 ? Comment l’idée a-t-elle germé qu’on pouvait publier, dans la même maison que Doisneau,Cartier-Bresson et Robert Frank, des albums qu’André François, Reiner Zimnik et Ala...

  3. Robert Heath Lock and his textbook of genetics, 1906.

    Science.gov (United States)

    Edwards, A W F

    2013-07-01

    Robert Heath Lock (1879-1915), a Cambridge botanist associated with William Bateson and R. C. Punnett, published his book Recent Progress in the Study of Variation, Heredity, and Evolution in 1906. This was a remarkable textbook of genetics for one appearing so early in the Mendelian era. It covered not only Mendelism but evolution, natural selection, biometry, mutation, and cytology. It ran to five editions but was, despite its success, largely forgotten following Lock's early death in 1915. Nevertheless it was the book that inspired H. J. Muller to do genetics and was remembered by A. H. Sturtevant as the source of the earliest suggestion that linkage might be related to the exchange of parts between homologous chromosomes. Here we also put forward evidence that it had a major influence on the statistician and geneticist R. A. Fisher at the time he was a mathematics student at Cambridge.

  4. Robert Schumann and translation: poetic creativity, simultaneity and movement

    Directory of Open Access Journals (Sweden)

    João Azenha Junior

    2012-07-01

    Full Text Available In diesem Aufsatz werden die Gesammelten Schriften über Musik und Musiker von Robert Schumann untersucht, insbesondere die Rezensionen, die der Komponist zwischen 1834 und 1836 verfasst hat. Es soll festgestellt werden, inwiefern sich darin die wichtigsten Auffassungen über Sprache und Übersetzung, die Ende des 18. und Beginn des 19. Jahrhunderts in Deutschland entstanden, wiederfinden. Im Vordergrund der Untersuchung steht die Dimension der Bewegung, die sich sowohl im Individuum als auch in der Zeit festmachen lässt. Im Individuum manifestiert sich die Bewegung als ein sehr persönlicher Vorgang, da es sich innerhalb verschiedener Zeichensysteme bewegt, die seine Gedanken ausdrücken; oder aber es bewegt sich innerhalb verschiedener Sprachen. Die Zeitdimension wiederum bedeutet, in ein Umfeld einzutauchen, das die Zeitbarrieren überwindet und die Vergangenheit auf einen Schlag mit der Gegenwart und der Zukunft verbindet.

  5. Surgical appreciation of Robert Boyle in the 21st century.

    Science.gov (United States)

    Murphy, D L

    2000-12-01

    Robert Boyle was known as the Father of Chemistry. He lived at a time when science and religion were closely linked. It was a pious and puritanical time, but also a time of great enlightenment. His original and paramount thesis, that air has weight, has given us Boyle's gas law. Another of his writings in the Cowlishaw Collection is on religion. It is stated that, at one stage, he was deliberating whether to be a scientist or a priest. Surgical appreciation of Boyle's law has poignant application in scientific methods and research in the 21st century. The development of advanced laparoscopic surgery represents a challenging new era in surgery that was not envisaged by our surgical predecessors. Basic surgical research into the effects of gas pressure on renal function and bowel response will be presented.

  6. Caruso St.John and Robert Smithson: Interferences

    Directory of Open Access Journals (Sweden)

    Emilia Hernández Pezzi

    2016-05-01

    Full Text Available Intersecting points of view are the common theme of this issue of Cuadernos. The protagonists of our proposed point of intersection are the artist Robert  Smithson and the architects Adam Caruso and Peter St. John. Caruso and St. John refer to the North American artist’s work in order to explain their  remodeling project of Stortorget, the town square around the baroque  cathedral in the center of Kalmar, Sweden. With this idea as a starting point, we explore the work and the concerns of both the artist and the architects which allows us to describe convergences and harmonies of processes despite their thematic, ideological, and stylistic differences.

  7. Robert Musil y los Estados desunificados de Europa

    Directory of Open Access Journals (Sweden)

    Bayón, Fernando

    2006-12-01

    Full Text Available This article is a study of Robert Musil´s work “The Man Without Qualities” from philosophical sources. It is a novel that has produced so many overriding metaphors through which we can better understand the crises of the social identity on the horizont of the last modernity in Europe. Much of the key-concepts that helped in creating the so called “Leyend of Modernity” start to vanish in an irremediable way: not only did Musil trace the disappearance of the support for national aspirations and social cohesion, he also showed us how culture is a mad carrousel of collapsed expectations, and how the prevailing idea of “subjectivity” lacks today any solid or essential nucleus. In the middle of this disenchanted landscape of Europe, where all the modern and clasical illusions became nothing, appears however “a new human being”, since the man “without qualities” is the man with endless possibilities too.El presente ensayo es una interpretación de la novela de Robert Musil “El hombre sin atributos” a partir de fuentes filosóficas. Se trata de una obra que ha producido algunas metáforas decisivas para comprender las crisis de la identidad social en el horizonte de la última modernidad europea. Muchos de los conceptos clave que ayudaron a crear la leyenda de la modernidad empiezan a erosionarse de modo irreversible: se descomponen las aspiraciones nacionales, el sujeto pierde su núcleo sustancial y la cultura es un carrusel de esperanzas abortadas incapaces de responder a ninguna idea rectora. Y, sin embargo, en el paisaje de esta Europa tardomoderna en que se han agotado las pasadas ilusiones surge la idea de que el “hombre sin atributos” es también el “hombre de las posibilidades”.

  8. Robert Dahl e o dilema da igualdade na democracia moderna

    Directory of Open Access Journals (Sweden)

    Jawdat Abu-El-Haj

    2008-01-01

    Full Text Available Este artigo analisa a evolução dos diálogos que Robert Dahl encetou com três das principais correntes da ciência política: a teoria da modernização, a teoria da escolha racional e a perspectiva da cultura política. Nas primeiras obras o autor considerava que a inclusão política era uma consequência do confronto entre situação e oposição. Nos seus últimos trabalhos, Dahl retornou às origens socialistas utópicas e inverteu a ordem de prioridades. A ameaça à democracia contemporânea já não deriva da concentração de poderes políticos numa só instância, mas sim da crescente desigualdade de condição que gera a resignação e o abandono da participação pública por parte dos cidadãos.This article analyzes the development of Robert Dahl's interrogations of the three main currents of political science: the theory of modernization, the theory of rational choice and the political culture approach. In his early work the author believed that political inclusion is the outcome of the opposition between situation and opposition. In his later work, Dahl returned to his utopian socialist origins and reversed the order of priorities. The threat to modern democracy no longer lies in the concentration of political power in one institution, but rather in the increasing inequality of condition, which produces resignation and leads citizens to give up participating in the political process.

  9. Robert Hooke: early respiratory physiologist, polymath, and mechanical genius.

    Science.gov (United States)

    West, John B

    2014-07-01

    Robert Hooke (1635-1703) was a polymath who made important contributions to respiratory physiology and many other scientific areas. With Robert Boyle, he constructed the first air pump that allowed measurements on small animals at a reduced atmospheric pressure, and this started the discipline of high-altitude physiology. He also built the first human low-pressure chamber and described his experiences when the pressure was reduced to the equivalent of an altitude of ∼2,400 m. Using artificial ventilation in an animal preparation, he demonstrated that movement of the lung was not essential for life. His book Micrographia describing early studies with a microscope remains a classic. He produced an exquisite drawing of the head of a fly, showing the elaborate compound eye. There is also a detailed drawing of a flea, and Hooke noted how the long, many-jointed legs enable the insect to jump so high. For 40 years, he was the curator of experiments for the newly founded Royal Society in London and contributed greatly to its intellectual ferment. His mechanical inventions covered an enormous range, including the watch spring, the wheel barometer, and the universal joint. Following the Great Fire of London in 1666, he designed many of the new buildings in conjunction with Christopher Wren. Unfortunately, Hooke had an abrasive personality, which was partly responsible for a lack of recognition of his work for many years. However, during the last 25 years, there has been renewed interest, and he is now recognized as a brilliant scientist and innovator.

  10. 'A Photographic Scramble through Spain': El papel del libro de Charles Clifford en la divulgación de una imagen de España / An image of Spain in Charles Clifford’s book

    Directory of Open Access Journals (Sweden)

    Rachel Bullough

    2013-09-01

    Full Text Available Al fotógrafo británico, Charles Clifford (1819-1863 se le conoce como uno de los pioneros de la fotografía comercial en España. Sin embargo, hasta ahora, poco se sabe sobre el papel que jugó su libro A Photographic Scramble through Spain como complemento a sus fotografías. Este trabajo analiza el uso del libro, no sólo como herramienta comercial, sino en su papel de proyectar la imagen de España que Clifford deseaba mostrar a sus clientes y lectores en el Reino Unido.The British photographer, Charles Clifford (1819-1863 is best known as one of the pioneers of commercial photography in Spain. However, until now, little has been said about the role of his book, A Photographic Scramble through Spain as a complement to his photographs. This study will show how Clifford not only used the book as a commercial instrument but also as a means to convey the image of Spain that he wished to show to his potential buyers and readers in the United Kingdom 

  11. Tracing the Building of Robert's Connections in Mathematical Problem Solving: A Sixteen-Year Study

    Science.gov (United States)

    Ahluwalia, Anoop

    2011-01-01

    This research analyzes how external representations created by a student, Robert, helped him in building mathematical understanding over a sixteen-year period. Robert (also known as Bobby), was an original participant of the Rutgers longitudinal study where students were encouraged to work on problem-solving tasks with minimum intervention (Maher,…

  12. On the Origin of Hawaiian Creole English: A Rejoinder to Roberts [and] Response to Goodman.

    Science.gov (United States)

    Goodman, Morris; Roberts, Sarah Julianne

    1999-01-01

    Responds to comments made by Roberts in a previous article that attributed certain claims to this author regarding the role of a worldwide nautical pidgin English in the formation of Hawaiian creole English. The author suggests that such claims were not made or were misrepresented. Roberts's response is included. (Author/VWL)

  13. Keeglist, joogiautomaatidest ja sotsiaalsest kapitalist / Robert Putnam ; interv. Airi-Alina Allaste

    Index Scriptorium Estoniae

    Putnam, Robert

    2006-01-01

    Tänapäeva üks mõjukam sotsiaaltedlane Robert Putnam, kes hiljuti esines Avatud Ühiskonna Foorumil "Sotsiaalne kapital muutuvas maailmas", sotsiaalse kapitali mõistest, siduva ja ühendava sotsiaalse kapitali omavahelistest suhtest. Lisa: Robert Putnam

  14. Behavior States and a Half-Full Glass: A Response to Mudford, Hogg, and Roberts.

    Science.gov (United States)

    Arthur, Michael

    2000-01-01

    In this response to critiques (Mudford, Hogg and Roberts 1997, 1999) of the use of behavior states in research involving individuals with mental retardation, it is argued that the work on behavioral state analysis by Robert D. Guess has contributed to the field at the practical, empirical, and theoretical levels. (Contains references.) (CR)

  15. CoMD Implementation Suite in Emerging Programming Models

    Energy Technology Data Exchange (ETDEWEB)

    2014-09-23

    CoMD-Em is a software implementation suite of the CoMD [4] proxy app using different emerging programming models. It is intended to analyze the features and capabilities of novel programming models that could help ensure code and performance portability and scalability across heterogeneous platforms while improving programmer productivity. Another goal is to provide the authors and venders with some meaningful feedback regarding the capabilities and limitations of their models. The actual application is a classical molecular dynamics (MD) simulation using either the Lennard-Jones method (LJ) or the embedded atom method (EAM) for primary particle interaction. The code can be extended to support alternate interaction models. The code is expected ro run on a wide class of heterogeneous hardware configurations like shard/distributed/hybrid memory, GPU's and any other platform supported by the underlying programming model.

  16. 基于C#的MD5加密算法的应用%Application of the MD5 algorithm based on C#

    Institute of Scientific and Technical Information of China (English)

    林宗朝

    2011-01-01

    介绍了WEB SYSTEM中的密钥安全性能。主要讨论了WEB SYSTEM中MD5加密算法,包含客户password安全性分析、MD5加密算法概述、基于C#的MD5加密应用介绍,以及IT SYSTEM中MD5算法的应用与IMPROVEMENT等问题。%The key safety properties of the WEB system is described,and the.MD5 encryption algorithm is discussed mainly including the user password security analysis,MD5 encryption algorithm summary,MD5 encryption applications based on the C# and the improvement of MD5 algorithm.

  17. Restructuring the syllabus for MD Pharmacology: Retrospection of bioassay

    Directory of Open Access Journals (Sweden)

    Sarita Mulkalwar

    2014-01-01

    Full Text Available Introduction: Career prospects in Pharmacology are witnessing a sea change due to fast and unanticipated development in the field of clinical research. Numerous openings exist now in academia, pharmaceutical industry, Clinical Research Organizations (CRO or as regulatory consultants, experimental pharmacologists, etc. In short, there are various options to choose from, depending on one′s interest. It′s high time we ponder now over the training programme for post-graduate students in Pharmacology. It needs to be revised keeping in mind the job prospects & uniqueness of the MD Pharmacology degree. Aim: To take suggestions of experienced pharmacologists on the present syllabus for MD Pharmacology and their opinion on continuation of Bioassay experiment which is currently an important part of it . Materials and Methods: A structured questionnaire was given to 30 experienced pharmacologists to seek their opinion on MD Pharmacology syllabus & continuation of Bioassay as a part of MD practical. Results: Out of 30 participants, 29 (96.6% did not use their knowledge of Bioassay during their 10 years of post MD career, whether in pharmaceutical industry or in academics. Only 5 of them (16.6% feel that experiment on bioassay should be continued in the current state. 76.7% of them wish it to be modified to a Dose Response Curve ( DRC . 6.71% feel that it should be totally scrapped. All the participants feel the need of revising current MD Pharmacology syllabus. Current syllabus is inclined more towards preparing good academicians but it lacks the proper training for creating good clinical research professionals. Medical writing, writing necessary documents for clinical trials including regulatory documents, writing an article for medical journals, marketing communication, product monograph and patient information of a clinical trial could be incorporated. They should be aware of the regulatory requirements for conducting studies on investigational drugs

  18. BayesMD: flexible biological modeling for motif discovery

    DEFF Research Database (Denmark)

    Tang, Man-Hung Eric; Krogh, Anders; Winther, Ole

    2008-01-01

    We present BayesMD, a Bayesian Motif Discovery model with several new features. Three different types of biological a priori knowledge are built into the framework in a modular fashion. A mixture of Dirichlets is used as prior over nucleotide probabilities in binding sites. It is trained on trans......We present BayesMD, a Bayesian Motif Discovery model with several new features. Three different types of biological a priori knowledge are built into the framework in a modular fashion. A mixture of Dirichlets is used as prior over nucleotide probabilities in binding sites. It is trained...

  19. BI MD Studies on June 29th 2011

    CERN Document Server

    Belohrad, D; Bravin, E; Calvo, E; Dehning, B; Emery, J; Favier, M; Gras, JJ; Guerrero, A; Jeff, A; Lefevre, T; Rabiller, A; Roncarolo, F; Sapinski, M; Soby, L; Steinhagen, R

    2011-01-01

    This note contains the preliminary results of the LHC MD that took place on 29-June-2011 (from 10 p.m. to 07 a.m.), dedicated to study Beam Current Monitors (BCT), Wire Scaners (WS), Synchrotron Radiation (BSRT), Beam Position (BPM), Wall Current (WCM) and Beam Gas Ionization (BGI) monitors. The MD aimed at performing different studies on the individual monitors. At the same time, it was possible to perform calibration studies with the Abort Gap (AGM) and Longitudinal Density (LDM) monitors that share the extracted light with the BSRT. Additionally some observations about the beam stability and emittance dependence on the chromaticity were performed.

  20. The South Pacific in the works of Robert Dean Frisbie

    Directory of Open Access Journals (Sweden)

    Nataša Potočnik

    2001-12-01

    In Tahiti he had ambitious writing plans but after four years of living in Tahiti, he left his plantation and sailed to the Cook Islands. He spent the rest of his life in the Cook Islands and married a local girl Ngatokorua. His new happiness gave him the inspiration to write. 29 sketches appeared in the United States in 1929, collected by The Century Company under the title of The Book of Puka-Puka. His second book My Tahiti, a book of memories, was published in 1937. After the death of Ropati 's beloved wife his goals were to bring up his children. But by this time Frisbie was seriously ill. The family left Puka-Puka and settled down on the uninhabited atoll of Suwarrow. Later on they lived on Rarotonga and Samoa where Frisbie was medically treated. Robert Dean Frisbie died of tetanus in Rarotonga on November 18, 1948. Frisbie wrote in a vivid, graceful style. His characters and particularly the atoll of Puka-Puka are memorably depicted. Gifted with a feeling for language and a sense of humor, he was able to capture on paper the charm, beauty, and serenity of life of the small islands in the South Pacific without exaggerating the stereotypical idyllic context and as such Frisbie's contribution to South Pacific literature went far deeper than that of many writers who have passed through the Pacific and wrote about their experiences. Frisbie's first book The Book of Puka-Puka was published in New York in 1929. It is the most endearing and the most original of his works. It was written during his lifetime on the atoll Puka-Puka in the Cook Islands. It is a collection of 29 short stories, episodic and expressively narrative in style. This is an account of life on Puka-Puka that criticizes European and American commercialism and aggressiveness, and presents the themes of the praise of isolation, the castigation of missionaries, and the commendation of Polynesian economic collectivism and sexual freedom. At the same time, the book presents a portrait of Frisbie himself

  1. Improved Collision Attack on Hash Function MD5

    Institute of Scientific and Technical Information of China (English)

    Jie Liang; Xue-Jia Lai

    2007-01-01

    In this paper, we present a fast attack algorithm to find two-block collision of hash function MD5.The algorithm is based on the two-block collision differential path of MD5 that was presented by Wang et al.In the Conference EUROCRYPT 2005.We found that the derived conditions for the desired collision differential path were not sufficient to guarantee the path to hold and that some conditions could be modified to enlarge the collision set.By using technique of small range searching and omitting the computing steps to check the characteristics in the attack algorithm, we can speed up the attack of MD5 efficiently.Compared with the Advanced Message Modification technique presented by Wang et al.,the small range searching technique can correct 4 more conditions for the first iteration differential and 3 more conditions for the second iteration differential, thus improving the probability and the complexity to find collisions.The whole attack on the MD5 can be accomplished within 5 hours using a PC with Pentium4 1.70GHz CPU.

  2. MD SIMULATION OF SUBTILISIN BPN' IN A CRYSTAL ENVIRONMENT

    NARCIS (Netherlands)

    HEINER, AP; BERENDSEN, HJC; VANGUNSTEREN, WF

    1992-01-01

    In this paper we present a molecular dynamics (MD) simulation of subtilisin BPN' in a crystalline environment containing four protein molecules and solvent. Conformational and dynamic properties of the molecules are compared with each other and with respect to the X-ray structure to test the validit

  3. Physical Properties of Near-Earth Asteroid 2011 MD

    NARCIS (Netherlands)

    Mommert, M.; Farnocchia, D.; Hora, J. L.; Chesley, S. R.; Trilling, D. E.; Chodas, P. W.; Mueller, M.; Harris, A. W.; Smith, H. A.; Fazio, G. G.

    2014-01-01

    We report on observations of near-Earth asteroid 2011 MD with the Spitzer Space Telescope. We have spent 19.9 h of observing time with channel 2 (4.5 {\\mu}m) of the Infrared Array Camera and detected the target within the 2{\\sigma} positional uncertainty ellipse. Using an asteroid thermophysical mod

  4. 77 FR 73967 - Drawbridge Operation Regulation; Bear Creek, Dundalk, MD

    Science.gov (United States)

    2012-12-12

    ... Regulation; Bear Creek, Dundalk, MD'' in the Federal Register (77 FR 5201). The rulemaking concerned would... proposed rulemaking the bridge owner displayed on the Wise Avenue Bridge signage that stated a 48-hour advance notice was required to open the draw bridge. This signage portrayed improper...

  5. 78 FR 65180 - Airworthiness Directives; MD Helicopters, Inc., Helicopters

    Science.gov (United States)

    2013-10-31

    ... condition, vibration, loss of tail rotor pitch control, and loss of directional control of the helicopter...-047-AD; Amendment 39-17606; AD 2013-19-24] RIN 2120-AA64 Airworthiness Directives; MD Helicopters, Inc., Helicopters AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We...

  6. 78 FR 27867 - Airworthiness Directives; MD Helicopters Inc. Helicopters

    Science.gov (United States)

    2013-05-13

    ..., leading to vibration, loss of tail rotor pitch control, and subsequent loss of tail rotor and helicopter... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; MD Helicopters Inc. Helicopters AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking...

  7. QM/MM-MD simulations of conjugated polyelectrolytes

    DEFF Research Database (Denmark)

    Sjöqvist, Jonas; Linares, Mathieu; Mikkelsen, Kurt Valentin

    2014-01-01

    description of the solvent in its electronic ground state as well as the chromophore in its electronic ground and excited states, (ii) a conformational sampling by means of classical molecular dynamics (MD) in the respective electronic states, and (iii) spectral response calculations by means of the quantum...

  8. Biomolecular recognition mechanisms studied by NMR spectroscopy and MD simulations

    NARCIS (Netherlands)

    Hsu, Shang-Te Danny

    2004-01-01

    This thesis describes the use of solution Nuclear Magnetic Resonance (NMR) spectroscopy and Molecular Dynamics (MD) simulations to study the mechanism of biomolecular recognition with two model systems: i) lipid II-binding lantibiotics (lanthionine-containing antibiotics) and ii) the human immunodef

  9. 77 FR 12476 - Drawbridge Operation Regulation; Curtis Creek, Baltimore, MD

    Science.gov (United States)

    2012-03-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Curtis Creek, Baltimore..., across Curtis Creek, mile 1.0, at Baltimore, MD. This deviation allows the bridge to operate on...

  10. 75 FR 54069 - Drawbridge Operation Regulations; Curtis Creek, Baltimore, MD

    Science.gov (United States)

    2010-09-03

    ... (75 FR 30747-30750). The rulemaking concerned eliminating the need for a bridge tender by allowing the... SECURITY Coast Guard 33 CFR Part 117 RIN 1625--AA09 Drawbridge Operation Regulations; Curtis Creek... Avenue Bridge, at mile 0.9, across Curtis Creek at Baltimore, MD. The requested change would have...

  11. 76 FR 9225 - Drawbridge Operation Regulation; Curtis Creek, Baltimore, MD

    Science.gov (United States)

    2011-02-17

    ... Regulations; Curtis Creek, Baltimore, MD'' in the Federal Register (74 FR 50707). The temporary deviation... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Curtis Creek, Baltimore... changing the drawbridge operation regulations of the Pennington Avenue Bridge, across Curtis Creek, mile...

  12. 75 FR 1705 - Drawbridge Operation Regulations; Curtis Creek, Baltimore, MD

    Science.gov (United States)

    2010-01-13

    ... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulations; Curtis Creek... operation of the I695 Bridge across Curtis Creek, mile 0.9, at Baltimore, MD. The deviation is necessary to... section of Curtis Creek and the bridge will not be able to open in the event of an emergency. Coast...

  13. 75 FR 50707 - Drawbridge Operation Regulation; Curtis Creek, Baltimore, MD

    Science.gov (United States)

    2010-08-17

    ... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Curtis Creek, Baltimore... operation of the Pennington Avenue Bridge, across Curtis Creek, mile 0.9, at Baltimore, MD. This deviation... vessels bound for the Coast Guard Yard at Curtis Bay, as well as a significant amount of commercial...

  14. A Digital Image Watermarking Algorithm Based on Clifford Algebra%基于Clifford代数的数字图像水印技术

    Institute of Scientific and Technical Information of China (English)

    李岩山

    2008-01-01

    本文首先讨论了Clifford代数的几何性质,探讨了3维Clifford代数空间中的几何积和投影运算,介绍了Clifford代数空间中的Fourier变换及其计算公式,进而研究了Clifford代数的存在性定理,并提出基于Clifford代数的存在性定理和Clifford-Fourier变换的数字图像水印嵌入算法.本文首次提出在Clifford代数空间中进行数字水印嵌入,实验论证了该算法的合理性,能较好的完成数字图像水印的嵌入.

  15. Addi Lahouari, Obadia Lionel (dir., Clifford Geertz. Interprétation et culture,Paris, Éditions des Archives contemporaines, 2010

    Directory of Open Access Journals (Sweden)

    Gilles Ferréol

    2012-06-01

    Full Text Available Cet ouvrage, structuré en onze chapitres eux-mêmes regroupés en trois grandes parties, entend présenter au lecteur français les principales facettes de l’œuvre de Clifford Geertz (1926-2006, l’une des figures les plus marquantes de l’anthropologie nord-américaine du XXe siècle.Dans un premier temps, sont exposés un certain nombre de positionnements d’ordres conceptuel et méthodologique. Lahouari Addi, tout d’abord, met en exergue le bien-fondé de la critique du positivisme et du structuro-fo...

  16. Archetypal Dreams: the Quantum Theater of Robert Wilson

    Science.gov (United States)

    Dietrich, Dawn Yvette

    1992-01-01

    My topic is situated within the larger framework of interdisciplinary study currently exploring the impact of new physics on various "soft" disciplines and sciences. Aligning myself with thinkers like Fritjof Capra and N. Katherine Hayles, who argue that quantum mechanics has brought about a new paradigm for the conceptualization of the physical world and our relation to it, I demonstrate that there is a connection, a kind of cultural translation, which relates contemporary physics to some avant-garde theater. Specifically, I center my research on American theater designer, Robert Wilson, who, recognized for his manipulation of the formal elements of stagecraft, owes much to the reconstruction of principles governing space and time. Taken further, I maintain that it is through the paradigm established from relativity theory and quantum mechanics that Wilson experiments with the elementary "forces" of the theater itself. This "restructuring" occurs through the dramatist's conceptions of space and time and the relation of those properties to both performers and spectators. Unlike most conventional theater, but as in many contemporary visual arts, time is manipulated through spatial metaphors and events take place in an amplified space--effecting a kind of dramatic space/time. Through manipulation of scale, the exploration of discontinuous time, and segregated stage zones, Wilson demonstrates that theater time is fluid and that it is not necessary for dramatic action to take place within the unified stage space delineated by the proscenium itself. Unlike conventional theater, where the stage is constructed with one perspective in mind, Wilson's theatrical mise-en-scene--a kind of new "perceptual field"--requires "imaginative watching"; that is, more perceptual discrimination from the audience who must sort and organize the visual material, highlighting the essential while reconfiguring the incidental. And this is where the myth is born, where archetypal dreams stir

  17. Abstract – IT Robert Lepage: anatomia di un regista

    Directory of Open Access Journals (Sweden)

    Giulio Boato

    2012-01-01

    Full Text Available Abstract – ITRobert Lepage è uno dei registi più rilevanti del panorama teatrale internazionale contemporaneo. L’articolo cerca di fornire una sintetica analisi della poetica del regista soffermandosi in particolar modo sulle nozioni di “montaggio” e di “immagine” al fine di definire il rapporto tra tecnologia e linguaggio in teatro. L’analisi di due spettacoli di Lepage presentati in occasione del Napoli Teatro Festival Italia(edizioni 2010 e 2011 alimenta la riflessione teorica che si snoda seguendo una metafora anatomica:analizzare separatamente (sezionando come il chirurgo le varie componenti narrative e formali del modus operandi lepagiano permette di comprendere più agevolmente l’architettura organica dell’insieme Abstract – FR Robert Lepage est un des metteurs en scène les plus remarqués de la scène théâtrale internationale contemporaine. L’article cherche à fournir une analyse synthétique de l’art poétique du metteur en scèneen se concentrant en particulier sur les notions de « montage » et « image » afin d’en définir le rapportentre technologie et langage au théâtre. L’analyse de deux spectacles de Lepage présentés pendant leNapoli Teatro Festival Italia (éditions 2010 et 2011 alimente la réflexion théorique qui se développeselon une métaphore anatomique : à la manière d'un chirurgien disséquant un corps, on analyseraséparément les différentes composantes narratives et formelles utilisées par Lepage afin de comprendreplus facilement l’architecture organique de l’ensemble. Abstract – EN Robert Lepage is one of the most significant directors on the international and contemporary theatrescene. The article tries to provide a synthetic analysis of the director’s work: focusing on the notions of “editing” and “image”, it defines the relation between technology and language in theatre. The analysis oftwo pieces of theatre presented at the Napoli Teatro Festival Italia

  18. Robert G Edwards and the Roman Catholic Church.

    Science.gov (United States)

    Benagiano, Giuseppe; Carrara, Sabina; Filippi, Valentina

    2011-06-01

    The Roman Catholic Church reacted negatively to the announcement that the Nobel Prize for Medicine had been awarded to Robert G Edwards. Thirty-three years ago, Cardinal Albino Luciani, on the eve of his election to become Pope, stated that, whereas progress is certainly a beautiful thing, mankind has not always benefited from progress. Catholic criticism has raised seven points: (i) God wants human life to begin through the 'conjugal act' and not artificially; (ii) artificial interventions at the beginning of human life are dangerous and ethically unacceptable; (iii) limits can be imposed even upon an individual's freedom to achieve a legitimate goal, such as having a child within marriage; (iv) the massive loss of preimplantation embryos characterizing IVF must be considered as a tragic loss of 'nascent' human persons; (v) Edwards bears a moral responsibility for all subsequent developments in assisted reproduction technology and for all 'abuses' made possible by IVF; (vi) there can be deleterious consequences for offspring of assisted reproduction technology; and (vii) Edwards' discovery did not eliminate the causes of infertility. This article elaborates from the Roman Catholic perspective on each of these points, some of which are found to be more substantial than others.

  19. Robert Lévy-Mandel (1923-2010)

    CERN Multimedia

    2010-01-01

    Former CERN Director Robert Lévy-Mandel passed away on 3 July at the age of 87.   After obtaining a diploma from the Institut polytechnique in Grenoble, in 1948 he started work at the CEA, and was involved in the development and construction of the Saclay institute's first particle accelerator, a Van de Graaff machine. From 1954 to 1957 he was responsible for the coordination, development and construction of the CEA’s Saturne synchrotron, which entered service in 1958. In 1963 he was appointed head of the Saturne Synchrotron Department. The team led the construction of the Gargamelle bubble chamber, which was installed at CERN, and made contributions to other major facilities, including the Big European Bubble Chamber (BEBC). In 1971 he was invited to come to Geneva by John Adams, who was in charge of the SPS accelerator project. With the start of the SPS project, CERN had two laboratories, one at Meyrin and one at Prévessin, each with its own Director General: ...

  20. On "Telepathic dreams?": an unpublished paper by Robert J. Stoller.

    Science.gov (United States)

    Mayer, E L

    2001-01-01

    In 1973 Robert Stoller wrote a paper on a series of dreams-his own and his patients'--that he reluctantly found himself calling "telepathic." He never submitted the paper for publication, though he returned to the topic of unconscious communication and telepathy with increasing fascination in the years before his death. Publication of Stoller's paper seems particularly opportune just now. In it he pleads for open-minded examination of data, however alien to current scientific belief those data seem. In the past, despite numerous published reports of possibly telepathic experiences in analysis, their investigation remained relatively one-sided, since a technical posture of anonymity with patients constrained analysts from revealing that a communication struck them as telepathic. This has limited what analysts have been able to learn about the information actually exchanged, how it was exchanged, and whether the communication was experienced as uncanny by the patient. Recent attention to the intersubjective nature of the analytic situation has led to a deemphasis of anonymity, opening freer dialogue that may facilitate the rigorous investigation Stoller calls for. Such investigation may further analytic understanding of unconscious mental function and communication in the clinical setting, and lend perspective to the growing body of carefully controlled experimental research on anomalous mental phenomena.

  1. Composition and adaptation in the life of Robert Schumann.

    Science.gov (United States)

    Graves, John S

    2005-01-01

    The composer Robert Schumann, who suffered from bipolar disorder, utilized his impressive musical and literary talents in attempts to adapt to multiple developmental traumas, separations, and losses as well as to the ongoing ravages of his mood disorder. By analyzing several of his Lieder, the author formulates and describes several defense mechanisms involved in these adaptations. These include identification with the lost object, the use of transitional objects and phenomena, sublimation, denial, minimization, idealization, playfulness, and the employment of healthy obsessive traits. Schumann utilized these adaptive defenses successfully for a brief period, thus coping with a difficult separation from his fiancée, Clara. Ultimately, however, he was unable to experience mature mourning regarding the deaths of several family members. The author, drawing on his extensive experience with treating bipolar individuals in outpatient settings, discusses some of the difficulties that many bipolar patients like Schumann have with mourning, including early developmental vulnerabilities to separation and loss, the disorganizing effects of bipolar mood episodes on cognition and self-coherence, the need to camouflage affects reminiscent of bipolar mood episodes, and experiencing these affects and mood episodes as traumatic reoccurrences. By studying the biographies of creative individuals such as Schumann, clinicians can expand their appreciation of their patients' adaptive capacities and thus assist them in restoring a sense of hope and vitality in their lives.

  2. Robert Dicke and the Naissance of Experimental Gravity Physics

    CERN Document Server

    Peebles, P J E

    2016-01-01

    The experimental study of gravity became much more active in the late 1950s, a change pronounced enough be termed the naissance of empirical gravity physics. A review of the developments since 1915, and up to the transition to what might be termed a normal and accepted part of physical science in the late 1960s, shows the importance of advances in technologies, here as in all branches of science. The role of contingency is illustrated by Robert Dicke's decision to change directions in mid-career, to lead a research group dedicated to the experimental study of gravity. One sees the power of nonempirical evidence, which led some in the 1950s to feel that general relativity theory is so logically sound as to be scarcely worth the testing, while Dicke and others argued that a poorly tested theory is only that, and that other nonempirical arguments, based on Mach's Principle and Dirac's Large Numbers, suggested it was worth looking for a better theory of gravity. I conclude by offering lessons from this history, s...

  3. Anthony (Tony) ROBERTS 5 March 1948 – 16 January 2008

    CERN Multimedia

    2008-01-01

    Tony came from Netherton, a small town near Birmingham in the English West Midlands, where he grew up with his parents, who ran the local grocery store, "T.W. Roberts & Son". This is where he regularly liked to return, firstly to help his parents and later simply to spend time with them. Here undoubtedly lie the roots of his organizational skills and his ability to get on so well with others. He soon became interested in the rapidly-developing field of computing and this was how he first came to CERN, during the summer of 1973, at the age of 25. He joined the DD Division as an operator responsible for the "calculators" of that time, where he stayed until 1979 when he joined the Fellows and Associates Section of Personnel Division. He participated in the general computerisation of the Administration and continued his career in the Records Office of HR Department, a post he held until the end. Though still very British – ob...

  4. Statistical ultrasonics: the influence of Robert F. Wagner

    Science.gov (United States)

    Insana, Michael F.

    2009-02-01

    An important ongoing question for higher education is how to successfully mentor the next generation of scientists and engineers. It has been my privilege to have been mentored by one of the best, Dr Robert F. Wagner and his colleagues at the CDRH/FDA during the mid 1980s. Bob introduced many of us in medical ultrasonics to statistical imaging techniques. These ideas continue to broadly influence studies on adaptive aperture management (beamforming, speckle suppression, compounding), tissue characterization (texture features, Rayleigh/Rician statistics, scatterer size and number density estimators), and fundamental questions about how limitations of the human eye-brain system for extracting information from textured images can motivate image processing. He adapted the classical techniques of signal detection theory to coherent imaging systems that, for the first time in ultrasonics, related common engineering metrics for image quality to task-based clinical performance. This talk summarizes my wonderfully-exciting three years with Bob as I watched him explore topics in statistical image analysis that formed a rational basis for many of the signal processing techniques used in commercial systems today. It is a story of an exciting time in medical ultrasonics, and of how a sparkling personality guided and motivated the development of junior scientists who flocked around him in admiration and amazement.

  5. Intervjuu American Wind Symphony Orchestra dirigendi Robert Austin Boudreau'ga = Interview with Mr. Robert Austin Boudreau, director of the American Wind Symphony Orchestra / Robert Austin Boudreau ; interv. Heli Ojamaa

    Index Scriptorium Estoniae

    Boudreau, Robert Austin

    2007-01-01

    11. IV 2007. a. tehtud telefoniintervjuu Robert A. Boudreau'ga, kellele arhitekt Louis I. Kahn disainis kontserdilaevad Point Counterpoint I (valmis 1961) ja Point Counterppoint II (kavandamist alustati 1966, valmis 1975). Louis I. Kahnist, koostööst arhitektiga ja laevadest. Selgitav kaaskiri arhitekt Heli Ojamaalt. Ill.: I laeva makett, II laeva joonised ja 4 värv. fotot

  6. A contribuição de Robert Wilhelm Bunsen e Gustav Robert Kirchhoff para a espectroscopia do século XIX

    OpenAIRE

    Pirolo, Marcelo

    2010-01-01

    Esta dissertação aborda o trabalho de dois pesquisadores alemães, Robert Wilhelm Bunsen e Gustav Robert Kirchhoff que, no século XIX, fizeram uma síntese dos procedimentos em utilizados em espectroscopia até o momento, modificando alguns métodos e auxiliando numa melhor compreensão e análise da luz emitida por materiais incandescentes. Após alguns experimentos desenvolvidos com Henry Roscoe sobre fotoquímica, Bunsen dedicou-se, juntamente com Kirchhoff, às análises espectrais. A espectroscopi...

  7. Apple fruit copper amine oxidase isoforms: peroxisomal MdAO1 prefers diamines as substrates, whereas extracellular MdAO2 exclusively utilizes monoamines.

    Science.gov (United States)

    Zarei, Adel; Trobacher, Christopher P; Cooke, Alison R; Meyers, Ashley J; Hall, J Christopher; Shelp, Barry J

    2015-01-01

    4-Aminobutyrate (GABA) accumulates in apple fruit during controlled atmosphere storage. A potential source of GABA is the polyamine putrescine, which can be oxidized via copper-containing amine oxidase (CuAO), resulting in the production 4-aminobutanal/Δ(1)-pyrroline, with the consumption of O2 and release of H2O2 and ammonia. Five putative CuAO genes (MdAO genes) were cloned from apple (Malus domestica Borkh. cv. Empire) fruit, and the deduced amino acid sequences found to contain the active sites typically conserved in CuAOs. Genes encoding two of these enzymes, MdAO1 and MdAO2, were highly expressed in apple fruit and selected for further analysis. Amino acid sequence analysis predicted the presence of a C-terminal peroxisomal targeting signal 1 tripeptide in MdAO1 and an N-terminal signal peptide and N-glycosylation site in MdAO2. Transient expression of green fluorescent fusion proteins in Arabidopsis protoplasts or onion epidermal cells revealed a peroxisomal localization for MdAO1 and an extracellular localization for MdAO2. The enzymatic activities of purified recombinant MdAO1 and MdAO2 were measured continuously as H2O2 production using a coupled reaction. MdAO1 did not use monoamines or polyamines and displayed high catalytic efficiency for 1,3-diaminopropane, putrescine and cadaverine, whereas MdAO2 exclusively utilized aliphatic and aromatic monoamines, including 2-phenylethylamine and tyramine. Together, these results indicate that MdAO1 may contribute to GABA production via putrescine oxidation in the peroxisome of apple fruit under controlled atmosphere conditions. MdAO2 seems to be involved in deamination of 2-phenylethylamine, which is a step in the biosynthesis of 2-phenylethanol, a contributor to fruit flavor and flower fragrance.

  8. Similarities Between The book of Songs and Robert Burns’Poetry

    Institute of Scientific and Technical Information of China (English)

    Zhou Juntao; Sun Gengmei

    2014-01-01

    As the first general collection of poems in China, The Book of Songs resembles the poems composed by the late 18th-century Scottish poet Robert Burns.From a new perspective, this paper explores the similarities between them.

  9. Kollaaž ja kontekst. Robert Rumase liiklusmärgid Tallinnas / Hanno Soans

    Index Scriptorium Estoniae

    Soans, Hanno, 1974-

    2004-01-01

    Sekkuv kunst. Poola kunstniku Robert Rumase (1966) rahvusvahelisest kunstiprojektist "Linnamanöövrid", Kai Kaljo videost "One way to see America", Krzysztof Wodicko "Kodutute projektsioonist" ja New York City Unioni väljaku ümberkorraldamisest

  10. Building the Speechwriter-Principal Relationship: Minority Leader Robert Michel Confronts His Ghost.

    Science.gov (United States)

    Medhurst, Martin J.; Dreibelbis, Gary C.

    1986-01-01

    Examines the interpersonal relationship between Robert Michel, Minority Leader of the House of Representatives, and William F. Gavin, his speechwriter, and how that relationship structures and defines the speechwriting process. (RS)

  11. Marian Roberts, Developing the Craft of Mediation: Reflections on Theory and Practice

    Directory of Open Access Journals (Sweden)

    Ghislaine M. Lanteigne

    2008-10-01

    Full Text Available In Developing the Craft of Mediation, Marian Roberts proposes that mediation is akin to a craft with its focus on learning from experience and from others working in the field to develop and master knowledge and skills.

  12. Professor Robert D. Putnam : sotsiaalse kapitali suurendamiseks tuleb luua sildu / Dagmar Lamp

    Index Scriptorium Estoniae

    Lamp, Dagmar

    2006-01-01

    26. mail 2006. a. Tallinnas Avatud Ühiskonna XI Foorumil esines Harvardi ülikooli professor Robert D. Putnam ettekandega sotsiaalsest, füüsilisest ja inimkapitalist ning sotsiaalsete võrgustike väärtusest

  13. Robert Bresson, Mariano Barroso, Paskaljevich, Mary Harron, David Trueba, Lars von Trier, Liv Ullmann, Zhang Yimou

    OpenAIRE

    La madriguera

    2000-01-01

    La madriguera (2000). Robert Bresson, Mariano Barroso, Paskaljevich, Mary Harron, David Trueba, Lars von Trier, Liv Ullmann, Zhang Yimou. Ediciones de intervención cultural S.L. http://hdl.handle.net/10251/41911. 80 80 33

  14. Kventin Tarantino + Robert Rodriges = Grainhaus, ili Kinonostalgija po-amerikanski / Andrei Sozinov

    Index Scriptorium Estoniae

    Sozinov, Andrei

    2007-01-01

    Filmiprojekt "Grindhouse" koosneb Robert Rodrigueze retroõudukast "Grindhouse : Õuduste planeet" ("Planet Terror") ja Quentin Tarantino 70-ndatest inspireeritud õudusfilmist "Surmakindel" ("Death Proof") : Ameerika Ühendriigid 2007

  15. Must, valge + hall : Sam Wagstaffi ja Robert Mapplethorpe'i portree / Madis Palm

    Index Scriptorium Estoniae

    Palm, Madis

    2008-01-01

    Dokumentaalfilm "Black, White & Gray: Sam Wagstaff and Robert Mapplethorpe" : autor ja režissöör James Crump : Ameerika Ühendriigid 2007. Filmi näidati filminädala "Art in America" raames Tallinnas

  16. MD 382: Beam Transfer Function and diffusion mechanisms

    CERN Document Server

    Tambasco, Claudia; Buffat, Xavier; Crouch, Matthew; Pieloni, Tatiana; Boccardi, Andrea; Fuchsberger, Kajetan; Gasior, Marek; Kotzian, Gerd; Lefevre, Thibaut; Pojer, Mirko; Salvachua Ferrando, Belen Maria; Solfaroli Camillocci, Matteo; Giachino, Rossano; CERN. Geneva. ATS Department

    2016-01-01

    The Beam Transfer Function (BTF) measurements have been previously tested in the LHC during MD block 1 and 2. Different machine configurations (i.e. energy, beam intensity, emittance etc...) have been tested to determine a safe set-up (excitation amplitude) of the system to be completely transparent to the beam (no emittance blow-up neither losses). The aim of this experiment in MD block 3 was to characterize the Stability Diagram (SD) in the presence of diffusion mechanisms induced by excited resonances due to beam-beam long range and Landau octupole interplay. During the experiment, BTF measurements have been acquired at flat top for different settings of Landau octupole current, different chromaticity values and transverse feedback gains. In this note the description of the experiment is presented together with some preliminary results.

  17. MD210 Note: Creation of Hollow Bunches in the PSB

    CERN Document Server

    Oeftiger, Adrian; Findlay, Alan James; Hancock, Steven; Rumolo, Giovanni; CERN. Geneva. ATS Department

    2016-01-01

    MD210 aims for the creation of longitudinally hollow bunches in the CERN PS Booster. The first three sessions have been carried out using the radial loop feedback system in order to drive the beam on a dipolar parametric resonance (instead of the phase loop). It has been found that the damping by the phase loop inhibits the excitation of the resonance to a major extent. The hollow distributions generated under these circumstances fail to reach a satisfying bunching factor. Nonetheless, proving the principally successful application of this technique to the PS Booster promises good results once the phase loop system supports trim functions. The approach, actions and detailed results of the first three MD sessions are presented in this paper.

  18. A Fast Attack Algorithm on the MD5 Hash Function

    Institute of Scientific and Technical Information of China (English)

    WANG Zhang-yi; ZHANG Huan-guo; QIN Zhong-ping; MENG Qing-shu

    2006-01-01

    The sufficient conditions for keeping desired differential path of MD5 was discussed. By analyzing the expanding of subtraction difference, differential characters of Boolean functions, and the differential characters of shift rotation, the sufficient conditions for keeping desired differential path could be obtained. From the differential characters of shift rotation, the lacked sufficient conditions were found. Then an algorithm that reduces the number of trials for finding collisions were presented. By restricting search space, search operation can be reduced tc 234 for the first block and 230 for the second block. The whole attack on the MD5 can be accomplished within 2C hours using a PC with 1.6 G CPU.

  19. Analytical applications of MD-FIA-optical detection systems

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    A brief introduction of recent research works in our laboratory concerning microdialysis(MD) based on optical detection combined with FIA is made in this mini-review. A biosensor system has been designed and realized the real time in vivo monitoring of some important clinic substances such as calcium, uric acid. The system has also been used to study the in vitro binding of drug-protein.

  20. MD 349: Impedance Localization with AC-dipole

    CERN Document Server

    Biancacci, Nicolo; Metral, Elias; Salvant, Benoit; Papotti, Giulia; Persson, Tobias Hakan Bjorn; Tomas Garcia, Rogelio; CERN. Geneva. ATS Department

    2016-01-01

    The purpose of this MD is to measure the distribution of the transverse impedance of the LHC by observing the phase advance variation with intensity between the machine BPMs. Four injected bunches with different intensities are excited with an AC dipole and the turn by turn data is acquired from the BPM system. Through post-processing analysis the phase variation along the machine is depicted and, from this information, first conclusions of the impedance distribution can be drawn.

  1. Summary of LHC MD:377: Schottky pick-up

    CERN Document Server

    Betz, Michael; Lefevre, Thibaut; CERN. Geneva. ATS Department

    2015-01-01

    The main objective of this MD was to record Schottky spectra under well known machine conditions. In summary, 7 set-points for the chromaticity and 8 for the emittance have been established and Schottky spectra have been recorded for each setting. The data will be used to benchmark and develop different fitting algorithms. This note presents the initial attempt of curve-fitting and discusses its shortcomings.

  2. Application of MD simulations to predict membrane properties of MOFs

    OpenAIRE

    Elda Adatoz; Seda Keskin

    2015-01-01

    Research Article Application of MD Simulations to Predict Membrane Properties of MOFs Elda Adatoz and Seda Keskin Chemical and Biological Engineering, Koc University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey Correspondence should be addressed to Seda Keskin; Received 22 May 2015; Accepted 13 July 2015 Academic Editor: Yanlin Song Copyright © 2015 E. Adatoz and S. Keskin. This is an open access article distributed under the Creative Commons A...

  3. MD 346: Summary of single bunch instability threshold measurements

    CERN Document Server

    Carver, Lee Robert; Metral, Elias; Salvant, Benoit; Levens, Tom; Buffat, Xavier; Pieloni, Tatiana; Tambasco, Claudia; Trad, Georges; CERN. Geneva. ATS Department

    2016-01-01

    The purpose of this MD is to measure the octupole current threshold to reach single-bunch stability in the LHC at flat top. Two bunches with dierent emittances are injected in the LHC in both B1 and B2 and the current in the Landau octupoles was progressively decreased until an instability developed. The measurements provide insight into the LHC impedance model by comparing them with the stabilizing octupole current predicted from DELPHI.

  4. PsychoNeuroImmunology Research Society's Robert Ader New Investigator Award.

    Science.gov (United States)

    2015-01-01

    Dr. Aric A. Prather, University of California, San Francisco (UCSF), is the recipient of the 2015 Robert Ader New Investigator Award and will present on his research at the PsychoNeuroImmunology Research Society (PNIRS) meeting, June 3–6, Seattle, WA. The Robert Ader New Investigator Award is presented to an outstanding new research scientist who has made exciting basic science or clinical contributions to the field of psychoneuroimmunology.

  5. Robert Klopstock and Franz Kafka--the friends from Tatranské Matliare (the High Tatras).

    Science.gov (United States)

    Mydlík, M; Derzsiová, K

    2007-01-01

    The paper summarises the accessible literature on the life and work of well-known American lung surgeon, Professor Dr. Med. Robert Klopstock, who was in the years 1920-1924 a friend Franz Kafka. Professor Klopstock was of Hungarian origin and he got acquainted with Franz Kafka at the end of the year 1920 in Tatranské Matliare (The High Tatras). They were both patients treated for lung tuberculosis. They became close friends and their mutual correspondence shows their real friendship. Robert Klopstock was present at Franz Kafka's death-bed on June 3, 1924 in Kierling, near Klosterneuburg, not far from Vienna. Robert Klopstock studied at Medical Faculties of the Universities in Budapest, Prague, Kiel and Berlin. After his graduation in 1933 in Berlin, he worked as a lung surgeon at various surgical clinics and departments in Budapest and Berlin. In 1936 Robert Klopstock together with his wife visited the High Tatras and Tatranské Matliare. In 1937 Robert Klopstock with his wife Gizela, a writer and a translator, who translated the first chapters of Franz Kafka's novel "Trial" into Hungarian language, went to United States of America. During his stay in U.S.A. Dr. Med. Robert Klopstock was very active as a lung surgeon and a scientist. He published 64 specialized scientific papers, mostly in American medical journals. He became Professor of Lung Surgery at Downstate Medical Centre in New York-Brooklyn. He died on June 15, 1972 in New York.

  6. The Fischer-Clifford Matrices of a Maximal Subgroup of the Sporadic Simple Group of Held(Dedicated to Professor Jamshid Moori on the occasion of his 60th birthday)

    Institute of Scientific and Technical Information of China (English)

    Faryad Ali

    2007-01-01

    The Held group He discovered by Held [10] is a sporadic simple group of order 4030387200 = 210.3a.52.73.17. The group He has 11 conjugacy classes of maximal subgroups as determined by Butler [5] and listed in the ATLAS. Held himself determined much of the local structure of He as well as the conjugacy classes of its elements. Thompson calculated the character table of He. In the present paper, we determine the Fischer Clifford matrices and hence compute the character table of the non-split extension 3.S7,which is a maximal subgroups of He of index 226560 using the technique of Fischer-Clifford matrices. Most of the computations were carried out with the aid of the computer algebra system GAP.

  7. Implementation of MD5 Fast Decryption Algorithm Based on Graphic Processing Unit%基于GPU的MD5高速解密算法的实现

    Institute of Scientific and Technical Information of China (English)

    乐德广; 常晋义; 刘祥南; 郭东辉

    2010-01-01

    MD5快速碰撞算法由于不支持逆向过程而无法在MD5密码攻击中得到实际应用.针对上述问题,通过分析基于图形处理单元(GPU)的MD5密码并行攻击算法原理,设计基于GPU的MD5高速解密算法,在此基础上实现一个MD5高速密码攻击系统.测试结果证明,该算法能有效加快MD5密码破解速度.

  8. Application of MD5 Algorithm in Database System%MD5算法在数据库系统中的应用

    Institute of Scientific and Technical Information of China (English)

    罗金涛

    2013-01-01

    数据加密是保护数据安全的重要手段,MD5是目前信息安全领域中使用比较广泛的加密算法,对MD5算法的原理进行了分析,并将MD5算法应用在数据库的登录验证过程中.

  9. Immunization against mucosal disease--bovine viral Diarrhea (MD-BVD) in calves applying lapinized vaccine against swine fever and a modified live virus of MD-BVD.

    Science.gov (United States)

    Haralambiev, H; Tsvetkov, P; Nikolov, A; Gaytandgieva, R

    1975-01-01

    Calves vaccinated with the modified strain C24V react by creating neutralizing antibodies in high titres and are resistent to infection while non-immunized calves manifest the clinical symptoms of MD-BVD. Calves, vaccinated with the lapinized strain "K" of the SF virus react by creating neutralizing antibodies in low titres against the vius of MD-BVD and manifest no apparent clinical symptoms after challenge with the virulent strain MD-BVD.

  10. 苹果抗性相关的谷胱甘肽转移酶基因MdGSTU1的生物信息学和表达分析%Bioinformatics and Expression Analysis ofMdGSTU1 Gene Encoding a Resistance-Related Glutathione Transferase from Apple

    Institute of Scientific and Technical Information of China (English)

    安秀红; 徐锴; 厉恩茂; 李壮; 李敏; 刘志; 程存刚

    2014-01-01

    Objective]MdGSTU1 gene was amplified from apple (Malus domestica Borkh) by RT-PCR. The transcriptional level ofMdGSTU1 in different tissues and under various treatments were determined to identify the resistant function ofMdGSTU1 gene.[Method]ESTs derived from suppression subtractive hybridization were blasted in NCBI and one EST fragment associated with apple ring rot was separated. This EST was found to be aGST gene by blasting in apple genome database. The primers were designed to amplify the ORF and 3'UTR of this gene; subsequently, the phylogenetic tree of the GST proteins, including MdGSTU1 and the GST family proteins fromArabidopsis, was constructed using the neighbor-joining (NJ) method of MEGA 5.0 software. In addition, the protein molecular weight and isoelectric point were predicted with DNAMAN software, and the full length amino acid sequences were analyzed between MdGSTU1 and the GSTU subfamily proteins ofArabidopsis. The expression level ofMdGSTU1 gene was detected in different tissues and under NaCl, PEG andAlternaria maliRoberts treatments using RT-PCR. Finally, the promoter ofMdGSTU1 gene was cloned and thecis-acting regulatory elements were analyzed through PlantCARE database.[Result]An apple gene encoding a putative glutathione transferase was obtained from a resistance-related EST to apple ring rot. The amplified sequence of this gene contains a 666 bp coding sequence, which encodes a protein of 221 amino acid residues. The calculated molecular mass is 25.41 kDa, with the isoelectric point 5.28. The phylogenetic relationship of this gene is closer with Arabidopsis tau type GST family, so it was namedMdGSTU1. Sequence analysis showed that MdGSTU1 protein contains conserved glutathione S-transferase N- and C-terminal domain. RT-PCR results showed that theMdGSTU1 gene was expressed in all tissues tested. However, its expression level varied with tissue type, and the highest transcriptional level occurred in root, compared with other tissues

  11. The Application Research of MD5 Encryption Algorithm in DCT Digital Watermarking

    Science.gov (United States)

    Xijin, Wang; Linxiu, Fan

    This article did the preliminary study of the application of algorithm for MD5 in the digital watermark. It proposed that copyright information will be encrypted using an algorithm MD5, and made rules for the second value image watermarks, through DCT algorithm that embeds an image by the carrier. The extraction algorithms can pick up the watermark and restore MD5 code.

  12. 76 FR 48884 - Stacey J. Webb, M.D.; Denial of Application

    Science.gov (United States)

    2011-08-09

    .... DEA, 2008 WL 4899525 (6th Cir. 2008). ``Moreover, because `past performance is the best predictor of.... Stodola, M.D., 74 FR 20727 (2009); Dale L. Taylor, M.D., 72 FR 30855 (2007); Andre DeSonia, M.D., 72...

  13. 76 FR 20034 - Calvin Ramsey, M.D.; Revocation of Registration

    Science.gov (United States)

    2011-04-11

    ... Enforcement Administration Calvin Ramsey, M.D.; Revocation of Registration On December 18, 2009, the Deputy... Show Cause to Calvin Ramsey, M.D. (Respondent), of Millington, Tennessee. The Show Cause Order proposed..., I order that DEA Certificate of Registration, AR7086689, issued to Calvin Ramsey, M.D., be, and...

  14. MD5算法在用户口令认证中的应用%The Application of MD5 Algorithm in The User Password Authentication

    Institute of Scientific and Technical Information of China (English)

    刘洪民; 印帮辉

    2014-01-01

    MD5算法是目前比较安全且易用的加密算法,其在密码领域有着举足轻重的地位.本文通过介绍MD5算法的特点及加密原理,分析了MD5算法在用户口令认证中的安全隐患,给出了用户口令认证应用中如何提高MD5算法安全性的措施和方法.

  15. Application of MD5 Encryption Algorithm Based on C# Technology%基于C#技术的MD5加密算法的应用

    Institute of Scientific and Technical Information of China (English)

    王倩丽

    2010-01-01

    在对Message-Digest Algorithm 5进行简要描述的同时,对MD5算法的原理作深入分析.运用MD5算法,采用目前流行的C#语言进行了具体研究,设计了MD5加密演示系统,经过测试该系统可以准确实现数据的MD5加密.

  16. SECURITY ANALYSIS ON MD5 AND ITS APPLICATION%MD5安全性分析及其应用

    Institute of Scientific and Technical Information of China (English)

    谭剑鸣; 徐建华; 汪崇华

    2002-01-01

    本文详细论述了MD5报文分解函数对文件签名的工作原理,剖析了MD5的安全性,针对具体的应用提出了使用MD5与RSA结合来解决数字签名的完整方案.文章的最后对MD5在PGP数字签名中的具体应用进行了分析讨论.

  17. Design and Implementation of MD5 with Salt%一种带随机数MD5算法的设计与实现

    Institute of Scientific and Technical Information of China (English)

    张丽香

    2013-01-01

    随着网络的迅速普及,信息加密技术的发展对保障网络安全有着重大的作用与意义.MD5是HASH算法,常用来对重要数据的进行存储,本文对MD5算法进行了简要描述,介绍了MD5的破解方式,并对带随机数MD5算法进行了描述,采用PHP对算法的使用进行实现.

  18. Roberts Bank: Ecological crucible of the Fraser River estuary

    Science.gov (United States)

    Sutherland, Terri F.; Elner, Robert W.; O'Neill, Jennifer D.

    2013-08-01

    Roberts Bank, part of the Fraser River delta system on Canada's Pacific coast, is a dynamic estuarine environment supporting important fisheries as well as internationally significant populations of migratory shorebirds. The 8000 ha bank environment comprises a complex of riparian boundaries, intertidal marshes, mud and sand flats, eelgrass meadows, macroalgae and biofilms. Anthropogenic developments (a ferry causeway in 1961 and a port causeway in 1969) have been responsible for changes in tidal flow patterns, tidal elevation, sediment transport and the net expansion of eelgrass beds. The goals of the present study were to (1) directly compare geotechnical properties spanning each side of the coalport causeway, and (2) enhance our understanding of the intercauseway ecosystem under a high-resolution sampling design. Sediment properties (grain size, porosity, organic content, and chlorophyll) and biological communities (eelgrass, macrofauna (0.5-1.0 mm) and meiofauna (0.063-0.5 mm)) were surveyed in 1997 at three stations outside the intercauseway area and three lateral transects spanning the intercauseway tidal flat at tidal heights representing three different habitats: biofilm, Zostera japonica, and Zostera marina. A fine-silt organic-rich porous deposit was observed on the shoreward north side of the coalport causeway relative to the south counterpart, suggesting that consolidation and erosion processes could likely not keep pace with the deposition of Fraser River silt. High chlorophyll levels were found in the protected shoreward northern border of the ferry causeway where fine sands dominate and higher water transparency exists, owing to the redirection of the silt-laden river plume by the coalport causeway. Principle Components Analysis revealed a positive relationship between these porous, organic-rich sediments and cumacean abundance in all regions where eelgrass was absent, including the north side of the coalport causeway. Further, a positive

  19. The Noncommutative Doplicher-Fredenhagen-Roberts-Amorim Space

    Directory of Open Access Journals (Sweden)

    Everton M.C. Abreu

    2010-10-01

    Full Text Available This work is an effort in order to compose a pedestrian review of the recently elaborated Doplicher, Fredenhagen, Roberts and Amorim (DFRA noncommutative (NC space which is a minimal extension of the DFR space. In this DRFA space, the object of noncommutativity (θ^{μν} is a variable of the NC system and has a canonical conjugate momentum. Namely, for instance, in NC quantum mechanics we will show that θ^{ij} (i,j=1,2,3 is an operator in Hilbert space and we will explore the consequences of this so-called ''operationalization''. The DFRA formalism is constructed in an extended space-time with independent degrees of freedom associated with the object of noncommutativity θμν. We will study the symmetry properties of an extended x+θ space-time, given by the group P', which has the Poincaré group P as a subgroup. The Noether formalism adapted to such extended x+θ (D=4+6 space-time is depicted. A consistent algebra involving the enlarged set of canonical operators is described, which permits one to construct theories that are dynamically invariant under the action of the rotation group. In this framework it is also possible to give dynamics to the NC operator sector, resulting in new features. A consistent classical mechanics formulation is analyzed in such a way that, under quantization, it furnishes a NC quantum theory with interesting results. The Dirac formalism for constrained Hamiltonian systems is considered and the object of noncommutativity θ^{ij} plays a fundamental role as an independent quantity. Next, we explain the dynamical spacetime symmetries in NC relativistic theories by using the DFRA algebra. It is also explained about the generalized Dirac equation issue, that the fermionic field depends not only on the ordinary coordinates but on θ^{μν} as well. The dynamical symmetry content of such fermionic theory is discussed, and we show that its action is invariant under P'. In the last part of this work we analyze the

  20. The Robert E. Hopkins Center for Optical Design and Engineering

    Science.gov (United States)

    Zavislan, James M.; Brown, Thomas G.

    2008-08-01

    preparation for these students. While this extracurricular experience is truly world-class, an integrated design experience defined within our academic program is increasingly necessary for those going on to professional careers in engineering. This paper describes the philosophy behind a revision to our undergraduate curriculum that integrates a design experience and describes the engineering laboratory that has been established to make it a reality. The laboratory and design center has been named in honor of Robert E. Hopkins, former director and professor, co-founder of Tropel corporation, and a lifelong devotee to engineering innovation.

  1. Obituary: Ralph Robert Robbins, Jr., 1938-2005

    Science.gov (United States)

    Hemenway, Mary Kay; Jefferys, William H.; Lambert, David L.

    2007-12-01

    Ralph Robert Robbins, Jr., died on 2 December 2005, in Kyle, Texas. His wife, Maria Elena Robbins, his daughters Julia Robbins Kelso and Stephanie Juarez Balles, his son Matthew Juarez, and five grandchildren survive him. Bob was on the faculty at the University of Texas from 1968 until his retirement in 2003. Bob was born in Wichita, Kansas, on 2 September 1938, the only son of Mildred and Ralph Robert Robbins, Sr. Guided by his high school's policy to provide a practical education to children of working-class parents, Bob began high school with a heavy dose of vocational courses until the results of a test indicated his special talent in mathematics. He was awarded a full scholarship to Yale University, graduating magna cum laude in mathematics in 1960. He won the Warner Prize in Mathematics at Yale that year. He received his Ph.D. in 1966 with a dissertation entitled "The Triplet Spectrum of Neutral Helium in Expanding Nebulae" from the University of California at Berkeley. His interest in college teaching was ignited at this time through summer teaching positions at San Mateo California Junior College and the Ohio State University. Following a year at Texas as a McDonald Observatory Post-doctoral Fellow, Bob taught for a year in the physics department of the University of Houston before returning to the University of Texas at Austin as an Assistant Professor of Astronomy in 1968. He was promoted to Associate Professor in 1972. Bob's research in the early 1970s on theoretical studies of helium was of vital importance to astronomers for over three decades. These pioneering calculations became vital to observational astronomers in the mid-1990s as interest grew in the primordial helium produced by the Big Bang. Bob's interest and influence in education was international in scope. In the summers 1968-1970, he was a government consultant in Mathematics in East Pakistan (now Bangladesh). He consulted with the government that was preparing a master plan for technical

  2. 改进MD5码增强网站密码安全性

    Institute of Scientific and Technical Information of China (English)

    张越; 陈跃; 刘林飞

    2009-01-01

    目的探讨改进MD5码,增强网络安全性.方法采用对用户密码进行加长、加强的二次加密,并对MD5码的算法进行修改,再使用MD5二次加密或多次加密.结果通过改进MD5码,用户密码安全性明显增强.结论改进MD5码,可以提高网站安全性.

  3. Nano-scratch study of molecular deposition (MD) films on silicon wafer using nanoindentation~1

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Experiment of the molecular deposition (MD) films with and without alkyl terminal de-posited on the silicon wafer were conducted by using nanoindentation. It was found that MD filmsand alkyl terminated MD films exhibit higher critical load (scratch resistance or adhesive strength)and lower coefficient of friction compared with the silicon substrate. Critical load (scratch resis-tance) increases with the number of layers, and coefficients of friction of those MD film with alkylterminal are still best for the same layer of MD film.

  4. StandsSIM-MD: a Management Driven forest SIMulator

    Energy Technology Data Exchange (ETDEWEB)

    Barreiro, S.; Rua, J.; Tomé, M.

    2016-07-01

    Aim of the study. The existing stand level forest simulators available in Portugal were not developed with the aim of including up-to-date model versions and were limited in terms of accounting for forest management. The simulators’ platform, sIMfLOR was recently created to implement different growth models with a common philosophy. The objective was developing one easily-updatable, user-friendly, forest management and climate change sensitive simulator capable of projecting growth for the main tree species in Portugal. Area of the study: Portugal. Material and methods: The new simulator was programmed in a modular form consisting of several modules. The growth module integrates different forest growth and yield models (empirical and process-based) for the main wood production tree species in Portugal (eucalypt, umbrella and maritime pines); whereas the management module drives the growth projections along the planning horizon according to a range of forest management approaches and climate (at present only available for eucalypt). Main results: The main result is the StandsSIM-MD Management Driven simulator that overcomes the limitations of the existing stand level simulators. It is a step forward when compared to the models currently available in the sIMfLOR platform covering more tree species, stand structures and stand compositions. It is focused on end-users and it is based on similar concepts regarding the generation of required inputs and generated outputs. Research highlights: Forest Management Driven simulations approach. Multiple Prescriptions-Per-Stand functionality. StandsSIM-MD can be used to support landowners decisions on stand forest management. StandsSIM-MD simulations at regional level can be combined with optimization routines. (Author)

  5. A Secure Hash Function MD-192 With Modified Message Expansion

    CERN Document Server

    Tiwari, Harshvardhan

    2010-01-01

    Cryptographic hash functions play a central role in cryptography. Hash functions were introduced in cryptology to provide message integrity and authentication. MD5, SHA1 and RIPEMD are among the most commonly used message digest algorithm. Recently proposed attacks on well known and widely used hash functions motivate a design of new stronger hash function. In this paper a new approach is presented that produces 192 bit message digest and uses a modified message expansion mechanism which generates more bit difference in each working variable to make the algorithm more secure. This hash function is collision resistant and assures a good compression and preimage resistance.

  6. EDITORIAL: Roberts Prize for the best paper published in 2012 Roberts Prize for the best paper published in 2012

    Science.gov (United States)

    Cherry, Simon; Ruffle, Jon

    2013-08-01

    The publishers of Physics in Medicine and Biology (PMB), IOP Publishing, in association with the journal owners, the Institute of Physics and Engineering in Medicine (IPEM), jointly award the Roberts prize for the best paper published in PMB during the previous year. The procedure for deciding the winner is a two-stage process. First, a shortlist of contenders is drawn up based on those papers that had the best referees' quality assessments, with a further quality check and endorsement by the Editorial Board. The papers on the shortlist are then reviewed by a specially convened IPEM committee consisting of members with fellow status. This committee reads the shortlisted papers and selects the winner. We have much pleasure in advising readers that the Roberts Prize for the best paper published in 2012 is awarded to Michel Defrise, Ahmadreza Rezaei and Johan Nuyts from the Vrije Universiteit Brussels and the Katholieke Universiteit Leuven, Belgium for their breakthrough paper that describes how the information needed for attenuation correction in PET imaging can be extracted, to within a constant, from time-of-flight emission data: Time-of-flight PET data determine the attenuation sinogram up to a constant 2012 Phys. Med. Biol. 57 885 Michel Defrise1, Ahmadreza Rezaei2 and Johan Nuyts2 1Department of Nuclear Medicine, Vrije Universiteit Brussel, B-1090 Brussels, Belgium 2Department of Nuclear Medicine, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium This paper represents an important and timely contribution to the literature as time-of-flight PET scanners are now offered by several manufacturers. In hybrid PET/CT scanners, the PET attenuation correction, necessary for quantitative reconstruction of the tracer distribution, can be derived directly from the CT data. Sometimes, however, the PET and CT scans may be poorly aligned due to patient motion and other approaches are needed. In addition, hybrid PET/MRI scanners also, have been developed recently, and in

  7. 正交模上Clifford代数的支配权%Dominant Weights of the Clifford Algebra over an Orthogonal Module

    Institute of Scientific and Technical Information of China (English)

    何军华; 谭友军

    2011-01-01

    This paper deals with dominant weights of the Clifford algebra C(V) over an orthogonal g-module V, where the g-module C(V) is a multiple of Kostant's spin module Spin(V). Let △(V) be the set of nonzero weights of V. The half-sum of any positive convex half of △(V) is shown to be a dominant weight of C(V). Conversely, if a half-sum is a highest weight of C(V) with multiplicity 2mV(O)+dim V/2, then it is given by a positive convex half of △(V).%研究了正交g-模V上的Clifford代数C(V)的支配权,其中G-模C(V)是Kostant给出的旋模Spin(V)的倍数.设△(V)是V的非零权组成的集合.证明了△(V)任一正凸半的半和总是C(V)的一个支配权.反之,如果某一个半和是C(V)的重数为2 mV(O)+dim V/2 的最高权,那么该半和一定是△(V)的某个正凸半的半和.

  8. 散列算法MD5和SHA-1的比较%Comparison between MD5 and SHA-1

    Institute of Scientific and Technical Information of China (English)

    王泽; 曹莉莎

    2016-01-01

    MD5 and SHA-1 are the two known Hash Algorithm which are widely applied in information security, they are both developed from MD4.This paper introduces their algorithm logic in detail, compares them though simulation experiment ,soft-ware testing, etc. Finally, it draw a conclusion:The SHA-1 algorithm is more secure than the MD5 algorithm, but in the same hardware, SHA-1 is slower than MD5.%MD5和SHA-1是两个已知的广泛应用于信息安全的散列算法,均由MD4发展而来。详细介绍了它们的算法逻辑,并通过模拟实验、软件测试等方式对其在各个方面进行比较,最终得出结论:SHA-1算法比MD5算法的安全性更高,但在同一硬件上,SHA-1比MD5运行的要慢。

  9. MD5加密算法的研究及应用%Research and application of MD5 encryption algorithm

    Institute of Scientific and Technical Information of China (English)

    魏晓玲

    2010-01-01

    针对当前网站建设和系统开发中用户信息等重要数据的安全问题,提出了一种MD5加密算法,可以对用户密码进行加密.MD5加密算法是一种比较常用的单向加密算法,通过对该算法的深入研究,介绍了MD5算法的特性、算法原理及其算法流程,并给出MD5算法在一个具体系统中的实际应用,得出MD5算法是一种非常安全和易用的加密算法.

  10. Methanol adsorption studies of electrified ACF by MD simulations

    Institute of Scientific and Technical Information of China (English)

    LIANG Shiqiang; XU Jingzhong

    2004-01-01

    In order to clarify whether static electricity can impose a control on physical adsorption of polar adsorbates, MD simulations were carried out to study the adsorption/desorption behavior of methanol in the nanopores of electrified activated carbon fiber (ACF). Some special phenomena were observed from the MD simulations for methanol adsorption in a mesopore of electrified ACF. For example it takes a shorter time for the adsorbates to reach the adsorption sites on the mesopore wall, the liquid-like methanol is highly condensed, the methanol molecules have a unique distribution of space orientation, and the total energy of equilibrium state dropped a lot. These phenomena indicate the static electricity reinforced the interaction between the polar methanol and the electrified ACF, so that the intensity, stability and regularity of adsorption were increased, and thus we predict that the adsorption capacity will be increased and the adsorption process will be accelerated. When adsorption equilibrium was reached at room temperature, eliminated the electric charges and heated the system, the desorption tendency was evidently observed from our simulations at 60℃ or so.

  11. MD1878: Operation with primary collimators at tighter settings

    CERN Document Server

    Mirarchi, Daniele; Biancacci, Nicolo; Bruce, Roderik; Buffat, Xavier; Carver, Lee Robert; Fiascaris, Maria; Mereghetti, Alessio; Redaelli, Stefano; Rossi, Roberto; Salvachua Ferrando, Belen Maria; Soderen, Martin; Trad, Georges

    2017-01-01

    Primary (TCP) collimators of the betatron cleaning insertion determine the betatron cut of the LHC beam. During the 2016 they were set at 5.5 nominal beam sigmas at 6.5 TeV (i.e. by using a normalized emittance " = 3:5 m is used). Reducing their settings is a possible way to push the at the LHC, which depends on the collimation hierarchy. This study aims at understanding possible limitations of operating the LHC with tighter settings of the primary collimators. This is a crucial input to the choice of operational conguration in terms of at the LHC as well as at the HL-LHC. This study follows a successful MD done in block 3 to understand limitations from TCP impedance [1]. The outcome of this MD can also have an impact for the design of the FCC collimation system, which is currently based on the present TCP gaps. Studies of beam stability as a function of octupole current, transverse feedback gain (ADT) and transverse separation at the IPs were also carried out.

  12. MD modeling of defects in Fe and their interactions

    Science.gov (United States)

    Marian, Jaime; Wirth, Brian D.; Schäublin, Robin; Odette, G. R.; Perlado, J. Manuel

    2003-12-01

    Ferritic/martensitic steels considered as candidate first-wall materials for fusion reactors experience significant radiation hardening at temperatures below ˜400 °C. A number of experimental studies in ferritic alloys, performed at higher temperatures, have shown the existence of large interstitial loops with Burgers vector {1}/{2} and in the bulk, which may provide a significant contribution to the hardening caused during irradiation at lower temperatures. Hardening arises from a high number density of loops, voids and small precipitates, which pin system dislocations, impeding their free glide. In this work, we review the nature of the different interstitial dislocation loops observed in α-Fe and ferritic materials, assess the effect of substitutional impurities on migrating {1}/{2} clusters, and apply atomistic modeling to investigate the mechanisms of formation and growth of loops from smaller cascade-produced {1}/{2} clusters. The proposed mechanism reconciles experimental observations with continuum elasticity theory and recent MD modeling of defect production in displacement cascades. In addition, the interaction of screw dislocations, known to control the low-temperature plastic response of b.c.c. materials to external stress, with dislocation loops is investigated with MD, where the main physical mechanisms are identified, cutting angles estimated and a first-order estimation of the induced hardening is provided.

  13. MD1878: Operation with primary collimators at tighter settings

    CERN Document Server

    Mirarchi, Daniele; Biancacci, Nicolo; Bruce, Roderik; Buffat, Xavier; Carver, Lee Robert; Fiascaris, Maria; Mereghetti, Alessio; Redaelli, Stefano; Rossi, Roberto; Salvachua Ferrando, Belen Maria; Soderen, Martin; Trad, Georges; CERN. Geneva. ATS Department

    2017-01-01

    Primary (TCP) collimators of the betatron cleaning insertion determine the betatron cut of the LHC beam. During the 2016 they were set at 5.5 nominal beam sigmas at 6.5 TeV (i.e. by using a normalized emittance ε* = 3:5 μm is used). Reducing their settings is a possible way to push the ß* at the LHC, which depends on the collimation hierarchy. This study aims at understanding possible limitations of operating the LHC with tighter settings of the primary collimators. This is a crucial input to the choice of operational configuration in terms of ß* at the LHC as well as at the HL-LHC. This study follows a successful MD done in block 3 to understand limitations from TCP impedance [1]. The outcome of this MD can also have an impact for the design of the FCC collimation system, which is currently based on the present TCP gaps. Studies of beam stability as a function of octupole current, transverse feedback gain (ADT) and transverse separation at the IPs were also carried out.

  14. EDITORIAL: Roberts Prize for the best paper published in 2010 Roberts Prize for the best paper published in 2010

    Science.gov (United States)

    Webb, Steve; Harris, Simon

    2011-08-01

    The publishers of Physics in Medicine and Biology (PMB), IOP Publishing, in association with the journal owners, the Institute of Physics and Engineering in Medicine (IPEM), jointly award an annual prize for the best paper published in PMB during the previous year. The procedure for deciding the winner has been made as thorough as possible, to try to ensure that an outstanding paper wins the prize. We started off with a shortlist of the 10 research papers published in 2010 which were rated the best based on the referees' quality assessments. Following the submission of a short 'case for winning' document by each of the shortlisted authors, an IPEM college of jurors of the status of FIPEM assessed and rated these 10 papers in order to choose a winner, which was then endorsed by the Editorial Board. We have much pleasure in advising readers that the Roberts Prize for the best paper published in 2010 is awarded to M M Paulides et al from Erasmus MC, Rotterdam, The Netherlands, for their paper on hyperthermia treatment: The clinical feasibility of deep hyperthermia treatment in the head and neck: new challenges for positioning and temperature measurement M M Paulides, J F Bakker, M Linthorst, J van der Zee, Z Rijnen, E Neufeld, P M T Pattynama, P P Jansen, P C Levendag and G C van Rhoon 2010 Phys. Med. Biol. 55 2465 Our congratulations go to these authors. Of course all of the shortlisted papers were of great merit, and the full top-10 is listed below (in alphabetical order). Steve Webb Editor-in-Chief Simon Harris Publisher References Alonzo-Proulx O, Packard N, Boone J M, Al-Mayah A, Brock K K, Shen S Z and Yaffe M J 2010 Validation of a method for measuring the volumetric breast density from digital mammograms Phys. Med. Biol. 55 3027 Bian J, Siewerdsen J H, Han X, Sidky E Y, Prince J L, Pelizzari C A and Pan X 2010 Evaluation of sparse-view reconstruction from flat-panel-detector cone-beam CT Phys. Med. Biol. 55 6575 Brun M-A, Formanek F, Yasuda A, Sekine M, Ando N

  15. EDITORIAL: Roberts Prize for the best paper published in 2009 Roberts Prize for the best paper published in 2009

    Science.gov (United States)

    Webb, Steve; Harris, Simon

    2010-07-01

    The publishers of Physics in Medicine and Biology (PMB), IOP Publishing, in association with the journal owners, the Institute of Physics and Engineering in Medicine (IPEM), jointly award an annual prize for the best paper published in PMB during the previous year. The procedure for deciding the winner has been made as thorough as possible, to try to ensure that an outstanding paper wins the prize. We started off with a shortlist of the 10 research papers published in 2009 which were rated the best based on the referees' quality assessments. Following the submission of a short 'case for winning' document by each of the shortlisted authors, an IPEM college of jurors of the status of FIPEM assessed and rated these 10 papers in order to choose a winner, which was then endorsed by the Editorial Board. We have a clear, and very worthy, winner this year. We have much pleasure in advising readers that the 2009 Roberts Prize is awarded to E Z Zhang et al from University College London for their paper on photoacoustic tomography. In vivo high resolution 3D photoacoustic imaging of superficial vascular anatomy E Z Zhang, J G Laufer, R B Pedley and P C Beard 2009 Phys. Med. Biol. 54 1035-46 Our congratulations go to these authors. Of course all of the shortlisted papers were of great merit, and the full top-10 is listed below (in alphabetical order). Steve Webb Editor-in-Chief Simon Harris Publisher References Cheng Y-C N , Neelavalli J and Haacke E M 2009 Limitations of calculating field distributions and magnetic susceptibilities in MRI using a Fourier based method Phys. Med. Biol. 54 1169-89 Cho S, Ahn S, Li Q and Leahy R M 2009 Exact and approximate Fourier rebinning of PET data from time-of-flight to non time-of-flight 2009 Phys. Med. Biol. 54 467-84 Davidson S R H, Weersink R A, Haider M A, Gertner M R, Bogaards A, Giewercer D, Scherz A, Sherar M D, Elhilali M, Chin J L, Trachtenberg J and Wilson B C 2009 Treatment planning and dose analysis for interstitial

  16. Robert H. Pudenz (1911-1998) and Ventriculoatrial Shunt: Historical Perspective.

    Science.gov (United States)

    Konar, Subhas K; Maiti, Tanmoy K; Bir, Shyamal C; Kalakoti, Piyush; Nanda, Anil

    2015-11-01

    Robert H. Pudenz was a renowned neurosurgeon in North America in the 20th century, famous for his contributions in the evolution of the shunt valve and ventriculoatrial shunt surgery. With his innovative idea and help from Heyer, in 1955, he demonstrated that a venous catheter worked best when in the right atrium and that the slit valve should be located at the most distal portion of the shunt system to prevent retrograde filling and thrombosis. He also contributed to various experimental studies on the brain, especially the electrical response of different neural structures. This historical vignette focuses on the work of Robert Pudenz and the evolution of the ventriculoatrial shunt.

  17. La Corte Roberts e la questione della “preghiera municipale”

    Directory of Open Access Journals (Sweden)

    Adelaide Madera

    2017-02-01

     The Roberts Court and the “municipal prayer” Abstract: In the USA, few topics are more divisive than the government’s use of religious expressions and symbols. The Supreme Court has tried to find a balance between the Establishment Clause of the U.S. Constitution and the inclusion of religious expressions in government activities. In Town of Greece v. Galloway, the Roberts Court upheld a town’s practice of opening board meetings with prayers from invited speakers. The essay critically examines the various opinions in the case, and looks at where this decision suggests the Establishment Clause doctrine is moving award.

  18. Das Fortbildungsangebot der Bibliothek des Robert Koch-Instituts: Dienstleistung im Publikationsprozess

    Directory of Open Access Journals (Sweden)

    Senst, Henriette

    2013-12-01

    Full Text Available [english] Robert Koch-Institute’s scientists are supported during the publishing process in different ways. Relating to frequently asked questions the library offers trainings, which are integrated in the training program of the institute.How does a good literature research work? How do I manage my literature and how do I cite correctly? What do I have to consider during the publishing process? These and other questions are answered in trainings on literature research, managing bibliographies with EndNote and “Scientific Publishing in the Robert Koch-Institute” which take place regularly.

  19. Neoromicia Roberts, 1926 (Mammalia Vespertilionidae: correction of gender and etymology

    Directory of Open Access Journals (Sweden)

    Marco Riccucci

    2009-02-01

    Full Text Available Riassunto Neoromicia Roberts, 1926 (Mammalia, Verspetilionidae: Correzione del genere grammaticale ed etimologia Neoromicia Roberts, 1926, sinora considerato erroneamente di genere maschile, è in realtà femminile. La sua etimologia deriva quasi certamente dal Greco antico "ρóμιζα", corrispondente al latino "Rumex" (sorta di giavellotto, per la presenza di un cospicuo sperone calcaneale in Romicia calcarata, specie tipo del genere.

  20. VizieR Online Data Catalog: USNO Saturnian observations 1974-1998 (Robert+, 2016)

    Science.gov (United States)

    Robert, V.; Pascu, D.; Lainey, V.; Arlot, J.-E.; de Cuyper, J.-P.; Dehant, V.; Thuillot, W.

    2016-10-01

    Astrometric and measured data of Saturn, Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion and Iapetus, taken with the U.S. Naval Observatory 26-inch refractor from 1974 to 1998. Astrometric (RA,DEC) positions are geocentric observed positions reduced from stars and refer to the ICRF. They were corrected for all instrumental and spherical effects, except for the light time propagation. Raw data with (x,y) positions of the stars and satellites are available on demand (Vincent Robert, vincent.robert(at)obspm.fr). (9 data files).

  1. Analysis of The Shakers’Influence on Robert in A Day No Pigs Would Die

    Institute of Scientific and Technical Information of China (English)

    王亚敏

    2015-01-01

    A Day No Pigs W ould Die is Robert Newton Peck's semi-autobiographical tale of a boy's struggle with adolescence and the responsibility of manhood. Peck's parents were farmers and members of the Shaker church,and they taught Peck the Shaker Way. The Shaker religion plays a large part in Peck's writing, and the mood of many Shaker tenets permeates through the novel. The purpose of this paper is to analyze the hero Robert how to form a healthy and positive life attitude under the influence of his father, Haven Peck, who believes in the shakers.

  2. Robert Lacoste's the darker side practical applications for electronic design concepts from circuit cellar

    CERN Document Server

    Lacoste, Robert

    2009-01-01

    Robert Lacoste's The Darker Side column has quickly become a must read among Circuit Cellar devotees. His column provides readers with succinct theoretical concepts and practical applications on topics as far reaching as digital modulation to antenna basics. Difficult concepts are demystified as Robert shines a light on complex topics within electronic design.This book collects sixteen Darker Side articles that have been enriched with new, exclusive content from the author. An intro into The Darker Side will give examples of material that can enhance and optimize the way you design. A

  3. The improvement of cryptography MD5 algorithm%密码学中信息摘要算法MD5的改进

    Institute of Scientific and Technical Information of China (English)

    林平

    2011-01-01

    MD5算法的基础上,针对MD5算法密文是一个32位16进制字符来表示值的特征,提出MD5改进算法,首先采用替换加密算法Md5Replace加密MD5算法密文,隐藏MD5算法密文的特征;再选定替换加密密文中某一位置插入由随机函数算法Md5Random产生定长的字符串得到最后的密文,改变了替换加密密文位数,隐藏了替换加密算法替换规律.在不改变算法效率的前提下,提高算法安全强度.

  4. MD5碰撞攻击的差分路径构建%Constructing Differential Path in MD5 Collision Attack

    Institute of Scientific and Technical Information of China (English)

    刘凡保; 谢涛

    2009-01-01

    著名的杂凑算法MD5是MD4的增强版本,由Ronald L.Rivest在1991年设计.MD5广泛应用于口令变换、数据完整性、数字证书等领域.近年最具影响的MD5安全性的分析结果是王小云首次发现的MD5碰撞.之后,MD5碰撞攻击的改进主要集中在提高碰撞对搜索的性能.基于新的不同于王小云的明文差分构成的MD5碰撞,介绍差分路径的构建方法,并给出一条差分路径以及碰撞对数据.

  5. Luminosity Anti-leveling with Crossing Angle (MD 1669)

    CERN Document Server

    Gorzawski, Arkadiusz; Ponce, Laurette; Salvachua Ferrando, Belen Maria; Wenninger, Jorg; CERN. Geneva. ATS Department

    2016-01-01

    A significant fraction of the LHC luminosity ($\\sim$30\\% in 2016) is lost due to the presence (and necessity) of the crossing angles at the IPs. At the LHC the crossing angle is typically set to a value that provides sufficient separation of the beams at the start of fills for the peak bunch intensities. As the bunch intensity decays during a fill, it is possible to reduce the crossing angle and recover some luminosity. A smooth crossing angle reduction procedure must be developed to take advantage of this option during stable beam operation. During this MD a smooth procedure for luminosity leveling with crossing angle was tested. It was demonstrated that the orbit was well controlled, beam losses were low and the offset leveled experiments ALICE and LHCb were not affected by crossing angle leveling in ATLAS and CMS.

  6. The Achromatic Telescopic Squeezing (ATS) MD part II

    CERN Document Server

    Fartoukh, S; De Maria, R; Miyamoto, R; Mueller, G; Ponce, L; Redaelli, S; Strzelczyk, M; Tomas, R; Vanbavinckhove, G; Wenninger, J; Albert, M; Giachino, R; Giovannozzi, M; Goddard, B; Hagen, P; Hofle, W; Kain, V; Macpherson, A; Normann, L; Papotti, G; Steinhagen, R; Valuch, D; wollman, D

    2011-01-01

    This note describes the results obtained during the second so-called ATS MD where the record of Beta* was reached at IP1 and IP5 with a “pre-squeezed” Beta* of 1.2 m, while perfectly controlling the chromatic aberrations induced (non-linear chromaticity, off-momentum Beta-beating). Then, the ATLAS insertion was squeezed further down to the target of the former LHC Upgrade Project (Phase I), that is to Beta* = 30 cm, using the Achromatic Telescopic Squeezing techniques. In view of this major achievement, the bar is fixed even higher for the next ATS MD’s, with an ultimate Beta* targeted to 10 cm for the two high-luminosity insertions ATLAS and CMS.

  7. Emily Dickinson's ophthalmic consultation with Henry Willard Williams, MD.

    Science.gov (United States)

    Blanchard, Donald L

    2012-12-01

    Emily Dickinson is one of America's premier poets of the 19th century. Henry Willard Williams, MD, was one of the very first physicians to limit his practice to ophthalmology and was the established leader in his field in Boston, Massachusetts. They met during the time of the Civil War, when Emily consulted him about her ophthalmic disorder. No records of the diagnosis survive. Photophobia, aching eyes, and a restriction in her ability to work up close were her main symptoms. Iritis, exotropia, or psychiatric problems are the most frequent diagnoses offered to explain her difficulties. Rather than attempt a definitive conclusion, this article will offer an additional possibility that Dr Williams likely considered (ie, hysterical hyperaesthesia of the retina). This was a common diagnosis at that time, although it has currently faded from use.

  8. A workshop on leadership for MD/PhD students

    Directory of Open Access Journals (Sweden)

    Mark D. Cannon

    2011-08-01

    Full Text Available Success in academic medicine requires scientific and clinical aptitude and the ability to lead a team effectively. Although combined MD/PhD training programs invest considerably in the former, they often do not provide structured educational opportunities in leadership, especially as applied to investigative medicine. To fill a critical knowledge gap in physician-scientist training, the Vanderbilt Medical Scientist Training Program (MSTP developed a biennial two-day workshop in investigative leadership. MSTP students worked in partnership with content experts to develop a case-based curriculum and deliver the material. In its initial three offerings in 2006, 2008, and 2010, the workshop was judged by MSTP student attendees to be highly effective. The Vanderbilt MSTP Leadership Workshop offers a blueprint for collaborative student-faculty interactions in curriculum design and a new educational modality for physician-scientist training.

  9. 报文摘要算法MD5的分析与改进

    Institute of Scientific and Technical Information of China (English)

    汪勋亮; 赵春霞; 郭剑辉

    2014-01-01

    MD5算法在数据加密方面有着广泛的应用,但是它无法抵御查字典攻击和差分等攻击。为此本文介绍了报文算法MD5和Base64算法,以及在两种算法的基础上提出了MD5的改进算法,以应对以上被攻击的缺陷。%MD5 encryption algorithm in the data has a wide range of applications,but it can not resist dictionary attacks and differential attacks.This paper introduces the MD5 message digest algorithm and Base64 algorithm,and two algorithms based on the proposed the improved MD5 algorithm,the effect is to deal with the above attack.

  10. Leonard F. Peltier, MD, PhD, 1920-2003.

    Science.gov (United States)

    Reckling, Frederick W; Lo Vecchio, Janolyn G; Reckling, JoAnn B

    2004-05-01

    Leonard F. Peltier, MD, PhD, was an orthopaedic surgeon, academician, administrator, laboratory investigator, historian, and mentor. His career spanned nearly six decades, beginning with graduate education at the University of Minnesota (UM) under the auspices of Owen H. Wangensteen, MD, PhD. In addition to obtaining a PhD in physiology in the UM Graduate School, he completed general and orthopaedic surgery residencies and attained board certification in each specialty. He served in the US Army Occupation Force Medical Corps in Germany just after World War II. In 1957, at 37 years old, he assumed the chairmanship of the orthopaedic training program at the University of Kansas. In 1971, he couldn't resist the opportunity to become one of the founding members of the "start-up" University of Arizona College of Medicine, accepting an appointment as chair of the new orthopaedic training program, where he remained until his retirement in 1990. He took clinical problems to the laboratory, and made important scientific contributions, particularly in the area of fat embolism and in using calcium sulfate (plaster of Paris) to fill bone defects. He served on governing boards of national professional organizations and presided over the American Association for the Surgery of Trauma from 1980-1981. Throughout his career, he was fascinated by, and published extensively in, the history of medicine arena. Known fondly as "the professor" to many of his residents and colleagues, he had a pragmatic, honest, upbeat, and often humorous approach to life's challenges, valuing personal integrity above other virtues. He explored various eclectic interests far beyond his professional contributions while maintaining his family as a central priority. With his exemplary productivity and interests in the surgical and laboratory sciences, history of medicine, appreciation of fine arts, and perceptive and effective interactions with family, friends, patients, and colleagues, the memory of Leonard

  11. The MD5 Technical Analysis and Improvement Measures%MD5技术解析及改进措施

    Institute of Scientific and Technical Information of China (English)

    窦立莉

    2010-01-01

    随着网络的迅速普及,信息加密技术的发展对保障网络安全有着重大的作用与意义.本文对MD5 这种单向加密算法进行了简要描述,对MD5 算法的原理进行了深入分析,并提出了MD5 码的多种改进措施.

  12. Alternatively spliced myeloid differentiation protein-2 (MD-2s) protein inhibits TLR4-mediated lung inflammation

    Science.gov (United States)

    Tumurkhuu, Gantsetseg; Dagvadorj, Jargalsaikhan; Jones, Heather D.; Chen, Shuang; Shimada, Kenichi; Crother, Timothy R.; Arditi, Moshe

    2014-01-01

    We previously identified a novel alternatively spliced isoform of human myeloid differentiation protein-2 (MD-2s) that competitively inhibits binding of MD-2 to TLR4 in vitro. Here we investigated the protective role of MD-2s in LPS-induced acute lung injury by delivering intracheally (i.t.) an adenovirus construct that expressed MD-2s (Ad-MD-2s). After adenovirus-mediated gene transfer, MD-2s was strongly expressed in lung epithelial cells and readily detected in bronchoalveolar lavage fluid (BALF). Compared to Ad-EV control mice, Ad-MD-2s delivery resulted in significantly less LPS-induced inflammation in the lungs, including less protein leakage, cell recruitment, and expression of proinflammatory cytokines and chemokines, such as IL-6, KC, and MIP-2. BALF from Ad-MD-2s mice transferred into lungs of naive mice before i.t. LPS challenge diminished pro-inflammatory cytokine levels. As house dust mite (HDM) sensitization is dependent on TLR4 and HDM Der p 2, a structural homolog of MD-2, we also investigated the effect of MD-2s on house dust mite (HDM)-induced allergic airway inflammation. Ad-MD-2s given before HDM sensitization significantly inhibited subsequent allergic airway inflammation after HDM challenge, including reductions in eosinophils, goblet cell hyperplasia, and IL-5 levels. Our study indicates that the alternatively spliced short isoform of human MD-2 could be a potential therapeutic candidate to treat human diseases induced or exacerbated by TLR4 signaling, such as Gram-negative bacterial endotoxin-induced lung injury and house dust mite-triggered allergic lung inflammation. PMID:25576596

  13. 77 FR 4829 - Emilio Luna, M.D.; Decision and Order

    Science.gov (United States)

    2012-01-31

    ... receive back either an error or undeliverable message.\\3\\ See Robert Leigh Kale, 76 FR 48898, 48899-900... Registrant was a fugitive from justice and wanted by the FBI. \\3\\ While in Kale, I explained that the use...

  14. 77 FR 44679 - Suntron Corporation, Including On-Site Leased Workers From Manpower, Nesco, TPI and Robert Half...

    Science.gov (United States)

    2012-07-30

    ... Notice of determination was published in the Federal Register on December 6, 2012 (Vol. 76, No. 234 FR..., Nesco, TPI and Robert Half, Sugarland, TX; Amended Certification Regarding Eligibility To Apply for... boards. The company reports that workers leased from NESCO, TPI, and Robert Half were employed on-site...

  15. 78 FR 27996 - Notice of Intent To Repatriate Cultural Items: The Robert S. Peabody Museum of Archaeology...

    Science.gov (United States)

    2013-05-13

    ... Archaeology, Phillips Academy, Andover, MA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Robert S. Peabody Museum of Archaeology, Phillips Academy, Andover, MA, in consultation with the... these cultural items should submit a written request to the Robert S. Peabody Museum of Archaeology....

  16. Robert Owen: A Historiographic Study of a Pioneer of Human Resource Development

    Science.gov (United States)

    Hatcher, Tim

    2013-01-01

    Purpose: The purpose of this paper is to investigate the ideals and activities of the nineteenth century Welsh industrialist and reformer Robert Owen (1771-1858), and how they informed modern human resource development (HRD) concepts and practices and provided evidence of Owen as a HRD pioneer. Design/methodology/approach: Historiography provided…

  17. Akuginow and Haines-Stiles Receive 2013 Robert C. Cowen Journalism Award: Citation

    Science.gov (United States)

    Alley, Richard

    2014-01-01

    From Cosmos to Mars and Pluto and back home, Geoffrey Haines-Stiles and Erna Akuginow have invested their careers reporting the best modern science in novel, compelling, and accessible ways through documentaries, live events, print, and new media. They are outstanding recipients of the AGU Robert C. Cowen Award for Sustained Achievement in Science Journalism.

  18. Robert G. Ingersoll: Spokesman for Individual Freedom of Thought and Expression.

    Science.gov (United States)

    Chandler, Daniel Ross

    Robert G. Ingersoll exerted considerable social impact on American culture, employing rhetorical persuasion to champion the free thought movement of the late 1880's. Primarily concerned with advocating the principle of individual freedom of thought and expression in religious life, he enraged his contemporary churchmen who were devoted to group…

  19. Great Mentors: Robert Jervis, Bruce Bueno de Mesquita, and Peter Katzenstein

    Science.gov (United States)

    McDermott, Rose

    2010-01-01

    I have been extremely blessed in my life to have benefitted from some amazing mentors and friends in both psychology (most notably, Amos Tversky, Phil Zimbardo, and Leda Cosmides) and political science. Inspired by the occasion of Robert Jervis' festschrift, which importantly does not signal his imminent retirement, I was prompted to take…

  20. Tüli Robert Smithsoni "Spiraalse muuli" taastamise ümber / Rael Artel

    Index Scriptorium Estoniae

    Artel, Rael, 1980-

    2004-01-01

    Ameerika maakunstniku Robert Smithsoni (1938-1973) töö "Spiral Jetty" / "Spiraalne muul", mis on ligi 30 aastat seisnud nähtamatult Utah' osariigis Suure Soolajärve põhjas, on praegu kogu ulatuses näha. Teose omanik Dia kunstikeskus on dilemma ees, kas muul restaureerida või mitte

  1. "A Time of Shame and Sorrow": Robert F. Kennedy and the American Jeremiad.

    Science.gov (United States)

    Murphy, John M.

    1990-01-01

    Examines the rhetorical function of the modern American jeremiad as a means to restore social harmony in a time of crisis. Analyzes Robert F. Kennedy's response to the assassination of Martin Luther King, Jr. Reveals the strengths and limitations of the jeremiad as a response to social crisis. (SR)

  2. Abuse of Power? : J. Edgar Hoover vs. Robert Kennedy and Martin Luther King, Jr.

    OpenAIRE

    Isaksen, Vigdis

    2002-01-01

    In this thesis I have looked at how J. Edgar Hoover came to power as Director of the FBI, and how he later used that power against Attorney General Robert Kennedy and SCLC leader Martin Luther King, Jr. I have further analyzed the reasons and motives for Hoover's actions by, among other things, making a psychological profile on the Director.

  3. "The Misfortune of a Man Like Ourselves": Robert Cormier's "The Chocolate War" as Aristotelian Tragedy.

    Science.gov (United States)

    Keeling, Kara

    1999-01-01

    Examines criticism of and resistance to Robert Cormier's young adult novel "The Chocolate War." Argues that the book should be taught as tragedy and that teachers should pay their high school students the compliment of assuming their humanity and thus their need and ability to grapple with true tragedy. (SR)

  4. Adventurous Navigator of the Dimensions of High Ability: An Interview with Robert J. Sternberg

    Science.gov (United States)

    Henshon, Suzanna E.

    2008-01-01

    Robert J. Sternberg is Dean of the School of Arts and Sciences, Professor of Psychology, and Adjunct Professor of Education at Tufts University. He also is Honorary Professor of Psychology at the University of Heidelberg, Germany. Prior to joining the faculty at Tufts, he was IBM Professor of Psychology and Education in the Department of…

  5. Spontaneous symmetry breaking and masses numerical results in Doplicher-Fredenhagen-Roberts noncommutative space-time

    Science.gov (United States)

    Neves, M. J.; Abreu, Everton M. C.

    2016-04-01

    With the elements of the Doplicher-Fredenhagen-Roberts (DFR) noncommutative formalism, we have constructed a standard electroweak model. We have introduced the spontaneous symmetry breaking and the hypercharge in DFR framework. The electroweak symmetry breaking was analyzed and the masses of the new bosons were computed.

  6. Uudised : Tüüri Tshellokontsert Tokios. Robert Fripp tuleb Eestisse

    Index Scriptorium Estoniae

    2006-01-01

    Erkki-Sven Tüüri "Tshellokontserdi" esitusest 28. juunil Tokio Suntory Hallis ja 29. juunil Tokio Opera Hallis. Inglise rockkitarristi Robert Frippi kontsertidest 22. aug. Tallinna Pühavaimu kirikus, 23. aug. Pärnu Eliisabeti kirikus, 24. aug. Haapsalu Lossikirikus, 25. aug. Viljandi Jaani kirikus ja 26. aug. Tartu Jaani kirikus

  7. Robert Sabuda on the Art of the Pop-up; Creating Pop-ups.

    Science.gov (United States)

    Ball, Sherry

    2003-01-01

    These two articles discuss the design and production of pop-up books, focusing on the work of Robert Sabuda. Discusses books as an art form, producing prototypes, factory production, pop-up projects for children, Web sites, and a history of pop-ups, and includes a bibliography of relevant materials. (LRW)

  8. Fermilab's Helen Edwards receives prestigious 2003 Robert R. Wilson prize from the American Physical Society

    CERN Multimedia

    2002-01-01

    Helen Edwards has been awarded the 2003 Robert R. Wilson prize. She was cited for "her pivotal achievement and critical contribution as the leader in the design, construction, commissioning and operation of the Tevatron, and for her continued contributions to the development of high gradient superconducting linear accelerators as well as bright and intense electron sources." (1/2 page).

  9. The Education of Nations: An Analysis of Robert B. Reich's Economic Theory.

    Science.gov (United States)

    Lockwood, John H.

    This essay critiques the book "The Work of Nations: Preparing Ourselves for 21st Century Capitalism" (1991), by Robert Reich, Secretary of Labor in the Clinton administration. Reich described the development of the symbolic-analyst as the new citizen in the economic order, utilizing the basic skills of abstraction, system thinking,…

  10. USA mõtleja : vaid rikkus riiki koos ei hoia / Robert Putnam ; interv. Erkki Bahovski

    Index Scriptorium Estoniae

    Putnam, Robert

    2006-01-01

    USA Harvardi ülikooli politoloogiaprofessori Robert Putnami arvates on etniliselt mitmekesistes riikides ühtsustunde loomine raske, selle saavutamisele aitaksid kaasa ühiskonna pingevabam enesemääratlus ning paindlikumad töögraafikud naistele ühendamaks pere tööga. Lisa: Üksi või koos?

  11. USA kaitseminister Robert Gates süüdistas liitlasvägesid oskamatuses / Evelyn Kaldoja

    Index Scriptorium Estoniae

    Kaldoja, Evelyn, 1980-

    2008-01-01

    USA kaitseminister Robert Gates väitis ajalehes The Los Angeles Times avaldatud intervjuus, et Lõuna-Afganistani olukord on halvenenud seal võitlevate USA liitlasvägede puuduliku väljaõppe tõttu. Liitlasriikide reageeringuid. Arvamust avaldavad Jaak Aaviksoo, Kaarel Kaas

  12. The man behind the microchip Robert Noyce and the invention of Silicon Valley

    CERN Document Server

    Berlin, Leslie

    2005-01-01

    Robert Noyce was a brilliant inventor, a leading entrepreneur and a daring risk taker, who piloted his own jets and skied mountains accessible only by helicopter. This book captures not only this colorful individual, but also the vibrant interplay of technology, business, money, politics and culture that defines the Silicon Valley.

  13. Robert Antropov saab tagasi politseitööle / Tuuli Koch

    Index Scriptorium Estoniae

    Koch, Tuuli

    2005-01-01

    25. augustil politseiameti peadirektori kohalt vabastatud Robert Antropov jätkab teenistust politseiameti politseidirektori ametikohal. Antropovi tööülesandeks uues ametis on tõhustada politsei ja siseministeeriumi koostööd. Vt. samas: Ansip toetab politseiameti kaotamise ideed

  14. Underwater EVA training in the WETF with astronaut Robert L. Stewart

    Science.gov (United States)

    1983-01-01

    Underwater extravehicular activity (EVA) training in the weightless environment training facility (WETF) with astronaut Robert L. Stewart. Stewart is simulating a planned EVA using the mobile foot restraint device and a one-G version of the Canadian-built remote manipulator system.

  15. Robert Garrett, Tasmanian penal colony surgeon: alcoholism, medical misadventure and the penal colony of Sarah Island.

    Science.gov (United States)

    Stride, P

    2011-09-01

    Robert Garrett emigrated from Scotland to Van Diemen's Land (now Tasmania) in 1822. Within a few months of arrival he was posted to the barbaric penal colony in Macquarie Harbour, known as Sarah Island. His descent into alcoholism, medical misadventure and premature death were related to his largely unsupported professional environment and were, in many respects, typical of those subjected to this experience.

  16. Kolm vaadet Tallinna vanalinnale / Villem Tomiste, Martin Aunin, Robert Treufeldt ; intervjueerinud Ingrid Ruudi

    Index Scriptorium Estoniae

    Tomiste, Villem, 1975-

    2009-01-01

    Tallinna vanalinna ja kesklinna piiril asuv kvartal 57B, mis piirneb Aia, Vana-Viru, Inseneri tänava ja Mere Puiesteega, ajendas vanalinna hoonestuspõhimõtete ja tulevikulahenduste üle arutama arhitekte Villem Tomistet, Martin Auninit ning arhitektuuriajaloolast, ICOMOSi Eesti komitee esimeest Robert Treufeldti. Pikemalt korterelamust Aia 4/Vana-Viru 13, Aia 6 ja 8 detailplaneeringu eskiisist

  17. Saksa filmilootusega tänavaelust ja hullusest / Robert Stadlober ; interv. Janno Zõbin

    Index Scriptorium Estoniae

    Stadlober, Robert

    2002-01-01

    Pimedate Ööde Filmifestivalil näidatud saksa mängufilmis "Engel & Joe" (režissöör Vanessa Jopp) ühes peaosas esines festivali külastanud saksa näitleja Robert Stadlober (1982). Näitleja Engeli rollist ja oma elukogemusest, mis aitas seda rolli kehastada

  18. 75 FR 32740 - Action Affecting Export Privileges; Aaron Robert Henderson and Valhalla Tactical Supply

    Science.gov (United States)

    2010-06-09

    ... Tactical Supply In the Matter of: Aaron Robert Henderson, 740 Jessie St., North Liberty, IA 52317. Respondent and Valhalla Tactical Supply, 740 Jessie Street, North Liberty, IA 52317. Related Person; Order... is the owner, operator and president of Valhalla Tactical Supply (``Valhalla''), Valhalla is...

  19. Cosmic Thing: Astrology, Space Science, and Personal Cartography in Robert Rauschenberg's Autobiography

    Science.gov (United States)

    Carey, C. L.

    2011-06-01

    The following paper undertakes an iconographic analysis of Robert Rauschenberg's large scale print, Autobiography (1967). The artist's interest in astronomy and astrology, visual metaphors aligning the body with the cosmos, and the cartographic representation of self are discussed. Autobiography is placed in cultural and historical context with other works by the artist, elaborated as a personal narrative-an alternative to traditional self portraiture.

  20. [Robert Schweitzer. Finnland, das Zarenreich und die Deutschen] / Karsten Bgüggemann

    Index Scriptorium Estoniae

    Brüggemann, Karsten, 1965-

    2011-01-01

    Arvustus: Robert Schweitzer. Finnland, das Zarenreich und die Deutschen : gesammelte Studien zum europäischen Nordosten. Festgabe zum 60. Geburtstag des Verfassers. Hrsg. von Uta-Maria Liertz. (Veröffentlichungen der Aue-Stiftung. Bd. 20) Verlag Schmidt-Römhild

  1. Using Performance as an Interpretive Strategy in Teaching Robert Browning's "My Last Duchess."

    Science.gov (United States)

    Schevera, Nicholas

    1997-01-01

    Uses role-playing, dramatic monologues, and "tableaux vivant" to interpret Robert Browning's poem "My Last Duchess" in an introductory literature class at Westchester Community College. Notes that performative strategies illustrate connections in the poem that often remain unnoticed on a first reading. (PA)

  2. Acid-Base Chemistry According to Robert Boyle: Chemical Reactions in Words as well as Symbols

    Science.gov (United States)

    Goodney, David E.

    2006-01-01

    Examples of acid-base reactions from Robert Boyle's "The Sceptical Chemist" are used to illustrate the rich information content of chemical equations. Boyle required lengthy passages of florid language to describe the same reaction that can be done quite simply with a chemical equation. Reading or hearing the words, however, enriches the student's…

  3. Family of Origin and Career Counseling: An Interview with Robert Chope

    Science.gov (United States)

    Lara, Tracy

    2007-01-01

    Robert Chope is a professor of counseling at San Francisco State University, where he coordinates the Career Counseling Program. He is also the founder of the Career and Personal Development Institute in San Francisco, a practice that he has had for more than 25 years. Dr. Chope received his PhD from the University of Minnesota, Department of…

  4. Robert Molesworth's An Account of Denmark as it was in 1692

    DEFF Research Database (Denmark)

    Olden-Jørgensen, Sebastian

    2008-01-01

    Robert Moleswort's An Account of Denmark as it was in 1692 is a violent political pamphlet in the early British Whig-tradition aimed at underscoring republican values by pointing to the dreadful example of Danish Absolutist slavery. It was a bestseller on an international scale. In his book...

  5. Robert Frazure mälestuspuu Sõpruse pargis sai graniitpotil tähistuse / Raivo Feldmann

    Index Scriptorium Estoniae

    Feldmann, Raivo

    2007-01-01

    Esimese USA suursaadiku sõjajärgses Eestis, Robert Frazure' mälestuspuu sai Sõpruse pargis tähise, vajaliku raha ettevõtmise heaks annetasid Ameerika Suursaatkonna töötajad, nende delegatsioon viibis Põltsamaal Sõpruse pargis toimunud üritusel

  6. Response to Mudford, Hogg, and Roberts on Continuous Recording of Behavior State.

    Science.gov (United States)

    Guess, Doug; Roberts, Sally; Behrens, Gene Ann; Rues, Jane

    1998-01-01

    Responds to a critique by Mudford, Hogg, and Roberts (1997) that raised concerns about the observation code used in a longitudinal research project to assess emerging behavior state patterns in young children with disabilities. Concerns about the thoroughness of the reliability data collected by Mudford are discussed. (Author/CR)

  7. Hodorkovski advokaat : Venemaa ei ole õigusriik / Robert R. Amsterdam ; interv. Aleksei Günter

    Index Scriptorium Estoniae

    Amsterdam, Robert R.

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 24. juuli lk. 10. Naftamagnaadi Mihhail Hodorkovski advokaat vastab küsimustele, mis puudutavad ärimehe olukorda ja elamistingimusi vanglas ning tema võimalust ennetähtaegselt vabaneda. Lisa: Robert R. Amsterdam

  8. Crip Excess, Art, and Politics: A Conversation with Robert McRuer

    Science.gov (United States)

    Peers, Danielle; Brittain, Melisa; McRuer, Robert

    2012-01-01

    A book, article, or theory might be judged not only by the insightfulness of the claims it makes, but also by the connections, possibilities, and politics that it fosters. By these criteria, Robert McRuer's publications, of which the most widely known is "Crip Theory: Cultural Signs of Queerness and Disability" (2006), are crucial. He weaves…

  9. Robert Louis Stevenson and Children's Play: The Contexts of "A Child's Garden of Verses."

    Science.gov (United States)

    Rosen, Michael

    1995-01-01

    Examines a classic text, Robert Louis Stevenson's "A Child's Garden of Verses," within the context of several of Stevenson's own essays. Suggests that unlike many children's books, it was an experiment and one that Stevenson, for various reasons, including his premature death, was never able to adapt for future use. (RS)

  10. Iterative redundant encryption based on MD5 algorithm%基于MD5的迭代冗余加密算法

    Institute of Scientific and Technical Information of China (English)

    王津涛; 覃尚毅; 王冬梅

    2007-01-01

    MD5报文摘要算法是一种非常流行的加密方案,是对任意长度的消息提取数字指纹或消息摘要的算法,但是,在计算上难以提供两个具有相同数字指纹的不同消息,并难以由给定的数字指纹推算出相应的消息.基于MD5的迭代冗余加密算法对MD5算法进行了扩展,利用了MD5算法的强大安全性,实现了文件加密、解密和数据完整性保护的功能.

  11. MD5算法的过程分析及其C#实现%Process Analysis of MD5 Algorithm and Its C# realization

    Institute of Scientific and Technical Information of China (English)

    杜昌钰

    2008-01-01

    文章对MD5即"Message-Digest Algorithm 5(报文流行的C#对8D5算法进行了具体的实现,给出了一个具体的C#加密实例.虽然MD5因王小云教授在2004国际密码学会议(Crypto'2004)上发表的论文受到了前所未有的冲击,但MD5在一些非关键领域应用还是相当广泛.最后还提出了一些针对MD5现状的解决对策和建议.

  12. ASP网站用户帐号的MD5加密技术%The Encryption Techniques of MD5 about User Accounts in ASP Web

    Institute of Scientific and Technical Information of China (English)

    田文艳

    2007-01-01

    本文介绍了Asp中的MD5(Message-Digest Algorithm 5)加密技术,分析了它的工作原理及使用过程,并通过具体的使用实例,说明了MD5加密技术在网站开发中的具体实现方法.

  13. 一种使MD5算法产生更强雪崩效应的方法%Generating stronger avalanche effect in MD5 algorithm

    Institute of Scientific and Technical Information of China (English)

    张鑫彦; 闫德勤

    2010-01-01

    通过研究不同的差分分析对MD5算法的攻击后发现,差分分析攻击之所以可以成功,是因为在MD5算法中改变了明文中一些特定位,而这些特定位的改变在许多轮中最多只影响链接变量的几个位,并且这些小的差分能在随后的多轮操作中得到纠正,从而产生了碰撞.这就说明原MD5算法的雪崩效应不能阻止差分分析的攻击,而为了提高MD5算法的安全性,必须提高其雪崩效应的敏感性.分析结果表明,用动态明文变化函数对MD5算法进行修改,能使其产生更敏感的雪崩效应,以此来有效防止差分分析攻击,提高MD5算法的安全性.

  14. A super-high throughput implementation of MD5 algorithm on FPGA%超高吞吐量MD5算法的FPGA实现

    Institute of Scientific and Technical Information of China (English)

    王臣; 袁焱

    2011-01-01

    In this paper, a novel architecture is proposed to increase the performance of MD5 computing in FPGA , which can achieve a super-high throughput. The scheme is based on full-pipeline for MD5 implementation. Moreover, FIFO cache structure is used for data storage and cooperative computing. The results of simulation and implementation show that the scheme can achieve the theoretical upper bound on throughput. And based on the same platform of FPGA, it outperforms the published scheme with best performance in terms of 77% higher throughput.%为了提高MD5算法在FPGA中实现的运算效率,使之达到超高的数据吞吐量,提出了一种新的全流水线架构,用于实现MD5算法.架构中使用了FIFO缓存存储数据,以配合流水线的运算.实验验证其达到了单个MD5运算单元运算吞吐量的理论上限,在相同芯片平台上,超过已发表的MD5运算模块最高吞吐量的77%.

  15. Robert Kiyosakin talousajattelu ja menestyvä yrittäjyys : Mitä lisäarvoa Robert Kiyosakin periaatteet voisivat tuoda suomalaiseen opetussuunnitelmaan

    OpenAIRE

    Hartikka, Nora

    2015-01-01

    Tämän opinnäytetyön tavoitteena on tuoda talousajattelija Robert Kiyosakin ajatusmalleja mahdollisimman monen ihmisen tietoisuuteen. Työssä keskitytään muun muassa yrittäjyyteen ja sijoittamiseen, joihin liittyvä talousajattelun opetus kouluissa kirjoittajan mielestä on varsin puutteellista. Tarkoituksena on ehdottaa, kuinka Suomen koulujärjestelmää kehittämällä ja Kiyosakin ajatuksia siinä hyödyntämällä voisi positiivisesti vaikuttaa ihmisten talouteen. Opinnäytetyön teoreettinen viitekeh...

  16. 76 FR 50950 - Drawbridge Operation Regulation; Isle of Wight (Sinepuxent) Bay, Ocean City, MD

    Science.gov (United States)

    2011-08-17

    ... (Sinepuxent) Bay, Ocean City, MD AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY: The... of Wight (Sinepuxent) Bay, mile 0.5, at Ocean City, MD. The proposed change will alter the dates the... will then become highlighted in blue. In the ``Document Type'' drop down menu select ``Proposed...

  17. 76 FR 17672 - Alfred E. Boyce, M.D.; Decision and Order

    Science.gov (United States)

    2011-03-30

    ... Enforcement Administration Alfred E. Boyce, M.D.; Decision and Order On August 12, 2010, Administrative Law....100(b) and 0.104, I order that DEA Certificate of Registration, FB0003943, issued to Alfred E. Boyce, M.D., be, and it hereby is, revoked. I further order that any pending application of Alfred E....

  18. MD#1182: Calibration of diamond particle detectors in IP6

    CERN Document Server

    Valette, Matthieu; Lindstrom, Bjorn Hans Filip; Wiesner, Christoph

    2017-01-01

    In case of an asynchronous beam dump with a fully filled LHC machine it is expected that all standard ionisation chamber Beam Loss Monitors (IC BLM) around the LHC dumping region in IP6 will be saturated. Diamond Beam Loss Monitors (dBLM) were therefore installed next to the movable dump protection absorber (TCDQ) downstream of the extraction kickers. These detectors allow resolving losses at a nanosecond timescale and with an dynamic range of several orders of magnitude; thus, allowing to know the number of nominal bunches impacting the TCDQ. After a first series of calibrations using asynchronous beam dump tests, an experiment was conducted during MD#1182 to demonstrate the possibility of resolving a nominal bunch hitting the TCDQ. The impact parameter of the bunches on the TCDQ was first scanned using probe bunches with lower intensity then tests were done with nominal bunches (1.1e11 p/bunch) at injection energy. High energy calibration of the losses was also attempted unsuccessfully. Due to different beh...

  19. H5MD: a structured, efficient, and portable file format for molecular data

    CERN Document Server

    de Buyl, Pierre; Höfling, Felix

    2013-01-01

    We propose a new open file format named "H5MD" for storing molecular simulation data such as trajectories of particle positions and velocities as well as thermodynamic observables that are tracked during the course of the simulation. H5MD files are HDF5 (Hierarchical Data Format) files with a specific hierarchy and naming scheme. Thus, H5MD inherits many benefits of HDF5, e.g., structured layout of multi-dimensional data sets, data compression, fast and parallel I/O, and portability across many programming languages and hardware platforms. H5MD files are self-contained, and foster the reproducibility of scientific data and the interchange of data between researchers using different simulation programs and analysis software. In addition, the H5MD specification can serve for other kinds of data (e.g. experimental data) and is extensible to supplemental data without breaking the compliance of the file to the specification.

  20. PHP中的MD5加密机制探究

    Institute of Scientific and Technical Information of China (English)

    党长青

    2014-01-01

    MD5广泛用于加密和解密技术上。现阶段,存在两种加密方式,双向加密和单向加密。MD5是在Web应用程序中最常用的密码加密算法。由于MD5是不可逆的,因而经过MD5计算得到后的密文,不能通过逆向算法得到原文。在PHP应用程序中使用MD5加密文本密码的初衷,就是为了防止数据库中保存的密码不幸泄露后被直接获得。

  1. Md1 and Rp105 regulate innate immunity and viral resistance in zebrafish.

    Science.gov (United States)

    Candel, Sergio; Sepulcre, María P; Espín-Palazón, Raquel; Tyrkalska, Sylwia D; de Oliveira, Sofía; Meseguer, José; Mulero, Victoriano

    2015-06-01

    TLR4 was the first TLR family member identified in mammals and is responsible for the activation of the immune response by bacterial LPS. Later, MD1 and RP105 were shown to form complexes that directly interact with the MD2-TLR4 complex, acting as physiological negative regulators of LPS signaling. Despite the general conservation of various TLR families from fish to mammals, several differences can be appreciated, such as the high tolerance of fish to LPS, the absence of the crucial accessory molecules Md2 and Cd14 for Tlr4 signaling in fish, the absence of Tlr4 in some fish species, and the confirmation that LPS does not signal through Tlr4 in zebrafish. The present study has identified the Rp105 and Md1 homologs in zebrafish, confirming (i) Rp105 and Tlr4 evolved from a common ancestor before the divergence between fish and tetrapods and (ii) the presence of Md1 in teleost fish and the lack of Md2, suggesting that the divergence of these accessory molecules occurred in the tetrapod lineage. Biochemical and functional studies indicate that Md1 binds both Rp105 and Tlr4 in zebrafish. Genetic inhibition of zebrafish Md1 and Rp105 reveals that Md1 or Rp105 deficiency impairs the expression of genes encoding pro-inflammatory and antiviral molecules, leading to increased susceptibility to viral infection. These results shed light on the evolutionary history of Md1 and Rp105 and uncover a previously unappreciated function of these molecules in the regulation of innate immunity.

  2. On the Style and Meaning of Robert Frost’s“A Servant to Servants”

    Institute of Scientific and Technical Information of China (English)

    马娟

    2014-01-01

    The greatest characteristic of Robert Frost’s poetry is that complex and delicate subjects are embodied in narrative de-scription which seems rather simple. Frost achieves a distinctive grace by combining unique structure and profound meaning to-gether. This thesis explores Robert Frost’s“A Servant to Servants”from the point of view on narratology finds out the careful ar-rangement and unique perspective. The present study concludes that while this narrative poem appears to have a simple organiza-tion and to limit itself to colloquial language, at a deeper level it has careful arrangement and expresses profound meaning. While enjoying the poem’s vivid narrate, the reader also comes to realize the truth that“A Servant to Servants”.

  3. Robert et Maya Kandel, La Catastrophe climatique, Hachette, 2009, 237 p.

    Directory of Open Access Journals (Sweden)

    Luc Semal

    2012-05-01

    Full Text Available Robert Kandel, astrophysicien et directeur de recherche émérite au CNRS, n’en est pas à son premier ouvrage sur le réchauffement climatique. Dans ce nouvel essai (co-rédigé avec sa fille Maya Kandel, il est intéressant de constater un changement de ton assez représentatif de l’inquiétude croissante des scientifiques à l’égard du bouleversement climatique en cours. Tout en rappelant qu’il a longtemps fait preuve de méfiance à l’égard des discours catastrophistes, Robert Kandel annonce dès l’i...

  4. [Robert Koch was right. Towards a new interpretation of tuberculin therapy].

    Science.gov (United States)

    Cardona, Pere J

    2006-01-01

    At the centenary of Robert Koch's Nobel Prize award, tuberculosis treatment with tuberculin, which was announced in Berlin in 1890, is still considered a failure. Nevertheless, there is now sufficient information supporting the idea that tuberculin therapy was widely used until the second half of the twentieth century; thus, the impact of this treatment should be studied and related to the decrease in tuberculosis-related mortality recorded in that period. Moreover, tuberculin therapy has inspired at least two new immunotherapies; these, however, were directed toward precisely the opposite effect: suppression of the Koch phenomenon. Thus, inoculation of Mycobacterium vaccae polarizes the immune response towards the Th1 type; and inoculation of RUTI avoids local immunodepression after short-term chemotherapy without inducing toxicity. For this reason, Robert Koch's work on antituberculosis therapy should be reread and proper recognition given to his contribution in this field.

  5. [Military physician Colonel Robert Yout. Twenty years as a paratrooper medical officer].

    Science.gov (United States)

    Yout, Guillaume

    2014-01-01

    Robert Yout was born on June 15th, 1930. A rugby player and a member of the French Volleyball team, he was already an outstanding sportsman when he began his studies at the Health Services School in Lyons. His career as an army medical officer among the paratroopers was atypical. He spent many years among the most prestigious elite paratroopers of the French army: the 2nd REP, the 1st CHOC and the CINC (The Army Training School for Combat Swimmers) . When he retired, he was Head Doctor of the Paratroopers parent company: The Airborne School of Pau. For the army medical historian, Robert Yout is the perfect example of a man with an outstanding and remarkable career: A crack soldier, a brave army medical officer, a parachuting and diving pioneer and a sportsman of international class.

  6. Robert Hooke, inventor of the vacuum pump and the first altitude chamber (1671).

    Science.gov (United States)

    Harsch, Viktor

    2006-08-01

    Robert Hooke (1635-1703), an assistant researcher to Robert Boyle (1627-1691), invented the first functional British air pump. Applying it to scientific research, Hooke operated the world's first hypobaric chamber in 1671, using it for self-experimentation. He recorded the first physiological observations in an artificial altitude-equivalent environment up to 2400 m. Though Hooke's experiment showed some methodological insufficiencies, his imaginative experimental techniques were remarkable for their time and were indicative of the lively intellectual atmosphere of the Royal Society and the significant contributions of Hooke, who was a member. Two centuries passed before the French physiologist Paul Bert (1830-1886) conducted his famous laboratory-supported investigations of high altitude physiology. Bert played a decisive role in the discovery of the causes of decompression sickness; a contribution Hooke could not make due to the technical deficiencies of the 17th century.

  7. Electroporation of archaeal lipid membranes using MD simulations.

    Science.gov (United States)

    Polak, Andraž; Tarek, Mounir; Tomšič, Matija; Valant, Janez; Ulrih, Nataša Poklar; Jamnik, Andrej; Kramar, Peter; Miklavčič, Damijan

    2014-12-01

    Molecular dynamics (MD) simulations were used to investigate the electroporation of archaeal lipid bilayers when subjected to high transmembrane voltages induced by a charge imbalance, mimicking therefore millisecond electric pulse experiments. The structural characteristics of the bilayer, a 9:91 mol% 2,3-di-O-sesterterpanyl-sn-glicerol-1-phospho-myo-inositol (AI) and 2,3-di-O-sesterterpanyl-sn-glicerol-1-phospho-1'(2'-O-α-D-glucosyl)-myo-inositol (AGI) were compared to small angle X-ray scattering data. A rather good agreement of the electron density profiles at temperatures of 298 and 343 K was found assessing therefore the validity of the protocols and force fields used in simulations. Compared to dipalmitoyl-phosphatidylcholine (DPPC), the electroporation threshold for the bilayer was found to increase from ~2 V to 4.3 V at 323 K, and to 5.2 V at 298 K. Comparing the electroporation thresholds of the archaeal lipids to those of simple diphytanoyl-phosphatidylcholine (DPhPC) bilayers (2.5 V at 323 K) allowed one to trace back the stability of the membranes to the structure of their lipid head groups. Addition of DPPC in amounts of 50 mol% to the archaeal lipid bilayers decreases their stability and lowers the electroporation thresholds to 3.8 V and 4.1 V at respectively 323 and 298 K. The present study therefore shows how membrane compositions can be selected to cover a wide range of responses to electric stimuli. This provides new routes for the design of liposomes that can be efficiently used as drug delivery carriers, as the selection of their composition allows one to tune in their electroporation threshold for subsequent release of their load.

  8. When the Zombies Came for Our Children: Exploring Posthumanism in Robert Kirkman's The Walking Dead

    OpenAIRE

    2016-01-01

    Through the theoretical lens of cultural posthumanism, this essay offers a reading of writer Robert Kirkman’s 'The Walking Dead' comics series (2003 ongoing). By referring to specific passages of Kirkman’s script, this essay explores 'The Walking Dead'’s psychologization of childhood as its narrative moves away from a satirical construction of the zombie apocalypse into the inquiry of contemporary (in)humanity.

  9. Charles Robert Darwin and Alfred Russel Wallace: their dispute over the units of selection.

    Science.gov (United States)

    Ruse, Michael

    2013-12-01

    Charles Darwin and Alfred Russel Wallace independently discovered the mechanism of natural selection for evolutionary change. However, they viewed the working of selection differently. For Darwin, selection was always focused on the benefit for the individual. For Wallace, selection was as much something of benefit for the group as for the individual. This difference is traced to their different background political-economic views, with Darwin in favor of Adam Smith's view of society and Wallace following Robert Owen in being a socialist.

  10. TWO PERSONALITIES, TWO SOLUTIONS FOR BUSINESS DEVELOPMENT IN ROMANIA: ROBERT KIYOSAKI OR JIM COLLINS?

    OpenAIRE

    Gheorghe NEGOESCU

    2010-01-01

    Romania, for that matter, all countries in the world can not overcome the financial crisis without business development. Robert Kiyosaki believes that financial education promoted since primary school may decisively contribute in better to the changing of business environment in a country. Jim Collins studied the activity of over 1400 U.S.A. companies during 1980-1998 and concluded that only 11 companies managed good results in financial terms because they have been able to practice a managem...

  11. STS-38 Mission Specialist (MS) Robert C. Springer dons EMU in JSC's WETF

    Science.gov (United States)

    1990-01-01

    STS-38 Mission Specialist (MS) Robert C. Springer dons extravehicular mobility unit (EMU) upper torso with technicians' assistance in JSC's Weightless Environment Training Facility (WETF) Bldg 29. Positioned on the WETF platform at pool side, Springer is preparing for an underwater extravehicular activity (EVA) simulation. During the training session, Springer will rehearse contingency EVA procedures for the STS-38 mission aboard Atlantis, Orbiter Vehicle (OV) 104.

  12. On the Dramatic Features in Robert Browning’s Poems of Dramatic Monologue

    Institute of Scientific and Technical Information of China (English)

    杜玉文

    2014-01-01

    This paper explored the three dramatic features intrinsic in Robert Browning’s poems of dramatic monologue, name-ly, the employment of first-person point of view, the use of irony, and the intricate psychological exploration and vivid character-ization. Such features are crucial in the successful presentation of various human nature and experience with profundity, making his poems an enduring classic in the English literature.

  13. A gift of prophecy essays in celebration of the life of Robert Eugene Marshak

    CERN Document Server

    1994-01-01

    Robert Eugene Marshak (1916-92) devoted much of his life to helping other people carry out scientific research and gather to discuss their work. In addition to his scientific statesmanship, he was an extraordinarily gifted research scientist, and many of his scientific contributions have been prophetic. This book pays homage to his creativity and continuing work, with contributions from many of the people whose lives have been influenced by him.

  14. Sound and motion in the De Generatione Sonorum, a treatise by Robert Grosseteste

    CERN Document Server

    Sparavigna, Amelia Carolina

    2012-01-01

    Here I am proposing a discussion of some parts of the De Generatione Sonorum, one of the short treatises written by Robert Grosseteste. The main subject of this treatise is the phonetics. However, sound and oscillations are shortly described. Since Grosseteste discussed a phonetics based on the analogy with motions and their combinations, we can find in this text some hints on how a medieval scholar approached the description of motions.

  15. A Primary Study on the New Criticism in Robert Frost’s Desert Places

    Institute of Scientific and Technical Information of China (English)

    邴照宇

    2013-01-01

    A profound study from the viewpoint of New Criticism, can find that Robert Frost expresses his unique thoughts and attitudes to the world in Desert Places, which is rarely researched and concentrated on, through the distinct characters of New Crit-icism in tone, paradox, tension. The unpredicted and changeable nature which is depicted in Desert Places represent the author’s doubt about the communication among the people in the society, and he loses the confidence for people.

  16. When the Zombies Came for Our Children: Exploring Posthumanism in Robert Kirkman's The Walking Dead

    Directory of Open Access Journals (Sweden)

    Joseph Michael Sommers

    2016-01-01

    Full Text Available Through the theoretical lens of cultural posthumanism, this essay offers a reading of writer Robert Kirkman’s 'The Walking Dead' comics series (2003 ongoing. By referring to specific passages of Kirkman’s script, this essay explores 'The Walking Dead'’s psychologization of childhood as its narrative moves away from a satirical construction of the zombie apocalypse into the inquiry of contemporary (inhumanity.

  17. Tim, Jan Lucas ja Karl Robert - vennad üheks kuuks / Maris Laurits

    Index Scriptorium Estoniae

    Laurits, Maris

    2009-01-01

    Rakvere Teatri suvelavastuse "Vennad Lõvisüdamed" kaks Karli osatäitjat Jan Lucas Videvik ja Tim Leesnurm ning Joonatani osatäitja Karl Robert Saaremäe tegid Loksal Kaldmaa talus ratsasõiduproove. Üllar Saaremäe lavastuse "Vennad Lõvisüdamed" (Astrid Lindgreni samanimelise jutustuse järgi) esietendus on 11. juunil Rakvere teatri taga aias

  18. Lives in Exchange: The Collaborative Video Tapes of Lynda Benglis and Robert Morris

    Directory of Open Access Journals (Sweden)

    James Boaden

    2016-06-01

    Full Text Available In 1972 the artists Lynda Benglis and Robert Morris swapped videotapes made collaboratively in each other’s studios to create new works that negotiate their personal and professional relationship. This article argues that, taken together, these works question the common tropes of early video art, especially what art historian Rosalind Krauss called the ‘aesthetics of narcissism’, and point to the emergence of a form of fractured subjectivity borne from technological mediation.

  19. Approaching self-deception: how Robert Audi and I part company.

    Science.gov (United States)

    Mele, Alfred

    2010-09-01

    This article explores fundamental differences between Robert Audi's position on self-deception and mine. Although we both depart from a model of self-deception that is straightforwardly based on stereotypical interpersonal deception, we differ in how we do that. An important difference between us might be partly explained by a difference in how we understand the kind of deceiving that is most relevant to self-deception.

  20. PTC任命RobertP.Schechter为董事会新成员

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    2009年10月13日,PTC公司宣布,任命RobertP.Schechter为PTC公司董事会新成员。Schechter先生于1995——2008年期间担任NMS通讯公司(即现在的LiveWireMobile)首席执行官,近期担任NMS董事会主席兼首席执行官。