Results 61 to 70 of about 1,077,252 (284)

Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models

, 2011
We show that in O'Raifeartaigh models of spontaneous supersymmetry breaking, R-symmetries can be broken by non-zero values of fields at tree level, rather than by vacuum expectation values of pseudomoduli at loop level.
D. Shih, K.A. Intriligator, L. Ferretti, L.M. Carpenter, Z. Sun, Zheng Sun   +5 more
core   +1 more source

Traumatic Microhemorrhages Are Not Synonymous With Axonal Injury

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Diffuse axonal injury (DAI) is caused by acceleration‐deceleration forces during trauma that shear white matter tracts. Susceptibility‐weighted MRI (SWI) identifies microbleeds that are considered the radiologic hallmark of DAI and are used in clinical prognostication.
Karinn Sytsma, Rhonda Mittenzwei, Heather Maioli, Amanda Kirkland, C. Dirk Keene, Ramon Diaz‐Arrastia, Christine Mac Donald, Chiara Maffei, Brian L. Edlow, Amber L. Nolan   +9 more
wiley   +1 more source

World Sheet and Space Time Physics in Two Dimensional (Super) String Theory

, 1991
We show that tree level ``resonant'' $N$ tachyon scattering amplitudes, which define a sensible ``bulk'' S -- matrix in critical (super) string theory in any dimension, have a simple structure in two dimensional space time, due to partial decoupling of a
Ambjørn, Banks, Banks, Banks, Belavin, Bershadsky, Bershadsky, Bessis, Bouwknegt, Braaten, Braaten, Brézin, Brézin, Brézin, Brézin, Callan, Curtright, D. Kutasov, Das, Das, David, David, Demeterfi, Di Francesco, Di Francesco, Di Francesco, Di Francesco, Dine, Distler, Distler, Distler, Dotsenko, Dotsenko, Dotsenko, Douglas, Douglas, Feigin, Friedan, Friedan, Gervais, Gervais, Gervais, Ginsparg, Goulian, Green, Green, Gross, Gross, Gross, Gross, Gupta, Kazakov, Kazakov, Knizhnik, Kutasov, Kutasov, Kutasov, Lian, Lian, Mandal, Minic, Moore, Moore, Moore, Mukherji, Ooguri, Ooguri, P. Di Francesco, Parisi, Polchinski, Polchinski, Polchinski, Polchinski, Polyakov, Polyakov, Polyakov, Seiberg, Sengupta, Shenker, Witten, Witten, Witten   +81 more
core   +1 more source

Trajectories of Physical Function in Canadian Children with Juvenile Idiopathic Arthritis

Arthritis Care &Research, Accepted Article.
Objectives We describe trajectories of physical function in children newly diagnosed with juvenile idiopathic arthritis (JIA) and identify trajectories with persisting functional impairments and associated baseline characteristics. Methods We included patients enrolled in the Canadian Alliance of Pediatric Rheumatology Investigators (CAPRI) Registry ...
Clare Cunningham, Meghan McPherson, Lillian Lim, Roberta A. Berard, Matthew Berkowitz, Jean‐Philippe Proulx‐Gauthier, Brian M. Feldman, Nicole Johnson, Dax G. Rumsey, Heinrike Schmeling, Lori B. Tucker, Thomas Loughin, Kristin M. Houghton, Jaime Guzman, The CAPRI Registry Investigators   +14 more
wiley   +1 more source

Granulation Using Clustering And Rough Set Theory And Its Tree Representation

, 2007
Granular computing deals with representation of information in the form of some aggregates and related methods for transformation and analysis for problem solving. A granulation scheme based on clustering and Rough Set Theory is presented with focus on structured conceptualization of information has been presented in this paper.
Girish Kumar Singh, Sonajharia Minz
openaire   +1 more source

On the Tree-Level Structure of Scattering Amplitudes of Massless Particles

, 2011
We provide a new set of on-shell recursion relations for tree-level scattering amplitudes, which are valid for any non-trivial theory of massless particles. In particular, we reconstruct the scattering amplitudes from (a subset of) their poles and zeroes.
Benincasa, Paolo, Conde, Eduardo
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Uncertainty-Aware Dynamic Reliability Analysis Framework for Complex Systems

IEEE Access, 2018
Critical technological systems exhibit complex dynamic characteristics such as time-dependent behavior, functional dependencies among events, sequencing and priority of causes that may alter the effects of failure.
Sohag Kabir, Mohammad Yazdi, Jose Ignacio Aizpurua, Yiannis Papadopoulos   +3 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Grassmann Integral Representation for Spanning Hyperforests

, 2007
Given a hypergraph G, we introduce a Grassmann algebra over the vertex set, and show that a class of Grassmann integrals permits an expansion in terms of spanning hyperforests.
Aitken A C, Alan D Sokal, Andrea Sportiello, Balabanian N, Bedini A Caracciolo S Sokal A D Sportiello A, Berezin F A, Berge C, Berge C, Bruijn N G De, Caracciolo S, Caracciolo S Sokal A D Sportiello A, Caracciolo S Sokal A D Sportiello A, Caracciolo S Sokal A D Sportiello A, Caracciolo S Sportiello A Polin M Sokal A D, Castellani T, Chaiken S, Chen W K, Diestel R, Kasteleyn P W, Korepin V E, Lancaster P, Marcus M, Rittenberg V, Scheunert M, Sergio Caracciolo, Sokal A D, Stanley R P, Wu F Y, Zinn-Justin J   +28 more
core   +3 more sources