Gauge Invariance in Classical ElectrodynamicsThe concept of gauge invariance in classical electrodynamics assumes tacitly that Maxwell's equations have unique solutions. By calculating the electromagnetic field of a moving particle both in…Wolfgang Engelhardt·Oct 9, 2005SaveLearn
Determining the Spectral Signature of Spatial Coherent StructuresWe applied to an open flow a proper orthogonal decomposition (pod) technique, on 2D snapshots of the instantaneous velocity field, to reveal the spatial coherent structures responsible of the…L. R. Pastur, F. Lusseyran, Y. Fraigneau et al.·Oct 4, 2005SaveLearn
Natural configurations and normal frequencies of a vertically suspended, spinning, loaded chain with both extremities pinnedThe resonant configurations and normal frequencies of a loaded hanging chain that is rotating uniformly about the vertical are examined for theoretical and experimental perspectives. The chain is…J. -M. Noel, C. Niquette, S. Lockridge et al.·Oct 4, 2005SaveLearn
Two particle realisation of the Poincare group with interactionA relative position 4-vector is constructed for two spin-zero particles. Some advantages of this relative position over Bakamjian-Thomas are pointed out. The centre-of-mass (CM) and relative…Shaun N Mosley·Oct 3, 2005SaveLearn
On Two Complementary Types of Total Time Derivative in Classical Field Theories and Maxwell's EquationsClose insight into mathematical and conceptual structure of classical field theories shows serious inconsistencies in their common basis. In other words, we claim in this work to have come across two…R. Smirnov-Rueda·Oct 3, 2005SaveLearn
On Mathematical Defect in Demonstration of Convection Theorem: Implications For Continuum Mechanics and Other Classical Field TheoriesSerious mathematical defect in the important kinematics theorem known in continuum mechanics as Convection (or Transport) Theorem is reported. We claim that the traditional demonstration does not…R. Smirnov-Rueda·Oct 3, 2005SaveLearn
The cubic period-distance relation for the Kater reversible pendulumWe describe the correct cubic relation between the mass configuration of a Kater reversible pendulum and its period of oscillation. From an analysis of its solutions we conclude that there could be…Michele Rossi, Lorenzo Zaninetti·Oct 3, 2005SaveLearn
Classification of electromagnetic resonances in finite inhomogeneous three-dimensional structuresWe present a simple and unified classification of macroscopic electromagnetic resonances in finite arbitrarily inhomogeneous isotropic dielectric 3D structures situated in free space. By observing…Neil V. Budko, Alexander B. Samokhin·Sep 30, 2005SaveLearn
An Ultrasonic analog for a laserWe report measurements on ultrasonic systems analogous to random lasers. One system entails unstable ultrasonic feedback between distinct transducers, another involves a piezoelectric device that…Richard L Weaver, Oleg I Lobkis, Alexey Yamilov·Sep 26, 2005SaveLearn
On Higher Order Gravities, Their Analogy to GR, and Dimensional Dependent Version of Duff's Trace Anomaly RelationAn almost brief, though lengthy, review introduction about the long history of higher order gravities and their applications, as employed in the literature, is provided. We review the analogous…Mehrdad Farhoudi·Sep 25, 2005SaveLearn
Einstein's relativistic Doppler formulaWe note that Einstein's relativistic Doppler formula presents a strange aspect. For incident light received under a fixed non zero angle, the Doppler shift will change from blueshift to redshift…Pierseaux Yves·Sep 20, 2005SaveLearn
Space-time trigonometry and formalization of the "Twin Paradox" for uniform and accelerated motionsThe formal structure of the early Einstein's Special Relativity follows the axiomatic deductive method of Euclidean geometry. In this paper we show the deep-rooted relation between Euclidean and…Dino Boccaletti, Francesco Catoni, Vincenzo Catoni·Sep 20, 2005SaveLearn
Stiff dynamics of electromagnetic two-body motionWe study the stability of circular orbits of the electromagnetic two-body problem in an electromagnetic setting that includes retarded and advanced interactions. We give a method to derive the…Jayme De Luca·Sep 20, 2005SaveLearn
Time Reversal of Broadband Signals in a Strongly Fluctuating MIMO Channel: Stability and ResolutionWe analyze the time reversal of a multiple-input-multiple-output (MIMO) system in a space-frequency-selective multi-path fading channel described by the stochastic Schrödinger equation with a random…Albert Fannjiang·Sep 18, 2005SaveLearn
On Artificial Magneto-Dielectric Loading for Improving the Impedance Bandwidth Properties of Microstrip AntennasIn the present paper we discuss the effect of artificial magneto-dielectric substrates on the impedance bandwidth properties of microstrip antennas. The results found in the literature for antenna…Pekka Ikonen, Stanislav Maslovski, Constantin Simovski et al.·Sep 16, 2005SaveLearn
Totally Secure Classical Communication Utilizing Johnson (-like) Noise and Kirchoff's LawAn absolutely secure, fast, inexpensive, robust, maintenance-free and low-power- consumption communication is proposed. The states of the information bit are represented by two resistance values. The…Laszlo B. Kish·Sep 15, 2005SaveLearn
Comparison of compact bone failure under two different loadings rates: experimental and modelling approachesUnderstanding the mechanical behaviour of bones up to failure is necesary for diagnosis and prevention of accident and trauma. As far as we know, no authors have yet studied the tensile behaviour of…Martine Pithioux, D. Subit, P. Chabrand·Sep 14, 2005SaveLearn
An alternative ultrasonic method for measuring the elastic properties of cortical boneWe studied the elastic properties of bone to analyze its mechanical behavior. The basic principles of ultrasonic methods are now well established for varying isotropic media, particularly in the…Martine Pithioux, P. Lasaygues, P. Chabrand·Sep 14, 2005SaveLearn
Constitutive Laws and Failure Models for Compact Bones Subjected to Dynamic LoadingMany biological tissues, such as bones and ligaments, are fibrous. The geometrical structure of these tissues shows that they exhibit a similar hierarchy in their ultra-structure and macro-structure.…Martine Pithioux, P. Chabrand, M. Jean·Sep 13, 2005SaveLearn
An Analytical Solution of the Equations of a Rolling Disk of Finite Thickness on a Rough PlaneIn this article an analytical solution of equations of motion of a rigid disk of finite thickness rolling on its edge on a perfectly rough horizontal plane under the action of gravity is given. The…Milan Batista·Sep 5, 2005SaveLearn
Anomalous absorption of bulk shear sagittal acoustic waves in a layered structure with viscous fluidIt is demonstrated theoretically that the absorptivity of bulk shear sagittal waves by an ultra-thin layer of viscous fluid between two different elastic media has a strong maximum (in some cases as…Dmitri K. Gramotnev, Melissa L. Mather, Timo A. Nieminen·Sep 5, 2005SaveLearn
Steady Motion of a Rigid Disk of Finite Thickness on a Horizontal PlaneThe article discusses the steady motion of a rigid disk of finite thickness rolling on its edge on a horizontal plane under the influence of gravity. The governing equations are presented and two…Milan Batista·Sep 2, 2005SaveLearn
Lorentz, Edwards transformations and the principle of permutation invarianceThe Lorentz transformation is derived without the postulate of the universal limiting speed, and the general Edwards transformation is obtained by using the principle of permutation invariance…Jian Qi Shen·Sep 1, 2005SaveLearn
Plane electromagnetic wave in PEMCPlane electromagnetic wave propagating in perfect electromagnetic conductor (PEMC) is considered. Its wave number has no connection with the frequency. An interface is introduced between an ordinary…Bernard Jancewicz·Aug 31, 2005SaveLearn
Condition of Multibubble Sonofusion and Proposal of Experimental SetupWe consider that multibubble sonoluminescence (MBSL) sonofusion is necessary for the industrial use of sonofusion. In 2002, Taleyarkhan et al. [Science, 295, 1868, (2002)] reported neutron radiation…Masanori Sato, Hideo Sugai, Tatsuo Ishijima et al.·Aug 26, 2005SaveLearn