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Search Results: 1 - 10 of 520 matches for " Eyal Gruss "
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Black Holes in Ho?ava Gravity with Higher Derivative Magnetic Terms
Eyal Gruss
Physics , 2010, DOI: 10.1088/0264-9381/28/8/085007
Abstract: We consider Horava gravity coupled to Maxwell and higher derivative magnetic terms. We construct static spherically symmetric black hole solutions in the low-energy approximation. We calculate the horizon locations and temperatures in the near-extremal limit, for asymptotically flat and (anti-)de Sitter spaces. We also construct a detailed balanced version of the theory, for which we find projectable and non-projectable, non-perturbative solutions.
A Suggestion for a Teleological Interpretation of Quantum Mechanics
Eyal Gruss
Physics , 2000,
Abstract: We suggest solving the measurement problem by postulating the existence of a special future final boundary condition for the universe. Although this is an extension of the way boundary conditions are usually chosen (in terrestrial laboratories), it is our only deviation from standard quantum mechanics. Using two state vectors, or the "two-state", to describe completely the state of systems of interest, we analyze ideal and "weak" measurements, and show the consistency of our scheme. If the final state of a measuring device is assigned to be one of the possible outcomes of the measurement, an effective reduction is observed after an ideal measurement process. For final conditions chosen with an appropriate distribution, the predictions of standard quantum mechanics may be reconstructed, thus eliminating probability from the description of any single measurement. The interpretation attained, the Teleological Interpretation, is an ontological one; it is local and deterministic. Other special assumptions in the choice of the final boundary condition may explain certain unaccounted for phenomena, or even supply a mechanism for essential free will. In this context we believe that a new conception of time should be adopted.
Two-time interpretation of quantum mechanics
Yakir Aharonov,Eyal Y. Gruss
Physics , 2005,
Abstract: We suggest an interpretation of quantum mechanics, inspired by the ideas of Aharonov et al. of a time-symmetric description of quantum theory. We show that a special final boundary condition for the Universe, may be consistently defined as to determine single classical-like measurement outcomes, thus solving the "measurement problem". No other deviation is made from standard quantum mechanics, and the resulting theory is deterministic (in a two-time sense) and local. Quantum mechanical probabilities are recovered in general, but are eliminated from the description of any single measurement. We call this the Two-time interpretation of quantum mechanics. We analyze ideal measurements, showing how the quantum superposition is, in effect, dynamically reduced to a single classical state via a "two-time decoherence" process. We discuss some philosophical aspects of the suggested interpretation. We also discuss weak measurements using the two-time formalism, and remark that in these measurement situations, special final boundary conditions for the Universe, might explain some unaccounted for phenomena.
Measurement and Collapse within the Two-State-Vector Formalism
Yakir Aharonov,Eliahu Cohen,Eyal Gruss,Tomer Landsberger
Mathematics , 2014, DOI: 10.1007/s40509-014-0011-9
Abstract: The notion of collapse is discussed and refined within the Two-State-Vector Formalism (TSVF). We show how a definite result of a measurement can be fully determined when considering specific forward and backward-evolving quantum states. Moreover, we show how macroscopic time-reversibility is attained, at the level of a single branch of the wavefunction, when several conditions regarding the final state and dynamics are met, a property for which we coin the term "classical robustness under time-reversal". These entail a renewed perspective on the measurement problem, the Born rule and the many-worlds interpretation.
Konservative Therapie der Stuhlinkontinenz
Gruss HJ
Journal für Urologie und Urogyn?kologie , 2004,
Constructive Patriotism in Wartime  [PDF]
Eyal Lewin
Open Journal of Political Science (OJPS) , 2013, DOI: 10.4236/ojps.2013.34015

As opposed to blind patriotism, a moderate form of constructive patriotism has been depicted in previous research and empirically observed. The major distinction between blind patriotism and constructive patriotism lies in the latter’s capacity for criticism. Our research suggests, however, an additional distinction dividing constructive patriotism into two forms: one form is capable of practical judgment (hence, political constructive patriotism), and the other form is critical on grounds of ethical issues (hence moral constructive patriotism). This study then seeks to examine which sort of patriotism prevails within society during wartime; of special interest, for that matter, are the suggested variations of constructive patriotism. Two diverse cases have been chosen in order to examine the reactions within a democratic society: The American case of the 2003 invasion of Iraq and the Israeli case of the 2006 war in Lebanon. A substantive content analysis has been employed, surveying social processes through a variety of articles in an American and an Israeli daily newspaper. The findings reveal that in both cases among expressions of constructive patriotism, those of political constructive patriotism form a vast majority and only a few of them express moral constructive patriotism. It therefore seems that constructive patriots are not necessarily as moral as they might seem to be at first glance, even though they criticize state and society. The case of war in particular proves how on moral grounds criticism is important, but not enough.

The Hellenization of the Hasmoneans Revisited: The Archaeological Evidence  [PDF]
Eyal Regev
Advances in Anthropology (AA) , 2017, DOI: 10.4236/aa.2017.74012
Abstract: The archaeological excavations of the Hasmonean palaces in Jericho and the numismatic evidence on the Hasmoneans are examined in order to understand the Hasmonean rulers’ approach to Hellenistic culture. They enable us to see not only the extent of Hellenistic influence, but also how and why Hellenistic markers were used. Hellenistic art, swimming pools, bathhouses, and symbols on the coins that represent victory, success, government and power, shaped Hasmonean cultural and political identity. At the same time, however, their scope, meaning, and use were limited by the observance of ritual purity and the maintenance of local ethnic identity. Certain Greek symbols were altered to reflect Jewish religious messages. Thus, the Hasmoneans’ adoption of Hellenistic culture, while balanced, mainly served political ends.
Alterations of Amino Acids and Monoamine Metabolism in Male Fmr1 Knockout Mice: A Putative Animal Model of the Human Fragile X Mental Retardation Syndrome
Michael Gruss,Katharina Braun
Neural Plasticity , 2001, DOI: 10.1155/np.2001.285
Abstract: The Fragile X syndrome, a common form of mental retardation in humans, is caused by silencing the fragile X mental retardation (FMR1) geneleading to the absence of the encoded fragile X mental retardation protein 1 (FMRP). We describe morphological and behavioral abnormalities for both affected humans and Fmr1 knockout mice, a putative animal model for the human Fragile X syndrome. The aim of the present study was to identify possible neurochemical abnormalities in Fmr1 knockout mice, with particular focus on neurotransmission. Significant region-specific differences: of basal neurotransmitter and metabolite levels were found between wildtype and Fmr1 knockout animals, predominantly in juveniles (post-natal days 28 to 31). Adults (postnatal days 209 to 221) showed only few abnormalities as compared with the wildtype. In juvenile knockout mice, aspartate and taurine were especially increased in cortical regions, striatum, hippocampus, cerebellum, and brainstem. In addition, juveniles showed an altered balance between excitatory and inhibitory amino acids in the caudal cortex, hippocampus, and brainstem. We detected very few differences in monoamine turnover in both age stages. The results presented here provide the first evidence that lack of FMRP expression in FMRP knockout mice is accompanied by age-dependent, region-specific alterations in neurotransmission.
La pintura mural hispano-musulmana. Tradición o innovación?
Rallo Gruss, Carmen
Al-Qantara : Revista de Estudios Arabes , 2003,
Abstract: It is generally thought that in Western Europe and at the end of the medieval period, tempera paint with oil as a medium was applied to dry plaster walls because the Roman technique for painting on wet plaster (al fresco) had been forgotten. Texts such as the Libro dell'Arte by Cennino Cennini discuss the recovery of the fresco technique by some of the founding painters of the Italian Renaissance, such as Giotto. From Renaissance Italy, it is argued, the technique expanded to the rest of Europe. However, in medieval Hispanic monuments with Islamic iconography there is evidence of painted fresco decoration dated prior to the fifteenth century. This paper studies the sources of this technical tradition by analysing examples of Iberian, Roman, Islamic, Mudéjar and Morisco mural painting. El convencimiento de que a finales de la Edad Media las paredes eran decoradas con pintura al seco, realizada con temple, más o menos graso, olvidando la técnica de pintura al fresco utilizada habitualmente por los romanos, es algo admitido para toda la Europa Occidental. Textos como el Libro dell′Arte de Cennino Cennini nos hablan de su recuperación por los iniciadores del Renacimiento italiano como el Giotto; desde allí se expandirá la técnica a todos los países europeos. Sin embargo, en los monumentos hispanos con iconografía de tradición islámica se siguen realizando decoraciones al fresco hasta el siglo XV. En busca de explicaciones a esta excepción, en este artículo se buscan las fuentes de esa tradición técnica, analizando ejemplos de pintura mural ibera, romana, islámica y de lo morisco o mudéjar. El estudio se centra en los materiales utilizados, incluso con analítica de laboratorio, en paralelo con los motivos estilísticos que se encuentran en cada época.
Total Elbow Replacement as an Alternative to Severely Comminuted Fractures around the Elbow  [PDF]
Eyal Ginesin, Doron Norman
Open Journal of Orthopedics (OJO) , 2017, DOI: 10.4236/ojo.2017.711034
Abstract: Background: Intra articular elbow fractures are considered to be one of the most complex injuries in orthopedic trauma. Some are too comminuted for open reduction and internal fixation. Recently total elbow replacement (TER) had gained popularity for the treatment of comminuted elbow trauma when other treatment options are not possible. Methods: Since 2007-2013 we treated 18 patients with TER due to comminuted distal humeral fractures. We used the Disabilities of the Arm, Shoulder and Hand scoring system (DASH) to evaluate the patient’s satisfaction. In addition, we evaluated the elbow range of motion and collateral stability. Results and Conclusions: Functional range of motion was achieved with high patient’s satisfaction. Based on the results, we conclude that TER is a reasonable option for complex elbow fractures when open reduction and internal fixation is not suitable.
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