Using covariant derivatives and the operator definitions of quantum mechanics, gauge invariant Proca and Lehnert equations are derived and the Lorenz condition is eliminated in U(1) invariant electrodynamics. It is shown that the structure of the gauge invariant Lehnert equation is the same in an O(3) invariant theory of electrodynamics.

Childhood obesity is a serious problem for increasing numbers of children around the world. According to the International Obesity Task Force, 1 of 10 schoolaged children worldwide is overweight or obese, a number totaling 155 million; of these, 2-3% are obese. Prevalence is highest in the Americas and Europe, followed by the Near/Middle East, with smaller but growing numbers in the Asia-Pacific and Sub-Saharan regions of the world.In the United States, which provides the data for much of this report, prevalence (...) continues to rise. The most recent nationally representative data indicate that 33.6% of individuals aged 2-19 years were overweight and 17.1% were at risk for overweight in 2003-2004, compared to 28.2% and 13.9% in 1999-2000, respectively. In this age group, the prevalence of overweight or at risk for overweight was highest among Mexican Americans, followed by Non-Hispanic blacks and Non-Hispanic whites, and a higher percentage of males were overweight compared to females. (shrink)

A Principle of fundamental importance, if it is valid, for the interpretation of the Pentekontaetia is laid down by the authors of A. T.L. iii in its most rigorous terms: it is that Thucydides has set events ‘in proper order … without any deviation whatever’. The conclusion appears to the present writer to be founded ultimately on a false assumption about Thucydides' purpose in these chapters, namely that he set out to write an outline history of the period of fifty (...) years to which he refers in 118.2 and, in effect, in 97. An examination of these passages reveals that it is not the outline of a period as a period that is offered, but rather the account of a particular theme or process falling within the period: his purpose in presenting the theme there defined is to be seen from the setting of the excursus as a unit in Bk. I rather than from the statement in 97.2: the due significance of this last, and of the demarcation of a period in 118. 2, is to be seen only in this wider context. (shrink)

Study of Śaṅkarācārya's critique of the various Indian philosophical schools, other than Vedanta, in his Śārīrakamīmāṃsābhāṣya.

Desmosomes are junctions involved in intercellular adhesion of epithelial cells and hemidesmosomes are junctions involved in adhesion of epithelia to basement membranes. Both are characterised at the ultrastructural level by dense cytoplasmic plaques which are linked to the intermediate filament cytoskeleton of the cells. The plaques strongly resemble each other suggesting a relationship between the two kinds of junctions, as implied by their names. Recent characterisation of the molecular components of the junctions shows they are, in fact, quite unrelated implying (...) that structural similarity is fortuitous. The molecular biology raises many fascinating problems relating to their structure and function. (shrink)

This paper considers a possible national cultural and scientific synthesis which failed to take place: namely the integration of the Central European theoretical physicist Erwin Schrödinger into the primarily experimental orientations of the Oxford physics of the 1930s. We also consider the effect of the Oxford social and intellectual atmosphere generally, incluing the persistence of previous traditions which undervalued Science relative to the Arts, and University research relative to tutorial provision in the Colleges. The Oxford situation is then briefly contrasted (...) to that which Schrödinger later found in Dublin between 1939 and 1956, and which was to have a significantly more productive outcome. (shrink)

Pluralism is on everyone's lips these days. Only lazy people do not refer to it. Politicians and authorities on political affairs are particularly eager to talk about it. Not to be left behind are scholars who broaden pluralism to a philosophical methodological position that fits best the spirit of the times and the present historical situation. Some writers view pluralism as the most important discovery of the twentieth century, a further development of the Copernican revolution in philosophy.

It would be difficult to name a more interesting scientific problem than that of knowledge of the brain, its overall mechanisms and its molecular nature. Rational management of the brain in the future and utilization of the principles of its functioning to construct various mechanisms to undergird present-day technological progress should follow as direct consequences of development of that sphere of knowledge.

Scientists in many fields are presently giving the closest attention to study of the potentials of the systems approach for understanding what cannot be comprehended with the analytical approach or, as V. A. Engel'gardt has put it, "an accumulation of material in reduced form." This approach is in some degree a gesture of despair. It is quite obvious that we now face the danger of drowning in the abundance of data accumulated in terms of "special" problems not tied into a (...) system, and that this threatens loss of general direction. (shrink)

Many avenues lead to human consciousness: introspection, phenomenology, cognitive science, philosophy, neurobiology. To these can be added aesthetics; both the production of artful objects and the appreciation of artful objects are characteristic of human minds. By looking at artful objects we can hypothesize why the human mind both produces them and responds to them, and derive from such hypotheses ideas about the nature of human consciousness, including its power to make present in the mind that which is absent from view. (...) In particular, the art of Shakespeare, being both verbal and formal, both articulates the peculiar burdens of human consciousness and demonstrates art's response to these burdens. His play Troilus and Cressida serves as an example, exhibiting and exploring the discordancies human consciousness is liable to, and at the same time incorporating those discordancies into a greater harmony through the formal structures of art. (shrink)

This paper attempts to argue for the theory-ladenness of evidence. It does so by employing and analysing an episode from the history of eighteenth century chemistry. It delineates attempts by Joseph Priestley and Antoine Lavoisier to construct entirely different kinds of evidence for and against a particular hypothesis from a set of agreed upon observations or (raw) data. Based on an augmented version of a distinction, drawn by J. Bogen and J. Woodward, between data and phenomena it is shown that (...) the role of theoretical auxiliary assumptions is very important in constructing evidence for (or against) a theory from observation or (raw) data. In revolutionary situations, rival groups hold radically different theories and theoretical auxiliary assumptions. These are employed to construct very different evidence from the agreed upon set of observations or (raw) data. Hence, theory resolution becomes difficult. It is argued that evidence construction is a multi-layered exercise and can be disputed at any level. What counts as unproblematic observation or (raw) data at one level may become problematic at another level. The contingency of these constructions and the (un)problematic nature of evidence are shown to be partially dependent upon the scientific knowledge that the scientific community possesses. (shrink)

Study on Īśvarakr̥ṣṇa's Sāṅkhyakārikā, basic work of the Sankhya school in Hindu philosophy, and its commentary Sāṅkhyataruvasanta by Mudumba Narasimhacarya, 1842-1928.

THE HOLY GAL - and European, medieval legends - a mysterious vessel, for the sake of approaching and engaging in its good deeds, the knights performed their exploits. It was commonly believed that this is the Cup with the blood of Jesus Christ, which Joseph of Arimathea gathered, who removed from the cross the body of the crucified Christ. It was often assumed that this cup originally served Christ and the Apostles at the time of the Last Supper; was the (...) Cup for the communion of the first Liturgy. Gral is a mystery, invisible to the unworthy, but also worthy of being different. Gral has the ability to miraculously fill his elect with unearthly things, which was first discovered during the imprisonment of Joseph Artmofeysky. (shrink)