Isolated neutron stars undergoing non-radial oscillations are expected to emit gravitational waves in the kilohertz frequency range. To date, radio astronomers have located about 1,300 pulsars, and can estimate that there are about 2×108 neutron stars in the galaxy. Many of these are surely old and cold enough that their interiors will contain matter in the superfluid or superconducting state. In fact, the so-called glitch phenomenon in pulsars (a sudden spin-up of the pulsar's crust) is best described by assuming the (...) presence of superfluid neutrons and superconducting protons in the inner crusts and cores of the pulsars. Recently there has been much progress on modelling the dynamics of superfluid neutron stars in both the Newtonian and general relativistic regimes. We will discuss some of the main results of this recent work, perhaps the most important being that superfluidity should affect the gravitational waves from neutron stars (emitted, for instance, during a glitch) by modifying both the rotational properties of the background star and the modes of oscillation of the perturbed configuration. Finally, we present an analysis of the so-called zero-frequency subspace (i.e., the space of time-independent perturbations) and determine that it is spanned by two sets of polar (or spheroidal) and two sets of axial (or toroidal) degenerate perturbations for the general relativistic system. As in the Newtonian case, the polar perturbations are the g-modes which are missing from the pulsation spectrum of a non-rotating configuration, and the axial perturbations should lead to two sets of r-modes when the degeneracy of the frequencies is broken by having the background rotate. (shrink)

Una importante causa filosófica e ideológica de la inhumanidad de la sociedad rusa durante las décadas del marxismo-leninismo fue la obsesiva orientación de los marxistas-leninistas hacia el futuro histórico (futuro comunismo) en aras de lo cual, comunidades, culturas y personas podían ser reducidas a medios para alcanzar ese fin histórico. El autor de los debates apoyándose en los propios pensadores rusos de la "tradición clásica", como por ejemplo Herzen, Dostoievsky, Tolstoy, Leontiev y Berdiaev. No se opone a cualquier tipo de (...) orientación de futuro, pero recalca la importancia de las personas actuales. (shrink)

Disclosure of financial interests in scientific research is the centerpiece of the new conflict of interest regulations issued by the U.S. Public Health Service and the National Science Foundation that became effective October 1, 1995. Several scientific journals have also established financial disclosure requirements for contributors. This paper measures the frequency of selected financial interests held among authors of certain types of scientific publications and assesses disclosure practices of authors. We examined 1105 university authors (first and last cited) from Massachusetts (...) institutions whose 789 articles, published in 1992, appeared in 14 scientific and medical journals. (shrink)

This paper emphasizes the crucial role of variation, at several different levels, for a detailed historical understanding of the development of the biomedical sciences. Going beyond valuable recent studies that focus on model organisms, experimental systems and instruments, we argue that all of these categories can be accommodated within our approach, which pays special attention to organismal and cultural variation. Our empirical examples are drawn in particular from recent historical studies of nineteenth- and early twentieth-century genetics and physiology. Based on (...) the quasi-paradoxical conclusion that biological and cultural variation both constrains and enables innovation in the biomedical sciences, we argue that more attention should be paid to variation as an analytical category in the historiography of the life sciences. (shrink)

In this article, the authors study the problem of balance of trust and mistrust associated with the turbulence of modern society, redundancy, and heterogeneity of information and communication flows creating a contradictory picture of the world. Social networks are considered as one of the basic modern information resources creating previously unavailable opportunities for communication, interaction, information sharing, and commonality construction. Social networks users broadcast the experience of constructing communications in real daily life in the Internet community forming circles of ‘friends‘, (...) building a chain of weak social ties; but the problem of trusting ‘friends‘ remains not solved in global space. A survey of users of social networks, conducted as part of this study, demonstrates conflicting findings. The opinions of ‘friends‘ does not always have an impact on the degree of trusting events, information, groups, likes, and dislikes to other users. Users often trust strangers and less familiar people. The social networks demonstrates the demand for uniting ‘brige-building‘ trust. However, the trust remains extremely narrow throughout, leading to fragmentation and alienation of individuals from each other in an attempt to find their safe niche. Distrust of narrow and wide radius leads to far-reaching consequences and greater uncertainty in society, not creating the preconditions for openness and the vision of the future. (shrink)

Russell Berman has written a fascinating book about space and alterity in colonial discourse. The book has a Eurocentric focus: the time and world Berman discusses were Eurocentric. So, too, was the Enlightenment, and Berman explicates the encounter between European voyagers and non-European peoples in terms of the “dialectic of enlightenment.” As a device, this works well. It allows a unity of focus in an otherwise varied assortment of topics. As he writes, his book is “neither a history of German (...) colonialism nor an intellectual history of images of non-Europeans in German literature,” but a look at “some specific cases…. (shrink)