Context. The identification of the sources that reionized the Universe and their specific contribution to this process are key missing pieces of our knowledge of the early Universe. Faint star-forming galaxies may be the main contributors to the ionizing photon budget during the epoch of reionization, but their escaping photons cannot be detected directly due to inter-galactic medium opacity. Hence, it is essential to characterize the properties of faint galaxies with significant Lyman continuum photon leakage up to z 4 to (...) define indirect indicators allowing analogues to be found at the highest redshift. Aims. Long gamma-ray bursts explode typically in star-forming regions of faint, star-forming galaxies. Through LGRB afterglow spectroscopy it is possible to detect directly LyC photons. Our aim is to use LGRBs as tools to study LyC leakage from faint, star-forming galaxies at high redshift. Methods. Here we present the observations of LyC emission in the afterglow spectra of GRB 191004B at z = 3:5055, together with those of the other two previously known LyC-emitting LGRB, to determine their LyC escape fraction and compare their properties. Results. From the afterglow spectrum of GRB 191004B we determine a neutral hydrogen column density at the LGRB redshift of og =17:2 0:15, and negligible extinction. The only metal absorption lines detected are C iv and Si iv. In contrast to GRB 050908 and GRB 060607A, the host galaxy of GRB 191004B displays significant Ly emission. From its Ly emission and the non-detection of Balmer emission lines we constrain its star-formation rate to 1 SFR 4:7 M yr. 1. We fit the Ly emission with a shell model and find parameters values consistent with the observed ones. The absolute LyC escape fractions we find for GRB 191004B, GRB 050908 and GRB 060607A are of 0:35+0:10.0:11, 0:08+0:05.0:04 and :20+0:05.0:05, respectively. We compare the LyC escape fraction of LGRBs to the values of other LyC emitters found from the literature, showing that LGRB afterglows can be powerful tools to study LyC escape for faint high-redshift star-forming galaxies. Indeed we could push LyC leakage studies to much higher absolute magnitudes. The host galaxies of the three LGRB presented here have all M1600 >.19:5 mag, with the GRB 060607A host at M1600 >.16 mag. LGRB hosts may therefore be particularly suitable for exploring the ionizing escape fraction in galaxies that are too faint or distant for conventional techniques. Furthermore the time investment is very small compared to galaxy studies. (shrink)

This paper makes an attempt to examine the various facets of human values in the background of the widely shared popular beliefs about erosion of values. A random sample of elite opinions on the nature of decline of values brings out the difficulties involved in identifying values for social analysis. Values are an integral part of the religious, spiritual and governmental spheres of social behaviour within a culture. It is argued that the problem of erosion of values is shared across (...) cultures and has existed throughout the history of human society. It is suggested that material and spiritual values follow a dialectical process of coexistence and conflict. The current wave of concern over degeneration of values is explained in relation to the unprecedented complexity of today's global society and the socio-economic challenges posed by this complexity for the individual and the society at various levels. This discussion is followed by a brief review of the recent contributions of social sciences to the concept of values and their decline in modern society. Finally, some thoughts are expressed, from a sociologist's vantage point, regarding the multi-dimensional problem of values in the emerging global culture. (shrink)

The present volume completes the cataloguing of manuscripts. This impressive undertaking will be concluded with one further volume, which will contain addenda and extensive indexes to all the volumes. `a remarkable achievement of scholarship...The descriptions of the manuscripts are full and at the same time admirably concise...Any user of the work, whether his interests are palaeographical, iconographical, or textual, will be deeply grateful for the wealth of information contained in this volume'. Review of English Studies`will be invaluable not only for (...) reference but for the comprehensive and immensely precise assurance that it will give to scholars in every field of medieval studies that nothing relevant to their purposes now lurks in unrecorded concealment'. English Historical Review. (shrink)

The paper is devoted to the research by H. Petrovsky “Desturbance of the Sign. Culture against Transcendence.” The article attempts a reconstruction of some important conceptual topoi of the book. The ideas of the book are presented through the material of one of the chapters — the photo archive of Zofia Rydet. The second part offers a conceptual variation of a different type, due to J.-M. Vappereau, which is related to the range of issues raised in the book.