Water Development and Environment

It is evident that water development is essential for economic development of developing countries. Hence, the fundamental question that should be asked is not whether there should be water developments, but rather how to meet the basic human needs and aspirations of all the world's people, without simultaneously destroying the resource base, that is, the environment, from which these needs must be met. This means that "environment" must be looked at in a broader context: it can no longer be viewed only in terms of environmental pollution -- such as water, air and soil pollution -- just as economic and social developments can no longer be adequately measured solely in terms of growth in gross national products

Climatic Constraints and Human Activities; Proceedings of a Task Force on the Nature of Climate and Society Research, February 4-6, 1980

This book contains a summary essay and seven invited papers from the Task Force meeting on the Nature of Climate Society Research. The introductory essay examines the differences in research methods on questions of short-time climatic change, and identifies some important avenues for research. The first two papers, by Ausubel and Meyer-Abich, take broad looks at climate and public policy. Ausubel offers arguments from an economic point of view as to why the atmosphere is increasingly associated with developments, like climatic change, that are threatening to human activity. The paper by Meyer-Abich surveys from a political point of view the reasons that regulation of activities which could control or prevent climatic change are unlikely to take place, and why adaptation is the most likely path to be followed, especially given the current weakness of the interdisciplinary analysis of the problem of climatic change. The paper by Biswas narrows the focus and illuminates the uncertainty associated with one specific but very prominent area, the relationships between climate and crops, which one might easily assume otherwise to be a more secure area of knowledge. Three case study approaches follow, two emphasizing a geographical perspective and one a social group. Warrick's historical study of the possible "lessening" of drought impacts in the Great Plains of the USA emphasizes the need for a clear setting out of hypotheses to be tested in research on the relationship of climate and society and the need for improvements of the modelling of the overall system. Spitz develops a model of a food-producing class which is also self-provisioning, i.e., where food has a dual nature as both a basic need and as merchandise to be traded, and explores the significance of drought to such a group, with particular reference to Eastern India. Czelnai's paper on the Great Plain of the Danube Basin offers interesting insights into the extent to which natural systems have already been transformed by man and proposes ways in which sensitivity and vulnerability to climatic factors may be defined and explored. Finally, Sergin proposes a method of estimating plausible patterns of climatic change based on the similarity between seasonal changes and climatic changes of physical fields on longer time scales

The Holography Hypothesis and Pre-Big Bang Cosmology

The consequences of holography hypothesis are investigated for the Pre-big-bang string cosmological models. The evolution equations are obtained from the tree level string effective action. It is shown that $S/A$ is bounded by a constant in each case, $S$ being the entropy within the volume bounded by the horizon of area $A$.Comment: 11 pages, revtex, 1 eps fil

Climatic Constraints and Human Activities: Introduction and Overview

The volume of proceedings entitled "Climatic Constraints and Human Activities" contains a summary essay and seven invited papers from the Task Force meeting on the Nature of Climate Society Research convened in February 1980 at the International Institute for Applied Systems Analysis in Laxenburg, Austria. This, the introductory essay, examines the differences in research methods on questions of short-term climate variability and longer-term climatic change, identifies some important avenues for research, and briefly surveys the papers. Ausubel and Meyer-Abich take broad looks at climate and public policy. Ausubel offers arguments from an economic point of view as to why the atmosphere is increasingly associated with developments, like climatic change, which are threatening to human activity. The paper by Meyer-Abich surveys from a political point of view the reasons that regulation of activities which could control or prevent climatic change is unlikely to take place, and why adaptation is the most likely path to be followed, especially given the current weakness of the interdisciplinary analysis of the problem of climatic change. The paper by Biswas narrows the focus and illuminates the uncertainty associated with one specific but very prominent area, the relationship between climate and crops, which one might easily assume otherwise to be a more secure area of knowledge. Three case study approaches follow, two emphasizing a geographical perspective and one a social group. Warrick's historical study of the possible "lessening" of drought impacts in the Great Plains of the United States emphasizes the need for a clear setting out of the hypotheses to be tested in research on the relationship of climate and society and the need for improvements of the modeling of the overall system. Spitz develops a model of a food producing class which is also self-provisioning, that is, where food has a dual nature as both a basic need and as merchandise to be traded, and explores the significance of drought to such a group, with particular reference to Eastern India. Czelnai's paper on the Great Plain of the Danube Basin offers interesting insights into the extent into which natural systems have already been transformed by man and proposes ways in which sensitivity and vulnerability to climatic factors may be defined and explored. Finally, Sergin proposes a method of estimating plausible patterns of climatic change based on the similarity between seasonal changes and climatic changes of physical fields on longer time scales

de Sitter thermodynamics and the braneworld

The de Sitter thermodynamics of cosmological models with a modified Friedmann equation is considered, with particular reference to high-energy Randall-Sundrum and Gauss-Bonnet braneworlds. The Friedmann equation can be regarded as the first law of thermodynamics of an effective gravitational theory in quasi de Sitter spacetime. The associated entropy provides some selection rules for the range of the parameters of the models, and is proposed for describing tunneling processes in the class of high-energy gravities under consideration.Comment: 16 pages JHEP style, no figures. v2: references added; v3: typo corrected in Eq.(3.1), supersedes published versio

Spin-Polarized Transport Across an La0.7_{0.7}Sr0.3_{0.3}MnO3_{3}/YBa2_{2}Cu3_{3}O7_{7} Interface: Role of Andreev Bound States

Transport across an La$_{0.7}$Sr$_{0.3}MnO$_{3}/YBa$_{2}Cu$_{3}$O$_{7}$(LSMO/YBCO), interface is studied as a function of temperature and surface morphology. For comparison, control measurements are performed in non-magnetic heterostructures of LaNiO$_{3}$/YBCO and Ag/YBCO. In all cases, YBCO is used as bottom layer to eliminate the channel resistance and to minimize thermal effects. The observed differential conductance re ects the role of Andreev bound states in a-b planes, and brings out for the first time the suppression of such states by the spin-polarized transport across the interface. The theoretical analysis of the measured data reveals decay of the spin polarization near the LSMO surface with temperature, consistent with the reported photoemission data.Comment: 5 pages LaTeX, 3 eps figures included, accepted by Physical Review

Holographic principle in the BDL brane cosmology

We study the holographic principle in the brane cosmology. Especially we describe how to accommodate the 5D anti de Sitter Schwarzschild (AdSS$_5$) black hole in the Binetruy-Deffayet-Langlois (BDL) approach of brane cosmology. It is easy to make a connection between a mass $M$ of the AdSS$_5$ black hole and a conformal field theory (CFT)-radiation dominated universe on the brane in the moving domain wall approach. But this is not established in the BDL approach. In this case we use two parameters $C_1, C_2$ in the Friedmann equation. These arise from integration and are really related to the choice of initial bulk matter. If one chooses a bulk energy density $\rho_B$ to account for a mass $M$ of the AdSS$_5$ black hole and the static fifth dimension, a CFT-radiation term with $\rho_{CFT} \sim M/a^{4}$ comes out from the bulk matter without introducing a localized matter distribution on the brane. This means that the holographic principle can be established in the BDL brane cosmology.Comment: 9 pages, a version to appear in PR

Prospect of common effluent treatment plant (CETP) in industrial sector

Prospect of common effluent treatment plant (CETP) in industrial secto

Alternative Patterns of Development for the Agricultural Sector

The benefits of the modern technological and industrial developments and the unprecedented postwar expansion in world economic activities benefited all nations, but the benefits, unfortunately, were very unevenly distributed among various countries, depending on many different factors, including the then stages of development of individual countries. This, plus the fact that the developing countries had a far larger population growth than the developed countries, both in absolute and percentage terms, have made the gap between the rich and the poor nations progressively wider. The latest demographic data, however, is cautiously encouraging