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Bharati Sen 《International Information and Library Review》2013,45(2-4):359-365
Broad access to information plays a crucial role for empowerment, skill building, and more active participation of different groups of society, thus making an important contribution to social development. While information technology offers almost unlimited ways to enhance information access and management and to improve organizational structures, communication and workflows, it is the interaction between people, organization, and technology that makes economic and social development possible.In this paper the author describes some of the efforts with which she has been associated directly or vicariously. In these initiatives to enhance economic and social development, ITs enabling capacity has been harnessed imaginatively. 相似文献
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Ramesh Srinivasan 《The Information Society》2013,29(1):24-36
Research exploring the means by which new media technologies can shape development within marginalized communities worldwide has began to move away from discussion limited to technical and infrastructural, to consider the interactions, beliefs, and values of local communities. Yet most projects continue to focus on enabling communities to access external information, rather than on the possibility of using media to catalyze community reflection and thereby developmental activity from within. This article shows how this promise can be actualized by providing an overview of an experimental project that made available a set of video cameras to a carefully selected group of community members in a ritualized, largely nonliterate village in Andhra Pradesh, India. It concludes that policymakers, researchers, and practitioners would benefit from considering the possibilities that reflective media hold to generate collective action and consensus building, and that these possibilities can synergize with the need to develop scalable projects. 相似文献
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R. Srinivasan 《Resonance》1996,1(12):6-16
Absolute zero of temperature is unattainable. One may approach as close to absolute zero as technically possible. In this
four part series an attempt will be made to trace developments in the approach to absolute zero. In Part I, I will explain
the principles governing liquefaction of gases. 相似文献
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R. Srinivasan 《Resonance》1997,2(2):8-16
The liquefaction of gases was described in Part I of the series. The normal boiling point of4He is 4.22 K. By boiling a cryogenic liquid under low pressure one can attain a temperature lower than the normal boiling
point. Since the vapour pressure of a liquid cryogen decreases rapidly with decreasing temperature, a limit is set to the
lowest attainable temperature by pumping on a cryogenic bath. With a liquid4He bath this is 1.2 K. However using a bath of liquid3He one can attain a temperature as low as 0.3 K. 相似文献
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Stability and control of floating bodies is a major aspect of navigation from ancient to modern times. It is indeed remarkable
that Archimedean concepts continue to guide watercraft designers even after 2200 years! Extending Euclidean concept to solids,
Archimedes solved the problem of a paraboloid floating stably but with its base inclined to the water surface. Here, we revisit
Archimedes and present stability maps (A-maps) for paraboloid, solid cone and a prism. For a specific combination of geometry
and specific gravity, these A-maps predict whether a solid floats vertically or in a tilted fashion; or, whether it is partially
submerged. 相似文献
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R. Srinivasan 《Resonance》1997,2(6):6-14
In part 2 of this series we dealt with the3He cryostat. By pumping on liquid3He bath a temperature down to 0.3 K can be attained. To reach still lower temperatures in the milli-Kelvin region one uses
a dilution refrigerator. In this part the principles of operation of a dilution refrigerator will be described. 相似文献