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Nishad, Shivnarayan
- Quantification of Regional and Global Sustainability Based on Combined Resource Criticality of Land and Water
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PDF Views:70
Authors
Affiliations
1 CSIR-National Institute for Science, Technology and Development Studies (NISTADS), Dr K.S. Krishnan Marg, New Delhi 110 012, IN
2 Department of Mathematics, M.S. Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru 560 058, IN
1 CSIR-National Institute for Science, Technology and Development Studies (NISTADS), Dr K.S. Krishnan Marg, New Delhi 110 012, IN
2 Department of Mathematics, M.S. Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru 560 058, IN
Source
Current Science, Vol 114, No 02 (2018), Pagination: 355-366Abstract
The overall global food sustainability is limited by the simultaneous availability of primary resources at regional scales, although the international trade network can redistribute available (surplus) food. Assessments based on isolated resource (like water) or demand (like food) cannot provide correct estimates of sustainability. We define a novel criticality index on the basis of simultaneous regional availability of arable land and water to quantify sustainability. Analyses at regional and global scale show that while a relatively small fraction of world population is subcritical in terms of food availability, much larger fractions are becoming subcritical in terms of food production. The combined resource criticality implies stronger constraints for sustainability.Keywords
Agricultural Sustainability, Carrying Capacity, Criticality Index, Food Sustainability, Water Sustainability.Full Text
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- A Dynamical Model of Growth of Membership to an Opinion
Abstract Views :241 |
PDF Views:76
Authors
Affiliations
1 Institute of Frontier Science and Applications, Bengaluru 560 037, IN
2 CSIR National Institute of Science, Technology and Development Studies, Dr K.S. Krishnan Marg, New Delhi 110 012, IN
1 Institute of Frontier Science and Applications, Bengaluru 560 037, IN
2 CSIR National Institute of Science, Technology and Development Studies, Dr K.S. Krishnan Marg, New Delhi 110 012, IN
Source
Current Science, Vol 116, No 4 (2019), Pagination: 577-591Abstract
Many social processes, from elections to terrorism, depend on growth of memberships to opinions. In a generic sense, an opinion is a proposition that for an individual has financial, cultural and emotional impli-cations. The individual responses in turn create a ‘social response’ which influences the individual response resulting in a dynamical system with two-way feed-backs. We consider a set of deterministic dynamical equations that describe individual response to a class of prescribed opinions. The time-dependent opinion dynamics model exhibits nearly complete acceptance to nearly complete rejection with complex evolution, providing the framework for a mechanistic descrip-tion of opinion formation.Keywords
Dynamic Model, Growth of Membership, Opinion Dynamics, Social Engineering.Full Text
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